修改painitng.comp以适应编码修改

ArchitectureColoredPainting/ArchitectureColoredPainting.vcxproj

@@ -70,6 +70,8 @@
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalIncludeDirectories>$(ProjectDir)include;$(SolutionDir)ArchitectureColoredPainting\src\Editor\RightBar;$(SolutionDir)ArchitectureColoredPainting\src\Editor\;$(SolutionDir)FramelessHelper\include;$(SolutionDir)FramelessHelper\qmake\inc\core;$(SolutionDir)FramelessHelper\include\FramelessHelper\Core;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>FRAMELESSHELPER_WIDGETS_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <WarningLevel>Level1</WarningLevel>
+      <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
     </ClCompile>
     <Link>
       <AdditionalDependencies>opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -80,7 +82,7 @@
       <TreatWChar_tAsBuiltInType>true</TreatWChar_tAsBuiltInType>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Disabled</Optimization>
+      <Optimization>MaxSpeed</Optimization>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
     </ClCompile>
     <Link>
@@ -171,6 +173,7 @@
     <None Include="res\Shaders\model_shadow.frag" />
     <None Include="res\Shaders\model_shadow.geom" />
     <None Include="res\Shaders\model_shadow.vert" />
+    <None Include="res\Shaders\pageId_downsample.comp" />
     <None Include="res\Shaders\painting.comp" />
     <None Include="res\Shaders\painting.frag" />
     <None Include="res\Shaders\painting.vert" />

ArchitectureColoredPainting/ArchitectureColoredPainting.vcxproj.filters

@@ -326,6 +326,9 @@
     <None Include="res\Shaders\brdf_lut.comp">
       <Filter>Resource Files\Shaders</Filter>
     </None>
+    <None Include="res\Shaders\pageId_downsample.comp">
+      <Filter>Resource Files\Shaders</Filter>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <QtUic Include="EditorWidget.ui">

ArchitectureColoredPainting/res/MainWindow.qrc

@@ -31,6 +31,7 @@
         <file>Shaders/irradiance_convolution.frag</file>
         <file>Shaders/cubemap_prefilter.frag</file>
         <file>Shaders/brdf_lut.comp</file>
+        <file>Shaders/pageId_downsample.comp</file>
     </qresource>
     <qresource prefix="/qt/etc">
         <file>qt.conf</file>

ArchitectureColoredPainting/res/Shaders/model.frag

@@ -9,7 +9,7 @@ layout (location = 0) out vec4 gBaseColor;
 layout (location = 1) out vec3 gNormal;
 layout (location = 2) out vec3 gPosition;
 layout (location = 3) out vec2 gMetallicRoughness;
-layout (location = 4) out uint gPaintingIndex;
+layout (location = 4) out uvec2 gPaintingIndex;
 
 in vec2 TexCoords;
 in vec3 WorldPos;
@@ -36,12 +36,22 @@ vec3 getNormalFromMap()
 
 void main()
 {      
-    gBaseColor = texture(texture_basecolor, TexCoords);
+    if(textureSize(texture_basecolor,0)!=vec2(0))
+        gBaseColor = texture(texture_basecolor, TexCoords);
+    else
+        gBaseColor = vec4(1);
     if(gBaseColor.a<0.4)
         discard;
     gPosition = WorldPos;
-    gNormal = getNormalFromMap();
-    gMetallicRoughness = texture(texture_metallic_roughness, TexCoords).bg;
-    gPaintingIndex = 0;
+    if(textureSize(texture_normal,0)!=vec2(0))
+        gNormal = getNormalFromMap();
+    else
+        gNormal = Normal;
+    if(textureSize(texture_metallic_roughness,0)!=vec2(0))
+        gMetallicRoughness = texture(texture_metallic_roughness, TexCoords).bg;
+    else
+        gMetallicRoughness = vec2(0,1);
+   
+    gPaintingIndex = uvec2(0);
 
 }

ArchitectureColoredPainting/res/Shaders/model_shadow.frag

@@ -1,4 +1,5 @@
 #version 450 core
+#extension GL_ARB_sparse_texture2 : enable
 
 uniform sampler2D texture_basecolor;
 
@@ -6,8 +7,11 @@ in vec2 TexCoords;
 
 void main()
 {      
-    //gBaseColor = vec4(1,0,0,1);
-	vec4 baseColor = texture(texture_basecolor, TexCoords);
+    vec4 baseColor;// = texture(texture_basecolor, TexCoords);
+    float lod = textureQueryLod(texture_basecolor, TexCoords).x;
+    while(!sparseTexelsResidentARB(sparseTextureLodARB(texture_basecolor, TexCoords, lod, baseColor))&&lod<textureQueryLevels(texture_basecolor))
+        lod++;
+	
     if(baseColor.a<0.4)
         discard;
 }

ArchitectureColoredPainting/res/Shaders/pageId_downsample.comp

@@ -0,0 +1,14 @@
+#version 450 core
+
+layout (local_size_x = 8, local_size_y = 8) in;
+
+layout(rg16ui, binding = 3) uniform uimage2D gPageId;
+
+uniform uvec2 dither = uvec2(0);
+
+void main()
+{
+	uvec2 targetLocation = gl_GlobalInvocationID.xy;
+	uvec2 sourceLocation = targetLocation * 8 + dither;
+	imageStore(gPageId, ivec2(targetLocation), uvec4(imageLoad(gPageId, ivec2(sourceLocation))));
+}

ArchitectureColoredPainting/res/Shaders/painting.comp

@@ -2,29 +2,20 @@
 
 layout (local_size_x = 8, local_size_y = 8) in;
 
+uniform ivec2 pixelOffset;
+
 layout(rgba8, binding = 0) uniform image2D gBaseColor;
 layout(rg8, binding = 1) uniform image2D gMetallicRoughness;
-layout(r16ui, binding = 2) uniform uimage2D gPaintingIndex;
-layout(rg32f, binding = 3) uniform image2D gPaintingTexCoord;
 
-layout(std430, binding = 1) buffer paintingOffsetBuffer
-{
-	/**********************
-	** @x paintingBvhRoot
-	** @y paintingBvhLength
-	**********************/
-	uvec2 paintingOffsets[];
-};
-
-layout(std430, binding = 2) buffer bvhBuffer
+layout(std430, binding = 0) buffer bvhBuffer
 {
 	uvec2 bvhChildren[];
 };
-layout(std430, binding = 3) buffer bvhBoundBuffer
+layout(std430, binding = 1) buffer bvhBoundBuffer
 {
 	vec4 bvhBound[];
 };
-layout(std430, binding = 4) buffer elementOffsetBuffer
+layout(std430, binding = 2) buffer elementOffsetBuffer
 {
 	/**********************
 	** @[0] elementBvhRoot
@@ -34,11 +25,11 @@ layout(std430, binding = 4) buffer elementOffsetBuffer
 	**********************/
 	uvec4 elementOffset[];
 };
-layout(std430, binding = 5) buffer elementIndexBuffer
+layout(std430, binding = 3) buffer elementIndexBuffer
 {
 	uint elementIndexs[]; //ÏߺÍÃæ
 };
-layout(std430, binding = 6) buffer elementDataBuffer
+layout(std430, binding = 4) buffer elementDataBuffer
 {
 	float elementData[]; //µãºÍStyle
 };
@@ -1019,8 +1010,8 @@ bool drawElement(uint elementIndex, vec2 localUV, out vec3 color, out vec2 metal
 						for ( uint contourIterator = contourIndex + 1;contourIterator < contourIndex + 1 + lineCount; contourIterator++)
 						{
 							uint lineIndex = elementIndexs[contourIterator];
-							uint pLocation = linesOffset + 4 * lineIndex;
-							uvec4 pxIndex = uvec4(pointsOffset)+2*uvec4(elementIndexs[pLocation], elementIndexs[pLocation+1], elementIndexs[pLocation+2], elementIndexs[pLocation+3]);
+							uint pLocation = linesOffset + 2 * lineIndex;
+							uvec4 pxIndex = uvec4(pointsOffset)+2*uvec4(elementIndexs[pLocation]>>16, elementIndexs[pLocation]&0xFFFF, elementIndexs[pLocation+1]>>16, elementIndexs[pLocation+1]&0xFFFF);
 							uvec4 pyIndex = uvec4(1)+pxIndex;
 							mat4x2 p = mat4x2(elementData[pxIndex[0]], elementData[pyIndex[0]],
 										elementData[pxIndex[1]], elementData[pyIndex[1]],
@@ -1078,8 +1069,8 @@ bool drawElement(uint elementIndex, vec2 localUV, out vec3 color, out vec2 metal
 							if(contourIterator_==contourIndex + 1 + lineCount)
 								contourIterator = contourIndex + 1;
 							uint lineIndex = elementIndexs[contourIterator];							
-							uint pLocation = linesOffset + 4 * lineIndex;
-							uvec4 pxIndex = uvec4(pointsOffset)+2*uvec4(elementIndexs[pLocation], elementIndexs[pLocation+1], elementIndexs[pLocation+2], elementIndexs[pLocation+3]);
+							uint pLocation = linesOffset + 3 * lineIndex;
+							uvec4 pxIndex = uvec4(pointsOffset)+2*uvec4(elementIndexs[pLocation]>>16, elementIndexs[pLocation]&0xFFFF, elementIndexs[pLocation+1]>>16, elementIndexs[pLocation+1]&0xFFFF);
 							uvec4 pyIndex = uvec4(1)+pxIndex;
 
 							mat4x2 p = mat4x2(elementData[pxIndex[0]], elementData[pyIndex[0]],
@@ -1182,13 +1173,13 @@ bool drawElement(uint elementIndex, vec2 localUV, out vec3 color, out vec2 metal
 
 void main()
 {
-	//ivec2 pixelLocation = ivec2(((gl_LocalInvocationID.xy)*imageSize(gPaintingIndex)/gl_WorkGroupSize.xy + gl_WorkGroupID.xy).xy);
-	ivec2 pixelLocation = ivec2(gl_GlobalInvocationID.xy);
-	uint paintingIndex = imageLoad(gPaintingIndex, pixelLocation).r;
-	if(paintingIndex==0)
-		return;
-
-	vec2 uv = imageLoad(gPaintingTexCoord, pixelLocation).rg;
+	ivec2 pixelLocation = ivec2(pixelOffset + gl_GlobalInvocationID.xy);
+	vec2 uv = (pixelLocation + vec2(0.5)) / imageSize(gBaseColor);
+	//imageStore(gBaseColor, pixelLocation, vec4(uv,1,1));
+	//imageStore(gMetallicRoughness, pixelLocation, vec4(uv,1,1));
+	//return;
+	uv = vec2(1)-uv*2;
+	//vec2 uv = imageLoad(gPaintingTexCoord, pixelLocation).rg;
 
 	vec3 debugBVH = vec3(0);
 	//bool debugHit = false;

ArchitectureColoredPainting/res/Shaders/painting.frag

@@ -1,10 +1,16 @@
 #version 450 core
+#extension GL_ARB_sparse_texture2 : enable
+
+uniform sampler2D texture_basecolor;
+uniform sampler2D texture_metallic_roughness;
+
+uniform uint paintingId;
 
 layout(location = 0) out vec4 gBaseColor;
 layout(location = 1) out vec3 gNormal;
 layout(location = 2) out vec3 gPosition;
 layout(location = 3) out vec2 gMetallicRoughness;
-layout(location = 4) out uint gPaintingIndex;
+layout(location = 4) out uvec2 gPaintingIndex;
 layout(location = 5) out vec2 gPaintingTexCoord;
 
 in vec2 TexCoords;
@@ -13,635 +19,37 @@ in vec3 Normal;
 
 void main()
 {
-
-    gBaseColor = vec4( vec3(1),1 );
-    // mainImage(gBaseColor, vec2(1.,1.)-TexCoords);
+    int lodExpect = int(textureQueryLod(texture_basecolor, TexCoords).x);
+    int levels = textureQueryLevels(texture_basecolor);
+    float lod = lodExpect;
+    while(!sparseTexelsResidentARB(sparseTextureLodARB(texture_basecolor, TexCoords, lod, gBaseColor))&&lod<levels)
+        lod++;
+    if(gBaseColor.a<0.4)
+        discard;
+    //gBaseColor = vec4( vec3(1),1 );
     gPosition = WorldPos;
     gNormal = normalize(Normal);
-    // gMetallicRoughness = vec2(1, 46./255);
-    gMetallicRoughness = vec2(0);
-    gPaintingIndex = 1;
+    //gMetallicRoughness = vec2(0,1);
+    lod = lodExpect;
+    vec4 mt;
+    while(!sparseTexelsResidentARB(sparseTextureLodARB(texture_metallic_roughness, TexCoords, lod, mt))&&lod<levels)
+        lod++;
+    gMetallicRoughness = mt.rg;
+    
+//    int pageSize = textureSize(texture_basecolor, levels-1).x;
+
+//    uint pageId = 0;
+//    for(uint i = 0; i < lodExpect; i++)
+//        pageId += 1<<(2*(levels-1-i));
+    uint w = 1<<(levels-1-lodExpect);
+    ivec2 page = ivec2(TexCoords * vec2(w));
+    page = clamp(page, ivec2(0), ivec2(w-1));
+//    pageId += page.y*w+page.x;
+    if(lodExpect==levels-1)
+        gPaintingIndex = uvec2(0);
+    else
+        gPaintingIndex = uvec2((paintingId<<4)+lodExpect, (page.y<<8)+page.x);
     gPaintingTexCoord = vec2(1., 1.) - TexCoords * 2;
     return;
 
