shaders/model_font.h

   1 #ifndef SHADER_model_font_H
   2 #define SHADER_model_font_H
   3 static void shader_model_font_link(void);
   4 static void shader_model_font_register(void);
   5 static struct vg_shader _shader_model_font = {
   6    .name = "model_font",
   7    .link = shader_model_font_link,
   8    .vs =
   9 {
  10 .orig_file = "shaders/model_font.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 vec2 a_uv;\n"
  15 "\n"
  16 "#line       1        1 \n"
  17 "const float k_motion_lerp_amount = 0.01;\n"
  18 "\n"
  19 "#line      2        0 \n"
  20 "\n"
  21 "out vec3 aMotionVec0;\n"
  22 "out vec3 aMotionVec1;\n"
  23 "\n"
  24 "void vs_motion_out( vec4 vproj0, vec4 vproj1 )\n"
  25 "{\n"
  26 "   // This magically solves some artifacting errors!\n"
  27 "   //\n"
  28 "   vproj1 = vproj0*(1.0-k_motion_lerp_amount) + vproj1*k_motion_lerp_amount;\n"
  29 "\n"
  30 "   aMotionVec0 = vec3( vproj0.xy, vproj0.w );\n"
  31 "   aMotionVec1 = vec3( vproj1.xy, vproj1.w );\n"
  32 "}\n"
  33 "\n"
  34 "#line      6        0 \n"
  35 "\n"
  36 "uniform mat4x3 uMdl;\n"
  37 "uniform mat4 uPv;\n"
  38 "uniform mat4 uPvmPrev;\n"
  39 "uniform vec4 uOffset;\n"
  40 "\n"
  41 "out vec2 aUv;\n"
  42 "out vec4 aNorm;\n"
  43 "out vec3 aCo;\n"
  44 "out vec3 aWorldCo;\n"
  45 "\n"
  46 "void main()\n"
  47 "{\n"
  48 "   vec3 co = a_co*uOffset.w+uOffset.xyz;\n"
  49 "   vec3 world_pos0 = uMdl     * vec4( co, 1.0 );\n"
  50 "   vec4 vproj0     = uPv      * vec4( world_pos0, 1.0 );\n"
  51 "   vec4 vproj1     = uPvmPrev * vec4( co, 1.0 );\n"
  52 "\n"
  53 "   vs_motion_out( vproj0, vproj1 );\n"
  54 "\n"
  55 "   gl_Position = vproj0;\n"
  56 "\n"
  57 "   aUv = a_uv;\n"
  58 "   aNorm = vec4( mat3(uMdl) * a_norm, 0.0 );\n"
  59 "   aCo = a_co;\n"
  60 "   aWorldCo = world_pos0;\n"
  61 "}\n"
  62 ""},
  63    .fs =
  64 {
  65 .orig_file = "shaders/model_font.fs",
  66 .static_src =
  67 "layout (location = 0) out vec4 oColour;\n"
  68 "\n"
  69 "uniform sampler2D uTexMain;\n"
  70 "uniform vec4 uColour;\n"
  71 "\n"
  72 "in vec2 aUv;\n"
  73 "in vec4 aNorm;\n"
  74 "in vec3 aCo;\n"
  75 "\n"
  76 "#line       1        1 \n"
  77 "const float k_motion_lerp_amount = 0.01;\n"
  78 "\n"
  79 "#line      2        0 \n"
  80 "\n"
  81 "layout (location = 1) out vec2 oMotionVec;\n"
  82 "\n"
  83 "in vec3 aMotionVec0;\n"
  84 "in vec3 aMotionVec1;\n"
  85 "\n"
  86 "void compute_motion_vectors()\n"
  87 "{\n"
  88 "   // Write motion vectors\n"
  89 "   vec2 vmotion0 = aMotionVec0.xy / aMotionVec0.z;\n"
  90 "   vec2 vmotion1 = aMotionVec1.xy / aMotionVec1.z;\n"
  91 "\n"
  92 "   oMotionVec = (vmotion1-vmotion0) * (1.0/k_motion_lerp_amount);\n"
  93 "}\n"
  94 "\n"
  95 "#line     11        0 \n"
  96 "\n"
  97 "void main()\n"
  98 "{\n"
  99 "   compute_motion_vectors();\n"
 100 "   oColour = texture( uTexMain, aUv ) * uColour;\n"
 101 "}\n"
 102 ""},
 103 };
 104
 105 static GLuint _uniform_model_font_uMdl;
 106 static GLuint _uniform_model_font_uPv;
 107 static GLuint _uniform_model_font_uPvmPrev;
 108 static GLuint _uniform_model_font_uOffset;
 109 static GLuint _uniform_model_font_uTexMain;
 110 static GLuint _uniform_model_font_uColour;
 111 static void shader_model_font_uMdl(m4x3f m){
 112    glUniformMatrix4x3fv(_uniform_model_font_uMdl,1,GL_FALSE,(float*)m);
 113 }
 114 static void shader_model_font_uPv(m4x4f m){
 115    glUniformMatrix4fv(_uniform_model_font_uPv,1,GL_FALSE,(float*)m);
 116 }
 117 static void shader_model_font_uPvmPrev(m4x4f m){
 118    glUniformMatrix4fv(_uniform_model_font_uPvmPrev,1,GL_FALSE,(float*)m);
 119 }
 120 static void shader_model_font_uOffset(v4f v){
 121    glUniform4fv(_uniform_model_font_uOffset,1,v);
 122 }
 123 static void shader_model_font_uTexMain(int i){
 124    glUniform1i(_uniform_model_font_uTexMain,i);
 125 }
 126 static void shader_model_font_uColour(v4f v){
 127    glUniform4fv(_uniform_model_font_uColour,1,v);
 128 }
 129 static void shader_model_font_register(void){
 130    vg_shader_register( &_shader_model_font );
 131 }
 132 static void shader_model_font_use(void){ glUseProgram(_shader_model_font.id); }
 133 static void shader_model_font_link(void){
 134    _uniform_model_font_uMdl = glGetUniformLocation( _shader_model_font.id, "uMdl" );
 135    _uniform_model_font_uPv = glGetUniformLocation( _shader_model_font.id, "uPv" );
 136    _uniform_model_font_uPvmPrev = glGetUniformLocation( _shader_model_font.id, "uPvmPrev" );
 137    _uniform_model_font_uOffset = glGetUniformLocation( _shader_model_font.id, "uOffset" );
 138    _uniform_model_font_uTexMain = glGetUniformLocation( _shader_model_font.id, "uTexMain" );
 139    _uniform_model_font_uColour = glGetUniformLocation( _shader_model_font.id, "uColour" );
 140 }
 141 #endif /* SHADER_model_font_H */