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Changed back to highp for gles2 shaders. Medium was causes precision issues on some GPUs. Need to make run-time option.

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This commit is contained in:
Emile Belanger 2021-03-10 21:30:06 +00:00
parent bf173a19cd
commit 18fe9a81b8
3 changed files with 13 additions and 6 deletions
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4
src/common/rendering/gles/gles_shader.cpp
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@ -247,8 +247,8 @@ bool FShader::Load(const char * name, const char * vert_prog_lump_, const char *
FString i_data = R"(
// these settings are actually pointless but there seem to be some old ATI drivers that fail to compile the shader without setting the precision here.
precision mediump int;
precision mediump float;
precision highp int;
precision highp float;
// light buffers
uniform vec4 lights[MAXIMUM_LIGHT_VECTORS];

4
src/common/rendering/gles/gles_shaderprogram.cpp
View file

@ -236,8 +236,8 @@ FString FShaderProgram::PatchShader(ShaderType type, const FString &code, const
patchedCode.AppendFormat("#version %d\n", 100); // Set to GLES2
patchedCode << "precision mediump int;\n";
patchedCode << "precision mediump float;\n";
patchedCode << "precision highp int;\n";
patchedCode << "precision highp float;\n";
if (defines)
patchedCode << defines;

11
wadsrc/static/shaders_gles/Uniform usage notes.txt
View file

@ -1,9 +1,16 @@
How can I remove the alpha test discard?
MISSING:
All post processing gone
Present shader missing dither
Shadow maps gone
HDR modes gone
Materials gone
gl_satformula does not do anything (remove an 'if' in shader)
Broken to be fixed:
Texture filtering modes, currently fixed to linear mipmap