OrdinaryMagician/vkdoom_m
OrdinaryMagician/vkdoom_m
1
Fork 0
Code Activity

- on older ATI drivers where the clip planes are broken, only disable the clip planes themselves, but not OpenGL 3.x so that dynamic lights still work as intended.

Browse source 
- only disable clip planes on Windows, but not on Linux or macOS.
- If a driver reports full OpenGL 4.5 support, assume that all features are working properly.
This commit is contained in:
Christoph Oelckers 2016-08-08 12:55:09 +02:00
commit 9c9edbffdb
7 changed files with 27 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

17
src/gl/system/gl_interface.cpp
View file

@ -192,6 +192,7 @@ void gl_LoadExtensions()
gl.version = 2.11f;
gl.glslversion = 0;
gl.lightmethod = LM_SOFTWARE;
gl.flags |= RFL_NO_CLIP_PLANES;
}
else if (gl.version < 3.0f)
{
@ -200,17 +201,18 @@ void gl_LoadExtensions()
if (!CheckExtension("GL_EXT_packed_float")) gl.flags |= RFL_NO_RGBA16F;
if (!CheckExtension("GL_EXT_packed_depth_stencil")) gl.flags |= RFL_NO_DEPTHSTENCIL;
gl.flags |= RFL_NO_CLIP_PLANES;
}
else if (gl.version < 4.f)
{
#ifdef _WIN32
if (strstr(gl.vendorstring, "ATI Tech"))
{
gl.version = 2.11f;
gl.glslversion = 1.21f;
gl.lightmethod = LM_SOFTWARE; // do not use uniform buffers with the fallback shader, it may cause problems.
gl.flags |= RFL_NO_CLIP_PLANES; // gl_ClipDistance is horribly broken on ATI GL3 drivers for Windows.
}
#endif
}
else
else if (gl.version < 4.5f)
{
// don't use GL 4.x features when running in GL 3 emulation mode.
if (CheckExtension("GL_ARB_buffer_storage"))
@ -234,6 +236,13 @@ void gl_LoadExtensions()
gl.version = 3.3f;
}
}
else
{
// Assume that everything works without problems on GL 4.5 drivers where these things are core features.
gl.flags |= RFL_SHADER_STORAGE_BUFFER | RFL_BUFFER_STORAGE;
gl.lightmethod = LM_DIRECT;
gl.buffermethod = BM_PERSISTENT;
}
const char *lm = Args->CheckValue("-lightmethod");
if (lm != NULL)