| 0,0 → 1,509 |
|---|
| /* Display a cleared blue window. This demo has no dependencies on |
| * any utility code, just the graw interface and gallium. |
| */ |
| |
| #include "state_tracker/graw.h" |
| #include "pipe/p_screen.h" |
| #include "pipe/p_context.h" |
| #include "pipe/p_shader_tokens.h" |
| #include "pipe/p_state.h" |
| #include "pipe/p_defines.h" |
| |
| #include <stdio.h> /* for fread(), etc */ |
| |
| #include "util/u_inlines.h" |
| #include "util/u_memory.h" /* Offset() */ |
| #include "util/u_draw_quad.h" |
| #include "util/u_box.h" |
| |
| static const char *filename = NULL; |
| unsigned show_fps = 0; |
| |
| |
| static void usage(char *name) |
| { |
| fprintf(stderr, "usage: %s [ options ] shader_filename\n", name); |
| #ifndef _WIN32 |
| fprintf(stderr, "\n" ); |
| fprintf(stderr, "options:\n"); |
| fprintf(stderr, " -fps show frames per second\n"); |
| #endif |
| } |
| |
| |
| enum pipe_format formats[] = { |
| PIPE_FORMAT_RGBA8888_UNORM, |
| PIPE_FORMAT_BGRA8888_UNORM, |
| PIPE_FORMAT_NONE |
| }; |
| |
| static const int WIDTH = 250; |
| static const int HEIGHT = 250; |
| |
| static struct pipe_screen *screen = NULL; |
| static struct pipe_context *ctx = NULL; |
| static struct pipe_resource *rttex = NULL; |
| static struct pipe_resource *constbuf = NULL; |
| static struct pipe_surface *surf = NULL; |
| static struct pipe_sampler_view *sv = NULL; |
| static void *sampler = NULL; |
| static void *window = NULL; |
| static struct pipe_resource *samptex = NULL; |
| |
| struct vertex { |
| float position[4]; |
| float color[3]; |
| }; |
| |
| /* Draw a regular mesh |
| */ |
| #define MESH_SZ 16 |
| static struct vertex vertices[MESH_SZ * MESH_SZ]; |
| |
| static float constants[] = |
| { 0.4, 0, 0, 1, |
| 1, 1, 1, 1, |
| 2, 2, 2, 2, |
| 4, 8, 16, 32, |
| |
| 3, 0, 0, 0, |
| 0, .5, 0, 0, |
| 0, 0, 1, 0, |
| 0, 0, 0, 1, |
| |
| 1, 0, 0, 0.5, |
| 0, 1, 0, 0.5, |
| 0, 0, 1, 0, |
| 0, 0, 0, 1, |
| }; |
| |
| static void init_fs_constbuf( void ) |
| { |
| struct pipe_resource templat; |
| struct pipe_box box; |
| |
| templat.target = PIPE_BUFFER; |
| templat.format = PIPE_FORMAT_R8_UNORM; |
| templat.width0 = sizeof(constants); |
| templat.height0 = 1; |
| templat.depth0 = 1; |
| templat.array_size = 1; |
| templat.last_level = 0; |
| templat.nr_samples = 1; |
| templat.bind = PIPE_BIND_CONSTANT_BUFFER; |
| |
| constbuf = screen->resource_create(screen, |
| &templat); |
| if (constbuf == NULL) |
| exit(4); |
| |
| |
| u_box_2d(0,0,sizeof(constants),1, &box); |
| |
| ctx->transfer_inline_write(ctx, |
| constbuf, |
| 0, |
| PIPE_TRANSFER_WRITE, |
| &box, |
| constants, |
| sizeof constants, |
| sizeof constants); |
| |
| |
| pipe_set_constant_buffer(ctx, |
| PIPE_SHADER_VERTEX, 0, |
| constbuf); |
| } |
| |
| |
| static void set_viewport( float x, float y, |
| float width, float height, |
| float near, float far) |
| { |
| float z = far; |
| float half_width = (float)width / 2.0f; |
| float half_height = (float)height / 2.0f; |
| float half_depth = ((float)far - (float)near) / 2.0f; |
| struct pipe_viewport_state vp; |
| |
| vp.scale[0] = half_width; |
| vp.scale[1] = half_height; |
| vp.scale[2] = half_depth; |
| vp.scale[3] = 1.0f; |
| |
| vp.translate[0] = half_width + x; |
| vp.translate[1] = half_height + y; |
| vp.translate[2] = half_depth + z; |
| vp.translate[3] = 0.0f; |
| |
| ctx->set_viewport_states( ctx, 0, 1, &vp ); |
| } |
| |
| static void set_vertices( void ) |
| { |
| struct pipe_vertex_element ve[2]; |
| struct pipe_vertex_buffer vbuf; |
| void *handle; |
| int x,y; |
| |
| 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 = ctx->create_vertex_elements_state(ctx, 2, ve); |
