1 /* Display a cleared blue window. This demo has no dependencies on
2 * any utility code, just the graw interface and gallium.
5 #include "state_tracker/graw.h"
6 #include "pipe/p_screen.h"
7 #include "pipe/p_context.h"
8 #include "pipe/p_shader_tokens.h"
9 #include "pipe/p_state.h"
10 #include "pipe/p_defines.h"
11 #include <stdio.h> /* for fread(), etc */
13 #include "util/u_inlines.h"
14 #include "util/u_memory.h" /* Offset() */
15 #include "util/u_draw_quad.h"
16 #include "util/u_box.h"
18 static const char *filename = NULL;
19 unsigned show_fps = 0;
22 static void usage(char *name)
24 fprintf(stderr, "usage: %s [ options ] shader_filename\n", name);
26 fprintf(stderr, "\n" );
27 fprintf(stderr, "options:\n");
28 fprintf(stderr, " -fps show frames per second\n");
33 enum pipe_format formats[] = {
34 PIPE_FORMAT_R8G8B8A8_UNORM,
35 PIPE_FORMAT_B8G8R8A8_UNORM,
39 static const int WIDTH = 250;
40 static const int HEIGHT = 250;
42 static struct pipe_screen *screen = NULL;
43 static struct pipe_context *ctx = NULL;
44 static struct pipe_resource *rttex = NULL;
45 static struct pipe_resource *constbuf1 = NULL;
46 static struct pipe_resource *constbuf2 = NULL;
47 static struct pipe_surface *surf = NULL;
48 static struct pipe_sampler_view *sv = NULL;
49 static void *sampler = NULL;
50 static void *window = NULL;
51 static struct pipe_resource *samptex = NULL;
59 /* Vertex data matches progs/fp/fp-tri.c, but flipped in Y dimension
60 * so that the final images are the same.
62 static struct vertex vertices[] =
64 { { 0.9, 0.9, 0.0, 1.0 },
68 { { 0.9, -0.9, 0.0, 1.0 },
72 { {-0.9, 0.0, 0.0, 1.0 },
77 static float constants1[] =
95 static float constants2[] =
112 static void init_fs_constbuf( void )
114 struct pipe_resource templat;
117 templat.target = PIPE_BUFFER;
118 templat.format = PIPE_FORMAT_R8_UNORM;
119 templat.width0 = sizeof(constants1);
122 templat.array_size = 1;
123 templat.last_level = 0;
124 templat.nr_samples = 1;
125 templat.bind = PIPE_BIND_CONSTANT_BUFFER;
127 constbuf1 = screen->resource_create(screen,
129 if (constbuf1 == NULL)
132 constbuf2 = screen->resource_create(screen,
134 if (constbuf2 == NULL)
139 u_box_2d(0,0,sizeof(constants1),1, &box);
141 ctx->transfer_inline_write(ctx,
151 ctx->set_constant_buffer(ctx,
152 PIPE_SHADER_FRAGMENT, 0,
156 u_box_2d(0,0,sizeof(constants2),1, &box);
158 ctx->transfer_inline_write(ctx,
168 ctx->set_constant_buffer(ctx,
169 PIPE_SHADER_FRAGMENT, 1,
175 static void set_viewport( float x, float y,
176 float width, float height,
177 float near, float far)
180 float half_width = (float)width / 2.0f;
181 float half_height = (float)height / 2.0f;
182 float half_depth = ((float)far - (float)near) / 2.0f;
183 struct pipe_viewport_state vp;
185 vp.scale[0] = half_width;
186 vp.scale[1] = half_height;
187 vp.scale[2] = half_depth;
190 vp.translate[0] = half_width + x;
191 vp.translate[1] = half_height + y;
192 vp.translate[2] = half_depth + z;
193 vp.translate[3] = 0.0f;
195 ctx->set_viewport_state( ctx, &vp );
198 static void set_vertices( void )
200 struct pipe_vertex_element ve[3];
201 struct pipe_vertex_buffer vbuf;
204 memset(ve, 0, sizeof ve);
206 ve[0].src_offset = Offset(struct vertex, position);
