shaders/tile_main.h

   1 #ifndef SHADER_tile_main_H
   2 #define SHADER_tile_main_H
   3 static void shader_tile_main_link(void);
   4 static void shader_tile_main_register(void);
   5 static struct vg_shader _shader_tile_main = {
   6    .name = "tile_main",
   7    .link = shader_tile_main_link,
   8    .vs =
   9 {
  10 .orig_file = "shaders/tile_main.vs.glsl",
  11 .static_src =
  12 "layout (location=0) in vec2 a_co;\n"
  13 "uniform vec4 uOffset;  // Tile x/y, uv x/y\n"
  14 "uniform mat3 uPv;\n"
  15 "uniform mat2 uSubTransform;\n"
  16 "uniform float uVisibility;\n"
  17 "\n"
  18 "out vec4 aTexCoords;\n"
  19 "out vec2 aWorldCoords;\n"
  20 "\n"
  21 "vec2 hash22(vec2 p){\n"
  22 "       vec3 p3 = fract(vec3(p.xyx) * vec3(.1031, .1030, .0973));\n"
  23 "       p3 += dot(p3, p3.yzx+33.33);\n"
  24 "       return fract((p3.xx+p3.yz)*p3.zy);\n"
  25 "}\n"
  26 "\n"
  27 "void main(){\n"
  28 "       vec2 hash_val = hash22(uOffset.xy);\n"
  29 "       float scaling_factor = smoothstep( hash_val.x, hash_val.x+1.0, uVisibility );\n"
  30 "\n"
  31 "       // Vertex transform\n"
  32 "       vec2 subtransform = uSubTransform * (a_co-0.5) * scaling_factor + 0.5;\n"
  33 "       vec3 worldpos = vec3( subtransform + uOffset.xy, 1.0 );\n"
  34 "       gl_Position = vec4( uPv * worldpos, 1.0 );\n"
  35 "\n"
  36 "       // Create texture coords\n"
  37 "       vec2 random_offset = floor(hash_val * 4.0) * 0.25;\n"
  38 "       vec2 edge_safe_coords = a_co * 0.98 + 0.01;\n"
  39 "       aTexCoords = vec4((edge_safe_coords + uOffset.zw) * 0.25, \n"
  40 "                      edge_safe_coords * 0.25 + random_offset );\n"
  41 "       aWorldCoords = worldpos.xy;             \n"
  42 "}\n"
  43 ""},
  44    .fs =
  45 {
  46 .orig_file = "shaders/tile_main.fs.glsl",
  47 .static_src =
  48 "out vec4 FragColor;\n"
  49 "\n"
  50 "uniform sampler2D uTexGlyphs;\n"
  51 "uniform sampler2D uTexGlow;\n"
  52 "uniform sampler2D uTexWood;\n"
  53 "uniform float uGhost;\n"
  54 "uniform float uForeground;\n"
  55 "uniform vec2 uMousePos;\n"
  56 "uniform vec4 uColour;\n"
  57 "uniform vec3 uShadowing;\n"
  58 "uniform vec3 uGlowA;\n"
  59 "uniform vec3 uGlowB;\n"
  60 "\n"
  61 "in vec4 aTexCoords;\n"
  62 "in vec2 aWorldCoords;\n"
  63 "\n"
  64 "void main(){\n"
  65 "   vec4 glyph = texture( uTexGlyphs, aTexCoords.xy );\n"
  66 "   vec4 glyph_glow = texture( uTexGlow, aTexCoords.xy );\n"
  67 "   vec4 wood = texture( uTexWood, aTexCoords.zw );\n"
  68 "   vec4 wood_secondary = texture( uTexWood, aTexCoords.zw + 0.25 );\n"
  69 "   vec3 wood_comp = mix( wood_secondary.rgb * uShadowing, \n"
  70 "                         wood.rgb, clamp( glyph.b*2.0-1.0, 0.0, 1.0 ) );\n"
  71 "   \n"
  72 "   vec3 shadows = mix( uShadowing, vec3(1.0,1.0,1.0), glyph.r );\n"
  73 "   vec4 output_regular = vec4( wood_comp * shadows, \n"
  74 "                               mix( glyph.a, glyph.b, uForeground ) );\n"
  75 "   \n"
  76 "   float ghost_dist = clamp( 1.5-distance(uMousePos, aWorldCoords), 0.0, 1.0 );\n"
  77 "   vec4 output_ghost = vec4( 1.0, 1.0, 1.0, glyph.g*ghost_dist );\n"
  78 "   vec4 glow_comp = vec4(glyph_glow.b*uGlowA+glyph_glow.g*uGlowB,0.0);\n"
  79 "   \n"
  80 "   FragColor = mix( output_regular, output_ghost, uGhost )*uColour + glow_comp;\n"
  81 "}\n"
  82 ""},
  83 };
  84
  85 static GLuint _uniform_tile_main_uOffset;
  86 static GLuint _uniform_tile_main_uPv;
  87 static GLuint _uniform_tile_main_uSubTransform;
  88 static GLuint _uniform_tile_main_uVisibility;
  89 static GLuint _uniform_tile_main_uTexGlyphs;
  90 static GLuint _uniform_tile_main_uTexGlow;
  91 static GLuint _uniform_tile_main_uTexWood;