-}
-
-
-layout(std430, binding = 1) buffer bvhBuffer
-{
-    uint bvhLength;
-    uvec2 bvhChildren[];
-};
-layout(std430, binding = 2) buffer bvhBoundBuffer
-{
-    vec4 bvhBound[];
-};
-layout(std430, binding = 3) buffer elementOffsetBuffer
-{
-    /**********************
-    ** @x elementBvhRoot
-    ** @y elementBvhLength
-    ** @z pointsOffset
-    ** @w linesOffset
-    **********************/
-    uvec4 elementOffset[];
-};
-layout(std430, binding = 4) buffer elementIndexBuffer
-{
-    uint elementIndexs[]; //ÏߺÍÃæ
-};
-layout(std430, binding = 5) buffer elementDataBuffer
-{
-    float elementData[]; //µãºÍStyle
-};
-
-const float PI = 3.14159265358979;
-
-////////////////////////////////////////////////////////////////////////////
-
-float border = 0;
-
-mat2 inv(mat2 m)
-{
-    return mat2(m[1][1], -m[0][1], -m[1][0], m[0][0]) / (m[0][0] * m[1][1] - m[1][0] * m[0][1]);
-}
-
-float abs_min(float a, float b)
-{
-    if (abs(a) < abs(b))
-    {
-        return a;
-    }
-    else
-    {
-        return b;
-    }
-}
-
-int i_mod(int a, int m)
-{
-    return int(mod(float(a), float(m)));
-}
-
-float line_dist(vec2 uv, const vec2 p0, vec2 p1)
-{
-    vec2 tang = p1 - p0;
-    vec2 nor = normalize(vec2(tang.y, -tang.x));
-
-    if (dot(tang, uv) < dot(tang, p0))
-    {
-        return distance(p0, uv);
-    }
-    else if (dot(tang, uv) > dot(tang, p1))
-    {
-        return distance(p1, uv);
-    }
-    else
-    {
-        return dot(nor, uv) - dot(nor, p0);
-    }
-}
-
-bool int_test(vec2 uv, vec2 last_point, vec2 p0, vec2 p1)
-{
-    last_point -= uv;
-    p0 -= uv;
-    p1 -= uv;
-
-    bool ret;
-    if (p0.y == 0.)
-    {
-        ret = (p0.x >= 0. && p1.y * last_point.y < 0.);
-    }
-    else if (p1.y == 0.)
-    {
-        ret = false;
-    }
-    else if (p0.y * p1.y < 0.)
-    {
-        if (p0.x >= 0. && p1.x >= 0.)
-        {
-            ret = true;
-        }
-        else if (p0.x < 0. && p1.x < 0.)
-        {
-            ret = false;
-        }
-        else
-        {
-            vec2 nor;
-            if (p0.y > p1.y)
-            {
-                nor = p0 - p1;
-            }
-            else
-            {
-                nor = p1 - p0;
-            }
-
-            nor = vec2(nor.y, -nor.x);
-            if (dot(nor, p0) < 0.)
-            {
-                ret = false;
-            }
-            else
-            {
-                ret = true;
-            }
-        }
-    }
-    else
-    {
-        ret = false;
-    }
-
-    return ret;
-}
-
-bool tri_test(vec2 uv, vec2 p0, vec2 p1, vec2 p2, bool inside)
-{
-    vec2 nor1 = normalize(p0 - p1);
-    nor1 = vec2(nor1.y, -nor1.x);
-    vec2 nor2 = normalize(p1 - p2);
-    nor2 = vec2(nor2.y, -nor2.x);
-    vec2 tan3 = normalize(p2 - p0);
-    vec2 nor3 = vec2(tan3.y, -tan3.x);
-
-    if (inside)
-    {
-        if (dot(tan3, p0) >= dot(tan3, uv) || dot(tan3, p2) <= dot(tan3, uv))
-        {
-            return false;
-        }
-
-        float brd = max(dot(nor3, nor1), dot(nor3, nor2)) * border;
-        return (dot(uv, nor1) >= dot(p0, nor1) && dot(uv, nor2) >= dot(p1, nor2) &&
-                dot(uv, nor3) >= dot(p2, nor3) + brd) ||
-               (dot(uv, nor1) <= dot(p0, nor1) && dot(uv, nor2) <= dot(p1, nor2) &&
-                dot(uv, nor3) <= dot(p2, nor3) - brd);
-    }
-    else
-    {
-        float brd1 = dot(nor1, tan3) * border;
-        float brd2 = dot(nor2, tan3) * border;
-
-        if (dot(tan3, p0) >= dot(tan3, uv) - brd1 || dot(tan3, p2) <= dot(tan3, uv) - brd2)
-        {
-            return false;
-        }
-        return (dot(uv, nor1) >= dot(p0, nor1) - border && dot(uv, nor2) >= dot(p1, nor2) - border &&
-                dot(uv, nor3) >= dot(p2, nor3)) ||
-               (dot(uv, nor1) <= dot(p0, nor1) + border && dot(uv, nor2) <= dot(p1, nor2) + border &&
-                dot(uv, nor3) <= dot(p2, nor3));
-    }
-}
-
-float bezier_sd(vec2 uv, vec2 p0, vec2 p1, vec2 p2)
-{
-
-    const mat2 trf1 = mat2(-1, 2, 1, 2);
-    mat2 trf2 = inv(mat2(p0 - p1, p2 - p1));
-    mat2 trf = trf1 * trf2;
-
-    uv -= p1;
-    vec2 xy = trf * uv;
-    xy.y -= 1.;
-
-    vec2 gradient;
-    gradient.x = 2. * trf[0][0] * (trf[0][0] * uv.x + trf[1][0] * uv.y) - trf[0][1];
-    gradient.y = 2. * trf[1][0] * (trf[0][0] * uv.x + trf[1][0] * uv.y) - trf[1][1];
-
-    return (xy.x * xy.x - xy.y) / length(gradient);
-}
-
-////////////////////////////////
-
-// Modified from http://tog.acm.org/resources/GraphicsGems/gems/Roots3And4.c
-// Credits to Doublefresh for hinting there
-int solve_quadric(vec2 coeffs, inout vec2 roots)
-{
-
-    // normal form: x^2 + px + q = 0
-    float p = coeffs[1] / 2.;
-    float q = coeffs[0];
-
-    float D = p * p - q;
-
-    if (D < 0.)
-    {
-        return 0;
-    }
-    else
-    {
-        roots[0] = -sqrt(D) - p;
-        roots[1] = sqrt(D) - p;
-
-        return 2;
-    }
-}
-
-// From Trisomie21
-// But instead of his cancellation fix i'm using a newton iteration
-int solve_cubic(vec3 coeffs, inout vec3 r)
-{
-
-    float a = coeffs[2];
-    float b = coeffs[1];
-    float c = coeffs[0];
-
-    float p = b - a * a / 3.0;
-    float q = a * (2.0 * a * a - 9.0 * b) / 27.0 + c;
-    float p3 = p * p * p;
-    float d = q * q + 4.0 * p3 / 27.0;
-    float offset = -a / 3.0;
-    if (d >= 0.0)
-    { // Single solution
-        float z = sqrt(d);
-        float u = (-q + z) / 2.0;
-        float v = (-q - z) / 2.0;
-        u = sign(u) * pow(abs(u), 1.0 / 3.0);
-        v = sign(v) * pow(abs(v), 1.0 / 3.0);
-        r[0] = offset + u + v;
-
-        // Single newton iteration to account for cancellation
-        float f = ((r[0] + a) * r[0] + b) * r[0] + c;
-        float f1 = (3. * r[0] + 2. * a) * r[0] + b;
-
-        r[0] -= f / f1;
-
-        return 1;
-    }
-    float u = sqrt(-p / 3.0);
-    float v = acos(-sqrt(-27.0 / p3) * q / 2.0) / 3.0;
-    float m = cos(v), n = sin(v) * 1.732050808;
-
-    // Single newton iteration to account for cancellation
-    //(once for every root)
-    r[0] = offset + u * (m + m);
-    r[1] = offset - u * (n + m);
-    r[2] = offset + u * (n - m);
-
-    vec3 f = ((r + a) * r + b) * r + c;
-    vec3 f1 = (3. * r + 2. * a) * r + b;
-
-    r -= f / f1;
-
-    return 3;
-}
-
-float cubic_bezier_normal_iteration(float t, vec2 a0, vec2 a1, vec2 a2, vec2 a3)
-{
-    // horner's method
-    vec2 a_2 = a2 + t * a3;
-    vec2 a_1 = a1 + t * a_2;
-    vec2 b_2 = a_2 + t * a3;
-
-    vec2 uv_to_p = a0 + t * a_1;
-    vec2 tang = a_1 + t * b_2;
-
-    float l_tang = dot(tang, tang);
-    return t - dot(tang, uv_to_p) / l_tang;
-}
-
-float cubic_bezier_dis_approx_sq(vec2 uv, vec2 p0, vec2 p1, vec2 p2, vec2 p3)
-{
-    vec2 a3 = (-p0 + 3. * p1 - 3. * p2 + p3);
-    vec2 a2 = (3. * p0 - 6. * p1 + 3. * p2);
-    vec2 a1 = (-3. * p0 + 3. * p1);
-    vec2 a0 = p0 - uv;
-
-    float d0 = 1e38;
-
-    float t;
-    vec3 params = vec3(0, .5, 1);
-
-    for (int i = 0; i < 3; i++)
-    {
-        t = params[i];
-        for (int j = 0; j < 3; j++)
-        {
-            t = cubic_bezier_normal_iteration(t, a0, a1, a2, a3);
-        }
-        t = clamp(t, 0., 1.);
-        vec2 uv_to_p = ((a3 * t + a2) * t + a1) * t + a0;
-        d0 = min(d0, dot(uv_to_p, uv_to_p));
-    }
-
-    return d0;
-}
-
-// segment_dis_sq by iq
-float length2(vec2 v)
-{
-    return dot(v, v);
-}
-
-float segment_dis_sq(vec2 p, vec2 a, vec2 b)
-{
-    vec2 pa = p - a, ba = b - a;
-    float h = clamp(dot(pa, ba) / dot(ba, ba), 0.0, 1.0);
-    return length2(pa - ba * h);
-}
-
-int segment_int_test(vec2 uv, vec2 p0, vec2 p1)
-{
-    p0 -= uv;
-    p1 -= uv;
-
-    int ret;
-
-    if (p0.y * p1.y < 0.)
-    {
-        vec2 nor = p0 - p1;
-        nor = vec2(nor.y, -nor.x);
-
-        float sgn;
-
-        if (p0.y > p1.y)
-        {
-            sgn = 1.;
-        }
-        else
-        {
-            sgn = -1.;
-        }
-
-        if (dot(nor, p0) * sgn < 0.)
-        {
-            ret = 0;
-        }
-        else
-        {
-            ret = 1;
-        }
-    }
-    else
-    {
-        ret = 0;
-    }
-
-    return ret;
-}
-
-int cubic_bezier_int_test(vec2 uv, vec2 p0, vec2 p1, vec2 p2, vec2 p3)
-{
-
-    float cu = (-p0.y + 3. * p1.y - 3. * p2.y + p3.y);
-    float qu = (3. * p0.y - 6. * p1.y + 3. * p2.y);
-    float li = (-3. * p0.y + 3. * p1.y);
-    float co = p0.y - uv.y;
-
-    vec3 roots = vec3(1e38);
-    int n_roots;
-
-    int n_ints = 0;
-
-    if (uv.x < min(min(p0.x, p1.x), min(p2.x, p3.x)))
-    {
-        if (uv.y >= min(p0.y, p3.y) && uv.y <= max(p0.y, p3.y))
-        {
-            n_ints = 1;
-        }
-    }
-    else
-    {
-
-        if (abs(cu) < .0001)
-        {
-            n_roots = solve_quadric(vec2(co / qu, li / qu), roots.xy);
-        }
-        else
-        {
-            n_roots = solve_cubic(vec3(co / cu, li / cu, qu / cu), roots);
-        }
-
-        for (int i = 0; i < n_roots; i++)
-        {
-            if (roots[i] >= 0. && roots[i] <= 1.)
-            {
-                float x_pos = -p0.x + 3. * p1.x - 3. * p2.x + p3.x;
-                x_pos = x_pos * roots[i] + 3. * p0.x - 6. * p1.x + 3. * p2.x;
-                x_pos = x_pos * roots[i] + -3. * p0.x + 3. * p1.x;
-                x_pos = x_pos * roots[i] + p0.x;
-
-                if (x_pos > uv.x)
-                {
-                    n_ints++;
-                }
-            }
-        }
-    }
-
-    return n_ints;
-}
-
-float path2_dis_sq(vec2 uv)
-{
-    float dis_sq = 1e38;
-
-    int num_its = 0;
-
-    vec2[45] p = vec2[](vec2(-0.124919, 0.0496896), vec2(-0.127105, 0.0391554), vec2(-0.127105, 0.0405467),
-                        vec2(-0.127105, 0.0463107), vec2(-0.131876, 0.0506833), vec2(-0.143205, 0.0506833),
-                        vec2(-0.177789, 0.0506833), vec2(-0.194286, 0.00795032), vec2(-0.194286, -0.018882),
-                        vec2(-0.194286, -0.0425342), vec2(-0.181366, -0.0508821), vec2(-0.167851, -0.0508821),
-                        vec2(-0.153739, -0.0508821), vec2(-0.144397, -0.0417392), vec2(-0.138236, -0.0325963),
-                        vec2(-0.137043, -0.0445217), vec2(-0.129888, -0.0508821), vec2(-0.118758, -0.0508821),
-                        vec2(-0.108025, -0.0508821), vec2(-0.0901364, -0.0465093), vec2(-0.0788071, -0.0141118),
-                        vec2(-0.087155, -0.0141118), vec2(-0.0901364, -0.0240497), vec2(-0.0955028, -0.0327951),
-                        vec2(-0.103254, -0.0327951), vec2(-0.10882, -0.0327951), vec2(-0.111403, -0.0298137),
-                        vec2(-0.111403, -0.0242485), vec2(-0.111403, -0.0224597), vec2(-0.111205, -0.0204721),
-                        vec2(-0.110609, -0.0178882), vec2(-0.0962985, 0.0496896), vec2(-0.137043, 0.0383603),
-                        vec2(-0.130683, 0.0383603), vec2(-0.128894, 0.0331926), vec2(-0.128894, 0.0308075),
-                        vec2(-0.138435, -0.0141118), vec2(-0.14082, -0.0256398), vec2(-0.149168, -0.0316026),
-                        vec2(-0.154931, -0.0316026), vec2(-0.158509, -0.0316026), vec2(-0.164869, -0.0314042),
-                        vec2(-0.164869, -0.0160994), vec2(-0.164869, 0.00258385), vec2(-0.153938, 0.0383603));
-
-    ivec2[6] seg = ivec2[](ivec2(0, 1), ivec2(1, 2), ivec2(20, 21), ivec2(30, 31), ivec2(31, 0), ivec2(35, 36));
-
-    ivec4[13] c_bez =
-        ivec4[](ivec4(2, 3, 4, 5), ivec4(5, 6, 7, 8), ivec4(8, 9, 10, 11), ivec4(11, 12, 13, 14), ivec4(14, 15, 16, 17),
-                ivec4(17, 18, 19, 20), ivec4(21, 22, 23, 24), ivec4(24, 25, 26, 27), ivec4(27, 28, 29, 30),
-                ivec4(32, 33, 34, 35), ivec4(36, 37, 38, 39), ivec4(39, 40, 41, 42), ivec4(42, 43, 44, 32));
-
-    if (all(lessThan(uv, vec2(-0.0788071, 0.0506833) + border)) &&
-        all(greaterThan(uv, vec2(-0.194286, -0.0508821) - border)))
-    {
-        for (int i = 0; i < 6; i++)
-        {
-            dis_sq = min(dis_sq, segment_dis_sq(uv, p[seg[i][0]], p[seg[i][1]]));
-            num_its += segment_int_test(uv, p[seg[i][0]], p[seg[i][1]]);
-        }
-        for (int i = 0; i < 13; i++)
-        {
-            dis_sq = min(
-                dis_sq, cubic_bezier_dis_approx_sq(uv, p[c_bez[i][0]], p[c_bez[i][1]], p[c_bez[i][2]], p[c_bez[i][3]]));
-            num_its += cubic_bezier_int_test(uv, p[c_bez[i][0]], p[c_bez[i][1]], p[c_bez[i][2]], p[c_bez[i][3]]);
-        }
-    }
-
-    float sgn = 1.;
-
-    if (num_its % 2 == 1)
-    {
-        sgn = -1.;
-    }
-
-    return sgn * dis_sq;
-}
-
-void mainImage(out vec3 fragColor, in vec2 fragCoord)
-{
-    border = 0.01;
-    vec2 uv = fragCoord;
-    uv -= .5;
-
-    float dis_sq = 1e38;
-
-    if (all(lessThan(uv, vec2(0.4, 0.0993791) + border)) && all(greaterThan(uv, vec2(-0.4, -0.0993791) - border)))
-    {
-        dis_sq = min(dis_sq, path2_dis_sq(uv));
-    }
-
-    float dis = sign(dis_sq) * sqrt(abs(dis_sq));
-
-    fragColor = vec3(smoothstep(0., border, dis));
-    if (dis > 0 && dis <= border)
-        fragColor = vec3(1, 1, 0);
-}
-///////////////////////////////
-
-const uint STACK_SIZE = 40;
-
-struct Stack
-{
-    uint top;
-    uint data[STACK_SIZE];
-
-    bool empty()
-    {
-        return top == 0;
-    }
-    bool full()
-    {
-        return top == STACK_SIZE;
-    }
-    bool getTop(out uint x)
-    {
-        if (empty())
-            return false;
-        x = data[top - 1];
-        return true;
-    }
-    bool pop()
-    {
-        if (empty())
-            return false;
-        top--;
-        return true;
-    }
-    bool push(in uint x)
-    {
-        if (full())
-            return false;
-        data[top] = x;
-        top++;
-        return true;
-    }
-} stack, elementStack;
-
-vec3 drawElement(uint elementIndex, vec2 localUV, inout vec3 debugBVH = vec3(0))
-{
-    vec4 elementColor = vec4(0);
-
-    uvec4 currentOffset = elementOffset[elementIndex];
-    uint elementBvhRoot = currentOffset.x;
-    uint elementBvhLength = currentOffset.y;
-    uint pointsOffset = currentOffset.z;
-    uint linesOffset = currentOffset.w;
-
-    elementStack.top = 0;
-    uint elementBvhIndex = 0;
-    while (elementBvhIndex < elementBvhLength || !elementStack.empty())
-    {
-
-        while (elementBvhIndex < elementBvhLength)
-        {
-            vec4 bound = bvhBound[elementBvhRoot + elementBvhIndex];
-            uint leftChild = bvhChildren[elementBvhRoot + elementBvhIndex].x;
-
-            if (all(lessThan(bound.xy, localUV)) && all(lessThan(localUV, bound.zw)))
-            {
-                if (leftChild >= elementBvhLength)
-                {
-                    debugBVH.g += 0.5;
-
-                    uint styleIndex = bvhChildren[elementBvhRoot + elementBvhIndex].y - elementBvhLength;
-                    // for(int i = 0; i<200;i++)
-                    if (elementData[styleIndex] == 0.) //Ãæ
-                    {
-
-                        uint lineCount = elementIndexs[leftChild - elementBvhLength];
-                        uint num_its = 0;
-
-                        for (uint contourIterator = leftChild - elementBvhLength + 1;
-                             contourIterator <= leftChild - elementBvhLength + lineCount; contourIterator++)
-                        {
-                            uint lineIndex = elementIndexs[contourIterator];
-                            uint p0Index = elementIndexs[linesOffset + 4 * lineIndex];
-                            uint p1Index = elementIndexs[linesOffset + 4 * lineIndex + 1];
-                            uint p2Index = elementIndexs[linesOffset + 4 * lineIndex + 2];
-                            uint p3Index = elementIndexs[linesOffset + 4 * lineIndex + 3];
-
-                            vec2 p0 = vec2(elementData[pointsOffset + 2 * p0Index],
-                                           elementData[pointsOffset + 2 * p0Index + 1]);
-                            vec2 p1 = vec2(elementData[pointsOffset + 2 * p1Index],
-                                           elementData[pointsOffset + 2 * p1Index + 1]);
-                            vec2 p2 = vec2(elementData[pointsOffset + 2 * p2Index],
-                                           elementData[pointsOffset + 2 * p2Index + 1]);
-                            vec2 p3 = vec2(elementData[pointsOffset + 2 * p3Index],
-                                           elementData[pointsOffset + 2 * p3Index + 1]);
-
-                            if (p0 == p1 && p2 == p3)
-                            {
-                                num_its += segment_int_test(localUV, p0, p3);
-                            }
-
-                            else
-                                num_its += cubic_bezier_int_test(localUV, p0, p1, p2, p3);
-                        }
-
-                        if (num_its % 2 == 1)
-                        {
-                            elementColor = vec4(1);
-                            //debugHit = true;
-                        }
-                    }
-                    else if (elementData[styleIndex] == 1) //Ïß
-                    {
-                    }
-
-                    elementBvhIndex = elementBvhLength;
-                }
-                else
-                {
-                    // debugBVH.b += 0.2;
-                    elementStack.push(elementBvhIndex);
-                    elementBvhIndex = leftChild;
-                }
-            }
-            else
-                elementBvhIndex = elementBvhLength;
-        }
-        if (!elementStack.empty())
-        {
-            elementStack.getTop(elementBvhIndex);
-            elementStack.pop();
-            elementBvhIndex = bvhChildren[elementBvhRoot + elementBvhIndex].y;
-        }
-    }
-    return elementColor.xyz;
-}
-
-
-
+}

