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GPU/ShaderGen: Remove texcoord offset 

Doesn't seem to be needed anymore, and causes issues in some games (e.g.
flickering polygons in Evil Dead)
This commit is contained in:
Connor McLaughlin 2021-01-11 14:07:45 +10:00
parent ba2710fb4c
commit 97971464d1
1 changed files with 2 additions and 6 deletions
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8
src/core/gpu_hw_shadergen.cpp
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@ -97,8 +97,6 @@ std::string GPU_HW_ShaderGen::GenerateBatchVertexShader(bool textured)
CONSTANT float POS_EPSILON = 0.00001;
#endif
#endif
CONSTANT float TEX_EPSILON = 0.00001;
)";
if (textured)
@ -159,10 +157,8 @@ CONSTANT float TEX_EPSILON = 0.00001;
v_col0 = a_col0;
#if TEXTURED
// Fudge the texture coordinates by half a pixel in screen-space.
// This fixes the rounding/interpolation error on NVIDIA GPUs with shared edges between triangles.
v_tex0 = float2(float((a_texcoord & 0xFFFFu) * RESOLUTION_SCALE) + TEX_EPSILON,
float((a_texcoord >> 16) * RESOLUTION_SCALE) + TEX_EPSILON);
v_tex0 = float2(float((a_texcoord & 0xFFFFu) * RESOLUTION_SCALE),
float((a_texcoord >> 16) * RESOLUTION_SCALE));
// base_x,base_y,palette_x,palette_y
v_texpage.x = (a_texpage & 15u) * 64u * RESOLUTION_SCALE;