| /* Display a cleared blue window. This demo has no dependencies on |
| * any utility code, just the graw interface and gallium. |
| */ |
| |
| #include <stdio.h> |
| #include "graw_util.h" |
| |
| static struct graw_info info; |
| |
| static const int WIDTH = 300; |
| static const int HEIGHT = 300; |
| |
| |
| struct vertex { |
| float position[4]; |
| float color[4]; |
| }; |
| |
| static boolean FlatShade = FALSE; |
| |
| |
| static struct vertex vertices[3] = |
| { |
| { |
| { 0.0f, -0.9f, 0.0f, 1.0f }, |
| { 1.0f, 0.0f, 0.0f, 1.0f } |
| }, |
| { |
| { -0.9f, 0.9f, 0.0f, 1.0f }, |
| { 0.0f, 1.0f, 0.0f, 1.0f } |
| }, |
| { |
| { 0.9f, 0.9f, 0.0f, 1.0f }, |
| { 0.0f, 0.0f, 1.0f, 1.0f } |
| } |
| }; |
| |
| |
| 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, 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], COLOR\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], COLOR, LINEAR\n" |
| "DCL OUT[0], COLOR\n" |
| " 0: MOV OUT[0], IN[0]\n" |
| " 1: 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 = { {1,0,1,1} }; |
| |
| info.ctx->clear(info.ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0); |
| util_draw_arrays(info.ctx, PIPE_PRIM_TRIANGLES, 0, 3); |
| info.ctx->flush(info.ctx, NULL); |
| |
| graw_save_surface_to_file(info.ctx, info.color_surf[0], NULL); |
| |
| graw_util_flush_front(&info); |
| } |
| |
| |
| 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.flatshade = FlatShade; |
| 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); |
| |
| 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)) { |
| /* ok */ |
| } |
| else if (strcmp(argv[i], "-f") == 0) { |
| FlatShade = TRUE; |
| i++; |
| } |
| else { |
| printf("Invalid arg %s\n", argv[i]); |
| exit(1); |
| } |
| } |
| } |
| |
| int main( int argc, char *argv[] ) |
| { |
| args(argc, argv); |
| init(); |
| |
| graw_set_display_func( draw ); |
| graw_main_loop(); |
| return 0; |
| } |