207 ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
208 ve[1].src_offset = Offset(struct vertex, color);
209 ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
210 ve[2].src_offset = Offset(struct vertex, texcoord);
211 ve[2].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
213 handle = ctx->create_vertex_elements_state(ctx, 3, ve);
214 ctx->bind_vertex_elements_state(ctx, handle);
217 vbuf.stride = sizeof( struct vertex );
218 vbuf.buffer_offset = 0;
219 vbuf.buffer = screen->user_buffer_create(screen,
222 PIPE_BIND_VERTEX_BUFFER);
224 ctx->set_vertex_buffers(ctx, 1, &vbuf);
227 static void set_vertex_shader( void )
235 "DCL OUT[0], POSITION\n"
236 "DCL OUT[1], COLOR[0]\n"
237 "DCL OUT[2], GENERIC[0]\n"
238 " MOV OUT[0], IN[0]\n"
239 " MOV OUT[1], IN[1]\n"
240 " MOV OUT[2], IN[2]\n"
243 handle = graw_parse_vertex_shader(ctx, text);
244 ctx->bind_vs_state(ctx, handle);
247 static void set_fragment_shader( const char *filename )
254 if ((f = fopen(filename, "r")) == NULL) {
255 fprintf(stderr, "Couldn't open %s\n", filename);
259 sz = fread(buf, 1, sizeof(buf), f);
261 printf("file too long\n");
264 printf("%.*s\n", sz, buf);
267 handle = graw_parse_fragment_shader(ctx, buf);
268 ctx->bind_fs_state(ctx, handle);
273 static void draw( void )
275 float clear_color[4] = {.1,.3,.5,0};
277 ctx->clear(ctx, PIPE_CLEAR_COLOR, clear_color, 0, 0);
278 util_draw_arrays(ctx, PIPE_PRIM_TRIANGLES, 0, 3);
279 ctx->flush(ctx, NULL);
281 graw_save_surface_to_file(ctx, surf, NULL);
283 screen->flush_frontbuffer(screen, rttex, 0, 0, window);
288 static void init_tex( void )
290 struct pipe_sampler_view sv_template;
291 struct pipe_sampler_state sampler_desc;
292 struct pipe_resource templat;
294 ubyte tex2d[SIZE][SIZE][4];
298 for (s = 0; s < SIZE; s++) {
299 for (t = 0; t < SIZE; t++) {
302 tex2d[t][s][0] = (x) ? 0 : 63;
303 tex2d[t][s][1] = (x) ? 0 : 128;
305 tex2d[t][s][3] = 0xff;
308 int x = ((s ^ t) >> 2) & 1;
309 tex2d[t][s][0] = s*255/(SIZE-1);
310 tex2d[t][s][1] = t*255/(SIZE-1);
311 tex2d[t][s][2] = (x) ? 0 : 128;
312 tex2d[t][s][3] = 0xff;
318 tex2d[0][0][1] = 255;
319 tex2d[0][0][2] = 255;
324 tex2d[0][1][2] = 255;
325 tex2d[0][1][3] = 255;
327 tex2d[1][0][0] = 255;
328 tex2d[1][0][1] = 255;
330 tex2d[1][0][3] = 255;
332 tex2d[1][1][0] = 255;
335 tex2d[1][1][3] = 255;
338 templat.target = PIPE_TEXTURE_2D;
339 templat.format = PIPE_FORMAT_B8G8R8A8_UNORM;
340 templat.width0 = SIZE;
341 templat.height0 = SIZE;
343 templat.array_size = 1;
344 templat.last_level = 0;
345 templat.nr_samples = 1;
346 templat.bind = PIPE_BIND_SAMPLER_VIEW;
349 samptex = screen->resource_create(screen,
354 u_box_2d(0,0,SIZE,SIZE, &box);
356 ctx->transfer_inline_write(ctx,
365 /* Possibly read back & compare against original data:
369 struct pipe_transfer *t;
371 t = pipe_get_transfer(ctx, samptex,
372 0, 0, /* level, layer */
374 0, 0, SIZE, SIZE); /* x, y, width, height */
376 ptr = ctx->transfer_map(ctx, t);
378 if (memcmp(ptr, tex2d, sizeof tex2d) != 0) {
383 ctx->transfer_unmap(ctx, t);
385 ctx->transfer_destroy(ctx, t);
388 memset(&sv_template, 0, sizeof sv_template);
389 sv_template.format = samptex->format;
390 sv_template.texture = samptex;
391 sv_template.swizzle_r = 0;
392 sv_template.swizzle_g = 1;