ArchitectureColoredPainting/src/Renderer/IblUtils.cpp

@@ -3,8 +3,11 @@
 #include <QDebug>
 #include <array>
 #include <glm/glm.hpp>
+#ifndef STB_IMAGE_IMPLEMENTATION
 #define STB_IMAGE_IMPLEMENTATION
 #include <stb_image.h>
+#endif
+
 
 void Renderer::IblUtils::renderCube(QOpenGLFunctions_4_5_Core* glFunc)
 {
@@ -179,8 +182,8 @@ std::tuple<GLuint, GLuint, GLuint, GLuint> Renderer::IblUtils::precomputeCubemap
 	// ----------------------
 	unsigned int captureFBO;
 	unsigned int captureRBO;
-	glFunc->glGenFramebuffers(1, &captureFBO);
-	glFunc->glGenRenderbuffers(1, &captureRBO);
+	glFunc->glCreateFramebuffers(1, &captureFBO);
+	glFunc->glCreateRenderbuffers(1, &captureRBO);
 
 	glFunc->glBindFramebuffer(GL_FRAMEBUFFER, captureFBO);
 	glFunc->glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, captureRBO);
@@ -259,10 +262,12 @@ GLuint Renderer::IblUtils::generateCubemap(QOpenGLFunctions_4_5_Core* glFunc, GL
 	glFunc->glActiveTexture(GL_TEXTURE0);
 	glFunc->glBindTexture(GL_TEXTURE_2D, hdrTexture);
 
+	glFunc->glBindRenderbuffer(GL_RENDERBUFFER, captureRBO);
+	glFunc->glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, cubemapSize, cubemapSize);
 	glFunc->glViewport(0, 0, cubemapSize, cubemapSize);
 	glFunc->glBindFramebuffer(GL_FRAMEBUFFER, captureFBO);
 
-	
+
 	for (unsigned int i = 0; i < 6; ++i)
 	{
 		shader.setUniformValue("view", captureViews[i]);
@@ -282,8 +287,6 @@ GLuint Renderer::IblUtils::generateCubemap(QOpenGLFunctions_4_5_Core* glFunc, GL
 
 GLuint Renderer::IblUtils::generateIrradianceMap(QOpenGLFunctions_4_5_Core* glFunc, GLuint captureFBO, GLuint captureRBO, const QMatrix4x4& captureProjection, const std::array<QMatrix4x4, 6>& captureViews, GLuint envCubemap)
 {
-	constexpr int irradianceMapSize = 32;
-
 	// pbr: create an irradiance cubemap, and re-scale capture FBO to irradiance scale.
 	// --------------------------------------------------------------------------------
 	unsigned int irradianceMap;
@@ -334,10 +337,8 @@ GLuint Renderer::IblUtils::generateIrradianceMap(QOpenGLFunctions_4_5_Core* glFu
 
 GLuint Renderer::IblUtils::generatePrefilterMap(QOpenGLFunctions_4_5_Core* glFunc, GLuint captureFBO, GLuint captureRBO, const QMatrix4x4& captureProjection, const std::array<QMatrix4x4, 6>& captureViews, GLuint envCubemap)
 {
-	constexpr int prefilterMapSize = 128;
-
 	// pbr: create a pre-filter cubemap, and re-scale capture FBO to pre-filter scale.
-    // --------------------------------------------------------------------------------
+	// --------------------------------------------------------------------------------
 	unsigned int prefilterMap;
 	glFunc->glGenTextures(1, &prefilterMap);
 	glFunc->glBindTexture(GL_TEXTURE_CUBE_MAP, prefilterMap);
@@ -399,7 +400,7 @@ GLuint Renderer::IblUtils::gererateBrdfLut(QOpenGLFunctions_4_5_Core* glFunc)
 	constexpr int lutSize = 512;
 
 	// pbr: generate a 2D LUT from the BRDF equations used.
-    // ----------------------------------------------------
+	// ----------------------------------------------------
 	unsigned int brdfLUTTexture;
 	glFunc->glGenTextures(1, &brdfLUTTexture);
 

ArchitectureColoredPainting/src/Renderer/IblUtils.h

@@ -7,6 +7,8 @@ namespace Renderer
 	{
 	public:
 		static constexpr int cubemapSize = 1024;
+		static constexpr int irradianceMapSize = 32;
+		static constexpr int prefilterMapSize = 128;
 		static void renderCube(QOpenGLFunctions_4_5_Core* glFunc);
 		static void renderSphere(QOpenGLFunctions_4_5_Core* glFunc);
 		/**

