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OPENGL: Add support for shaders with GL contexts.

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This commit is contained in:
Johannes Schickel 2015-12-20 09:30:11 +01:00
parent 19abd8ccbb
commit fee1aa5502
9 changed files with 360 additions and 56 deletions
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21
backends/graphics/opengl/context.cpp
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@ -74,14 +74,35 @@ void OpenGLGraphicsManager::initializeGLContext() {
const char *extString = (const char *)g_context.glGetString(GL_EXTENSIONS);
#if !USE_FORCED_GLES && !USE_FORCED_GLES2
bool ARBShaderObjects = false;
bool ARBShadingLanguage100 = false;
bool ARBVertexShader = false;
bool ARBFragmentShader = false;
#endif
Common::StringTokenizer tokenizer(extString, " ");
while (!tokenizer.empty()) {
Common::String token = tokenizer.nextToken();
if (token == "GL_ARB_texture_non_power_of_two") {
g_context.NPOTSupported = true;
#if !USE_FORCED_GLES && !USE_FORCED_GLES2
} else if (token == "GL_ARB_shader_objects") {
ARBShaderObjects = true;
} else if (token == "GL_ARB_shading_language_100") {
ARBShadingLanguage100 = true;
} else if (token == "GL_ARB_vertex_shader") {
ARBVertexShader = true;
} else if (token == "GL_ARB_fragment_shader") {
ARBFragmentShader = true;
#endif
}
}
#if !USE_FORCED_GLES && !USE_FORCED_GLES2
g_context.shadersSupported = ARBShaderObjects & ARBShadingLanguage100 & ARBVertexShader & ARBFragmentShader;
#endif
}
} // End of namespace OpenGL