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GPU/HW: Tweak vertex shader offsets

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Fixes Doom/Dark Forces/etc in hardware renderer, but only at 1x
resolution. Fixes missing lines in Castlevania SOTM, Ridge Racer Type 4,
etc.
This commit is contained in:
Connor McLaughlin
2020-04-21 22:07:53 +10:00
parent 834f3768a1
commit ec5b52b3fb
2 changed files with 5 additions and 3 deletions
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6
src/core/gpu_hw_shadergen.cpp
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@ -400,8 +400,10 @@ std::string GPU_HW_ShaderGen::GenerateBatchVertexShader(bool textured)
ss << R"(
{
// 0..+1023 -> -1..1
float pos_x = (float(a_pos.x) / 512.0) - 1.0;
float pos_y = (float(a_pos.y) / -256.0) + 1.0;
float pos_x = ((float(a_pos.x) + 0.5) / 1024.0);
float pos_y = ((float(a_pos.y) + 0.5) / 512.0);
pos_x = (pos_x * 2.0) - 1.0;
pos_y = ((1.0 - pos_y) * 2.0) - 1.0;
v_pos = float4(pos_x, pos_y, 0.0, 1.0);
v_col0 = a_col0;