ArchitectureColoredPainting/src/Renderer/Mesh.cpp

@@ -22,12 +22,9 @@ void Mesh::draw()
 {
 	if (shaderProgram->bind())
 	{
-		glFunc->glActiveTexture(GL_TEXTURE0);
-		glFunc->glBindTexture(GL_TEXTURE_2D, textureBasecolor);
-		glFunc->glActiveTexture(GL_TEXTURE1);
-		glFunc->glBindTexture(GL_TEXTURE_2D, textureMetallicRoughness);
-		glFunc->glActiveTexture(GL_TEXTURE2);
-		glFunc->glBindTexture(GL_TEXTURE_2D, textureNormal);
+		glFunc->glBindTextureUnit(0, textureBasecolor);
+		glFunc->glBindTextureUnit(1, textureMetallicRoughness);
+		glFunc->glBindTextureUnit(2, textureNormal);
 		shaderProgram->setUniformValue("texture_basecolor", 0);
 		shaderProgram->setUniformValue("texture_metallic_roughness", 1);
 		shaderProgram->setUniformValue("texture_normal", 2);
@@ -44,8 +41,7 @@ void Mesh::drawShadow()
 {
 	if (shadowProgram->bind())
 	{
-		glFunc->glActiveTexture(GL_TEXTURE0);
-		glFunc->glBindTexture(GL_TEXTURE_2D, textureBasecolor);
+		glFunc->glBindTextureUnit(0, textureBasecolor);
 		shadowProgram->setUniformValue("texture_basecolor", 0);
 
 		QOpenGLVertexArrayObject::Binder bind(&VAO);

ArchitectureColoredPainting/src/Renderer/Mesh.h

@@ -41,9 +41,9 @@ namespace Renderer
 		QVector<Vertex> vertices;
 		QVector<unsigned int> indices;
 		//QVector<Texture*> textures;
-		GLuint textureBasecolor;
-		GLuint textureMetallicRoughness;
-		GLuint textureNormal;
+		GLuint textureBasecolor = 0;
+		GLuint textureMetallicRoughness = 0;
+		GLuint textureNormal = 0;
 
 		QMatrix4x4 model;
 		QOpenGLFunctions_4_5_Compatibility* glFunc;

ArchitectureColoredPainting/src/Renderer/Model.cpp

@@ -14,56 +14,34 @@
 
 using namespace Renderer;
 using std::vector;
-Model::Model(QString path, QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram)
-	: context(context)
-	, glFunc(context->versionFunctions<QOpenGLFunctions_4_5_Compatibility>())
-	, shaderProgram(shaderProgram)
-	, directory(path)
-{
 
-	Assimp::Importer importer;
-	const aiScene* scene = importer.ReadFile(directory.absolutePath().toUtf8(), aiProcess_Triangulate | aiProcess_FlipUVs);
-	if (!scene || scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE || !scene->mRootNode)
-	{
-		qDebug() << "ERROR::ASSIMP::" << importer.GetErrorString() << endl;
-		return;
-	}
-	qDebug() << directory.absolutePath() << "Loaded Successfully";
-	qDebug() << "NumMeshes: " << scene->mNumMeshes;
-	qDebug() << "NumMaterials: " << scene->mNumMaterials;
-	qDebug() << "NumTextures: " << scene->mNumTextures;
-	directory.cdUp();
-	processNode(scene->mRootNode, scene);
-}
-
-Model::Model(QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram, QOpenGLShaderProgram* paintingProgram, QOpenGLShaderProgram* shadowProgram, PaintingHelper* paintingHelper)
+Model::Model(QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram,
+	QOpenGLShaderProgram* paintingProgram, QOpenGLShaderProgram* shadowProgram,
+	PaintingHelper* paintingHelper, VirtualTextureManager* vtManager)
 	: context(context)
 	, glFunc(context->versionFunctions<QOpenGLFunctions_4_5_Compatibility>())
 	, shaderProgram(shaderProgram)
 	, paintingProgram(paintingProgram)
 	, shadowProgram(shadowProgram)
 	, paintingHelper(paintingHelper)
+	, vtManager(vtManager)
 {
-
 }
 
 Model::~Model() //销毁对象
 {
-	for (auto& it : meshes) {
-		delete it;
-	}
 }
 
 void Model::draw() {
 	//shaderProgram->bind();
-	for (Drawable* mesh : meshes) {
+	for (auto& mesh : meshes) {
 		mesh->draw();
 	}
 }
 
 void Model::drawShadow() {
 	//shaderProgram->bind();
-	for (Drawable* mesh : meshes) {
+	for (auto& mesh : meshes) {
 		mesh->drawShadow();
 	}
 }
@@ -74,11 +52,6 @@ void Model::destroy()
 	delete this;
 }
 
-Model* Model::createModel(QString path, QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram)
-{
-	return new Model(path, context, shaderProgram);
-}
-
 void Renderer::Model::loadModel(QString path)
 {
 	directory = path;
@@ -94,6 +67,12 @@ void Renderer::Model::loadModel(QString path)
 	qDebug() << "NumMaterials: " << scene->mNumMaterials;
 	qDebug() << "NumTextures: " << scene->mNumTextures;
 	directory.cdUp();
+	minX = std::numeric_limits<float>::max();
+	maxX = std::numeric_limits<float>::min();
+	minY = std::numeric_limits<float>::max();
+	maxY = std::numeric_limits<float>::min();
+	minZ = std::numeric_limits<float>::max();
+	maxZ = std::numeric_limits<float>::min();
 	processNode(scene->mRootNode, scene);
 	AABB.push_back(QVector3D(minX, minY, minZ));
 	AABB.push_back(QVector3D(minX, minY, maxZ));
@@ -111,8 +90,8 @@ void Model::processNode(aiNode* node, const aiScene* scene, aiMatrix4x4 mat4)
 	// 处理节点所有的网格（如果有的话）
 	for (unsigned int i = 0; i < node->mNumMeshes; i++)
 	{
-		aiMesh* mesh = scene->mMeshes[node->mMeshes[i]];
-		meshes.push_back(processMesh(mesh, scene, mat4));
+		if (auto mesh = processMesh(scene->mMeshes[node->mMeshes[i]], scene, mat4))
+			meshes.emplace_back(std::move(mesh));
 
 	}
 	// 接下来对它的子节点重复这一过程
@@ -131,7 +110,7 @@ GLuint encodeZIndexAngle(GLuint zIndex, float angle)
 	return GLuint(angle / 360 * 65536 + zIndex * 65536);
 }
 
-Drawable* Model::processMesh(aiMesh* mesh, const aiScene* scene, aiMatrix4x4 model)
+std::unique_ptr<Drawable> Model::processMesh(aiMesh* mesh, const aiScene* scene, aiMatrix4x4 model)
 {
 	aiMaterial* material = scene->mMaterials[mesh->mMaterialIndex];
 	QMatrix4x4 modelQ((float*)&model);
@@ -143,7 +122,7 @@ Drawable* Model::processMesh(aiMesh* mesh, const aiScene* scene, aiMatrix4x4 mod
 	{
 		qDebug() << str.C_Str() << "Replaced";
 		//  初始化网格
-		PaintingMesh* m_mesh = new PaintingMesh(glFunc, paintingProgram, shadowProgram, modelQ);
+		auto m_mesh = std::make_unique<PaintingMesh>(glFunc, paintingProgram, shadowProgram, modelQ);
 		// 遍历网格的每个顶点
 		for (unsigned int i = 0; i < mesh->mNumVertices; i++)
 		{
@@ -169,14 +148,17 @@ Drawable* Model::processMesh(aiMesh* mesh, const aiScene* scene, aiMatrix4x4 mod
 			}
 		}
 
-		m_mesh->paintingIndex = loadPainting(std::string(str.C_Str()));
+		m_mesh->paintingId = loadPainting(std::string(str.C_Str()));
+		auto& handle = vtManager->getPaintingHandle(m_mesh->paintingId);
+		m_mesh->textureBasecolor = handle.baseColor;
+		m_mesh->textureMetallicRoughness = handle.metallicRoughness;
 		m_mesh->setupMesh();
 		return m_mesh;
 	}
 	else
 	{
 		//  初始化网格
-		Mesh* m_mesh = new Mesh(glFunc, shaderProgram, shadowProgram, modelQ);
+		auto m_mesh = std::make_unique<Mesh>(glFunc, shaderProgram, shadowProgram, modelQ);
 		// 遍历网格的每个顶点
 		for (unsigned int i = 0; i < mesh->mNumVertices; i++)
 		{
@@ -199,12 +181,21 @@ Drawable* Model::processMesh(aiMesh* mesh, const aiScene* scene, aiMatrix4x4 mod
 				m_mesh->indices.push_back(*indice);
 
 		// 处理材质
-		m_mesh->textureBasecolor = loadMaterialTextures(material, aiTextureType_BASE_COLOR);
-		m_mesh->textureMetallicRoughness = loadMaterialTextures(material, aiTextureType_METALNESS);
-		m_mesh->textureNormal = loadMaterialTextures(material, aiTextureType_NORMALS);
+		if (!(m_mesh->textureBasecolor = loadMaterialTextures(material, aiTextureType_BASE_COLOR)))
+			qWarning() << "Basecolor Texture Loading Failed!";
+		if (!(m_mesh->textureMetallicRoughness = loadMaterialTextures(material, aiTextureType_METALNESS)))
+			qWarning() << "MetallicRoughness Texture Loading Failed!";
+		if (!(m_mesh->textureNormal = loadMaterialTextures(material, aiTextureType_NORMALS)))
+			qWarning() << "Normal Texture Loading Failed!";
+
+		if (m_mesh->textureBasecolor && m_mesh->textureMetallicRoughness && m_mesh->textureNormal)
+		{
+			m_mesh->setupMesh();
+			return m_mesh;
+		}
+		else
+			return nullptr;
 
-		m_mesh->setupMesh();
-		return m_mesh;
 	}
 }
 
@@ -226,7 +217,7 @@ GLuint Model::loadMaterialTextures(aiMaterial* mat, aiTextureType type)
 		return 0;
 
 	//qDebug() << "Loading" << path.c_str();
-	auto [it, _] = texturesLoaded.emplace(std::piecewise_construct, std::make_tuple(path), std::make_tuple(QOpenGLTexture::Target2D));
+	auto [it, _] = texturesLoaded.emplace(path, QOpenGLTexture::Target2D);
 	auto& texture = it->second;
 	texture.create();
 	texture.setWrapMode(QOpenGLTexture::DirectionS, QOpenGLTexture::Repeat);
@@ -320,15 +311,17 @@ GLuint Renderer::Model::loadPainting(std::string path)
 		std::make_shared<Element>(Element{ contour[2], style[0]}),
 	};
 	Painting painting;
-	//for (int i = 0; i < 3; i++)
-	//{
-	//	float x = (float)rand() / RAND_MAX * 2 - 1;
-	//	float y = (float)rand() / RAND_MAX * 2 - 1;
-	//	float z = 0.05 + x;//(float)rand() / RAND_MAX * (0.1) + x;
-	//	float w = 0.05 + y;//(float)rand() / RAND_MAX * (0.1) + y;
-	//	//rootBvhTreeData.push_back(BvhTreeData(QVector4D(x, y, z, w), 0, encodeZIndexAngle(1, (float)rand() / RAND_MAX * 360)));
-	//	painting.addElement(element[i%3], QVector4D(x, y, z, w), (float)rand() / RAND_MAX * 360, 1);
-	//}
+	for (int i = 0; i < 1000; i++)
+	{
+		float x = (float)rand() / RAND_MAX * 2 - 1;
+		float y = (float)rand() / RAND_MAX * 2 - 1;
+		float z = 0.05 + x;//(float)rand() / RAND_MAX * (0.1) + x;
+		float w = 0.05 + y;//(float)rand() / RAND_MAX * (0.1) + y;
+		//rootBvhTreeData.push_back(BvhTreeData(QVector4D(x, y, z, w), 0, encodeZIndexAngle(1, (float)rand() / RAND_MAX * 360)));
+		//painting.addElement(element[i%3], QVector4D(x, y, z, w), (float)rand() / RAND_MAX * 360, 1);
+		//painting.addElement(*element[i%3], ElementTransform{ glm::vec2(x,y), glm::vec2(0.05), (float)rand() / RAND_MAX * 360, glm::bvec2(false), 0 });
+
+	}
 	painting.addElement(*element[0], ElementTransform{ glm::vec2(-0.5,-0.45), glm::vec2(0.6,0.7), 45, glm::bvec2(true, false), 0 });
 	painting.addElement(*element[1], ElementTransform{ glm::vec2(-0.45,0.45), glm::vec2(0.5,0.5), 0, glm::bvec2(false), 0 });
 	painting.addElement(*element[2], ElementTransform{ glm::vec2(0.5,-0.45), glm::vec2(0.6,0.7), 0, glm::bvec2(false), 0 });
@@ -338,7 +331,7 @@ GLuint Renderer::Model::loadPainting(std::string path)
 	//painting.addElement(element[1], QVector4D(-0.7, 0.2, -0.2, 0.7), 0, 0);
 	//painting.addElement(element[2], QVector4D(0.2, -0.8, 0.8, -0.1), 0, 0);
 
-	painting.generateBuffers();
+	painting.generateBuffers(glFunc);
 	/////////////////////////////////////////////////////////////////////////////////////////////////
 	std::vector<GLuint> bvhChildren0 = {
 		//root
@@ -474,7 +467,10 @@ GLuint Renderer::Model::loadPainting(std::string path)
 	//	elementOffset, elementIndex, elementData);
 	/*GLuint index = paintingHelper->addPainting(bvhChildren0, bvhBounds0,
 		elementOffset0, elementIndex0, elementData0);*/
-	GLuint index = paintingHelper->addPainting(painting);
-	paintingLoaded.insert({ path, index });
+		//GLuint index = paintingHelper->addPainting(painting);
+		//paintingLoaded.insert({ path, index });
+
+	auto index = vtManager->createVirtualTexture(painting);
+	paintingLoaded.emplace(path, index);
 	return index;
 }

