shaders/menu.h

   1 #ifndef SHADER_menu_H
   2 #define SHADER_menu_H
   3 static void shader_menu_link(void);
   4 static void shader_menu_register(void);
   5 static struct vg_shader _shader_menu = {
   6    .name = "menu",
   7    .link = shader_menu_link,
   8    .vs =
   9 {
  10 .static_src =
  11 "layout (location=0) in vec3 a_co;\n"
  12 "layout (location=1) in vec3 a_norm;\n"
  13 "layout (location=2) in vec2 a_uv;\n"
  14 "layout (location=3) in vec4 a_colour;\n"
  15 "layout (location=4) in vec4 a_weights;\n"
  16 "layout (location=5) in ivec4 a_groups;\n"
  17 "\n"
  18 "#line      2        0 \n"
  19 "#line       1        2 \n"
  20 "const float k_motion_lerp_amount = 0.01;\n"
  21 "\n"
  22 "#line      2        0 \n"
  23 "\n"
  24 "out vec3 aMotionVec0;\n"
  25 "out vec3 aMotionVec1;\n"
  26 "\n"
  27 "void vs_motion_out( vec4 vproj0, vec4 vproj1 )\n"
  28 "{\n"
  29 "   // This magically solves some artifacting errors!\n"
  30 "   //\n"
  31 "   vproj1 = vproj0*(1.0-k_motion_lerp_amount) + vproj1*k_motion_lerp_amount;\n"
  32 "\n"
  33 "   aMotionVec0 = vec3( vproj0.xy, vproj0.w );\n"
  34 "   aMotionVec1 = vec3( vproj1.xy, vproj1.w );\n"
  35 "}\n"
  36 "\n"
  37 "#line      3        0 \n"
  38 "\n"
  39 "uniform mat4x3 uMdl;\n"
  40 "uniform mat4 uPv;\n"
  41 "uniform mat4 uPvmPrev;\n"
  42 "\n"
  43 "out vec4 aColour;\n"
  44 "out vec2 aUv;\n"
  45 "out vec3 aNorm;\n"
  46 "out vec3 aCo;\n"
  47 "out vec3 aWorldCo;\n"
  48 "\n"
  49 "void main()\n"
  50 "{\n"
  51 "   vec3 world_pos0 = uMdl     * vec4( a_co, 1.0 );\n"
  52 "   vec4 vproj0     = uPv      * vec4( world_pos0, 1.0 );\n"
  53 "   vec4 vproj1     = uPvmPrev * vec4( a_co, 1.0 );\n"
  54 "\n"
  55 "   vs_motion_out( vproj0, vproj1 );\n"
  56 "\n"
  57 "   gl_Position = vproj0;\n"
  58 "   aWorldCo = world_pos0;\n"
  59 "   aColour = a_colour;\n"
  60 "   aUv = a_uv;\n"
  61 "   aNorm = mat3(uMdl) * a_norm;\n"
  62 "   aCo = a_co;\n"
  63 "}\n"
  64 ""},
  65    .fs =
  66 {
  67 .static_src =
  68 "out vec4 FragColor;\n"
  69 "\n"
  70 "uniform sampler2D uTexMain;\n"
  71 "uniform vec4 uColour;\n"
  72 "\n"
  73 "in vec4 aColour;\n"
  74 "in vec2 aUv;\n"
  75 "in vec3 aNorm;\n"
  76 "in vec3 aCo;\n"
  77 "\n"
  78 "void main()\n"
  79 "{\n"
  80 "   vec4 diffuse = texture( uTexMain, aUv );\n"
  81 "\n"
  82 "   if( diffuse.a < 0.5 )\n"
  83 "      discard;\n"
  84 "\n"
  85 "   FragColor = vec4( diffuse.rgb, 1.0 ) * uColour;\n"
  86 "}\n"
  87 ""},
  88 };
  89
  90 static GLuint _uniform_menu_uMdl;
  91 static GLuint _uniform_menu_uPv;
  92 static GLuint _uniform_menu_uPvmPrev;
  93 static GLuint _uniform_menu_uTexMain;
  94 static GLuint _uniform_menu_uColour;
  95 static void shader_menu_uMdl(m4x3f m){
  96    glUniformMatrix4x3fv(_uniform_menu_uMdl,1,GL_FALSE,(float*)m);
  97 }
  98 static void shader_menu_uPv(m4x4f m){
  99    glUniformMatrix4fv(_uniform_menu_uPv,1,GL_FALSE,(float*)m);
 100 }
 101 static void shader_menu_uPvmPrev(m4x4f m){
 102    glUniformMatrix4fv(_uniform_menu_uPvmPrev,1,GL_FALSE,(float*)m);
 103 }
 104 static void shader_menu_uTexMain(int i){
 105    glUniform1i(_uniform_menu_uTexMain,i);
 106 }
 107 static void shader_menu_uColour(v4f v){
 108    glUniform4fv(_uniform_menu_uColour,1,v);
 109 }
 110 static void shader_menu_register(void){
 111    vg_shader_register( &_shader_menu );
 112 }
 113 static void shader_menu_use(void){ glUseProgram(_shader_menu.id); }
 114 static void shader_menu_link(void){
 115    _uniform_menu_uMdl = glGetUniformLocation( _shader_menu.id, "uMdl" );
 116    _uniform_menu_uPv = glGetUniformLocation( _shader_menu.id, "uPv" );
 117    _uniform_menu_uPvmPrev = glGetUniformLocation( _shader_menu.id, "uPvmPrev" );
 118    _uniform_menu_uTexMain = glGetUniformLocation( _shader_menu.id, "uTexMain" );
 119    _uniform_menu_uColour = glGetUniformLocation( _shader_menu.id, "uColour" );
 120 }
 121 #endif /* SHADER_menu_H */