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;
20 unsigned draw_strip
= 0;
23 static void usage(char *name
)
25 fprintf(stderr
, "usage: %s [ options ] shader_filename\n", name
);
27 fprintf(stderr
, "\n" );
28 fprintf(stderr
, "options:\n");
29 fprintf(stderr
, " -fps show frames per second\n");
30 fprintf(stderr
, " -strip renders a triangle strip\n");
35 enum pipe_format formats
[] = {
36 PIPE_FORMAT_R8G8B8A8_UNORM
,
37 PIPE_FORMAT_B8G8R8A8_UNORM
,
41 static const int WIDTH
= 250;
42 static const int HEIGHT
= 250;
44 static struct pipe_screen
*screen
= NULL
;
45 static struct pipe_context
*ctx
= NULL
;
46 static struct pipe_resource
*rttex
= NULL
;
47 static struct pipe_resource
*constbuf1
= NULL
;
48 static struct pipe_resource
*constbuf2
= NULL
;
49 static struct pipe_surface
*surf
= NULL
;
50 static struct pipe_sampler_view
*sv
= NULL
;
51 static void *sampler
= NULL
;
52 static void *window
= NULL
;
53 static struct pipe_resource
*samptex
= NULL
;
62 /* Vertex data matches progs/fp/fp-tri.c, but flipped in Y dimension
63 * so that the final images are the same.
65 static struct vertex vertices
[] =
67 { { 0.9, 0.9, 0.0, 1.0 },
73 { { 0.9, -0.9, 0.0, 1.0 },
79 { {-0.9, 0.0, 0.0, 1.0 },
86 static struct vertex vertices_strip
[] =
88 { { 0.9, 0.9, 0.0, 1.0 },
94 { { 0.9, -0.9, 0.0, 1.0 },
100 { {-0.9, 0.9, 0.0, 1.0 },
106 { {-0.9, -0.9, 0.0, 1.0 },
113 static float constants1
[] =
131 static float constants2
[] =
149 static void init_fs_constbuf( void )
151 struct pipe_resource templat
;
153 memset(&templat
, 0, sizeof(templat
));
154 templat
.target
= PIPE_BUFFER
;
155 templat
.format
= PIPE_FORMAT_R8_UNORM
;
156 templat
.width0
= sizeof(constants1
);
159 templat
.array_size
= 1;
160 templat
.last_level
= 0;
161 templat
.bind
= PIPE_BIND_CONSTANT_BUFFER
;
163 constbuf1
= screen
->resource_create(screen
, &templat
);
164 if (constbuf1
== NULL
)
166 constbuf2
= screen
->resource_create(screen
, &templat
);
167 if (constbuf2
== NULL
)
171 ctx
->buffer_subdata(ctx
, constbuf1
,
173 0, sizeof(constants1
), constants1
);
175 pipe_set_constant_buffer(ctx
,
176 PIPE_SHADER_GEOMETRY
, 0,
180 ctx
->buffer_subdata(ctx
, constbuf2
,
182 0, sizeof(constants2
), constants2
);
184 pipe_set_constant_buffer(ctx
,
185 PIPE_SHADER_GEOMETRY
, 1,
191 static void set_viewport( float x
, float y
,
192 float width
, float height
,
193 float zNear
, float zFar
)
196 float half_width
= (float)width
/ 2.0f
;
197 float half_height
= (float)height
/ 2.0f
;
198 float half_depth
= ((float)zFar
- (float)zNear
) / 2.0f
;
199 struct pipe_viewport_state vp
;
201 vp
.scale
[0] = half_width
;
202 vp
.scale
[1] = half_height
;
203 vp
.scale
[2] = half_depth
;
205 vp
.translate
[0] = half_width
+ x
;
206 vp
.translate
[1] = half_height
+ y
;
207 vp
.translate
[2] = half_depth
+ z
;
209 ctx
->set_viewport_states( ctx
, 0, 1, &vp
);
212 static void set_vertices( void )
214 struct pipe_vertex_element ve
[4];
215 struct pipe_vertex_buffer vbuf
;
218 memset(ve
, 0, sizeof ve
);
220 ve
[0].src_offset
= Offset(struct vertex
, position
);
221 ve
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
222 ve
[1].src_offset
= Offset(struct vertex
, color
);
223 ve
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
224 ve
[2].src_offset
= Offset(struct vertex
, texcoord
);
225 ve
[2].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
226 ve
[3].src_offset
= Offset(struct vertex
, generic
);
227 ve
[3].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
229 handle
= ctx
->create_vertex_elements_state(ctx