ArchitectureColoredPainting/src/Renderer/Model.h

@@ -2,6 +2,7 @@
 #include "Mesh.h"
 #include "Drawable.h"
 #include "Painting/PaintingHelper.h"
+#include "VirtualTextureManager.h"
 #include <QDir>
 #include <assimp/scene.h>
 
@@ -15,39 +16,33 @@ namespace Renderer
 		void draw();
 		void drawShadow();
 		void destroy();
-		static Model* createModel(QString path, QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram);
 		void loadModel(QString path);
-		Model(QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram, QOpenGLShaderProgram* paintingProgram, QOpenGLShaderProgram* shadowProgram, PaintingHelper* paintingHelper);
+		Model(QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram, QOpenGLShaderProgram* paintingProgram, QOpenGLShaderProgram* shadowProgram, PaintingHelper* paintingHelper, VirtualTextureManager* vtManager);
 	private:
-		Model(QString path, QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram);
-
 		~Model();
-		QOpenGLContext* context;                //opengl函数入口
-		QOpenGLFunctions_4_5_Compatibility* glFunc;
+		QOpenGLContext* context;
+		QOpenGLFunctions_4_5_Compatibility* glFunc = nullptr;
 		QOpenGLShaderProgram* shaderProgram = nullptr;
 		QOpenGLShaderProgram* paintingProgram = nullptr;  //彩绘着色器程序
 		QOpenGLShaderProgram* shadowProgram = nullptr;
 		PaintingHelper* paintingHelper = nullptr;
+		VirtualTextureManager* vtManager = nullptr;
 
 		/*  模型数据  */
 		std::unordered_map<std::string, GLuint> paintingLoaded;
 		std::unordered_map<std::string, QOpenGLTexture> texturesLoaded;
-		//std::vector<Texture*> textures_loaded;      //纹理
-		QVector<Drawable*> meshes;                  //网格
-		QDir directory;                         //模型所在路径
+		std::vector<std::unique_ptr<Drawable>> meshes;
 
-		float minX = std::numeric_limits<float>::max();
-		float maxX = std::numeric_limits<float>::min();
-		float minY = std::numeric_limits<float>::max();
-		float maxY = std::numeric_limits<float>::min();
-		float minZ = std::numeric_limits<float>::max();
-		float maxZ = std::numeric_limits<float>::min();
+		/// Ä£ÐÍËùÔÚ·¾¶
+		QDir directory;
+
+		float minX, maxX, minY, maxY, minZ, maxZ;
 
 		//递归遍历结点
 		void processNode(aiNode* node, const aiScene* scene, aiMatrix4x4 mat4 = aiMatrix4x4());
 
 		//加载网格
-		Drawable* processMesh(aiMesh* mesh, const aiScene* scene, aiMatrix4x4 model);
+		std::unique_ptr<Drawable> processMesh(aiMesh* mesh, const aiScene* scene, aiMatrix4x4 model);
 
 		//加载材质纹理
 		GLuint loadMaterialTextures(aiMaterial* mat, aiTextureType type);

ArchitectureColoredPainting/src/Renderer/Painting/BaseStyle.h

@@ -1,6 +1,7 @@
 #pragma once
-#include <QOpenGLFunctions_4_5_Compatibility>
+#include <qopengl.h>
 #include <vector>
+#include <memory>
 #include <QColor>
 #include <glm/glm.hpp>
 

ArchitectureColoredPainting/src/Renderer/Painting/Element.h

@@ -1,6 +1,6 @@
 #pragma once
 #include <vector>
-#include <QOpenGLFunctions_4_5_Compatibility>
+#include <qopengl.h>
 #include "Line.h"
 #include "ElementStyle.h"
 

ArchitectureColoredPainting/src/Renderer/Painting/ElementStyle.h

@@ -1,6 +1,5 @@
 #pragma once
 #include <vector>
-#include <QOpenGLFunctions_4_5_Compatibility>
 #include "BaseStyle.h"
 
 namespace Renderer

ArchitectureColoredPainting/src/Renderer/Painting/MaterialStyleStroke.h

@@ -1,5 +1,6 @@
 #pragma once
 #include "BaseStyle.h"
+#include <map>
 
 namespace Renderer
 {

ArchitectureColoredPainting/src/Renderer/Painting/Painting.cpp

@@ -105,13 +105,12 @@ BvhTreeData Painting::encodeElementLeaf(ElementWithTransform e)
 	return BvhTreeData(bound, elementPool[e.element], rightSon);
 }
 
-void Painting::generateBuffers()
+void Painting::generateBuffers(QOpenGLFunctions_4_5_Compatibility* glFunc)
 {
 	qDebug() << "Element Count: " << elementPool.size();
 	qDebug() << "Coutour Count: " << contourPool.size();
 	qDebug() << "  Style Count: " << stylePool.size();
 
-
 	bvhChildren.clear();
 	bvhBounds.clear();
 	elementOffset.clear();
@@ -161,6 +160,19 @@ void Painting::generateBuffers()
 		elementOffset.push_back({ contourBuffer->bvhOffset, stylePool[i.first.style], contourBuffer->pointsOffset, contourBuffer->linesOffset });
 		//std::cout << std::format("{} {} {} {}\n", contourBuffer->bvhOffset, stylePool[i.first->style], contourBuffer->pointsOffset, contourBuffer->linesOffset);
 	}
+
+	glFunc->glCreateBuffers(5, buffers.data());
+	GLuint& bvhSSBO = buffers[0];
+	GLuint& bvhBoundSSBO = buffers[1];
+	GLuint& elementOffsetSSBO = buffers[2];
+	GLuint& elementIndexSSBO = buffers[3];
+	GLuint& elementDataSSBO = buffers[4];
+
+	glFunc->glNamedBufferData(bvhSSBO, bvhChildren.size() * sizeof(GLuint), bvhChildren.data(), GL_STATIC_READ);
+	glFunc->glNamedBufferData(bvhBoundSSBO, bvhBounds.size() * sizeof(QVector4D), bvhBounds.data(), GL_STATIC_READ);
+	glFunc->glNamedBufferData(elementOffsetSSBO, elementOffset.size() * sizeof(glm::uvec4), elementOffset.data(), GL_STATIC_READ);
+	glFunc->glNamedBufferData(elementIndexSSBO, elementIndex.size() * sizeof(GLuint), elementIndex.data(), GL_STATIC_READ);
+	glFunc->glNamedBufferData(elementDataSSBO, elementData.size() * sizeof(GLfloat), elementData.data(), GL_STATIC_READ);
 }
 
 GLuint Renderer::Painting::getElementCount()

ArchitectureColoredPainting/src/Renderer/Painting/Painting.h

@@ -1,12 +1,13 @@
 #pragma once
 #include <vector>
+#include <array>
 #include <set>
-#include <QOpenGLFunctions_4_5_Compatibility>
 #include <glm/glm.hpp>
 #include "Line.h"
 #include "BvhTree.h"
 #include "ElementStyle.h"
 #include "Element.h"
+#include <QOpenGLFunctions_4_5_Compatibility>
 
 namespace Renderer
 {
@@ -65,12 +66,13 @@ namespace Renderer
 		std::vector<GLuint> elementIndex;
 		std::vector<GLfloat> elementData;
 		int paintingId = 0;
+		std::array<GLuint, 5> buffers;
 
 		Painting();
 		void addElement(ElementWithTransform element);
 		void addElement(const Element& element, const ElementTransform& transform);
 		void addElement(std::shared_ptr<Element> element, QVector4D bound, float rotation, int zIndex);
-		void generateBuffers();
+		void generateBuffers(QOpenGLFunctions_4_5_Compatibility* glFunc);
 		GLuint getElementCount();
 	private:
 		std::unordered_map<std::shared_ptr<Contour>, std::pair<std::shared_ptr<ContourBuffer>/*Ãæ*/, std::shared_ptr<ContourBuffer>/*Ïß*/>> contourPool;

ArchitectureColoredPainting/src/Renderer/PaintingMesh.cpp

@@ -13,8 +13,14 @@ void PaintingMesh::draw()
 {
     if (shaderProgram->bind())
     {
+        glFunc->glBindTextureUnit(0, textureBasecolor);
+        glFunc->glBindTextureUnit(1, textureMetallicRoughness);
+        shaderProgram->setUniformValue("texture_basecolor", 0);
+        shaderProgram->setUniformValue("texture_metallic_roughness", 1);
+
         QOpenGLVertexArrayObject::Binder bind(&VAO);
         shaderProgram->setUniformValue("model", model);
+        glFunc->glUniform1ui(glFunc->glGetUniformLocation(shaderProgram->programId(), "paintingId"), paintingId);
         EBO.bind();
         glFunc->glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, 0);
         shaderProgram->release();
@@ -24,6 +30,8 @@ void PaintingMesh::drawShadow()
 {
     if (shadowProgram->bind())
     {
+        glFunc->glBindTextureUnit(0, textureBasecolor);
+        shadowProgram->setUniformValue("texture_basecolor", 0);
         QOpenGLVertexArrayObject::Binder bind(&VAO);
         shadowProgram->setUniformValue("model", model);
         EBO.bind();

ArchitectureColoredPainting/src/Renderer/PaintingMesh.h

@@ -25,7 +25,7 @@ namespace Renderer
 		QMatrix4x4 model;
 		QOpenGLFunctions_4_5_Compatibility* glFunc;
 		QOpenGLShaderProgram* shaderProgram, * shadowProgram;
-		GLuint paintingIndex;
+		GLuint paintingId;
 
 		PaintingMesh(QOpenGLFunctions_4_5_Compatibility* glFunc, QOpenGLShaderProgram* shaderProgram, QOpenGLShaderProgram* shadowProgram, const QMatrix4x4& model);
 		void draw() override;

ArchitectureColoredPainting/src/Renderer/RendererGLWidget.cpp

@@ -9,6 +9,8 @@
 #include <random>
 #include <glm/gtc/matrix_transform.hpp>
 #include "IblUtils.h"
+#include "VirtualTextureManager.h"
+#include <QDebug>
 
 using namespace Renderer;
 
@@ -24,8 +26,9 @@ RendererGLWidget::RendererGLWidget(QWidget* parent)
 	//startTimer();
 	lastFrame = std::clock();
 	setFocusPolicy(Qt::StrongFocus);
-	QSurfaceFormat format;
-	format.setSwapInterval(0);
+	//QSurfaceFormat format;
+	//format.setProfile(QSurfaceFormat::CoreProfile);
+	////format.setSwapInterval(0);
 	//setFormat(format);
 }
 
@@ -58,7 +61,10 @@ void RendererGLWidget::startTimer()
 {
 	//startTimer(1000 / QGuiApplication::primaryScreen()->refreshRate());
 	if (timerId == -1)
+	{
 		timerId = QObject::startTimer(1);
+
+	}
 }
 
 void RendererGLWidget::stopTimer()
@@ -74,10 +80,10 @@ void RendererGLWidget::setModel()
 	//model = new Model("E:\\3D Objects\\gallery_gltf\\gallery_gltf.gltf", context(), modelProgramPtr, paintingProgramPtr, shadowProgramPtr, paintingHelper);
 	light.model = model;
 	qDebug() << model->AABB;
-	paintingHelper->allocateBuffers();
-	paintingCompProgramPtr->bind();
-	paintingHelper->bindPaintingBuffers();
-	paintingCompProgramPtr->release();
+	//paintingHelper->allocateBuffers();
+	//paintingCompProgramPtr->bind();
+	//paintingHelper->bindPaintingBuffers();
+	//paintingCompProgramPtr->release();
 	doneCurrent();
 }
 
@@ -100,16 +106,35 @@ void Renderer::RendererGLWidget::setExposure(float exposure)
 
 QOpenGLTexture randomMap(QOpenGLTexture::Target2D);
 
+void GLAPIENTRY messageCallback(GLenum source,
+	GLenum type,
+	GLuint id,
+	GLenum severity,
+	GLsizei length,
+	const GLchar* message,
+	const void* userParam)
+{
+	//fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n",
+	//	(type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : ""),
+	//	type, severity, message);
+	if (type == GL_DEBUG_TYPE_ERROR)
+		qCritical() << QString::fromStdString(std::format("GL_ERROR: type = {:#x}, severity = {:#x}, message = {}",
+			type, severity, message));
+}
 
 void RendererGLWidget::initializeGL()
 {
 	gl = std::make_unique<GladGLContext>();
 	if (!gladLoadGLContext(gl.get(), [](const char* name) { return (GLADapiproc)QOpenGLContext::currentContext()->getProcAddress(name); }))
-		qDebug() << "Failed to initialize GLAD";
-	
+		qCritical() << "Failed to initialize GLAD";
+
 	QOpenGLFunctions_4_5_Core* glFunc = QOpenGLContext::currentContext()->versionFunctions<QOpenGLFunctions_4_5_Core>();
 	qDebug() << "GL_VERSION" << (char*)gl->GetString(GL_VERSION);
 
