shaders/character.h

   1 #ifndef SHADER_character_H
   2 #define SHADER_character_H
   3 static void shader_character_link(void);
   4 static void shader_character_register(void);
   5 static struct vg_shader _shader_character = {
   6    .name = "character",
   7    .link = shader_character_link,
   8    .vs =
   9 {
  10 .orig_file = "../shaders/character.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 "uniform float uOpacity;\n"
  22 "\n"
  23 "out vec4 aColour;\n"
  24 "out vec2 aUv;\n"
  25 "out vec3 aNorm;\n"
  26 "out vec3 aCo;\n"
  27 "out float aOpacity;\n"
  28 "\n"
  29 "void main()\n"
  30 "{\n"
  31 "   vec3 world_pos = uMdl * vec4(a_co,1.0);\n"
  32 "   gl_Position = uPv * vec4(world_pos,1.0);\n"
  33 "\n"
  34 "   aColour = a_colour;\n"
  35 "   aUv = a_uv;\n"
  36 "   aNorm = mat3(uMdl) * a_norm;\n"
  37 "   aCo = a_co;\n"
  38 "   aOpacity = 1.0-(gl_Position.y+0.5)*uOpacity;\n"
  39 "}\n"
  40 ""},
  41    .fs =
  42 {
  43 .orig_file = "../shaders/character.fs",
  44 .static_src =
  45 "out vec4 FragColor;\n"
  46 "\n"
  47 "uniform sampler2D uTexMain;\n"
  48 "uniform vec4 uColour;\n"
  49 "\n"
  50 "in vec4 aColour;\n"
  51 "in vec2 aUv;\n"
  52 "in vec3 aNorm;\n"
  53 "in vec3 aCo;\n"
  54 "in float aOpacity;\n"
  55 "\n"
  56 "void main()\n"
  57 "{\n"
  58 "   vec3 diffuse = texture( uTexMain, aUv ).rgb;\n"
  59 "   FragColor = vec4(pow(diffuse,vec3(1.0)),aOpacity);\n"
  60 "}\n"
  61 ""},
  62 };
  63
  64 static GLuint _uniform_character_uPv;
  65 static GLuint _uniform_character_uMdl;
  66 static GLuint _uniform_character_uOpacity;
  67 static GLuint _uniform_character_uTexMain;
  68 static GLuint _uniform_character_uColour;
  69 static void shader_character_uPv(m4x4f m){
  70    glUniformMatrix4fv( _uniform_character_uPv, 1, GL_FALSE, (float *)m );
  71 }
  72 static void shader_character_uMdl(m4x3f m){
  73    glUniformMatrix4x3fv( _uniform_character_uMdl, 1, GL_FALSE, (float *)m );
  74 }
  75 static void shader_character_uOpacity(float f){
  76    glUniform1f( _uniform_character_uOpacity, f );
  77 }
  78 static void shader_character_uTexMain(int i){
  79    glUniform1i( _uniform_character_uTexMain, i );
  80 }
  81 static void shader_character_uColour(v4f v){
  82    glUniform4fv( _uniform_character_uColour, 1, v );
  83 }
  84 static void shader_character_register(void){
  85    vg_shader_register( &_shader_character );
  86 }
  87 static void shader_character_use(void){ glUseProgram(_shader_character.id); }
  88 static void shader_character_link(void){
  89    _uniform_character_uPv = glGetUniformLocation( _shader_character.id, "uPv" );
  90    _uniform_character_uMdl = glGetUniformLocation( _shader_character.id, "uMdl" );
  91    _uniform_character_uOpacity = glGetUniformLocation( _shader_character.id, "uOpacity" );
  92    _uniform_character_uTexMain = glGetUniformLocation( _shader_character.id, "uTexMain" );
  93    _uniform_character_uColour = glGetUniformLocation( _shader_character.id, "uColour" );
  94 }
  95 #endif /* SHADER_character_H */