| /* Display a cleared blue window. This demo has no dependencies on |
| * any utility code, just the graw interface and gallium. |
| */ |
| |
| #include "graw_util.h" |
| |
| static const int WIDTH = 300; |
| static const int HEIGHT = 300; |
| |
| static struct graw_info info; |
| |
| |
| static struct pipe_resource *texture = NULL; |
| static struct pipe_sampler_view *sv = NULL; |
| static void *sampler = NULL; |
| |
| struct vertex { |
| float position[4]; |
| float color[4]; |
| }; |
| |
| static struct vertex vertices[] = |
| { |
| { { 0.9, -0.9, 0.0, 1.0 }, |
| { 1, 0, 0, 1 } }, |
| |
| { { 0.9, 0.9, 0.0, 1.0 }, |
| { 1, 1, 0, 1 } }, |
| |
| { {-0.9, 0.9, 0.0, 1.0 }, |
| { 0, 1, 0, 1 } }, |
| |
| { {-0.9, -0.9, 0.0, 1.0 }, |
| { 0, 0, 0, 1 } }, |
| }; |
| |
| |
| |
| |
| static void set_vertices( void ) |
| { |
| struct pipe_vertex_element ve[2]; |
| struct pipe_vertex_buffer vbuf; |
| void *handle; |
| |
| memset(ve, 0, sizeof ve); |
| |
| ve[0].src_offset = Offset(struct vertex, position); |
| ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; |
| ve[1].src_offset = Offset(struct vertex, color); |
| ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; |
| |
| handle = info.ctx->create_vertex_elements_state(info.ctx, 2, ve); |
| info.ctx->bind_vertex_elements_state(info.ctx, handle); |
| |
| memset(&vbuf, 0, sizeof vbuf); |
| |
| vbuf.stride = sizeof( struct vertex ); |
| vbuf.buffer_offset = 0; |
| vbuf.buffer = pipe_buffer_create_with_data(info.ctx, |
| PIPE_BIND_VERTEX_BUFFER, |
| PIPE_USAGE_STATIC, |
| sizeof(vertices), |
| vertices); |
| |
| info.ctx->set_vertex_buffers(info.ctx, 0, 1, &vbuf); |
| } |
| |
| static void set_vertex_shader( void ) |
| { |
| void *handle; |
| const char *text = |
| "VERT\n" |
| "DCL IN[0]\n" |
| "DCL IN[1]\n" |
| "DCL OUT[0], POSITION\n" |
| "DCL OUT[1], GENERIC[0]\n" |
| " 0: MOV OUT[1], IN[1]\n" |
| " 1: MOV OUT[0], IN[0]\n" |
| " 2: END\n"; |
| |
| handle = graw_parse_vertex_shader(info.ctx, text); |
| info.ctx->bind_vs_state(info.ctx, handle); |
| } |
| |
| static void set_fragment_shader( void ) |
| { |
| void *handle; |
| const char *text = |
| "FRAG\n" |
| "DCL IN[0], GENERIC[0], PERSPECTIVE\n" |
| "DCL OUT[0], COLOR\n" |
| "DCL TEMP[0]\n" |
| "DCL SAMP[0]\n" |
| " 0: TXP TEMP[0], IN[0], SAMP[0], 2D\n" |
| " 1: MOV OUT[0], TEMP[0]\n" |
| " 2: END\n"; |
| |
| handle = graw_parse_fragment_shader(info.ctx, text); |
| info.ctx->bind_fs_state(info.ctx, handle); |
| } |
| |
| |
| static void draw( void ) |
| { |
| union pipe_color_union clear_color = { {.5,.5,.5,1} }; |
| |
| info.ctx->clear(info.ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0); |