+	gl->Enable(GL_DEBUG_OUTPUT);
+	//gl->Enable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
+	gl->DebugMessageCallback(messageCallback, 0);
+
 	gl->Enable(GL_DEPTH_TEST);
 	gl->DepthFunc(GL_LEQUAL);
 	gl->Enable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
@@ -117,83 +142,83 @@ void RendererGLWidget::initializeGL()
 
 	shadowProgramPtr = new QOpenGLShaderProgram;
 	if (!shadowProgramPtr->addShaderFromSourceFile(QOpenGLShader::Vertex, ":/Shaders/model_shadow.vert"))
-		qDebug() << "ERROR:" << shadowProgramPtr->log();
+		qCritical() << "ERROR:" << shadowProgramPtr->log();
 	if (!shadowProgramPtr->addShaderFromSourceFile(QOpenGLShader::Geometry, ":/Shaders/model_shadow.geom"))
-		qDebug() << "ERROR:" << shadowProgramPtr->log();
+		qCritical() << "ERROR:" << shadowProgramPtr->log();
 	if (!shadowProgramPtr->addShaderFromSourceFile(QOpenGLShader::Fragment, ":/Shaders/model_shadow.frag"))
-		qDebug() << "ERROR:" << shadowProgramPtr->log();
+		qCritical() << "ERROR:" << shadowProgramPtr->log();
 	if (!shadowProgramPtr->link())
-		qDebug() << "ERROR:" << shadowProgramPtr->log();
+		qCritical() << "ERROR:" << shadowProgramPtr->log();
 
 	plainProgramPtr = new QOpenGLShaderProgram;
 	if (!plainProgramPtr->addShaderFromSourceFile(QOpenGLShader::Vertex, ":/Shaders/shader.vert"))
-		qDebug() << "ERROR:" << plainProgramPtr->log();
+		qCritical() << "ERROR:" << plainProgramPtr->log();
 	if (!plainProgramPtr->addShaderFromSourceFile(QOpenGLShader::Fragment, ":/Shaders/shader.frag"))
-		qDebug() << "ERROR:" << plainProgramPtr->log();
+		qCritical() << "ERROR:" << plainProgramPtr->log();
 	if (!plainProgramPtr->link())
-		qDebug() << "ERROR:" << plainProgramPtr->log();
+		qCritical() << "ERROR:" << plainProgramPtr->log();
 
 	modelProgramPtr = new QOpenGLShaderProgram;
 	if (!modelProgramPtr->addShaderFromSourceFile(QOpenGLShader::Vertex, ":/Shaders/model.vert"))
-		qDebug() << "ERROR:" << modelProgramPtr->log();
+		qCritical() << "ERROR:" << modelProgramPtr->log();
 	if (!modelProgramPtr->addShaderFromSourceFile(QOpenGLShader::Fragment, ":/Shaders/model.frag"))
-		qDebug() << "ERROR:" << modelProgramPtr->log();
+		qCritical() << "ERROR:" << modelProgramPtr->log();
 	if (!modelProgramPtr->link())
-		qDebug() << "ERROR:" << modelProgramPtr->log();
+		qCritical() << "ERROR:" << modelProgramPtr->log();
 
 	paintingProgramPtr = new QOpenGLShaderProgram;
 	if (!paintingProgramPtr->addShaderFromSourceFile(QOpenGLShader::Vertex, ":/Shaders/painting.vert"))
-		qDebug() << "ERROR:" << paintingProgramPtr->log();
+		qCritical() << "ERROR:" << paintingProgramPtr->log();
 	if (!paintingProgramPtr->addShaderFromSourceFile(QOpenGLShader::Fragment, ":/Shaders/painting.frag"))
-		qDebug() << "ERROR:" << paintingProgramPtr->log();
+		qCritical() << "ERROR:" << paintingProgramPtr->log();
 	if (!paintingProgramPtr->link())
-		qDebug() << "ERROR:" << paintingProgramPtr->log();
+		qCritical() << "ERROR:" << paintingProgramPtr->log();
 
-	paintingCompProgramPtr = new QOpenGLShaderProgram;
-	if (!paintingCompProgramPtr->addShaderFromSourceFile(QOpenGLShader::Compute, ":/Shaders/painting.comp"))
-		qDebug() << "ERROR:" << paintingCompProgramPtr->log();
-	if (!paintingCompProgramPtr->link())
-		qDebug() << "ERROR:" << paintingCompProgramPtr->log();
+	pageIdDownsampleProgramPtr = new QOpenGLShaderProgram;
+	if (!pageIdDownsampleProgramPtr->addShaderFromSourceFile(QOpenGLShader::Compute, ":/Shaders/pageId_downsample.comp"))
+		qCritical() << "ERROR:" << pageIdDownsampleProgramPtr->log();
+	if (!pageIdDownsampleProgramPtr->link())
+		qCritical() << "ERROR:" << pageIdDownsampleProgramPtr->log();
 
 	depthInitProgramPtr = new QOpenGLShaderProgram;
 	if (!depthInitProgramPtr->addShaderFromSourceFile(QOpenGLShader::Compute, ":/Shaders/depth_init.comp"))
-		qDebug() << "ERROR:" << depthInitProgramPtr->log();
+		qCritical() << "ERROR:" << depthInitProgramPtr->log();
 	if (!depthInitProgramPtr->link())
-		qDebug() << "ERROR:" << depthInitProgramPtr->log();
+		qCritical() << "ERROR:" << depthInitProgramPtr->log();
 
 	depthMipmapProgramPtr = new QOpenGLShaderProgram;
 	if (!depthMipmapProgramPtr->addShaderFromSourceFile(QOpenGLShader::Compute, ":/Shaders/depth_mipmap.comp"))
-		qDebug() << "ERROR:" << depthMipmapProgramPtr->log();
+		qCritical() << "ERROR:" << depthMipmapProgramPtr->log();
 	if (!depthMipmapProgramPtr->link())
-		qDebug() << "ERROR:" << depthMipmapProgramPtr->log();
+		qCritical() << "ERROR:" << depthMipmapProgramPtr->log();
 
 	shadowMappingProgramPtr = new QOpenGLShaderProgram;
 	if (!shadowMappingProgramPtr->addShaderFromSourceFile(QOpenGLShader::Compute, ":/Shaders/shadow_mapping.comp"))
-		qDebug() << "ERROR:" << shadowMappingProgramPtr->log();
+		qCritical() << "ERROR:" << shadowMappingProgramPtr->log();
 	if (!shadowMappingProgramPtr->link())
-		qDebug() << "ERROR:" << shadowMappingProgramPtr->log();
+		qCritical() << "ERROR:" << shadowMappingProgramPtr->log();
 
 	ssgiProgramPtr = new QOpenGLShaderProgram;
 	if (!ssgiProgramPtr->addShaderFromSourceFile(QOpenGLShader::Compute, ":/Shaders/ssgi.comp"))
-		qDebug() << "ERROR:" << ssgiProgramPtr->log();
+		qCritical() << "ERROR:" << ssgiProgramPtr->log();
 	if (!ssgiProgramPtr->link())
-		qDebug() << "ERROR:" << ssgiProgramPtr->log();
+		qCritical() << "ERROR:" << ssgiProgramPtr->log();
 
 	finalProgramPtr = new QOpenGLShaderProgram;
 	if (!finalProgramPtr->addShaderFromSourceFile(QOpenGLShader::Vertex, ":/Shaders/final.vert"))
-		qDebug() << "ERROR:" << finalProgramPtr->log();
+		qCritical() << "ERROR:" << finalProgramPtr->log();
 	if (!finalProgramPtr->addShaderFromSourceFile(QOpenGLShader::Fragment, ":/Shaders/final.frag"))
-		qDebug() << "ERROR:" << finalProgramPtr->log();
+		qCritical() << "ERROR:" << finalProgramPtr->log();
 	if (!finalProgramPtr->link())
-		qDebug() << "ERROR:" << finalProgramPtr->log();
+		qCritical() << "ERROR:" << finalProgramPtr->log();
 
 	skyBoxProgramPtr = new QOpenGLShaderProgram;
 	if (!skyBoxProgramPtr->addShaderFromSourceFile(QOpenGLShader::Vertex, ":/Shaders/skybox.vert"))
-		qDebug() << "ERROR:" << skyBoxProgramPtr->log();
+		qCritical() << "ERROR:" << skyBoxProgramPtr->log();
 	if (!skyBoxProgramPtr->addShaderFromSourceFile(QOpenGLShader::Fragment, ":/Shaders/skybox.frag"))
-		qDebug() << "ERROR:" << skyBoxProgramPtr->log();
+		qCritical() << "ERROR:" << skyBoxProgramPtr->log();
 	if (!skyBoxProgramPtr->link())
-		qDebug() << "ERROR:" << skyBoxProgramPtr->log();
+		qCritical() << "ERROR:" << skyBoxProgramPtr->log();
 
 	shadowProgramPtr->bind();
 	gl->GenBuffers(1, &lightSpaceMatricesUBO);
@@ -231,8 +256,10 @@ void RendererGLWidget::initializeGL()
 	finalProgramPtr->setUniformValue("gBaseColor", 0);
 	finalProgramPtr->release();
 
+	vtManager = std::make_unique<VirtualTextureManager>(gl.get());
+
 	paintingHelper = new PaintingHelper(glFunc);
-	model = new Model(context(), modelProgramPtr, paintingProgramPtr, shadowProgramPtr, paintingHelper);
+	model = new Model(context(), modelProgramPtr, paintingProgramPtr, shadowProgramPtr, paintingHelper, vtManager.get());
 
 	skyBoxProgramPtr->bind();
 	skyBoxProgramPtr->setUniformValue("environmentMap", 0);
@@ -262,14 +289,30 @@ void RendererGLWidget::initializeGL()
 		reinterpret_cast<void*>(3 * sizeof(GLfloat)));
 	quadVBO.release();
 
-
-
+	gl->GenQueries(1, &timeQuery);
 }
 
 void RendererGLWidget::paintGL()
 {
 	QOpenGLFunctions_4_5_Core* glFunc = QOpenGLContext::currentContext()->versionFunctions<QOpenGLFunctions_4_5_Core>();
 
+	pageIdDownsampleProgramPtr->bind();
+	gl->BindImageTexture(3, gbuffers[4], 0, GL_FALSE, 0, GL_READ_WRITE, GL_RG16UI);
+	gl->DispatchCompute(ceil(frameWidth / 8. / 8.), ceil(frameWidth / 8. / 8.), 1);
+	pageIdDownsampleProgramPtr->release();
+	std::vector<glm::u16vec2> pixels;
+	pixels.resize(ceil(frameWidth / 8.) * ceil(frameHeight / 8.));
+	fboPtr->bind();
+	gl->ReadBuffer(GL_COLOR_ATTACHMENT4);
+	gl->ReadnPixels(0, 0, ceil(frameWidth / 8.), ceil(frameHeight / 8.), GL_RG_INTEGER, GL_UNSIGNED_SHORT, pixels.size() * sizeof(glm::u16vec2), pixels.data());
+	//gl->GetTextureSubImage(gbuffers[4], 0, 0, 0, 0, ceil(frameWidth / 8.), ceil(frameHeight / 8.), 1, GL_RG_INTEGER, GL_UNSIGNED_SHORT, pixels.size() * sizeof(glm::u16vec2), pixels.data());
+	fboPtr->release();
+	vtManager->tryUpdatePages(pixels);
+
+
+	gl->BeginQuery(GL_TIME_ELAPSED, timeQuery);
+
+
 	gl->Enable(GL_CULL_FACE);
 
 	light.lightDirection.setX(cos(qDegreesToRadians(sunPitch)) * cos(qDegreesToRadians(sunYaw)));
@@ -285,6 +328,7 @@ void RendererGLWidget::paintGL()
 	}
 	gl->BindBuffer(GL_UNIFORM_BUFFER, 0);
 
+	vtManager->commitMutex.lock();
 	{
 		gl->BindFramebuffer(GL_FRAMEBUFFER, shadowFboHandle);
 		gl->Viewport(0, 0, shadowMapResolution, shadowMapResolution);
@@ -314,7 +358,7 @@ void RendererGLWidget::paintGL()
 		paintingProgramPtr->release();
 		if (model != nullptr)
 			model->draw();
-		
+
 		plainProgramPtr->bind();
 		plainProgramPtr->setUniformValue("projection", projection);
 		plainProgramPtr->setUniformValue("view", view);
@@ -328,52 +372,37 @@ void RendererGLWidget::paintGL()
 			for (int col = 0; col < nrColumns; ++col)
 			{
 				plainProgramPtr->setUniformValue("roughness", glm::clamp((float)col / (float)nrColumns, 0.05f, 1.0f));
-				
+
 				model.setToIdentity();
 				model.scale(10);
 				model.translate(QVector3D((float)(col - (nrColumns / 2)) * spacing,
-					(float)(row - (nrRows / 2)) * spacing+20,
+					(float)(row - (nrRows / 2)) * spacing + 20,
 					-2.0f));
 				plainProgramPtr->setUniformValue("model", model);
 				IblUtils::renderSphere(glFunc);
 			}
 		}
 		plainProgramPtr->release();
-
 		fboPtr->release();
 	}
+	gl->Finish();
+	vtManager->commitMutex.unlock();
 
-	GLuint paintingCompQuery;
-	gl->GenQueries(1, &paintingCompQuery);
-	gl->BeginQuery(GL_TIME_ELAPSED, paintingCompQuery);
+	//depthInitProgramPtr->bind();
+	//gl->ActiveTexture(GL_TEXTURE0);
+	//gl->BindTexture(GL_TEXTURE_2D, gbuffers[6]);
+	//gl->BindImageTexture(0, gbuffers[7], 0, GL_FALSE, 0, GL_READ_WRITE, GL_R32F);
+	//gl->DispatchCompute(ceil(depthWidth / 8.), ceil(depthHeight / 8.), 1);
+	//depthInitProgramPtr->release();
 
