string frag_shader_header = read_version_dependent_file("header", "frag");
string frag_shader = "";
- // Create functions for all the texture inputs that we need.
+ // Create functions and uniforms for all the texture inputs that we need.
for (unsigned i = 0; i < phase->inputs.size(); ++i) {
Node *input = phase->inputs[i]->output_node;
char effect_id[256];
frag_shader += "\treturn tex2D(tex_" + string(effect_id) + ", tc);\n";
frag_shader += "}\n";
frag_shader += "\n";
+
+ Uniform<int> uniform;
+ uniform.name = effect_id;
+ uniform.value = &phase->input_samplers[i];
+ uniform.prefix = "tex";
+ uniform.num_values = 1;
+ uniform.location = -1;
+ phase->uniforms_sampler2d.push_back(uniform);
}
// Give each effect in the phase its own ID.
sort(phase->inputs.begin(), phase->inputs.end());
phase->inputs.erase(unique(phase->inputs.begin(), phase->inputs.end()), phase->inputs.end());
+ // Allocate samplers for each input.
+ phase->input_samplers.resize(phase->inputs.size());
+
// We added the effects from the output and back, but we need to output
// them in topological sort order in the shader.
phase->effects = topological_sort(phase->effects);
check_error();
generated_mipmaps->insert(input);
}
- setup_rtt_sampler(glsl_program_num, sampler, phase->effect_ids[input->output_node], phase->input_needs_mipmaps);
+ setup_rtt_sampler(sampler, phase->input_needs_mipmaps);
+ phase->input_samplers[sampler] = sampler; // Bind the sampler to the right uniform.
}
// And now the output. (Already set up for us if it is the last phase.)
}
}
-void EffectChain::setup_rtt_sampler(GLuint glsl_program_num, int sampler_num, const string &effect_id, bool use_mipmaps)
+void EffectChain::setup_rtt_sampler(int sampler_num, bool use_mipmaps)
{
glActiveTexture(GL_TEXTURE0 + sampler_num);
check_error();
check_error();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
check_error();
-
- string texture_name = string("tex_") + effect_id;
- glUniform1i(glGetUniformLocation(glsl_program_num, texture_name.c_str()), sampler_num);
- check_error();
}
} // namespace movit