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[GPU] More exact PWL texture/RT gamma conversion

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Triang3l
2022-06-07 21:26:34 +03:00
parent 55a91afcc7
commit 56f72da137
6 changed files with 238 additions and 77 deletions
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26
src/xenia/gpu/dxbc_shader_translator.h
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@@ -664,15 +664,23 @@ class DxbcShaderTranslator : public ShaderTranslator {
// Frees the last allocated internal r# registers for later reuse.
void PopSystemTemp(uint32_t count = 1);
// Converts one scalar to or from PWL gamma, using 1 temporary scalar.
// The target may be the same as any of the source, the piece temporary or the
// accumulator, but not two or three of these.
// The piece and the accumulator can't be the same as source or as each other.
void ConvertPWLGamma(bool to_gamma, int32_t source_temp,
uint32_t source_temp_component, uint32_t target_temp,
uint32_t target_temp_component, uint32_t piece_temp,
uint32_t piece_temp_component, uint32_t accumulator_temp,
uint32_t accumulator_temp_component);
// Converts one scalar from piecewise linear gamma to linear. The target may
// be the same as the source, the temporary variables must be different. If
// the source is not pre-saturated, saturation will be done internally.
void PWLGammaToLinear(uint32_t target_temp, uint32_t target_temp_component,
uint32_t source_temp, uint32_t source_temp_component,
bool source_pre_saturated, uint32_t temp1,
uint32_t temp1_component, uint32_t temp2,
uint32_t temp2_component);
// Converts one scalar, which must be saturated before calling this function,
// from linear to piecewise linear gamma. The target may be the same as either
// the source or as temp_or_target, but not as both (and temp_or_target may
// not be the same as the source). temp_non_target must be different.
void PreSaturatedLinearToPWLGamma(
uint32_t target_temp, uint32_t target_temp_component,
uint32_t source_temp, uint32_t source_temp_component,
uint32_t temp_or_target, uint32_t temp_or_target_component,
uint32_t temp_non_target, uint32_t temp_non_target_component);
bool IsSampleRate() const {
assert_true(is_pixel_shader());