1 /* Test sRGB texturing. 2 */ 3 4 #include "graw_util.h" 5 6 7 static const int WIDTH = 600; 8 static const int HEIGHT = 300; 9 10 static struct graw_info info; 11 12 static struct pipe_resource *texture; 13 static struct pipe_sampler_view *linear_sv, *srgb_sv; 14 15 16 struct vertex { 17 float position[4]; 18 float color[4]; 19 }; 20 21 static struct vertex vertices1[] = 22 { 23 { { -0.1, -0.9, 0.0, 1.0 }, 24 { 1, 1, 0, 1 } }, 25 26 { { -0.1, 0.9, 0.0, 1.0 }, 27 { 1, 0, 0, 1 } }, 28 29 { {-0.9, 0.9, 0.0, 1.0 }, 30 { 0, 0, 0, 1 } }, 31 32 { {-0.9, -0.9, 0.0, 1.0 }, 33 { 0, 1, 0, 1 } }, 34 }; 35 36 37 static struct vertex vertices2[] = 38 { 39 { { 0.9, -0.9, 0.0, 1.0 }, 40 { 1, 1, 0, 1 } }, 41 42 { { 0.9, 0.9, 0.0, 1.0 }, 43 { 1, 0, 0, 1 } }, 44 45 { { 0.1, 0.9, 0.0, 1.0 }, 46 { 0, 0, 0, 1 } }, 47 48 { { 0.1, -0.9, 0.0, 1.0 }, 49 { 0, 1, 0, 1 } }, 50 }; 51 52 53 54 55 static void 56 set_vertices(struct vertex *verts, unsigned num_verts) 57 { 58 struct pipe_vertex_element ve[2]; 59 struct pipe_vertex_buffer vbuf; 60 void *handle; 61 62 memset(ve, 0, sizeof ve); 63 64 ve[0].src_offset = Offset(struct vertex, position); 65 ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 66 ve[1].src_offset = Offset(struct vertex, color); 67 ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 68 69 handle = info.ctx->create_vertex_elements_state(info.ctx, 2, ve); 70 info.ctx->bind_vertex_elements_state(info.ctx, handle); 71 72 73 vbuf.stride = sizeof(struct vertex); 74 vbuf.buffer_offset = 0; 75 vbuf.buffer = pipe_buffer_create_with_data(info.ctx, 76 PIPE_BIND_VERTEX_BUFFER, 77 PIPE_USAGE_STATIC, 78 num_verts * sizeof(struct vertex), 79 verts); 80 81 info.ctx->set_vertex_buffers(info.ctx, 1, &vbuf); 82 } 83 84 static void set_vertex_shader( void ) 85 { 86 void *handle; 87 const char *text = 88 "VERT\n" 89 "DCL IN[0]\n" 90 "DCL IN[1]\n" 91 "DCL OUT[0], POSITION\n" 92 "DCL OUT[1], GENERIC[0]\n" 93 " 0: MOV OUT[1], IN[1]\n" 94 " 1: MOV OUT[0], IN[0]\n" 95 " 2: END\n"; 96 97 handle = graw_parse_vertex_shader(info.ctx, text); 98 info.ctx->bind_vs_state(info.ctx, handle); 99 } 100 101 static void set_fragment_shader( void ) 102 { 103 void *handle; 104 const char *text = 105 "FRAG\n" 106 "DCL IN[0], GENERIC[0], PERSPECTIVE\n" 107 "DCL OUT[0], COLOR\n" 108 "DCL TEMP[0]\n" 109 "DCL SAMP[0]\n" 110 " 0: TXP TEMP[0], IN[0], SAMP[0], 2D\n" 111 " 1: MOV OUT[0], TEMP[0]\n" 112 " 2: END\n"; 113 114 handle = graw_parse_fragment_shader(info.ctx, text); 115 info.ctx->bind_fs_state(info.ctx, handle); 116 } 117 118 119 static void draw( void ) 120 { 121 union pipe_color_union clear_color; 122 123 clear_color.f[0] = 0.5; 124 clear_color.f[1] = 0.5; 125 clear_color.f[2] = 0.5; 126 clear_color.f[3] = 1.0; 127 128 info.ctx->clear(info.ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0); 129 130 info.ctx->set_fragment_sampler_views(info.ctx, 1, &linear_sv); 131 set_vertices(vertices1, 4); 132 util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, 4); 133 134 info.ctx->set_fragment_sampler_views(info.ctx, 1, &srgb_sv); 135 set_vertices(vertices2, 4); 136 util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, 4); 137 138 info.ctx->flush(info.ctx, NULL); 139 140 graw_util_flush_front(&info); 141 } 142 143 144 static void init_tex( void ) 145 { 146 #define SIZE 64 147 ubyte tex2d[SIZE][SIZE][4]; 148 int s, t; 149 150 for (s = 0; s < SIZE; s++) { 151 for (t = 0; t < SIZE; t++) { 152 tex2d[t][s][0] = 0; 153 tex2d[t][s][1] = s * 255 / SIZE; 154 tex2d[t][s][2] = t * 255 / SIZE; 155 tex2d[t][s][3] = 255; 156 } 157 } 158 159 texture = graw_util_create_tex2d(&info, SIZE, SIZE, 160 PIPE_FORMAT_B8G8R8A8_UNORM, tex2d); 161 162 { 163 void *sampler; 164 sampler = graw_util_create_simple_sampler(&info, 165 PIPE_TEX_WRAP_REPEAT, 166 PIPE_TEX_FILTER_NEAREST); 167 info.ctx->bind_fragment_sampler_states(info.ctx, 1, &sampler); 168 } 169 170 /* linear sampler view */ 171 { 172 struct pipe_sampler_view sv_temp; 173 memset(&sv_temp, 0, sizeof sv_temp); 174 sv_temp.format = PIPE_FORMAT_B8G8R8A8_UNORM; 175 sv_temp.texture = texture; 176 sv_temp.swizzle_r = PIPE_SWIZZLE_RED; 177 sv_temp.swizzle_g = PIPE_SWIZZLE_GREEN; 178 sv_temp.swizzle_b = PIPE_SWIZZLE_BLUE; 179 sv_temp.swizzle_a = PIPE_SWIZZLE_ALPHA; 180 linear_sv = info.ctx->create_sampler_view(info.ctx, texture, &sv_temp); 181 if (linear_sv == NULL) 182 exit(0); 183 } 184 185 /* srgb sampler view */ 186 { 187 struct pipe_sampler_view sv_temp; 188 memset(&sv_temp, 0, sizeof sv_temp); 189 sv_temp.format = PIPE_FORMAT_B8G8R8A8_SRGB; 190 sv_temp.texture = texture; 191 sv_temp.swizzle_r = PIPE_SWIZZLE_RED; 192 sv_temp.swizzle_g = PIPE_SWIZZLE_GREEN; 193 sv_temp.swizzle_b = PIPE_SWIZZLE_BLUE; 194 sv_temp.swizzle_a = PIPE_SWIZZLE_ALPHA; 195 srgb_sv = info.ctx->create_sampler_view(info.ctx, texture, &sv_temp); 196 if (srgb_sv == NULL) 197 exit(0); 198 } 199 #undef SIZE 200 } 201 202 static void init( void ) 203 { 204 if (!graw_util_create_window(&info, WIDTH, HEIGHT, 1, FALSE)) 205 exit(1); 206 207 graw_util_default_state(&info, FALSE); 208 209 graw_util_viewport(&info, 0, 0, WIDTH, HEIGHT, 30, 10000); 210 211 init_tex(); 212 213 set_vertex_shader(); 214 set_fragment_shader(); 215 } 216 217 218 int main( int argc, char *argv[] ) 219 { 220 init(); 221 222 graw_set_display_func( draw ); 223 graw_main_loop(); 224 return 0; 225 } 226
