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r_world.c: workaround Intel UHD 600 driver bug

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git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@1662 af15c1b1-3010-417e-b628-4374ebc0bcbd
This commit is contained in:
Eric Wasylishen 2019-12-15 23:52:13 +00:00
parent e0e2d16ca2
commit 42c0491e92
1 changed files with 8 additions and 3 deletions
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11
Quake/r_world.c
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@ -825,11 +825,16 @@ void GLWorld_CreateShaders (void)
{ "TexCoords", texCoordsAttrIndex },
{ "LMCoords", LMCoordsAttrIndex }
};
// Driver bug workarounds:
// - "Intel(R) UHD Graphics 600" version "4.6.0 - Build 26.20.100.7263"
// crashing on glUseProgram with `vec3 Vert` and
// `gl_ModelViewProjectionMatrix * vec4(Vert, 1.0);`. Work around with
// making Vert a vec4. (https://sourceforge.net/p/quakespasm/bugs/39/)
const GLchar *vertSource = \
"#version 110\n"
"\n"
"attribute vec3 Vert;\n"
"attribute vec4 Vert;\n"
"attribute vec2 TexCoords;\n"
"attribute vec2 LMCoords;\n"
"\n"
@ -839,7 +844,7 @@ void GLWorld_CreateShaders (void)
"{\n"
" gl_TexCoord[0] = vec4(TexCoords, 0.0, 0.0);\n"
" gl_TexCoord[1] = vec4(LMCoords, 0.0, 0.0);\n"
" gl_Position = gl_ModelViewProjectionMatrix * vec4(Vert, 1.0);\n"
" gl_Position = gl_ModelViewProjectionMatrix * Vert;\n"
" FogFragCoord = gl_Position.w;\n"
"}\n";