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GPU: Prefer scaling depth to 16-bit if using 24.

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In most cases, this will be a lot faster than pixel depth rounding, and
may avoid more issues in vertex rounding.
This commit is contained in:
Unknown W. Brackets 2022-11-07 20:05:51 -08:00
parent 3333f2a5aa
commit 855d16ffb3
3 changed files with 23 additions and 16 deletions
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3
GPU/D3D11/GPU_D3D11.cpp
View file

@ -125,8 +125,7 @@ u32 GPU_D3D11::CheckGPUFeatures() const {
if (!g_Config.bHighQualityDepth && (features & GPU_USE_ACCURATE_DEPTH) != 0) {
features |= GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT;
} else if (PSP_CoreParameter().compat.flags().PixelDepthRounding) {
// Use fragment rounding on desktop and GLES3, most accurate.
features |= GPU_ROUND_FRAGMENT_DEPTH_TO_16BIT;
features |= GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT;
} else if (PSP_CoreParameter().compat.flags().VertexDepthRounding) {
features |= GPU_ROUND_DEPTH_TO_16BIT;
}

11
GPU/GLES/GPU_GLES.cpp
View file

@ -181,17 +181,18 @@ u32 GPU_GLES::CheckGPUFeatures() const {
// If we already have a 16-bit depth buffer, we don't need to round.
bool prefer24 = draw_->GetDeviceCaps().preferredDepthBufferFormat == Draw::DataFormat::D24_S8;
if (prefer24) {
bool prefer16 = draw_->GetDeviceCaps().preferredDepthBufferFormat == Draw::DataFormat::D16;
if (!prefer16) {
if (!g_Config.bHighQualityDepth && (features & GPU_USE_ACCURATE_DEPTH) != 0) {
features |= GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT;
} else if (PSP_CoreParameter().compat.flags().PixelDepthRounding) {
if (!gl_extensions.IsGLES || gl_extensions.GLES3) {
// Use fragment rounding on desktop and GLES3, most accurate.
features |= GPU_ROUND_FRAGMENT_DEPTH_TO_16BIT;
} else if (prefer24 && (features & GPU_USE_ACCURATE_DEPTH) != 0) {
if (prefer24 && (features & GPU_USE_ACCURATE_DEPTH) != 0) {
// Here we can simulate a 16 bit depth buffer by scaling.
// Note that the depth buffer is fixed point, not floating, so dividing by 256 is pretty good.
features |= GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT;
} else if (!gl_extensions.IsGLES || gl_extensions.GLES3) {
// Use fragment rounding on desktop and GLES3, most accurate.
features |= GPU_ROUND_FRAGMENT_DEPTH_TO_16BIT;
} else {
// At least do vertex rounding if nothing else.
features |= GPU_ROUND_DEPTH_TO_16BIT;

25
GPU/Vulkan/GPU_Vulkan.cpp
View file

@ -257,15 +257,22 @@ u32 GPU_Vulkan::CheckGPUFeatures() const {
INFO_LOG(G3D, "Deficient texture format support: 4444: %d 1555: %d 565: %d", fmt4444, fmt1555, fmt565);
}
if (!g_Config.bHighQualityDepth && (features & GPU_USE_ACCURATE_DEPTH) != 0) {
features |= GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT;
}
else if (PSP_CoreParameter().compat.flags().PixelDepthRounding) {
// Use fragment rounding on desktop and GLES3, most accurate.
features |= GPU_ROUND_FRAGMENT_DEPTH_TO_16BIT;
}
else if (PSP_CoreParameter().compat.flags().VertexDepthRounding) {
features |= GPU_ROUND_DEPTH_TO_16BIT;
bool prefer24 = draw_->GetDeviceCaps().preferredDepthBufferFormat == Draw::DataFormat::D24_S8;
bool prefer16 = draw_->GetDeviceCaps().preferredDepthBufferFormat == Draw::DataFormat::D16;
if (!prefer16) {
if (!g_Config.bHighQualityDepth && (features & GPU_USE_ACCURATE_DEPTH) != 0) {
features |= GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT;
} else if (PSP_CoreParameter().compat.flags().PixelDepthRounding) {
if (prefer24 && (features & GPU_USE_ACCURATE_DEPTH) != 0) {
// Here we can simulate a 16 bit depth buffer by scaling.
// Note that the depth buffer is fixed point, not floating, so dividing by 256 is pretty good.
features |= GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT;
} else {
features |= GPU_ROUND_FRAGMENT_DEPTH_TO_16BIT;
}
} else if (PSP_CoreParameter().compat.flags().VertexDepthRounding) {
features |= GPU_ROUND_DEPTH_TO_16BIT;
}
}
if (g_Config.bStereoRendering && draw_->GetDeviceCaps().multiViewSupported) {