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runtime caps for opengl

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aap
2020-11-17 15:05:47 +01:00
parent 7e80d45cdb
commit cea326a4ce
5 changed files with 33 additions and 1 deletions
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src/gl/gl3device.cpp
+14
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@@ -59,6 +59,8 @@ struct GlGlobals
const char *winTitle;
} glGlobals;
Gl3Caps gl3Caps;
int32 alphaFunc;
float32 alphaRef;
@@ -1498,6 +1500,18 @@ stopGLFW(void)
static int
initOpenGL(void)
{
memset(&gl3Caps, 0, sizeof(gl3Caps));
int numExt;
glGetIntegerv(GL_NUM_EXTENSIONS, &numExt);
for(int i = 0; i < numExt; i++){
const char *ext = (const char*)glGetStringi(GL_EXTENSIONS, i);
if(strcmp(ext, "GL_EXT_texture_compression_s3tc") == 0)
gl3Caps.dxtSupported = true;
else if(strcmp(ext, "GL_KHR_texture_compression_astc_ldr") == 0)
gl3Caps.astcSupported = true;
// printf("%d %s\n", i, ext);
}
#ifndef RW_GL_USE_UBOS
u_alphaRef = registerUniform("u_alphaRef");
u_fogData = registerUniform("u_fogData");