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Shading rate pattern and colorization

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This commit is contained in:
Sascha Willems 2020-09-05 14:10:02 +02:00
parent 8d896cd04b
commit ccadcdd238
2 changed files with 40 additions and 14 deletions
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29
data/shaders/glsl/variablerateshading/scene.frag
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@ -53,13 +53,32 @@ void main()
if (uboScene.colorShadingRates == 1) { if (uboScene.colorShadingRates == 1) {
if (gl_FragmentSizeNV.x == 1 && gl_FragmentSizeNV.y == 1) { if (gl_FragmentSizeNV.x == 1 && gl_FragmentSizeNV.y == 1) {
outFragColor.rgb *= vec3(0.5, 1.0, 0.5); outFragColor.rgb *= vec3(0.0, 0.8, 0.4);
return;
} }
if (gl_FragmentSizeNV.x == 2 || gl_FragmentSizeNV.y == 2) { if (gl_FragmentSizeNV.x == 2 && gl_FragmentSizeNV.y == 1) {
outFragColor.rgb *= vec3(1.0, 1.0, 0.5); outFragColor.rgb *= vec3(0.2, 0.6, 1.0);
return;
} }
if (gl_FragmentSizeNV.x == 4 || gl_FragmentSizeNV.y == 4) { if (gl_FragmentSizeNV.x == 1 && gl_FragmentSizeNV.y == 2) {
outFragColor.rgb *= vec3(1.0, 0.5, 0.5); outFragColor.rgb *= vec3(0.0, 0.4, 0.8);
return;
}
if (gl_FragmentSizeNV.x == 2 && gl_FragmentSizeNV.y == 2) {
outFragColor.rgb *= vec3(1.0, 1.0, 0.2);
return;
}
if (gl_FragmentSizeNV.x == 4 && gl_FragmentSizeNV.y == 2) {
outFragColor.rgb *= vec3(0.8, 0.8, 0.0);
return;
}
if (gl_FragmentSizeNV.x == 2 && gl_FragmentSizeNV.y == 4) {
outFragColor.rgb *= vec3(1.0, 0.4, 0.2);
return;
}
if (gl_FragmentSizeNV.x == 4 && gl_FragmentSizeNV.y == 4) {
outFragColor.rgb *= vec3(0.8, 0.0, 0.0);
return;
} }
} }
} }

25
examples/variablerateshading/variablerateshading.cpp
View file

@ -171,24 +171,31 @@ void VulkanExample::prepareShadingRateImage()
imageViewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; imageViewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
VK_CHECK_RESULT(vkCreateImageView(device, &imageViewCI, nullptr, &shadingRateImage.view)); VK_CHECK_RESULT(vkCreateImageView(device, &imageViewCI, nullptr, &shadingRateImage.view));
// Populate with shading rate pattern // Populate with lowest possible shading rate pattern
uint8_t val = VK_SHADING_RATE_PALETTE_ENTRY_NO_INVOCATIONS_NV; uint8_t val = VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_4X4_PIXELS_NV;
uint8_t* shadingRatePatternData = new uint8_t[bufferSize]; uint8_t* shadingRatePatternData = new uint8_t[bufferSize];
memset(shadingRatePatternData, val, bufferSize); memset(shadingRatePatternData, val, bufferSize);
// Create a circular pattern with decreasing sampling rates outwards (max. range, pattern)
std::map<float, VkShadingRatePaletteEntryNV> patternLookup = {
{ 8.0f, VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_PIXEL_NV },
{ 12.0f, VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_2X1_PIXELS_NV },
{ 16.0f, VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_1X2_PIXELS_NV },
{ 18.0f, VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_2X2_PIXELS_NV },
{ 20.0f, VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_4X2_PIXELS_NV },
{ 24.0f, VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_2X4_PIXELS_NV }
};
uint8_t* ptrData = shadingRatePatternData; uint8_t* ptrData = shadingRatePatternData;
for (uint32_t y = 0; y < imageExtent.height; y++) { for (uint32_t y = 0; y < imageExtent.height; y++) {
for (uint32_t x = 0; x < imageExtent.width; x++) { for (uint32_t x = 0; x < imageExtent.width; x++) {
const float deltaX = (float)imageExtent.width / 2.0f - (float)x; const float deltaX = (float)imageExtent.width / 2.0f - (float)x;
const float deltaY = (float)imageExtent.height / 2.0f - (float)y; const float deltaY = (float)imageExtent.height / 2.0f - (float)y;
const float dist = std::sqrt(deltaX * deltaX + deltaY * deltaY); const float dist = std::sqrt(deltaX * deltaX + deltaY * deltaY);
if (dist <= 8.0f) { for (auto pattern : patternLookup) {
*ptrData = VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_PIXEL_NV; if (dist <= pattern.first) {
} else { *ptrData = pattern.second;
if (dist <= 16.0f) { break;
*ptrData = VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_2X2_PIXELS_NV;
} else {
*ptrData = VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_4X4_PIXELS_NV;
} }
} }
ptrData++; ptrData++;