shaders/standard.h

   1 #ifndef SHADER_standard_H
   2 #define SHADER_standard_H
   3 static void shader_standard_link(void);
   4 static void shader_standard_register(void);
   5 static struct vg_shader _shader_standard = {
   6    .name = "standard",
   7    .link = shader_standard_link,
   8    .vs =
   9 {
  10 .orig_file = "../shaders/standard.vs",
  11 .static_src =
  12 "layout (location=0) in vec3 a_co;\n"
  13 "layout (location=1) in vec3 a_norm;\n"
  14 "layout (location=2) in vec4 a_colour;\n"
  15 "layout (location=3) in vec2 a_uv;\n"
  16 "\n"
  17 "#line      2        0 \n"
  18 "\n"
  19 "uniform mat4 uPv;\n"
  20 "uniform mat4x3 uMdl;\n"
  21 "\n"
  22 "out vec4 aColour;\n"
  23 "out vec2 aUv;\n"
  24 "out vec3 aNorm;\n"
  25 "out vec3 aCo;\n"
  26 "\n"
  27 "void main()\n"
  28 "{\n"
  29 "   gl_Position = uPv * vec4( uMdl * vec4(a_co,1.0), 1.0 );\n"
  30 "   aColour = a_colour;\n"
  31 "   aUv = a_uv;\n"
  32 "   aNorm = mat3(uMdl) * a_norm;\n"
  33 "   aCo = a_co;\n"
  34 "}\n"
  35 ""},
  36    .fs =
  37 {
  38 .orig_file = "../shaders/standard.fs",
  39 .static_src =
  40 "out vec4 FragColor;\n"
  41 "\n"
  42 "uniform sampler2D uTexMain;\n"
  43 "uniform vec4 uColour;\n"
  44 "\n"
  45 "in vec4 aColour;\n"
  46 "in vec2 aUv;\n"
  47 "in vec3 aNorm;\n"
  48 "in vec3 aCo;\n"
  49 "\n"
  50 "void main()\n"
  51 "{\n"
  52 "   vec3 diffuse = texture( uTexMain, aUv ).rgb;\n"
  53 "   float light1 = max(0.0,dot(-vec3(0.5,-0.8,0.25), aNorm));\n"
  54 "   float light2 = max(0.0,dot(-vec3(-0.8,0.5,-0.25), aNorm));\n"
  55 "   diffuse += vec3(0.2,0.2,0.2) +\n"
  56 "             vec3(1.0,1.0,0.9)*light1 + \n"
  57 "             vec3(0.1,0.3,0.4)*light2;\n"
  58 "   FragColor = vec4(diffuse*uColour.rgb, aColour.a*uColour.a);\n"
  59 "}\n"
  60 ""},
  61 };
  62
  63 static GLuint _uniform_standard_uPv;
  64 static GLuint _uniform_standard_uMdl;
  65 static GLuint _uniform_standard_uTexMain;
  66 static GLuint _uniform_standard_uColour;
  67 static void shader_standard_uPv(m4x4f m){
  68    glUniformMatrix4fv( _uniform_standard_uPv, 1, GL_FALSE, (float *)m );
  69 }
  70 static void shader_standard_uMdl(m4x3f m){
  71    glUniformMatrix4x3fv( _uniform_standard_uMdl, 1, GL_FALSE, (float *)m );
  72 }
  73 static void shader_standard_uTexMain(int i){
  74    glUniform1i( _uniform_standard_uTexMain, i );
  75 }
  76 static void shader_standard_uColour(v4f v){
  77    glUniform4fv( _uniform_standard_uColour, 1, v );
  78 }
  79 static void shader_standard_register(void){
  80    vg_shader_register( &_shader_standard );
  81 }
  82 static void shader_standard_use(void){ glUseProgram(_shader_standard.id); }
  83 static void shader_standard_link(void){
  84    _uniform_standard_uPv = glGetUniformLocation( _shader_standard.id, "uPv" );
  85    _uniform_standard_uMdl = glGetUniformLocation( _shader_standard.id, "uMdl" );
  86    _uniform_standard_uTexMain = glGetUniformLocation( _shader_standard.id, "uTexMain" );
  87    _uniform_standard_uColour = glGetUniformLocation( _shader_standard.id, "uColour" );
  88 }
  89 #endif /* SHADER_standard_H */