  92 static GLuint _uniform_tile_main_uGhost;
  93 static GLuint _uniform_tile_main_uForeground;
  94 static GLuint _uniform_tile_main_uMousePos;
  95 static GLuint _uniform_tile_main_uColour;
  96 static GLuint _uniform_tile_main_uShadowing;
  97 static GLuint _uniform_tile_main_uGlowA;
  98 static GLuint _uniform_tile_main_uGlowB;
  99 static void shader_tile_main_uOffset(v4f const v){
 100    glUniform4fv(_uniform_tile_main_uOffset,1,v);
 101 }
 102 static void shader_tile_main_uPv(m3x3f m){
 103    glUniformMatrix3fv(_uniform_tile_main_uPv,1,GL_FALSE,(float*)m);
 104 }
 105 static void shader_tile_main_uSubTransform(m2x2f m){
 106    glUniformMatrix2fv(_uniform_tile_main_uSubTransform,1,GL_FALSE,(float*)m);
 107 }
 108 static void shader_tile_main_uVisibility(float f){
 109    glUniform1f(_uniform_tile_main_uVisibility,f);
 110 }
 111 static void shader_tile_main_uTexGlyphs(int i){
 112    glUniform1i(_uniform_tile_main_uTexGlyphs,i);
 113 }
 114 static void shader_tile_main_uTexGlow(int i){
 115    glUniform1i(_uniform_tile_main_uTexGlow,i);
 116 }
 117 static void shader_tile_main_uTexWood(int i){
 118    glUniform1i(_uniform_tile_main_uTexWood,i);
 119 }
 120 static void shader_tile_main_uGhost(float f){
 121    glUniform1f(_uniform_tile_main_uGhost,f);
 122 }
 123 static void shader_tile_main_uForeground(float f){
 124    glUniform1f(_uniform_tile_main_uForeground,f);
 125 }
 126 static void shader_tile_main_uMousePos(v2f const v){
 127    glUniform2fv(_uniform_tile_main_uMousePos,1,v);
 128 }
 129 static void shader_tile_main_uColour(v4f const v){
 130    glUniform4fv(_uniform_tile_main_uColour,1,v);
 131 }
 132 static void shader_tile_main_uShadowing(v3f const v){
 133    glUniform3fv(_uniform_tile_main_uShadowing,1,v);
 134 }
 135 static void shader_tile_main_uGlowA(v3f const v){
 136    glUniform3fv(_uniform_tile_main_uGlowA,1,v);
 137 }
 138 static void shader_tile_main_uGlowB(v3f const v){
 139    glUniform3fv(_uniform_tile_main_uGlowB,1,v);
 140 }
 141 static void shader_tile_main_register(void){
 142    vg_shader_register( &_shader_tile_main );
 143 }
 144 static void shader_tile_main_use(void){ glUseProgram(_shader_tile_main.id); }
 145 static void shader_tile_main_link(void){
 146    _uniform_tile_main_uOffset = glGetUniformLocation( _shader_tile_main.id, "uOffset" );
 147    _uniform_tile_main_uPv = glGetUniformLocation( _shader_tile_main.id, "uPv" );
 148    _uniform_tile_main_uSubTransform = glGetUniformLocation( _shader_tile_main.id, "uSubTransform" );
 149    _uniform_tile_main_uVisibility = glGetUniformLocation( _shader_tile_main.id, "uVisibility" );
 150    _uniform_tile_main_uTexGlyphs = glGetUniformLocation( _shader_tile_main.id, "uTexGlyphs" );
 151    _uniform_tile_main_uTexGlow = glGetUniformLocation( _shader_tile_main.id, "uTexGlow" );
 152    _uniform_tile_main_uTexWood = glGetUniformLocation( _shader_tile_main.id, "uTexWood" );
 153    _uniform_tile_main_uGhost = glGetUniformLocation( _shader_tile_main.id, "uGhost" );
 154    _uniform_tile_main_uForeground = glGetUniformLocation( _shader_tile_main.id, "uForeground" );
 155    _uniform_tile_main_uMousePos = glGetUniformLocation( _shader_tile_main.id, "uMousePos" );
 156    _uniform_tile_main_uColour = glGetUniformLocation( _shader_tile_main.id, "uColour" );
 157    _uniform_tile_main_uShadowing = glGetUniformLocation( _shader_tile_main.id, "uShadowing" );
 158    _uniform_tile_main_uGlowA = glGetUniformLocation( _shader_tile_main.id, "uGlowA" );
 159    _uniform_tile_main_uGlowB = glGetUniformLocation( _shader_tile_main.id, "uGlowB" );
 160 }
 161 #endif /* SHADER_tile_main_H */