-	paintingCompProgramPtr->bind();
-	gl->BindImageTexture(0, gbuffers[0], 0, GL_FALSE, 0, GL_READ_WRITE, GL_RGBA8);
-	gl->BindImageTexture(1, gbuffers[3], 0, GL_FALSE, 0, GL_READ_WRITE, GL_RG8);
-	gl->BindImageTexture(2, gbuffers[4], 0, GL_FALSE, 0, GL_READ_WRITE, GL_R16UI);
-	gl->BindImageTexture(3, gbuffers[5], 0, GL_FALSE, 0, GL_READ_WRITE, GL_RG32F);
-
-	gl->DispatchCompute(ceil(frameWidth / 8.), ceil(frameHeight / 8.), 1);
-	paintingCompProgramPtr->release();
-
-	gl->EndQuery(GL_TIME_ELAPSED);
-
-
-	depthInitProgramPtr->bind();
-	gl->ActiveTexture(GL_TEXTURE0);
-	gl->BindTexture(GL_TEXTURE_2D, gbuffers[6]);
-	gl->BindImageTexture(0, gbuffers[7], 0, GL_FALSE, 0, GL_READ_WRITE, GL_R32F);
-	gl->DispatchCompute(ceil(depthWidth / 8.), ceil(depthHeight / 8.), 1);
-	depthInitProgramPtr->release();
-
-	depthMipmapProgramPtr->bind();
-	for (int i = 0; i <= 3; i++)
-		gl->BindImageTexture(i, gbuffers[7], i, GL_FALSE, 0, GL_READ_WRITE, GL_R32F);
-	gl->DispatchCompute(ceil(depthWidth / 2. / 8.), ceil(depthHeight / 2. / 8.), 1);
-	for (int i = 0; i <= 3; i++)
-		gl->BindImageTexture(i, gbuffers[7], i + 3, GL_FALSE, 0, GL_READ_WRITE, GL_R32F);
-	gl->DispatchCompute(ceil(depthWidth / 2. / 8. / 8.), ceil(depthHeight / 2. / 8. / 8.), 1);
-	depthMipmapProgramPtr->release();
+	//depthMipmapProgramPtr->bind();
+	//for (int i = 0; i <= 3; i++)
+	//	gl->BindImageTexture(i, gbuffers[7], i, GL_FALSE, 0, GL_READ_WRITE, GL_R32F);
+	//gl->DispatchCompute(ceil(depthWidth / 2. / 8.), ceil(depthHeight / 2. / 8.), 1);
+	//for (int i = 0; i <= 3; i++)
+	//	gl->BindImageTexture(i, gbuffers[7], i + 3, GL_FALSE, 0, GL_READ_WRITE, GL_R32F);
+	//gl->DispatchCompute(ceil(depthWidth / 2. / 8. / 8.), ceil(depthHeight / 2. / 8. / 8.), 1);
+	//depthMipmapProgramPtr->release();
 
 	shadowMappingProgramPtr->bind();
 	shadowMappingProgramPtr->setUniformValue("view", view);
@@ -386,22 +415,15 @@ void RendererGLWidget::paintGL()
 	shadowMappingProgramPtr->setUniformValue("camPos", camera.Position);
 	shadowMappingProgramPtr->setUniformValue("mainLightDirection", light.lightDirection);
 	shadowMappingProgramPtr->setUniformValue("mainLightRadiance", mainLightRadiance);
-	/*gl->ActiveTexture(GL_TEXTURE0);
-	gl->BindTexture(GL_TEXTURE_2D, gbuffers[0]);*/
-	gl->ActiveTexture(GL_TEXTURE1);
-	gl->BindTexture(GL_TEXTURE_2D, gbuffers[1]);
-	gl->ActiveTexture(GL_TEXTURE2);
-	gl->BindTexture(GL_TEXTURE_2D, gbuffers[2]);
-	gl->ActiveTexture(GL_TEXTURE3);
-	gl->BindTexture(GL_TEXTURE_2D, gbuffers[3]);
-	gl->ActiveTexture(GL_TEXTURE4);
-	gl->BindTexture(GL_TEXTURE_2D_ARRAY, shadowGbuffer);
-	gl->ActiveTexture(GL_TEXTURE5);
-	gl->BindTexture(GL_TEXTURE_CUBE_MAP, irradianceMap);
-	gl->ActiveTexture(GL_TEXTURE6);
-	gl->BindTexture(GL_TEXTURE_CUBE_MAP, prefilterMap);
-	gl->ActiveTexture(GL_TEXTURE7);
-	gl->BindTexture(GL_TEXTURE_2D, brdfLUTTexture);
+
+	gl->BindTextureUnit(1, gbuffers[1]);
+	gl->BindTextureUnit(2, gbuffers[2]);
+	gl->BindTextureUnit(3, gbuffers[3]);
+	gl->BindTextureUnit(4, shadowGbuffer);
+	gl->BindTextureUnit(5, irradianceMap);
+	gl->BindTextureUnit(6, prefilterMap);
+	gl->BindTextureUnit(7, brdfLUTTexture);
+
 	gl->BindImageTexture(0, gbuffers[0], 0, GL_FALSE, 0, GL_READ_WRITE, GL_RGBA8);
 	gl->BindImageTexture(1, gbuffers[8], 0, GL_FALSE, 0, GL_READ_WRITE, GL_RGBA16F);
 	gl->DispatchCompute(ceil(frameWidth / 8.), ceil(frameHeight / 8.), 1);
@@ -433,11 +455,9 @@ void RendererGLWidget::paintGL()
 
 	gl->Viewport(0, 0, frameWidth, frameHeight);
 	gl->Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-	//QOpenGLVertexArrayObject::Binder vaoBinder(&quadVAO);
 	finalProgramPtr->bind();
 	finalProgramPtr->setUniformValue("exposure", exposure);
-	gl->ActiveTexture(GL_TEXTURE0);
-	gl->BindTexture(GL_TEXTURE_2D, gbuffers[0]);	
+	gl->BindTextureUnit(0, gbuffers[0]);
 	quadVAO.bind();
 	gl->DrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 	quadVAO.release();
@@ -446,30 +466,32 @@ void RendererGLWidget::paintGL()
 	skyBoxProgramPtr->bind();
 	gl->Disable(GL_CULL_FACE);
 	skyBoxProgramPtr->setUniformValue("view", view);
-	skyBoxProgramPtr->setUniformValue("projection", projection); 
+	skyBoxProgramPtr->setUniformValue("projection", projection);
 	skyBoxProgramPtr->setUniformValue("exposure", exposure);
-	gl->ActiveTexture(GL_TEXTURE0);
-	gl->BindTexture(GL_TEXTURE_CUBE_MAP, skyCubemap);
+	gl->BindTextureUnit(0, skyCubemap);
 	IblUtils::renderCube(glFunc);
 	skyBoxProgramPtr->release();
 
-	GLuint paintingCompDuration;
-	gl->GetQueryObjectuiv(paintingCompQuery, GL_QUERY_RESULT, &paintingCompDuration);
+	gl->EndQuery(GL_TIME_ELAPSED);
+	GLuint frameDuration;
+	gl->GetQueryObjectuiv(timeQuery, GL_QUERY_RESULT, &frameDuration);
 
 	clock_t currentFrame = std::clock();
 	deltaTime = (float)(currentFrame - lastFrame) / CLOCKS_PER_SEC;
 	lastFrame = currentFrame;
 
-	static float accTime = 0, frameCnt = 0;
+	static float accTime = 0, frameCnt = 0, averageDuration = 0;
 	accTime += deltaTime;
 	frameCnt++;
+	averageDuration += frameDuration;
 	if (accTime > 1.)
 	{
 		std::cout << std::format("{:20}\r", "");
-		std::cout << std::format("FPS: {:.2f} Painting: {}ms Pos: {},{},{}\r", frameCnt / accTime, paintingCompDuration / 1e6, camera.Position.x(), camera.Position.y(), camera.Position.z());
-		//std::cout << "FPS: " << frameCnt / accTime << " " << camera.Position.x() << " " << camera.Position.y() << " " << camera.Position.z() << "\r";
+		std::cout << std::format("FPS: {:.2f}({:.2f}ms) Page: {:}ms Pos: {:.2f},{:.2f},{:.2f}\r", frameCnt / accTime, averageDuration / 1e6 / frameCnt, vtManager->pageLoadDuration / 1e6, camera.Position.x(), camera.Position.y(), camera.Position.z());
+		vtManager->pageLoadDuration = 0;
 		accTime = 0;
 		frameCnt = 0;
+		averageDuration = 0;
 	}
 
 	if (pressedKeys.contains(Qt::Key_W)) {
@@ -534,7 +556,7 @@ void RendererGLWidget::resizeGL(int width, int height)
 		gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT3, GL_TEXTURE_2D, gbuffers[3], 0);
 		//gPaintingIndex
 		gl->BindTexture(GL_TEXTURE_2D, gbuffers[4]);
-		gl->TexImage2D(GL_TEXTURE_2D, 0, GL_R16UI, frameWidth, frameHeight, 0, GL_RED_INTEGER, GL_UNSIGNED_INT, NULL);
+		gl->TexImage2D(GL_TEXTURE_2D, 0, GL_RG16UI, frameWidth, frameHeight, 0, GL_RG_INTEGER, GL_UNSIGNED_INT, NULL);
 		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT4, GL_TEXTURE_2D, gbuffers[4], 0);
@@ -570,8 +592,8 @@ void RendererGLWidget::resizeGL(int width, int height)
 			gl->TexImage2D(GL_TEXTURE_2D, i, GL_R32F, depthWidth / pow(2, i), depthHeight / pow(2, i), 0, GL_RED, GL_FLOAT, NULL);
 		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
 		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 6);
-		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
-		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST_MIPMAP_NEAREST);
+		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
 		gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
 		gl->TexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, std::begin({ 1.0f, 1.0f, 1.0f, 1.0f }));

ArchitectureColoredPainting/src/Renderer/RendererGLWidget.h

@@ -15,6 +15,8 @@ struct GladGLContext;
 
 namespace Renderer
 {
+    class VirtualTextureManager;
+
     class RendererGLWidget : public QOpenGLWidget
     {
         Q_OBJECT
@@ -57,7 +59,7 @@ namespace Renderer
         QOpenGLShaderProgram* plainProgramPtr = nullptr;
         QOpenGLShaderProgram* modelProgramPtr = nullptr;
         QOpenGLShaderProgram* paintingProgramPtr = nullptr;
-        QOpenGLShaderProgram* paintingCompProgramPtr = nullptr;
+        QOpenGLShaderProgram* pageIdDownsampleProgramPtr = nullptr;
         QOpenGLShaderProgram* depthInitProgramPtr = nullptr;
         QOpenGLShaderProgram* depthMipmapProgramPtr = nullptr;
         QOpenGLShaderProgram* shadowMappingProgramPtr = nullptr;
@@ -77,5 +79,8 @@ namespace Renderer
         QOpenGLVertexArrayObject quadVAO;
         Model* model = nullptr;
         PaintingHelper* paintingHelper;
+        std::unique_ptr<VirtualTextureManager> vtManager;
+
+        GLuint timeQuery;
     };
 }

ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.cpp

@@ -1,7 +1,229 @@
-#include "VirtualTextureManager.h"
 #include <glad/gl.h>
+#include "VirtualTextureManager.h"
+#include <QOffscreenSurface>
+#include <array>
+#include <QDebug>
+#include <glm/gtc/integer.hpp>
+#define GLM_ENABLE_EXPERIMENTAL
+#include <glm/gtx/component_wise.hpp>
 
