shaders/blit.h

   1 #ifndef SHADER_blit_H
   2 #define SHADER_blit_H
   3 static void shader_blit_link(void);
   4 static void shader_blit_register(void);
   5 static struct vg_shader _shader_blit = {
   6    .name = "blit",
   7    .link = shader_blit_link,
   8    .vs =
   9 {
  10 .orig_file = "../shaders/blit.vs",
  11 .static_src =
  12 "layout (location=0) in vec2 a_co;\n"
  13 "out vec2 aUv;\n"
  14 "\n"
  15 "void main()\n"
  16 "{\n"
  17 "   gl_Position = vec4(a_co*2.0-1.0,0.0,1.0);\n"
  18 "   aUv = a_co;\n"
  19 "}\n"
  20 ""},
  21    .fs =
  22 {
  23 .orig_file = "../shaders/blit.fs",
  24 .static_src =
  25 "out vec4 FragColor;\n"
  26 "uniform sampler2D uTexMain;\n"
  27 "\n"
  28 "in vec2 aUv;\n"
  29 "\n"
  30 "void main()\n"
  31 "{\n"
  32 "   FragColor = texture( uTexMain, aUv );\n"
  33 "}\n"
  34 ""},
  35 };
  36
  37 static GLuint _uniform_blit_uTexMain;
  38 static void shader_blit_uTexMain(int i){
  39    glUniform1i( _uniform_blit_uTexMain, i );
  40 }
  41 static void shader_blit_register(void){
  42    vg_shader_register( &_shader_blit );
  43 }
  44 static void shader_blit_use(void){ glUseProgram(_shader_blit.id); }
  45 static void shader_blit_link(void){
  46    _uniform_blit_uTexMain = glGetUniformLocation( _shader_blit.id, "uTexMain" );
  47 }
  48 #endif /* SHADER_blit_H */