| util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, 4); |
| info.ctx->flush(info.ctx, NULL); |
| |
| graw_save_surface_to_file(info.ctx, info.color_surf[0], NULL); |
| |
| graw_util_flush_front(&info); |
| } |
| |
| |
| #define SIZE 16 |
| |
| static void init_tex( void ) |
| { |
| ubyte tex2d[SIZE][SIZE][4]; |
| int s, t; |
| |
| #if (SIZE != 2) |
| for (s = 0; s < SIZE; s++) { |
| for (t = 0; t < SIZE; t++) { |
| if (0) { |
| int x = (s ^ t) & 1; |
| tex2d[t][s][0] = (x) ? 0 : 63; |
| tex2d[t][s][1] = (x) ? 0 : 128; |
| tex2d[t][s][2] = 0; |
| tex2d[t][s][3] = 0xff; |
| } |
| else { |
| int x = ((s ^ t) >> 2) & 1; |
| tex2d[t][s][0] = s*255/(SIZE-1); |
| tex2d[t][s][1] = t*255/(SIZE-1); |
| tex2d[t][s][2] = (x) ? 0 : 128; |
| tex2d[t][s][3] = 0xff; |
| } |
| } |
| } |
| #else |
| tex2d[0][0][0] = 0; |
| tex2d[0][0][1] = 255; |
| tex2d[0][0][2] = 255; |
| tex2d[0][0][3] = 0; |
| |
| tex2d[0][1][0] = 0; |
| tex2d[0][1][1] = 0; |
| tex2d[0][1][2] = 255; |
| tex2d[0][1][3] = 255; |
| |
| tex2d[1][0][0] = 255; |
| tex2d[1][0][1] = 255; |
| tex2d[1][0][2] = 0; |
| tex2d[1][0][3] = 255; |
| |
| tex2d[1][1][0] = 255; |
| tex2d[1][1][1] = 0; |
| tex2d[1][1][2] = 0; |
| tex2d[1][1][3] = 255; |
| #endif |
| |
| texture = graw_util_create_tex2d(&info, SIZE, SIZE, |
| PIPE_FORMAT_B8G8R8A8_UNORM, tex2d); |
| |
| sv = graw_util_create_simple_sampler_view(&info, texture); |
| info.ctx->set_fragment_sampler_views(info.ctx, 1, &sv); |
| |
| sampler = graw_util_create_simple_sampler(&info, |
| PIPE_TEX_WRAP_REPEAT, |
| PIPE_TEX_FILTER_NEAREST); |
| info.ctx->bind_fragment_sampler_states(info.ctx, 1, &sampler); |
| } |
| |
| |
| static void init( void ) |
| { |
| if (!graw_util_create_window(&info, WIDTH, HEIGHT, 1, FALSE)) |
| exit(1); |
| |
| graw_util_default_state(&info, FALSE); |
| |
| { |
| struct pipe_rasterizer_state rasterizer; |
| void *handle; |
| memset(&rasterizer, 0, sizeof rasterizer); |
| rasterizer.cull_face = PIPE_FACE_NONE; |
| rasterizer.gl_rasterization_rules = 1; |
| rasterizer.depth_clip = 1; |
| handle = info.ctx->create_rasterizer_state(info.ctx, &rasterizer); |
| info.ctx->bind_rasterizer_state(info.ctx, handle); |
| } |
| |
| graw_util_viewport(&info, 0, 0, WIDTH, HEIGHT, 30, 1000); |
| |
| init_tex(); |
| |
| set_vertices(); |
| set_vertex_shader(); |
| set_fragment_shader(); |
| } |
| |
| |
| static void args(int argc, char *argv[]) |
| { |
| int i; |
| |
| for (i = 1; i < argc;) { |
| if (graw_parse_args(&i, argc, argv)) { |
| continue; |
| } |
| exit(1); |
| } |
| } |
| |
| int main( int argc, char *argv[] ) |
| { |
| args(argc, argv); |
| init(); |
| |
| graw_set_display_func( draw ); |
| graw_main_loop(); |
| return 0; |
| } |