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PixelShaderManager: Reduce number of redundant shader constant updates

This commit is contained in:
NeoBrainX 2012-09-02 19:14:43 +02:00
parent 0fdeb81038
commit 9f1582843d
1 changed files with 28 additions and 1 deletions
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29
Source/Core/VideoCommon/Src/PixelShaderManager.cpp
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@ -42,19 +42,45 @@ static u32 lastTexDims[8]; // width | height << 16 | wrap_s << 28 | wrap_t << 30
static u32 lastZBias; static u32 lastZBias;
static int nMaterialsChanged; static int nMaterialsChanged;
static float s_constant_cache[C_PENVCONST_END*4];
inline void SetPSConstant4f(unsigned int const_number, float f1, float f2, float f3, float f4) inline void SetPSConstant4f(unsigned int const_number, float f1, float f2, float f3, float f4)
{ {
if (s_constant_cache[const_number*4] == f1 && s_constant_cache[const_number*4+1] == f2 &&
s_constant_cache[const_number*4+2] == f3 && s_constant_cache[const_number*4+3] == f4)
return;
g_renderer->SetPSConstant4f(const_number, f1, f2, f3, f4); g_renderer->SetPSConstant4f(const_number, f1, f2, f3, f4);
s_constant_cache[const_number*4] = f1;
s_constant_cache[const_number*4+1] = f2;
s_constant_cache[const_number*4+2] = f3;
s_constant_cache[const_number*4+3] = f4;
} }
inline void SetPSConstant4fv(unsigned int const_number, const float *f) inline void SetPSConstant4fv(unsigned int const_number, const float *f)
{ {
if (s_constant_cache[const_number*4] == f[0] && s_constant_cache[const_number*4+1] == f[1] &&
s_constant_cache[const_number*4+2] == f[2] && s_constant_cache[const_number*4+3] == f[3])
return;
g_renderer->SetPSConstant4fv(const_number, f); g_renderer->SetPSConstant4fv(const_number, f);
s_constant_cache[const_number*4] = f[0];
s_constant_cache[const_number*4+1] = f[1];
s_constant_cache[const_number*4+2] = f[2];
s_constant_cache[const_number*4+3] == f[3];
} }
inline void SetMultiPSConstant4fv(unsigned int const_number, unsigned int count, const float *f) inline void SetMultiPSConstant4fv(unsigned int const_number, unsigned int count, const float *f)
{ {
for (unsigned int i = 0; i < 4*count; ++i)
if (s_constant_cache[const_number*4+i] != f[i])
break;
else if (i == 4*count-1)
return;
g_renderer->SetMultiPSConstant4fv(const_number, count, f); g_renderer->SetMultiPSConstant4fv(const_number, count, f);
for (unsigned int i = 0; i < 4*count; ++i)
s_constant_cache[const_number*4+i] = f[i];
} }
void PixelShaderManager::Init() void PixelShaderManager::Init()
@ -63,6 +89,7 @@ void PixelShaderManager::Init()
memset(lastTexDims, 0, sizeof(lastTexDims)); memset(lastTexDims, 0, sizeof(lastTexDims));
lastZBias = 0; lastZBias = 0;
memset(lastRGBAfull, 0, sizeof(lastRGBAfull)); memset(lastRGBAfull, 0, sizeof(lastRGBAfull));
memset(s_constant_cache, 0, sizeof(s_constant_cache)); // TODO: Should reflect that on the GPU side....
Dirty(); Dirty();
} }
@ -95,7 +122,7 @@ void PixelShaderManager::SetConstants(u32 components)
#define IncStuff() { \ #define IncStuff() { \
saved_updates++; \ saved_updates++; \
printf("Saved a constant update at line %d! Saved %d against %d now!\n", __LINE__, saved_updates, necessary_updates); } /*printf("Saved a constant update at line %d! Saved %d against %d now!\n", __LINE__, saved_updates, necessary_updates);*/ }
for (int i = 0; i < 2; ++i) for (int i = 0; i < 2; ++i)
{ {