shaders/model_gate_unlinked.h

   1 #ifndef SHADER_model_gate_unlinked_H
   2 #define SHADER_model_gate_unlinked_H
   3 static void shader_model_gate_unlinked_link(void);
   4 static void shader_model_gate_unlinked_register(void);
   5 static struct vg_shader _shader_model_gate_unlinked = {
   6    .name = "model_gate_unlinked",
   7    .link = shader_model_gate_unlinked_link,
   8    .vs =
   9 {
  10 .orig_file = "shaders/model.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 "layout (location=3) in vec4 a_colour;\n"
  16 "layout (location=4) in vec4 a_weights;\n"
  17 "layout (location=5) in ivec4 a_groups;\n"
  18 "\n"
  19 "#line       1        1 \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      9        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 .orig_file = "shaders/model_gate_unlinked.fs",
  68 .static_src =
  69 "out vec4 FragColor;\n"
  70 "\n"
  71 "uniform float uTime;\n"
  72 "uniform vec3 uCam;\n"
  73 "uniform vec4 uColour;\n"
  74 "\n"
  75 "in vec3 aNorm;\n"
  76 "in vec2 aUv;\n"
  77 "in vec3 aCo;\n"
  78 "\n"
  79 "#line       1        1 \n"
  80 "const float k_motion_lerp_amount = 0.01;\n"
  81 "\n"
  82 "#line      2        0 \n"
  83 "\n"
  84 "layout (location = 1) out vec2 oMotionVec;\n"
  85 "\n"
  86 "in vec3 aMotionVec0;\n"
  87 "in vec3 aMotionVec1;\n"
  88 "\n"
  89 "void compute_motion_vectors()\n"
  90 "{\n"
  91 "   // Write motion vectors\n"
  92 "   vec2 vmotion0 = aMotionVec0.xy / aMotionVec0.z;\n"
  93 "   vec2 vmotion1 = aMotionVec1.xy / aMotionVec1.z;\n"
  94 "\n"
  95 "   oMotionVec = (vmotion1-vmotion0) * (1.0/k_motion_lerp_amount);\n"
  96 "}\n"
  97 "\n"
  98 "#line     12        0 \n"
  99 "\n"
 100 "const int NOISE_LOOP = 3;\n"
 101 "vec3 digital_noise( uvec3 iuv ){\n"
 102 "   iuv *=uvec3(8,2524,7552);\n"
 103 "   for( int i=0; i<NOISE_LOOP; i++ )\n"
 104 "      iuv += (iuv.yzx<<2) ^ (iuv.yxz)+iuv.z;\n"
 105 "   return vec3(iuv)*(1.0/float(0xffffffffU));\n"
 106 "}\n"
 107 "\n"
 108 "vec2 rand_hash22( vec2 p ){\n"
 109 "   vec3 p3 = fract(vec3(p.xyx) * 213.8976123);\n"
 110 "   p3 += dot(p3, p3.yzx+19.19);\n"
 111 "   return fract(vec2((p3.x + p3.y)*p3.z, (p3.x+p3.z)*p3.y));\n"
 112 "}\n"
 113 "\n"
 114 "void main(){\n"
 115 "   compute_motion_vectors();\n"
 116 "\n"
 117 "   vec2 ssuv = gl_FragCoord.xy;\n"
 118 "   float grad = 1.0-aUv.y*0.1;\n"
 119 "   float opacity = rand_hash22( vec2(floor(aUv.y*100.0),floor(aCo.z*10.0+uTime*40.0)) ).r*grad;\n"
 120 "   \n"
 121 "   vec3 vDither = vec3( dot( vec2( 171.0, 231.0 ), ssuv) );\n"
 122 "   float dither = fract( vDither.g / 71.0 ) - 0.5;\n"
 123 "\n"
 124 "   if( opacity<0.9 )\n"
 125 "      discard;\n"
 126 "\n"
 127 "   FragColor = vec4(0.7,0.5,0.5,1.0);\n"
 128 "}\n"
 129 ""},
 130 };
 131
 132 static GLuint _uniform_model_gate_unlinked_uMdl;
 133 static GLuint _uniform_model_gate_unlinked_uPv;
 134 static GLuint _uniform_model_gate_unlinked_uPvmPrev;
 135 static GLuint _uniform_model_gate_unlinked_uTime;
 136 static GLuint _uniform_model_gate_unlinked_uCam;
 137 static GLuint _uniform_model_gate_unlinked_uColour;
 138 static void shader_model_gate_unlinked_uMdl(m4x3f m){
 139    glUniformMatrix4x3fv(_uniform_model_gate_unlinked_uMdl,1,GL_FALSE,(float*)m);
 140 }
 141 static void shader_model_gate_unlinked_uPv(m4x4f m){
 142    glUniformMatrix4fv(_uniform_model_gate_unlinked_uPv,1,GL_FALSE,(float*)m);
 143 }
 144 static void shader_model_gate_unlinked_uPvmPrev(m4x4f m){
 145    glUniformMatrix4fv(_uniform_model_gate_unlinked_uPvmPrev,1,GL_FALSE,(float*)m);
 146 }
 147 static void shader_model_gate_unlinked_uTime(float f){
 148    glUniform1f(_uniform_model_gate_unlinked_uTime,f);
 149 }
 150 static void shader_model_gate_unlinked_uCam(v3f v){
 151    glUniform3fv(_uniform_model_gate_unlinked_uCam,1,v);
 152 }
 153 static void shader_model_gate_unlinked_uColour(v4f v){
 154    glUniform4fv(_uniform_model_gate_unlinked_uColour,1,v);
 155 }
 156 static void shader_model_gate_unlinked_register(void){
 157    vg_shader_register( &_shader_model_gate_unlinked );
 158 }
 159 static void shader_model_gate_unlinked_use(void){ glUseProgram(_shader_model_gate_unlinked.id); }
 160 static void shader_model_gate_unlinked_link(void){
 161    _uniform_model_gate_unlinked_uMdl = glGetUniformLocation( _shader_model_gate_unlinked.id, "uMdl" );
 162    _uniform_model_gate_unlinked_uPv = glGetUniformLocation( _shader_model_gate_unlinked.id, "uPv" );
 163    _uniform_model_gate_unlinked_uPvmPrev = glGetUniformLocation( _shader_model_gate_unlinked.id, "uPvmPrev" );
 164    _uniform_model_gate_unlinked_uTime = glGetUniformLocation( _shader_model_gate_unlinked.id, "uTime" );
 165    _uniform_model_gate_unlinked_uCam = glGetUniformLocation( _shader_model_gate_unlinked.id, "uCam" );
 166    _uniform_model_gate_unlinked_uColour = glGetUniformLocation( _shader_model_gate_unlinked.id, "uColour" );
 167 }
 168 #endif /* SHADER_model_gate_unlinked_H */