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 "out vec3 aWorldCo;\n"
  27 "\n"
  28 "void main()\n"
  29 "{\n"
  30 "   vec3 world_pos = uMdl * vec4(a_co,1.0);\n"
  31 "   gl_Position = uPv * vec4( world_pos, 1.0 );\n"
  32 "   aColour = a_colour;\n"
  33 "   aUv = a_uv;\n"
  34 "   aNorm = mat3(uMdl) * a_norm;\n"
  35 "   aCo = a_co;\n"
  36 "   aWorldCo = world_pos;\n"
  37 "}\n"
  38 ""},
  39    .fs =
  40 {
  41 .orig_file = "../../shaders/standard.fs",
  42 .static_src =
  43 "out vec4 FragColor;\n"
  44 "\n"
  45 "uniform sampler2D uTexMain;\n"
  46 "uniform vec4 uColour;\n"
  47 "\n"
  48 "in vec4 aColour;\n"
  49 "in vec2 aUv;\n"
  50 "in vec3 aNorm;\n"
  51 "in vec3 aCo;\n"
  52 "\n"
  53 "void main()\n"
  54 "{\n"
  55 "   vec3 diffuse = texture( uTexMain, aUv ).rgb;\n"
  56 "   float light1 = max(0.0,dot(-vec3(0.5,-0.8,0.25), aNorm));\n"
  57 "   float light2 = max(0.0,dot(-vec3(-0.8,0.5,-0.25), aNorm));\n"
  58 "   diffuse += vec3(0.2,0.2,0.2) +\n"
  59 "             vec3(1.0,1.0,0.9)*light1 + \n"
  60 "             vec3(0.1,0.3,0.4)*light2;\n"
  61 "   FragColor = vec4(diffuse*uColour.rgb, aColour.a*uColour.a);\n"
  62 "}\n"
  63 ""},
  64 };
  65
  66 static GLuint _uniform_standard_uPv;
  67 static GLuint _uniform_standard_uMdl;
  68 static GLuint _uniform_standard_uTexMain;
  69 static GLuint _uniform_standard_uColour;
  70 static void shader_standard_uPv(m4x4f m){
  71    glUniformMatrix4fv( _uniform_standard_uPv, 1, GL_FALSE, (float *)m );
  72 }
  73 static void shader_standard_uMdl(m4x3f m){
  74    glUniformMatrix4x3fv( _uniform_standard_uMdl, 1, GL_FALSE, (float *)m );
  75 }
  76 static void shader_standard_uTexMain(int i){
  77    glUniform1i( _uniform_standard_uTexMain, i );
  78 }
  79 static void shader_standard_uColour(v4f v){
  80    glUniform4fv( _uniform_standard_uColour, 1, v );
  81 }
  82 static void shader_standard_register(void){
  83    vg_shader_register( &_shader_standard );
  84 }
  85 static void shader_standard_use(void){ glUseProgram(_shader_standard.id); }
  86 static void shader_standard_link(void){
  87    _uniform_standard_uPv = glGetUniformLocation( _shader_standard.id, "uPv" );
  88    _uniform_standard_uMdl = glGetUniformLocation( _shader_standard.id, "uMdl" );
  89    _uniform_standard_uTexMain = glGetUniformLocation( _shader_standard.id, "uTexMain" );
  90    _uniform_standard_uColour = glGetUniformLocation( _shader_standard.id, "uColour" );
  91 }
  92 #endif /* SHADER_standard_H */