Rework uniform setting.

[movit] / dither_effect.cpp

diff --git a/dither_effect.cpp b/dither_effect.cpp
index 41ea9b432b80d3c94bf093a184f2632721dcbbcd..574d70a5cf82bcfc1adac94b8e8a50a5a00d1668 100644 (file)
--- a/dither_effect.cpp
+++ b/dither_effect.cpp
@@ -35,6 +35,10 @@ DitherEffect::DitherEffect()
        register_int("output_width", &width);
        register_int("output_height", &height);
        register_int("num_bits", &num_bits);
+       register_uniform_float("round_fac", &uniform_round_fac);
+       register_uniform_float("inv_round_fac", &uniform_inv_round_fac);
+       register_uniform_vec2("tc_scale", uniform_tc_scale);
+       register_uniform_sampler2d("dither_tex", &uniform_dither_tex);
 
        glGenTextures(1, &texnum);
 }
@@ -110,19 +114,19 @@ void DitherEffect::set_gl_state(GLuint glsl_program_num, const string &prefix, u
        glBindTexture(GL_TEXTURE_2D, texnum);
        check_error();
 
-       set_uniform_int(glsl_program_num, prefix, "dither_tex", *sampler_num);
+       uniform_dither_tex = *sampler_num;
        ++*sampler_num;
 
        // In theory, we should adjust for the texel centers that have moved here as well,
        // but since we use GL_NEAREST and we don't really care a lot what texel we sample,
        // we don't have to worry about it.     
-       float tc_scale[] = { float(width) / float(texture_width), float(height) / float(texture_height) };
-       set_uniform_vec2(glsl_program_num, prefix, "tc_scale", tc_scale);
+       uniform_tc_scale[0] = float(width) / float(texture_width);
+       uniform_tc_scale[1] = float(height) / float(texture_height);
 
        // Used if the shader needs to do explicit rounding.
        int round_fac = (1 << num_bits) - 1;
-       set_uniform_float(glsl_program_num, prefix, "round_fac", round_fac);
-       set_uniform_float(glsl_program_num, prefix, "inv_round_fac", 1.0f / round_fac);
+       uniform_round_fac = round_fac;
+       uniform_inv_round_fac = 1.0f / round_fac;
 }
 
 }  // namespace movit