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graphics: create depth images for comparison textures

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This commit is contained in:
nmzik
2026-09-04 00:54:59 +02:00
parent d762d24f73
commit 0ce19357f6
3 changed files with 130 additions and 5 deletions
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src/graphics/host_gpu/renderer/pipeline/descriptors.cpp
+17 -3
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@@ -512,6 +512,20 @@ struct NullImageSpec {
Prospero::BufferFormat guest_format;
};
static vk::Format TextureBackingFormat(const ShaderRecompiler::IR::ImageResource& resource,
Prospero::BufferFormat guest_format,
vk::Format view_format) {
if (!resource.depth_compare) {
return view_format;
}
const auto* policy = FindGuestDepthFormatPolicy(guest_format);
if (!IsSupportedSampledDepthResource(resource) || policy == nullptr) {
EXIT("unsupported comparison-sampled texture: format=%u\n",
static_cast<uint32_t>(guest_format));
}
return policy->depth_attachment_format;
}
static NullImageSpec NullTextureSpec(const ShaderRecompiler::IR::ImageResource& resource) {
switch (resource.numeric_class) {
case Prospero::TextureNumericClass::Float:
@@ -529,7 +543,7 @@ static TextureCache::ImageDesc NullTextureDesc(const ShaderRecompiler::IR::Image
TextureCache::BindingType binding) {
const auto spec = NullTextureSpec(resource);
TextureCache::ImageDesc desc {};
desc.info.pixel_format = spec.format;
desc.info.pixel_format = TextureBackingFormat(resource, spec.guest_format, spec.format);
desc.info.guest_format = spec.guest_format;
desc.info.type = Prospero::ImageType::kColor2D;
desc.info.extent = {1, 1, 1};
@@ -537,7 +551,7 @@ static TextureCache::ImageDesc NullTextureDesc(const ShaderRecompiler::IR::Image
desc.info.bytes_per_block = 4;
desc.info.samples = 1;
desc.info.mip_layout[0] = {0, 0, 1, 1};
desc.view_info.format = desc.info.pixel_format;
desc.view_info.format = spec.format;
desc.view_info.type = vk::ImageViewType::e2D;
desc.view_info.aspect = vk::ImageAspectFlagBits::eColor;
desc.view_info.usage = binding == TextureCache::BindingType::Storage
@@ -753,7 +767,7 @@ TextureBinding RenderExecutor::ResolveTexture(const ShaderRecompiler::IR::ImageR
const auto block_bytes = Prospero::BlockCompressedBytesPerBlock(format);
TextureCache::ImageDesc desc {};
desc.info.data = {address, size.size};
desc.info.pixel_format = pixel_format;
desc.info.pixel_format = TextureBackingFormat(resource, format, pixel_format);
desc.info.guest_format = format;
desc.info.type = TextureBaseType(type);
desc.info.extent = {width, height, volume ? depth : 1u};