-Renderer::VirtualTextureManager::VirtualTextureManager(GladGLContext* gl)
-	:gl(gl)
+std::mutex pageIdBufferMutex;
+
+Renderer::VirtualTextureManager::VirtualTextureManager(GladGLContext* glMain)
+	:glMain(glMain)
 {
+	auto mainContext = QOpenGLContext::currentContext();
+	auto mainSurface = mainContext->surface();
+	surface.setFormat(mainContext->format());
+	surface.create();
+	mainContext->doneCurrent();
+
+	thread = std::jthread([&] {
+		QOpenGLContext context;
+		context.setFormat(mainContext->format());
+		context.setShareContext(mainContext);
+		context.create();
+		context.makeCurrent(&surface);
+
+		gl = std::make_unique<GladGLContext>();
+		if (!gladLoadGLContext(gl.get(), [](const char* name) { return (GLADapiproc)QOpenGLContext::currentContext()->getProcAddress(name); }))
+			qCritical() << "Failed to initialize GLAD";
+
+		GLint numPageSizes;
+
+		// Figure out how many page sizes are available for a 2D texture
+		gl->GetInternalformativ(GL_TEXTURE_2D, GL_RGBA8, GL_NUM_VIRTUAL_PAGE_SIZES_ARB, sizeof(GLint), &numPageSizes);
+		std::vector<GLint> pageSizesX(numPageSizes);
+		std::vector<GLint> pageSizesY(numPageSizes);
+		std::vector<GLint> pageSizesZ(numPageSizes);
+		gl->GetInternalformativ(GL_TEXTURE_2D, GL_RGBA8, GL_VIRTUAL_PAGE_SIZE_X_ARB, numPageSizes * sizeof(GLint), pageSizesX.data());
+		gl->GetInternalformativ(GL_TEXTURE_2D, GL_RGBA8, GL_VIRTUAL_PAGE_SIZE_Y_ARB, numPageSizes * sizeof(GLint), pageSizesY.data());
+		gl->GetInternalformativ(GL_TEXTURE_2D, GL_RGBA8, GL_VIRTUAL_PAGE_SIZE_Z_ARB, numPageSizes * sizeof(GLint), pageSizesZ.data());
+		qDebug() << "RGBA8" << numPageSizes;
+		for (int i = 0; i < numPageSizes; i++)
+			qDebug() << pageSizesX[i] << pageSizesY[i] << pageSizesZ[i];
+
+		gl->GetInternalformativ(GL_TEXTURE_2D, GL_RG8, GL_NUM_VIRTUAL_PAGE_SIZES_ARB, sizeof(GLint), &numPageSizes);
+		std::vector<GLint> pageSizesRG8X(numPageSizes);
+		std::vector<GLint> pageSizesRG8Y(numPageSizes);
+		std::vector<GLint> pageSizesRG8Z(numPageSizes);
+		gl->GetInternalformativ(GL_TEXTURE_2D, GL_RG8, GL_VIRTUAL_PAGE_SIZE_X_ARB, numPageSizes * sizeof(GLint), pageSizesRG8X.data());
+		gl->GetInternalformativ(GL_TEXTURE_2D, GL_RG8, GL_VIRTUAL_PAGE_SIZE_Y_ARB, numPageSizes * sizeof(GLint), pageSizesRG8Y.data());
+		gl->GetInternalformativ(GL_TEXTURE_2D, GL_RG8, GL_VIRTUAL_PAGE_SIZE_Z_ARB, numPageSizes * sizeof(GLint), pageSizesRG8Z.data());
+		qDebug() << "RG8" << numPageSizes;
+		for (int i = 0; i < numPageSizes; i++)
+			qDebug() << pageSizesRG8X[i] << pageSizesRG8Y[i] << pageSizesRG8Z[i];
+
+		pageSize = std::max(pageSizesRG8X[0], pageSizesRG8Y[0]);
+		qDebug() << "pageSize:" << pageSize;
+
+		if (!program.addShaderFromSourceFile(QOpenGLShader::Compute, ":/Shaders/painting.comp"))
+			qDebug() << "ERROR:" << program.log();
+		if (!program.link())
+			qDebug() << "ERROR:" << program.log();
+
+		initialized = true;
+
+		GLuint pageLoadTimeQuery;
+		gl->GenQueries(1, &pageLoadTimeQuery);
+
+		while (true)
+		{
+			if (needUpdate)
+			{
+				needUpdate = false;
+				auto& pageIds = pageIdsBuffer[currentBuffer];
+				pageIdBufferMutex.lock();
+				currentBuffer = 1 - currentBuffer;
+				pageIdBufferMutex.unlock();
+	
+				gl->BeginQuery(GL_TIME_ELAPSED, pageLoadTimeQuery);
+				updatePages(pageIds);
+				gl->EndQuery(GL_TIME_ELAPSED);
+				GLuint duration;
+				gl->GetQueryObjectuiv(pageLoadTimeQuery, GL_QUERY_RESULT, &duration);
+				//qDebug() << duration;
+				pageLoadDuration += duration;
+			}
+		}
+	});
+
+	while (!initialized)
+		std::this_thread::yield();
+
+	mainContext->makeCurrent(mainSurface);
+
+}
+
+std::uint16_t Renderer::VirtualTextureManager::createVirtualTexture(Painting painting)
+{
+	const GLsizei levels = glm::log2(textureSize / pageSize) + 1;
+	qDebug() << "levels:" << levels;
+
+	GLuint textures[2];
+	glMain->CreateTextures(GL_TEXTURE_2D, 2, textures);
+	GLuint& baseColor = textures[0];
+	GLuint& metallicRoughness = textures[1];
+
+	glMain->TextureParameteri(baseColor, GL_TEXTURE_SPARSE_ARB, GL_TRUE);
+	glMain->TextureParameteri(baseColor, GL_TEXTURE_BASE_LEVEL, 0);
+	glMain->TextureParameteri(baseColor, GL_TEXTURE_MAX_LEVEL, levels - 1);
+	glMain->TextureParameteri(baseColor, GL_TEXTURE_WRAP_S, GL_REPEAT);
+	glMain->TextureParameteri(baseColor, GL_TEXTURE_WRAP_T, GL_REPEAT);
+	glMain->TextureParameteri(baseColor, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
+	glMain->TextureParameteri(baseColor, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	glMain->TextureStorage2D(baseColor, levels, GL_RGBA8, GLsizei(textureSize), GLsizei(textureSize));
+
+	glMain->TextureParameteri(metallicRoughness, GL_TEXTURE_SPARSE_ARB, GL_TRUE);
+	glMain->TextureParameteri(metallicRoughness, GL_TEXTURE_BASE_LEVEL, 0);
+	glMain->TextureParameteri(metallicRoughness, GL_TEXTURE_MAX_LEVEL, levels - 1);
+	glMain->TextureParameteri(metallicRoughness, GL_TEXTURE_WRAP_S, GL_REPEAT);
+	glMain->TextureParameteri(metallicRoughness, GL_TEXTURE_WRAP_T, GL_REPEAT);
+	glMain->TextureParameteri(metallicRoughness, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
+	glMain->TextureParameteri(metallicRoughness, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	glMain->TextureStorage2D(metallicRoughness, levels, GL_RG8, GLsizei(textureSize), GLsizei(textureSize));
+
+	for (int i = 0; i < 5; i++)
+		glMain->BindBufferBase(GL_SHADER_STORAGE_BUFFER, i, painting.buffers[i]);
+
+	for (auto level = levels - 1; level < levels; ++level)
+	{
+		GLsizei levelSize = (textureSize >> level);
+		for (GLsizei j = 0; j < levelSize / pageSize; ++j)
+			for (GLsizei i = 0; i < levelSize / pageSize; ++i)
+			{
+				glMain->TexturePageCommitmentEXT(baseColor, static_cast<GLint>(level),
+					static_cast<GLsizei>(pageSize) * i, static_cast<GLsizei>(pageSize) * j, 0,
+					static_cast<GLsizei>(pageSize), static_cast<GLsizei>(pageSize), 1,
+					GL_TRUE);
+				glMain->TexturePageCommitmentEXT(metallicRoughness, static_cast<GLint>(level),
+					static_cast<GLsizei>(pageSize) * i, static_cast<GLsizei>(pageSize) * j, 0,
+					static_cast<GLsizei>(pageSize), static_cast<GLsizei>(pageSize), 1,
+					GL_TRUE);
+
+				program.bind();
+				glMain->Uniform2i(gl->GetUniformLocation(program.programId(), "pixelOffset"), static_cast<GLsizei>(pageSize) * i, static_cast<GLsizei>(pageSize) * j);
+				glMain->BindImageTexture(0, baseColor, level, GL_FALSE, 0, GL_READ_WRITE, GL_RGBA8);
+				glMain->BindImageTexture(1, metallicRoughness, level, GL_FALSE, 0, GL_READ_WRITE, GL_RG8);
+				glMain->DispatchCompute(pageSize / 8, pageSize / 8, 1);
+				program.release();
+
+			}
+	}
+	paintings.emplace_back(baseColor, metallicRoughness, painting.buffers);
+	return paintings.size();
+}
+
+Renderer::PaintingHandle& Renderer::VirtualTextureManager::getPaintingHandle(std::uint16_t id)
+{
+	return paintings[id - 1];
+}
+
+void Renderer::VirtualTextureManager::tryUpdatePages(const std::vector<glm::u16vec2>& pageIds)
+{
+	pageIdBufferMutex.lock();
+	pageIdsBuffer[currentBuffer] = pageIds;
+	pageIdBufferMutex.unlock();
+	needUpdate = true;
+}
+
+void Renderer::VirtualTextureManager::pageCommitmentById(const glm::u16vec2& pageId, GLboolean commit)
+{
+	auto& painting = getPaintingHandle(pageId.x >> 4);
+	GLint level = pageId.x & 0b1111;
+	glm::ivec2 page(pageId.y & 0b11111111, pageId.y >> 8);
+	//qDebug() << commit << level << page.x << page.y;
+	commitMutex.lock();
+
+	gl->TexturePageCommitmentEXT(painting.baseColor, level,
+		static_cast<GLsizei>(pageSize) * page.x, static_cast<GLsizei>(pageSize) * page.y, 0,
+		static_cast<GLsizei>(pageSize), static_cast<GLsizei>(pageSize), 1,
+		commit);
+	gl->TexturePageCommitmentEXT(painting.metallicRoughness, level,
+		static_cast<GLsizei>(pageSize) * page.x, static_cast<GLsizei>(pageSize) * page.y, 0,
+		static_cast<GLsizei>(pageSize), static_cast<GLsizei>(pageSize), 1,
+		commit);
+
+	if (commit)
+	{
+		program.bind();
+		for (int i = 0; i < 5; i++)
+			gl->BindBufferBase(GL_SHADER_STORAGE_BUFFER, i, painting.buffers[i]);
+		gl->Uniform2i(gl->GetUniformLocation(program.programId(), "pixelOffset"), static_cast<GLsizei>(pageSize) * page.x, static_cast<GLsizei>(pageSize) * page.y);
+		gl->BindImageTexture(0, painting.baseColor, level, GL_FALSE, 0, GL_READ_WRITE, GL_RGBA8);
+		gl->BindImageTexture(1, painting.metallicRoughness, level, GL_FALSE, 0, GL_READ_WRITE, GL_RG8);
+		gl->DispatchCompute(pageSize / 8, pageSize / 8, 1);
+		program.release();
+	}
+	gl->Finish();
+	commitMutex.unlock();
+}
+
+void Renderer::VirtualTextureManager::updatePages(const std::vector<glm::u16vec2>& pageIds)
+{
+	for (auto iter = loadedPages.begin(); iter != loadedPages.end();)
+	{
+		iter->second--;
+		if (iter->second == 0)
+		{
+			pageCommitmentById(iter->first, GL_FALSE);
+			iter = loadedPages.erase(iter);
+		}
+		else
+			iter++;
+	}
+	for (auto& pageId : pageIds)
+	{
+		if (pageId.x)
+		{
+			auto [iter, success] = loadedPages.emplace(pageId, lifeTime);
+			if (success)
+			{
+				pageCommitmentById(pageId, GL_TRUE);
+			}
+			else
+				iter->second = lifeTime;
+		}
+	}
+
 }

ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.h

@@ -1,17 +1,65 @@
 #pragma once
-
+#include "Painting/Painting.h"
+#include <QOpenGLShaderProgram>
+#include <unordered_map>
+#include <thread>
+#include <atomic>
+#include <mutex>
+#include <QOffscreenSurface>
 
 struct GladGLContext;
 
 namespace Renderer
 {
+	struct PaintingHandle
+	{
+		GLuint baseColor;
+		GLuint metallicRoughness;
+		std::array<GLuint, 5> buffers;
+	};
+
 	class VirtualTextureManager
 	{
 	public:
-		VirtualTextureManager(GladGLContext* gl);
+		VirtualTextureManager(GladGLContext* glMain);
 
+		/**
+		 * @brief
+		 * @param painting
+		 * @return ÐéÄâÎÆÀíid
+		 */
+		std::uint16_t createVirtualTexture(Painting painting);
+		PaintingHandle& getPaintingHandle(std::uint16_t id);
+		void tryUpdatePages(const std::vector<glm::u16vec2>& pageIds);
+
+		std::atomic<bool> initialized = false;
+		std::atomic<bool> needUpdate = false;
+		std::atomic<GLuint> pageLoadDuration = 0;
+		std::mutex commitMutex;
 	private:
-		GladGLContext* gl;
+		std::jthread thread;
+		QOffscreenSurface surface;
+		std::unique_ptr<GladGLContext> gl;
+		GladGLContext* glMain;
+		static constexpr GLsizei textureSize = 16384;
+		static constexpr int lifeTime = 64;
+		GLint pageSize;
+		QOpenGLShaderProgram program;
+		std::vector<PaintingHandle> paintings;
+
+		struct u16vec2Hash
+		{
+			std::size_t operator()(glm::u16vec2 const& v) const
+			{
+				return ((std::size_t)v.y << 16) + v.x;
+			}
+		};
+		std::unordered_map<glm::u16vec2, int, u16vec2Hash> loadedPages;
+		std::vector<glm::u16vec2> pageIdsBuffer[2];
+		int currentBuffer = 0;
+
+		void updatePages(const std::vector<glm::u16vec2>& pageIds);
+		void pageCommitmentById(const glm::u16vec2& pageId, GLboolean commit);
 	};
 }
 

ArchitectureColoredPainting/src/main.cpp

@@ -27,12 +27,11 @@ void messageHandler(QtMsgType type, const QMessageLogContext& context, const QSt
 		SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | FOREGROUND_RED | FOREGROUND_GREEN);
 		break;
 	case QtCriticalMsg:
-		SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | FOREGROUND_RED | FOREGROUND_BLUE);
-		break;
-	case QtFatalMsg:
 		SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | FOREGROUND_RED);
 		break;
-
+	case QtFatalMsg:
+		SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | BACKGROUND_RED);
+		break;
 	}
 	std::cout << std::format("{}({},{}) {}\n",
 		QString(context.file).splitRef("\\").back().toLocal8Bit().data(),

UnitTest/ElementRendererTest.cpp

@@ -3,7 +3,7 @@
 #include <QtWidgets/QApplication>
 #include "ElementRendererTest.h"
 #include "Renderer/Painting/ElementStyle.h"
-#include <util/SvgFileLoader.h>
+
 
 using namespace Microsoft::VisualStudio::CppUnitTestFramework;
 using namespace Renderer;
@@ -15,8 +15,6 @@ namespace UnitTest
 	public:
 		TEST_METHOD(TestBothSidesRound)
 		{
-			Logger::WriteMessage("In Class1");
-			Assert::AreEqual(1 ,2);
 			QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
 			QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
 			QApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);