Merge pull request #1825 from ReinUsesLisp/shader-pipeline-cache

gl_shader_manager: Update pipeline when programs have changed
This commit is contained in:
bunnei 2018-12-01 23:48:55 -05:00 committed by GitHub
commit 80aa124b1d
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23

View file

@ -60,6 +60,17 @@ public:
} }
void ApplyTo(OpenGLState& state) { void ApplyTo(OpenGLState& state) {
UpdatePipeline();
state.draw.shader_program = 0;
state.draw.program_pipeline = pipeline.handle;
state.geometry_shaders.enabled = (gs != 0);
}
private:
void UpdatePipeline() {
// Avoid updating the pipeline when values have no changed
if (old_vs == vs && old_fs == fs && old_gs == gs)
return;
// Workaround for AMD bug // Workaround for AMD bug
glUseProgramStages(pipeline.handle, glUseProgramStages(pipeline.handle,
GL_VERTEX_SHADER_BIT | GL_GEOMETRY_SHADER_BIT | GL_FRAGMENT_SHADER_BIT, GL_VERTEX_SHADER_BIT | GL_GEOMETRY_SHADER_BIT | GL_FRAGMENT_SHADER_BIT,
@ -68,14 +79,16 @@ public:
glUseProgramStages(pipeline.handle, GL_VERTEX_SHADER_BIT, vs); glUseProgramStages(pipeline.handle, GL_VERTEX_SHADER_BIT, vs);
glUseProgramStages(pipeline.handle, GL_GEOMETRY_SHADER_BIT, gs); glUseProgramStages(pipeline.handle, GL_GEOMETRY_SHADER_BIT, gs);
glUseProgramStages(pipeline.handle, GL_FRAGMENT_SHADER_BIT, fs); glUseProgramStages(pipeline.handle, GL_FRAGMENT_SHADER_BIT, fs);
state.draw.shader_program = 0;
state.draw.program_pipeline = pipeline.handle; // Update the old values
state.geometry_shaders.enabled = (gs != 0); old_vs = vs;
old_fs = fs;
old_gs = gs;
} }
private:
OGLPipeline pipeline; OGLPipeline pipeline;
GLuint vs{}, fs{}, gs{}; GLuint vs{}, fs{}, gs{};
GLuint old_vs{}, old_fs{}, old_gs{};
}; };
} // namespace OpenGL::GLShader } // namespace OpenGL::GLShader