, 4, ve
);
230 ctx
->bind_vertex_elements_state(ctx
, handle
);
232 memset(&vbuf
, 0, sizeof vbuf
);
234 vbuf
.stride
= sizeof( struct vertex
);
235 vbuf
.buffer_offset
= 0;
237 vbuf
.buffer
.resource
= pipe_buffer_create_with_data(ctx
,
238 PIPE_BIND_VERTEX_BUFFER
,
240 sizeof(vertices_strip
),
243 vbuf
.buffer
.resource
= pipe_buffer_create_with_data(ctx
,
244 PIPE_BIND_VERTEX_BUFFER
,
250 ctx
->set_vertex_buffers(ctx
, 0, 1, &vbuf
);
253 static void set_vertex_shader( void )
262 "DCL OUT[0], POSITION\n"
263 "DCL OUT[1], COLOR[0]\n"
264 "DCL OUT[2], GENERIC[0]\n"
265 "DCL OUT[3], GENERIC[1]\n"
266 " MOV OUT[0], IN[0]\n"
267 " MOV OUT[1], IN[1]\n"
268 " MOV OUT[2], IN[2]\n"
269 " MOV OUT[3], IN[3]\n"
272 handle
= graw_parse_vertex_shader(ctx
, text
);
273 ctx
->bind_vs_state(ctx
, handle
);
276 static void set_fragment_shader( void )
281 "DCL IN[0], COLOR, LINEAR\n"
282 "DCL OUT[0], COLOR\n"
283 " 0: MOV OUT[0], IN[0]\n"
286 handle
= graw_parse_fragment_shader(ctx
, text
);
287 ctx
->bind_fs_state(ctx
, handle
);
291 static void set_geometry_shader( void )
298 if ((f
= fopen(filename
, "r")) == NULL
) {
299 fprintf(stderr
, "Couldn't open %s\n", filename
);
303 sz
= fread(buf
, 1, sizeof(buf
), f
);
305 printf("file too long\n");
308 printf("%.*s\n", sz
, buf
);
311 handle
= graw_parse_geometry_shader(ctx
, buf
);
312 ctx
->bind_gs_state(ctx
, handle
);
317 static void draw( void )
319 union pipe_color_union clear_color
= { {.1,.3,.5,0} };
321 ctx
->clear(ctx
, PIPE_CLEAR_COLOR
, &clear_color
, 0, 0);
323 util_draw_arrays(ctx
, PIPE_PRIM_TRIANGLE_STRIP
, 0, 4);
325 util_draw_arrays(ctx
, PIPE_PRIM_TRIANGLES
, 0, 3);
327 ctx
->flush(ctx
, NULL
, 0);
329 graw_save_surface_to_file(ctx
, surf
, NULL
);
331 screen
->flush_frontbuffer(screen
, rttex
, 0, 0, window
, NULL
);
336 static void init_tex( void )
338 struct pipe_sampler_view sv_template
;
339 struct pipe_sampler_state sampler_desc
;
340 struct pipe_resource templat
;
342 ubyte tex2d
[SIZE
][SIZE
][4];
346 for (s
= 0; s
< SIZE
; s
++) {
347 for (t
= 0; t
< SIZE
; t
++) {
350 tex2d
[t
][s
][0] = (x
) ? 0 : 63;
351 tex2d
[t
][s
][1] = (x
) ? 0 : 128;
353 tex2d
[t
][s
][3] = 0xff;
356 int x
= ((s
^ t
) >> 2) & 1;
357 tex2d
[t
][s
][0] = s
*255/(SIZE
-1);
358 tex2d
[t
][s
][1] = t
*255/(SIZE
-1);
359 tex2d
[t
][s
][2] = (x
) ? 0 : 128;
360 tex2d
[t
][s
][3] = 0xff;
366 tex2d
[0][0][1] = 255;
367 tex2d
[0][0][2] = 255;
372 tex2d
[0][1][2] = 255;
373 tex2d
[0][1][3] = 255;
375 tex2d
[1][0][0] = 255;
376 tex2d
[1][0][1] = 255;
378 tex2d
[1][0][3] = 255;
380 tex2d
[1][1][0] = 255;
383 tex2d
[1][1][3] = 255;
386 memset(&templat
, 0, sizeof(templat
));
387 templat
.target
= PIPE_TEXTURE_2D
;
388 templat
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
;
389 templat
.width0
= SIZE
;
390 templat
.height0
= SIZE
;
392 templat
.array_size
= 1;
393 templat
.last_level
= 0;
394 templat
.bind
= PIPE_BIND_SAMPLER_VIEW
;
397 samptex
= screen
->resource_create(screen
,
402 u_box_2d(0,0,SIZE
,SIZE
, &box
);
404 ctx
->texture_subdata(ctx
,
413 /* Possibly read back & compare against original data:
417 struct pipe_transfer
*t
;
419 ptr
= pipe_transfer_map(ctx
, samptex
,
420 0, 0, /* level, layer */
422 0, 0, SIZE
, SIZE
, &t
); /* x, y, width, height */
424 if (memcmp(ptr
, tex2d
, sizeof tex2d
) != 0) {
429 ctx
->transfer_unmap(ctx
, t
);
432 memset(&sv_template
, 0, sizeof sv_template
);
433 sv_template
.format
= samptex
->format
;
434 sv_template
.texture
= samptex
;
435 sv_template
.swizzle_r
= 0;
436 sv_template
.swizzle_g
= 1;
