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[D3D12] DXBC samplers

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This commit is contained in:
Triang3l
2018-09-11 12:37:47 +03:00
parent 06fabd16ad
commit d4334312f3
8 changed files with 188 additions and 65 deletions
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22
src/xenia/gpu/dxbc_shader_translator.h
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@@ -62,6 +62,11 @@ class DxbcShaderTranslator : public ShaderTranslator {
uint32_t color_output_map[4];
};
// 96 textures at most because there are 32 fetch constants, and textures can
// be 2D array, 3D or cube.
static constexpr uint32_t kMaxTextureSRVIndexBits = 7;
static constexpr uint32_t kMaxTextureSRVs =
(1 << kMaxTextureSRVIndexBits) - 1;
struct TextureSRV {
uint32_t fetch_constant;
TextureDimension dimension;
@@ -73,6 +78,17 @@ class DxbcShaderTranslator : public ShaderTranslator {
return texture_srvs_.data();
}
// Arbitrary limit - there can't be more than 2048 in a shader-visible
// descriptor heap, though some older hardware (tier 1 resource binding -
// Nvidia Fermi) doesn't support more than 16 samplers bound at once (we can't
// really do anything if a game uses more than 16), but just to have some
// limit so sampler count can easily be packed into 32-bit map keys (for
// instance, for root signatures). But shaders can specify overrides for
// filtering modes, and the number of possible combinations is huge - let's
// limit it to something sane.
static constexpr uint32_t kMaxSamplerBindingIndexBits = 7;
static constexpr uint32_t kMaxSamplerBindings =
(1 << kMaxSamplerBindingIndexBits) - 1;
struct SamplerBinding {
uint32_t fetch_constant;
TextureFilter mag_filter;
@@ -341,6 +357,12 @@ class DxbcShaderTranslator : public ShaderTranslator {
// Returns T#/t# index (they are the same in this translator).
uint32_t FindOrAddTextureSRV(uint32_t fetch_constant,
TextureDimension dimension);
// Returns S#/s# index (they are the same in this translator).
uint32_t FindOrAddSamplerBinding(uint32_t fetch_constant,
TextureFilter mag_filter,
TextureFilter min_filter,
TextureFilter mip_filter,
AnisoFilter aniso_filter);
void ProcessVectorAluInstruction(const ParsedAluInstruction& instr);
void ProcessScalarAluInstruction(const ParsedAluInstruction& instr);