393 sv_template.swizzle_b = 2;
394 sv_template.swizzle_a = 3;
395 sv = ctx->create_sampler_view(ctx, samptex, &sv_template);
399 ctx->set_fragment_sampler_views(ctx, 1, &sv);
402 memset(&sampler_desc, 0, sizeof sampler_desc);
403 sampler_desc.wrap_s = PIPE_TEX_WRAP_REPEAT;
404 sampler_desc.wrap_t = PIPE_TEX_WRAP_REPEAT;
405 sampler_desc.wrap_r = PIPE_TEX_WRAP_REPEAT;
406 sampler_desc.min_img_filter = PIPE_TEX_FILTER_NEAREST;
407 sampler_desc.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
408 sampler_desc.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
409 sampler_desc.compare_mode = PIPE_TEX_COMPARE_NONE;
410 sampler_desc.compare_func = 0;
411 sampler_desc.normalized_coords = 1;
412 sampler_desc.max_anisotropy = 0;
414 sampler = ctx->create_sampler_state(ctx, &sampler_desc);
418 ctx->bind_fragment_sampler_states(ctx, 1, &sampler);
422 static void init( void )
424 struct pipe_framebuffer_state fb;
425 struct pipe_resource templat;
426 struct pipe_surface surf_tmpl;
429 /* It's hard to say whether window or screen should be created
430 * first. Different environments would prefer one or the other.
432 * Also, no easy way of querying supported formats if the screen
433 * cannot be created first.
435 for (i = 0; formats[i] != PIPE_FORMAT_NONE; i++) {
436 screen = graw_create_window_and_screen(0, 0, 300, 300,
439 if (window && screen)
442 if (!screen || !window) {
443 fprintf(stderr, "Unable to create window\n");
447 ctx = screen->context_create(screen, NULL);
451 templat.target = PIPE_TEXTURE_2D;
452 templat.format = formats[i];
453 templat.width0 = WIDTH;
454 templat.height0 = HEIGHT;
456 templat.array_size = 1;
457 templat.last_level = 0;
458 templat.nr_samples = 1;
459 templat.bind = (PIPE_BIND_RENDER_TARGET |
460 PIPE_BIND_DISPLAY_TARGET);
462 rttex = screen->resource_create(screen,
467 surf_tmpl.format = templat.format;
468 surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
469 surf_tmpl.u.tex.level = 0;
470 surf_tmpl.u.tex.first_layer = 0;
471 surf_tmpl.u.tex.last_layer = 0;
472 surf = ctx->create_surface(ctx, rttex, &surf_tmpl);
476 memset(&fb, 0, sizeof fb);
482 ctx->set_framebuffer_state(ctx, &fb);
485 struct pipe_blend_state blend;
487 memset(&blend, 0, sizeof blend);
488 blend.rt[0].colormask = PIPE_MASK_RGBA;
489 handle = ctx->create_blend_state(ctx, &blend);
490 ctx->bind_blend_state(ctx, handle);
494 struct pipe_depth_stencil_alpha_state depthstencil;
496 memset(&depthstencil, 0, sizeof depthstencil);
497 handle = ctx->create_depth_stencil_alpha_state(ctx, &depthstencil);
498 ctx->bind_depth_stencil_alpha_state(ctx, handle);
502 struct pipe_rasterizer_state rasterizer;
504 memset(&rasterizer, 0, sizeof rasterizer);
505 rasterizer.cull_face = PIPE_FACE_NONE;
506 rasterizer.gl_rasterization_rules = 1;
507 handle = ctx->create_rasterizer_state(ctx, &rasterizer);
508 ctx->bind_rasterizer_state(ctx, handle);
511 set_viewport(0, 0, WIDTH, HEIGHT, 30, 1000);
518 set_fragment_shader(filename);
521 static void args(int argc, char *argv[])
525 for (i = 1; i < argc;) {
526 if (graw_parse_args(&i, argc, argv)) {
529 if (strcmp(argv[i], "-fps") == 0) {
533 else if (i == argc - 1) {
549 int main( int argc, char *argv[] )
554 graw_set_display_func( draw );