shaders/model_gate.h

   1 #ifndef SHADER_model_gate_H
   2 #define SHADER_model_gate_H
   3 static void shader_model_gate_link(void);
   4 static void shader_model_gate_register(void);
   5 static struct vg_shader _shader_model_gate = {
   6    .name = "model_gate",
   7    .link = shader_model_gate_link,
   8    .vs =
   9 {
  10 .orig_file = "shaders/model_gate.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 "uniform mat4 uPv;\n"
  17 "uniform mat4x3 uMdl;\n"
  18 "\n"
  19 "out vec3 aNorm;\n"
  20 "out vec2 aUv;\n"
  21 "out vec3 aCo;\n"
  22 "\n"
  23 "void main()\n"
  24 "{\n"
  25 "   vec3 world_pos = uMdl * vec4( a_co, 1.0 );\n"
  26 "   gl_Position = uPv * vec4(world_pos,1.0);\n"
  27 "\n"
  28 "   aNorm = a_norm;\n"
  29 "   aCo = world_pos;\n"
  30 "   aUv = a_uv;\n"
  31 "}\n"
  32 ""},
  33    .fs =
  34 {
  35 .orig_file = "shaders/model_gate_lq.fs",
  36 .static_src =
  37 "out vec4 FragColor;\n"
  38 "\n"
  39 "uniform float uTime;\n"
  40 "uniform vec3 uCam;\n"
  41 "uniform vec2 uInvRes;\n"
  42 "uniform vec4 uColour;\n"
  43 "\n"
  44 "in vec3 aNorm;\n"
  45 "in vec2 aUv;\n"
  46 "in vec3 aCo;\n"
  47 "\n"
  48 "void main()\n"
  49 "{\n"
  50 "   vec2 ssuv = gl_FragCoord.xy;\n"
  51 "   float opacity = 1.0-smoothstep(0.0,1.0,aUv.y+uColour.a);\n"
  52 "   \n"
  53 "   vec3 vDither = vec3( dot( vec2( 171.0, 231.0 ), ssuv) );\n"
  54 "   float dither = fract( vDither.g / 71.0 ) - 0.5;\n"
  55 "\n"
  56 "   if( opacity+dither<0.5 )\n"
  57 "      discard;\n"
  58 "\n"
  59 "   FragColor = uColour;\n"
  60 "}\n"
  61 ""},
  62 };
  63
  64 static GLuint _uniform_model_gate_uPv;
  65 static GLuint _uniform_model_gate_uMdl;
  66 static GLuint _uniform_model_gate_uTime;
  67 static GLuint _uniform_model_gate_uCam;
  68 static GLuint _uniform_model_gate_uInvRes;
  69 static GLuint _uniform_model_gate_uColour;
  70 static void shader_model_gate_uPv(m4x4f m){
  71    glUniformMatrix4fv(_uniform_model_gate_uPv,1,GL_FALSE,(float*)m);
  72 }
  73 static void shader_model_gate_uMdl(m4x3f m){
  74    glUniformMatrix4x3fv(_uniform_model_gate_uMdl,1,GL_FALSE,(float*)m);
  75 }
  76 static void shader_model_gate_uTime(float f){
  77    glUniform1f(_uniform_model_gate_uTime,f);
  78 }
  79 static void shader_model_gate_uCam(v3f v){
  80    glUniform3fv(_uniform_model_gate_uCam,1,v);
  81 }
  82 static void shader_model_gate_uInvRes(v2f v){
  83    glUniform2fv(_uniform_model_gate_uInvRes,1,v);
  84 }
  85 static void shader_model_gate_uColour(v4f v){
  86    glUniform4fv(_uniform_model_gate_uColour,1,v);
  87 }
  88 static void shader_model_gate_register(void){
  89    vg_shader_register( &_shader_model_gate );
  90 }
  91 static void shader_model_gate_use(void){ glUseProgram(_shader_model_gate.id); }
  92 static void shader_model_gate_link(void){
  93    _uniform_model_gate_uPv = glGetUniformLocation( _shader_model_gate.id, "uPv" );
  94    _uniform_model_gate_uMdl = glGetUniformLocation( _shader_model_gate.id, "uMdl" );
  95    _uniform_model_gate_uTime = glGetUniformLocation( _shader_model_gate.id, "uTime" );
  96    _uniform_model_gate_uCam = glGetUniformLocation( _shader_model_gate.id, "uCam" );
  97    _uniform_model_gate_uInvRes = glGetUniformLocation( _shader_model_gate.id, "uInvRes" );
  98    _uniform_model_gate_uColour = glGetUniformLocation( _shader_model_gate.id, "uColour" );
  99 }
 100 #endif /* SHADER_model_gate_H */