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VideoCommon: Implement depth range equation in vertex shader.

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This commit is contained in:
Jules Blok
2016-08-03 02:01:36 +02:00
parent 0015d2e86b
commit c223bd47b9
3 changed files with 11 additions and 12 deletions
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10
Source/Core/VideoCommon/VertexShaderGen.cpp
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@ -399,14 +399,14 @@ ShaderCode GenerateVertexShaderCode(APIType api_type, const vertex_shader_uid_da
out.Write("o.colors_1 = color1;\n");
}
// We have to handle the depth range in the vertex shader, because some games will use a depth range beyond
// the normal depth range of 0..1.
out.Write("o.pos.z = o.pos.w * " I_PIXELCENTERCORRECTION".w + o.pos.z * " I_PIXELCENTERCORRECTION".z;\n");
// write the true depth value, if the game uses depth textures pixel shaders will override with
// the correct values
// if not early z culling will improve speed
if (g_ActiveConfig.backend_info.bSupportsClipControl)
{
out.Write("o.pos.z = -o.pos.z;\n");
}
else // OGL
if (!g_ActiveConfig.backend_info.bSupportsClipControl)
{
// this results in a scale from -1..0 to -1..1 after perspective
// divide