| ctx->bind_vertex_elements_state(ctx, handle); |
| |
| for (x = 0; x < MESH_SZ; x++) { |
| for (y = 0; y < MESH_SZ; y++) { |
| int i = y * MESH_SZ + x; |
| vertices[i].position[0] = ((float)x)/MESH_SZ * 2.0 - 1.0; |
| vertices[i].position[1] = ((float)y)/MESH_SZ * 2.0 - 1.0; |
| vertices[i].position[2] = 0; |
| vertices[i].position[3] = 1.0; |
| |
| vertices[i].color[0] = .5; |
| vertices[i].color[1] = (float)x / (float)MESH_SZ; |
| vertices[i].color[2] = (float)y / (float)MESH_SZ; |
| } |
| } |
| |
| memset(&vbuf, 0, sizeof vbuf); |
| |
| vbuf.stride = sizeof( struct vertex ); |
| vbuf.buffer_offset = 0; |
| vbuf.buffer = pipe_buffer_create_with_data(ctx, |
| PIPE_BIND_VERTEX_BUFFER, |
| PIPE_USAGE_STATIC, |
| sizeof(vertices), |
| vertices); |
| |
| ctx->set_vertex_buffers(ctx, 0, 1, &vbuf); |
| } |
| |
| static void set_vertex_shader( void ) |
| { |
| FILE *f; |
| char buf[50000]; |
| void *handle; |
| int sz; |
| |
| if ((f = fopen(filename, "r")) == NULL) { |
| fprintf(stderr, "Couldn't open %s\n", filename); |
| exit(1); |
| } |
| |
| sz = fread(buf, 1, sizeof(buf), f); |
| if (!feof(f)) { |
| printf("file too long\n"); |
| exit(1); |
| } |
| printf("%.*s\n", sz, buf); |
| buf[sz] = 0; |
| |
| handle = graw_parse_vertex_shader(ctx, buf); |
| ctx->bind_vs_state(ctx, handle); |
| fclose(f); |
| } |
| |
| 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(ctx, text); |
| ctx->bind_fs_state(ctx, handle); |
| } |
| |
| |
| |
| static void draw( void ) |
| { |
| union pipe_color_union clear_color = { {.1,.3,.5,0} }; |
| |
| ctx->clear(ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0); |
| util_draw_arrays(ctx, PIPE_PRIM_POINTS, 0, Elements(vertices)); |
| ctx->flush(ctx, NULL, 0); |
| |
| graw_save_surface_to_file(ctx, surf, NULL); |
| |
| screen->flush_frontbuffer(screen, rttex, 0, 0, window); |
| } |
| |
| #define SIZE 16 |
| |
| static void init_tex( void ) |
| { |
| struct pipe_sampler_view sv_template; |
| struct pipe_sampler_state sampler_desc; |
| struct pipe_resource templat; |
| struct pipe_box box; |
| 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 |
| |
| templat.target = PIPE_TEXTURE_2D; |
| templat.format = PIPE_FORMAT_B8G8R8A8_UNORM; |
| templat.width0 = SIZE; |
| templat.height0 = SIZE; |
| templat.depth0 = 1; |
| templat.array_size = 1; |
| templat.last_level = 0; |
| templat.nr_samples = 1; |
| templat.bind = PIPE_BIND_SAMPLER_VIEW; |
| |
| |
| samptex = screen->resource_create(screen, |
| &templat); |
| if (samptex == NULL) |
| exit(4); |
| |
| u_box_2d(0,0,SIZE,SIZE, &box); |
| |
| ctx->transfer_inline_write(ctx, |
| samptex, |
| 0, |
| PIPE_TRANSFER_WRITE, |
| &box, |
| tex2d, |
| sizeof tex2d[0], |
| sizeof tex2d); |
| |
| /* Possibly read back & compare against original data: |
| */ |
| if (0) |
| { |
| struct pipe_transfer *t; |
| uint32_t *ptr; |
| ptr = pipe_transfer_map(ctx, samptex, |
| 0, 0, /* level, layer */ |
| PIPE_TRANSFER_READ, |
| 0, 0, SIZE, SIZE, &t); /* x, y, width, height */ |
| |
| if (memcmp(ptr, tex2d, sizeof tex2d) != 0) { |
| assert(0); |
| exit(9); |
| } |
| |
| ctx->transfer_unmap(ctx, t); |
| } |
| |
| memset(&sv_template, 0, sizeof sv_template); |
| sv_template.format = samptex->format; |
| sv_template.texture = samptex; |
| sv_template.swizzle_r = 0; |
| sv_template.swizzle_g = 1; |
| sv_template.swizzle_b = 2; |
| sv_template.swizzle_a = 3; |
| sv = ctx->create_sampler_view(ctx, samptex, &sv_template); |
| if (sv == NULL) |
| exit(5); |
| |
| ctx->set_fragment_sampler_views(ctx, 1, &sv); |
| |
| |
| memset(&sampler_desc, 0, sizeof sampler_desc); |
| sampler_desc.wrap_s = PIPE_TEX_WRAP_REPEAT; |
| sampler_desc.wrap_t = PIPE_TEX_WRAP_REPEAT; |
