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gsdx mipmap:ogl: extend shader to support trilinear filtering

This commit is contained in:
Gregory Hainaut 2016-10-06 20:15:50 +02:00
parent d185a85a07
commit 7ea0e90678
4 changed files with 43 additions and 1 deletions
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2
plugins/GSdx/GSDeviceOGL.cpp
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@ -954,6 +954,8 @@ GLuint GSDeviceOGL::CompilePS(PSSelector sel)
+ format("#define PS_CLR1 %d\n", sel.clr1)
+ format("#define PS_FBA %d\n", sel.fba)
+ format("#define PS_LTF %d\n", sel.ltf)
+ format("#define PS_AUTOMATIC_LOD %d\n", sel.automatic_lod)
+ format("#define PS_MANUAL_LOD %d\n", sel.manual_lod)
+ format("#define PS_COLCLIP %d\n", sel.colclip)
+ format("#define PS_DATE %d\n", sel.date)
+ format("#define PS_TCOFFSETHACK %d\n", sel.tcoffsethack)

4
plugins/GSdx/GSDeviceOGL.h
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@ -293,8 +293,10 @@ public:
uint32 urban_chaos_hle:1;
uint32 tales_of_abyss_hle:1;
uint32 tex_is_fb:1; // Jak Shadows
uint32 automatic_lod:1;
uint32 manual_lod:1;
uint32 _free2:13;
uint32 _free2:11;
};
uint64 key;

19
plugins/GSdx/res/glsl/tfx_fs.glsl
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@ -78,7 +78,26 @@ vec4 sample_c(vec2 uv)
#if PS_TEX_IS_FB == 1
return texelFetch(RtSampler, ivec2(gl_FragCoord.xy), 0);
#else
#if PS_AUTOMATIC_LOD == 1
return texture(TextureSampler, uv);
#elif PS_MANUAL_LOD == 1
// FIXME add LOD: K - ( LOG2(Q) * (1 << L))
float K = MinMax.x;
float L = MinMax.y;
float bias = MinMax.z;
float max_lod = MinMax.w;
float gs_lod = K - log2(abs(PSin.t_float.w)) * L;
// FIXME max useful ?
//float lod = max(min(gs_lod, max_lod) - bias, 0.0f);
float lod = min(gs_lod, max_lod) - bias;
return textureLod(TextureSampler, uv, lod);
#else
return textureLod(TextureSampler, uv, 0); // No lod
#endif
#endif
}

19
plugins/GSdx/res/glsl_source.h
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@ -998,7 +998,26 @@ static const char* const tfx_fs_all_glsl =
"#if PS_TEX_IS_FB == 1\n"
" return texelFetch(RtSampler, ivec2(gl_FragCoord.xy), 0);\n"
"#else\n"
"\n"
"#if PS_AUTOMATIC_LOD == 1\n"
" return texture(TextureSampler, uv);\n"
"#elif PS_MANUAL_LOD == 1\n"
" // FIXME add LOD: K - ( LOG2(Q) * (1 << L))\n"
" float K = MinMax.x;\n"
" float L = MinMax.y;\n"
" float bias = MinMax.z;\n"
" float max_lod = MinMax.w;\n"
"\n"
" float gs_lod = K - log2(abs(PSin.t_float.w)) * L;\n"
" // FIXME max useful ?\n"
" //float lod = max(min(gs_lod, max_lod) - bias, 0.0f);\n"
" float lod = min(gs_lod, max_lod) - bias;\n"
"\n"
" return textureLod(TextureSampler, uv, lod);\n"
"#else\n"
" return textureLod(TextureSampler, uv, 0); // No lod\n"
"#endif\n"
"\n"
"#endif\n"
"}\n"
"\n"