437 sv_template
.swizzle_b
= 2;
438 sv_template
.swizzle_a
= 3;
439 sv
= ctx
->create_sampler_view(ctx
, samptex
, &sv_template
);
443 ctx
->set_sampler_views(ctx
, PIPE_SHADER_FRAGMENT
, 0, 1, &sv
);
446 memset(&sampler_desc
, 0, sizeof sampler_desc
);
447 sampler_desc
.wrap_s
= PIPE_TEX_WRAP_REPEAT
;
448 sampler_desc
.wrap_t
= PIPE_TEX_WRAP_REPEAT
;
449 sampler_desc
.wrap_r
= PIPE_TEX_WRAP_REPEAT
;
450 sampler_desc
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
451 sampler_desc
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
452 sampler_desc
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
453 sampler_desc
.compare_mode
= PIPE_TEX_COMPARE_NONE
;
454 sampler_desc
.compare_func
= 0;
455 sampler_desc
.normalized_coords
= 1;
456 sampler_desc
.max_anisotropy
= 0;
458 sampler
= ctx
->create_sampler_state(ctx
, &sampler_desc
);
462 ctx
->bind_sampler_states(ctx
, PIPE_SHADER_FRAGMENT
, 0, 1, &sampler
);
466 static void init( void )
468 struct pipe_framebuffer_state fb
;
469 struct pipe_resource templat
;
470 struct pipe_surface surf_tmpl
;
473 /* It's hard to say whether window or screen should be created
474 * first. Different environments would prefer one or the other.
476 * Also, no easy way of querying supported formats if the screen
477 * cannot be created first.
479 for (i
= 0; formats
[i
] != PIPE_FORMAT_NONE
; i
++) {
480 screen
= graw_create_window_and_screen(0, 0, 300, 300,
483 if (window
&& screen
)
486 if (!screen
|| !window
) {
487 fprintf(stderr
, "Unable to create window\n");
491 ctx
= screen
->context_create(screen
, NULL
, 0);
495 memset(&templat
, 0, sizeof(templat
));
496 templat
.target
= PIPE_TEXTURE_2D
;
497 templat
.format
= formats
[i
];
498 templat
.width0
= WIDTH
;
499 templat
.height0
= HEIGHT
;
501 templat
.array_size
= 1;
502 templat
.last_level
= 0;
503 templat
.bind
= (PIPE_BIND_RENDER_TARGET
|
504 PIPE_BIND_DISPLAY_TARGET
);
506 rttex
= screen
->resource_create(screen
,
511 surf_tmpl
.format
= templat
.format
;
512 surf_tmpl
.u
.tex
.level
= 0;
513 surf_tmpl
.u
.tex
.first_layer
= 0;
514 surf_tmpl
.u
.tex
.last_layer
= 0;
515 surf
= ctx
->create_surface(ctx
, rttex
, &surf_tmpl
);
519 memset(&fb
, 0, sizeof fb
);
525 ctx
->set_framebuffer_state(ctx
, &fb
);
528 struct pipe_blend_state blend
;
530 memset(&blend
, 0, sizeof blend
);
531 blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
532 handle
= ctx
->create_blend_state(ctx
, &blend
);
533 ctx
->bind_blend_state(ctx
, handle
);
537 struct pipe_depth_stencil_alpha_state depthstencil
;
539 memset(&depthstencil
, 0, sizeof depthstencil
);
540 handle
= ctx
->create_depth_stencil_alpha_state(ctx
, &depthstencil
);
541 ctx
->bind_depth_stencil_alpha_state(ctx
, handle
);
545 struct pipe_rasterizer_state rasterizer
;
547 memset(&rasterizer
, 0, sizeof rasterizer
);
548 rasterizer
.cull_face
= PIPE_FACE_NONE
;
549 rasterizer
.half_pixel_center
= 1;
550 rasterizer
.bottom_edge_rule
= 1;
551 rasterizer
.depth_clip_near
= 1;
552 rasterizer
.depth_clip_far
= 1;
553 handle
= ctx
->create_rasterizer_state(ctx
, &rasterizer
);
554 ctx
->bind_rasterizer_state(ctx
, handle
);
557 set_viewport(0, 0, WIDTH
, HEIGHT
, 30, 1000);
564 set_fragment_shader();
565 set_geometry_shader();
568 static void args(int argc
, char *argv
[])
572 for (i
= 1; i
< argc
;) {
573 if (graw_parse_args(&i
, argc
, argv
)) {
576 if (strcmp(argv
[i
], "-fps") == 0) {
580 else if (strcmp(argv
[i
], "-strip") == 0) {
584 else if (i
== argc
- 1) {
600 int main( int argc
, char *argv
[] )
605 graw_set_display_func( draw
);