| sampler_desc.wrap_r = PIPE_TEX_WRAP_REPEAT; |
| sampler_desc.min_img_filter = PIPE_TEX_FILTER_NEAREST; |
| sampler_desc.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; |
| sampler_desc.mag_img_filter = PIPE_TEX_FILTER_NEAREST; |
| sampler_desc.compare_mode = PIPE_TEX_COMPARE_NONE; |
| sampler_desc.compare_func = 0; |
| sampler_desc.normalized_coords = 1; |
| sampler_desc.max_anisotropy = 0; |
| |
| sampler = ctx->create_sampler_state(ctx, &sampler_desc); |
| if (sampler == NULL) |
| exit(6); |
| |
| ctx->bind_fragment_sampler_states(ctx, 1, &sampler); |
| |
| } |
| |
| static void init( void ) |
| { |
| struct pipe_framebuffer_state fb; |
| struct pipe_resource templat; |
| struct pipe_surface surf_tmpl; |
| int i; |
| |
| /* It's hard to say whether window or screen should be created |
| * first. Different environments would prefer one or the other. |
| * |
| * Also, no easy way of querying supported formats if the screen |
| * cannot be created first. |
| */ |
| for (i = 0; formats[i] != PIPE_FORMAT_NONE; i++) { |
| screen = graw_create_window_and_screen(0, 0, 300, 300, |
| formats[i], |
| &window); |
| if (window && screen) |
| break; |
| } |
| if (!screen || !window) { |
| fprintf(stderr, "Unable to create window\n"); |
| exit(1); |
| } |
| |
| ctx = screen->context_create(screen, NULL); |
| if (ctx == NULL) |
| exit(3); |
| |
| templat.target = PIPE_TEXTURE_2D; |
| templat.format = formats[i]; |
| templat.width0 = WIDTH; |
| templat.height0 = HEIGHT; |
| templat.depth0 = 1; |
| templat.array_size = 1; |
| templat.last_level = 0; |
| templat.nr_samples = 1; |
| templat.bind = (PIPE_BIND_RENDER_TARGET | |
| PIPE_BIND_DISPLAY_TARGET); |
| |
| rttex = screen->resource_create(screen, |
| &templat); |
| if (rttex == NULL) |
| exit(4); |
| |
| surf_tmpl.format = templat.format; |
| surf_tmpl.u.tex.level = 0; |
| surf_tmpl.u.tex.first_layer = 0; |
| surf_tmpl.u.tex.last_layer = 0; |
| surf = ctx->create_surface(ctx, rttex, &surf_tmpl); |
| if (surf == NULL) |
| exit(5); |
| |
| memset(&fb, 0, sizeof fb); |
| fb.nr_cbufs = 1; |
| fb.width = WIDTH; |
| fb.height = HEIGHT; |
| fb.cbufs[0] = surf; |
| |
| ctx->set_framebuffer_state(ctx, &fb); |
| |
| { |
| struct pipe_blend_state blend; |
| void *handle; |
| memset(&blend, 0, sizeof blend); |
| blend.rt[0].colormask = PIPE_MASK_RGBA; |
| handle = ctx->create_blend_state(ctx, &blend); |
| ctx->bind_blend_state(ctx, handle); |
| } |
| |
| { |
| struct pipe_depth_stencil_alpha_state depthstencil; |
| void *handle; |
| memset(&depthstencil, 0, sizeof depthstencil); |
| handle = ctx->create_depth_stencil_alpha_state(ctx, &depthstencil); |
| ctx->bind_depth_stencil_alpha_state(ctx, handle); |
| } |
| |
| { |
| struct pipe_rasterizer_state rasterizer; |
| void *handle; |
| memset(&rasterizer, 0, sizeof rasterizer); |
| rasterizer.cull_face = PIPE_FACE_NONE; |
| rasterizer.point_size = 8.0; |
| rasterizer.half_pixel_center = 1; |
| rasterizer.bottom_edge_rule = 1; |
| rasterizer.depth_clip = 1; |
| handle = ctx->create_rasterizer_state(ctx, &rasterizer); |
| ctx->bind_rasterizer_state(ctx, handle); |
| } |
| |
| set_viewport(0, 0, WIDTH, HEIGHT, 30, 1000); |
| |
| init_tex(); |
| init_fs_constbuf(); |
| |
| 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; |
| } |
| if (strcmp(argv[i], "-fps") == 0) { |
| show_fps = 1; |
| i++; |
| } |
| else if (i == argc - 1) { |
| filename = argv[i]; |
| i++; |
| } |
| else { |
| usage(argv[0]); |
| exit(1); |
| } |
| } |
| |
| if (!filename) { |
| usage(argv[0]); |
| exit(1); |
| } |
| } |
| |
| int main( int argc, char *argv[] ) |
| { |
| args(argc,argv); |
| init(); |
| |
| graw_set_display_func( draw ); |
| graw_main_loop(); |
| return 0; |
| } |