Remove a few unneeded shader program switches.

diff --git a/effect_chain.cpp b/effect_chain.cpp
index b0d4aafbac71dc9a2864c0941ddf01cfc10c8bd0..9b77ef032f49f5359df6fb1925852b1b9b6bc610 100644 (file)
--- a/effect_chain.cpp
+++ b/effect_chain.cpp
@@ -1851,9 +1851,7 @@ void EffectChain::execute_phase(Phase *phase, bool last_phase,
                output_textures->insert(make_pair(phase, tex_num));
        }
 
-       const GLuint glsl_program_num = phase->glsl_program_num;
-       check_error();
-       glUseProgram(glsl_program_num);
+       glUseProgram(phase->glsl_program_num);
        check_error();
 
        // Set up RTT inputs for this phase.
@@ -1884,7 +1882,7 @@ void EffectChain::execute_phase(Phase *phase, bool last_phase,
        for (unsigned i = 0; i < phase->effects.size(); ++i) {
                Node *node = phase->effects[i];
                unsigned old_sampler_num = sampler_num;
-               node->effect->set_gl_state(glsl_program_num, phase->effect_ids[node], &sampler_num);
+               node->effect->set_gl_state(phase->glsl_program_num, phase->effect_ids[node], &sampler_num);
                check_error();
 
                if (node->effect->is_single_texture()) {
@@ -1927,9 +1925,6 @@ void EffectChain::execute_phase(Phase *phase, bool last_phase,
        glDrawArrays(GL_TRIANGLES, 0, 3);
        check_error();
        
-       glUseProgram(0);
-       check_error();
-
        for (unsigned i = 0; i < phase->effects.size(); ++i) {
                Node *node = phase->effects[i];
                node->effect->clear_gl_state();