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Make zfreeze use screenspace coordinates independant of IR.

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OpenGL requires the y coordinates to be flipped.

Also refactored PixelGen code to remove duplicate code.
This commit is contained in:
Scott Mansell
2015-01-03 06:06:56 +13:00
parent 418296961c
commit 88c7afd315
8 changed files with 57 additions and 17 deletions
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43
Source/Core/VideoCommon/PixelShaderGen.cpp
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@ -144,6 +144,7 @@ template<class T> static inline void WriteTevRegular(T& out, const char* compone
template<class T> static inline void SampleTexture(T& out, const char *texcoords, const char *texswap, int texmap, API_TYPE ApiType);
template<class T> static inline void WriteAlphaTest(T& out, pixel_shader_uid_data* uid_data, API_TYPE ApiType,DSTALPHA_MODE dstAlphaMode, bool per_pixel_depth);
template<class T> static inline void WriteFog(T& out, pixel_shader_uid_data* uid_data);
template<class T> static inline void WritePerPixelDepth(T& out, pixel_shader_uid_data* uid_data, API_TYPE ApiType);
template<class T>
static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u32 components)
@ -229,6 +230,7 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
"\tint4 " I_FOGI";\n"
"\tfloat4 " I_FOGF"[2];\n"
"\tfloat4 " I_ZSLOPE";\n"
"\tfloat4 " I_EFBSCALE";\n"
"};\n");
if (g_ActiveConfig.bEnablePixelLighting)
@ -544,14 +546,7 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
// Note: z-textures are not written to depth buffer if early depth test is used
if (per_pixel_depth && bpmem.UseEarlyDepthTest())
{
if (bpmem.genMode.zfreeze)
{
out.Write("\tdepth = float(" I_ZSLOPE".z + " I_ZSLOPE".x * rawpos.x + " I_ZSLOPE".y * rawpos.y) / float(0xffffff);\n");
}
else
{
out.Write("\tdepth = float(zCoord) / float(0xFFFFFF);\n");
}
WritePerPixelDepth<T>(out, uid_data, ApiType);
}
// Note: depth texture output is only written to depth buffer if late depth test is used
@ -567,14 +562,7 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
if (per_pixel_depth && bpmem.UseLateDepthTest())
{
if (bpmem.genMode.zfreeze)
{
out.Write("\tdepth = float(" I_ZSLOPE".z + " I_ZSLOPE".x * rawpos.x + " I_ZSLOPE".y * rawpos.y) / float(0xffffff);\n");
}
else
{
out.Write("\tdepth = float(zCoord) / float(0xFFFFFF);\n");
}
WritePerPixelDepth<T>(out, uid_data, ApiType);
}
if (dstAlphaMode == DSTALPHA_ALPHA_PASS)
@ -1115,6 +1103,29 @@ static inline void WriteFog(T& out, pixel_shader_uid_data* uid_data)
out.Write("\tprev.rgb = (prev.rgb * (256 - ifog) + " I_FOGCOLOR".rgb * ifog) >> 8;\n");
}
template<class T>
static inline void WritePerPixelDepth(T& out, pixel_shader_uid_data* uid_data, API_TYPE ApiType)
{
if (bpmem.genMode.zfreeze)
{
out.SetConstantsUsed(C_ZSLOPE, C_ZSLOPE);
out.SetConstantsUsed(C_EFBSCALE, C_EFBSCALE);
out.Write("\tfloat2 screenpos = rawpos.xy * " I_EFBSCALE".xy;\n");
// Opengl has reversed vertical screenspace coordiantes
if(ApiType == API_OPENGL)
out.Write("\tscreenpos.y = %i - screenpos.y - 1;\n", EFB_HEIGHT);
out.Write("\tdepth = float(" I_ZSLOPE".z + " I_ZSLOPE".x * screenpos.x + " I_ZSLOPE".y * screenpos.y) / float(0xffffff);\n");
}
else
{
out.Write("\tdepth = float(zCoord) / float(0xFFFFFF);\n");
}
}
void GetPixelShaderUid(PixelShaderUid& object, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u32 components)
{
GeneratePixelShader<PixelShaderUid>(object, dstAlphaMode, ApiType, components);