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_RGBA8888_UNORM
,
35 PIPE_FORMAT_BGRA8888_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_surface
*surf
= NULL
;
46 static struct pipe_sampler_view
*sv
= NULL
;
47 static void *sampler
= NULL
;
48 static void *window
= NULL
;
49 static struct pipe_resource
*samptex
= NULL
;
57 /* Vertex data matches progs/fp/fp-tri.c, but flipped in Y dimension
58 * so that the final images are the same.
60 static struct vertex vertices
[] =
62 { { 0.9, 0.9, 0.0, 1.0 },
66 { { 0.9, -0.9, 0.0, 1.0 },
70 { {-0.9, 0.0, 0.0, 1.0 },
75 static float constants1
[] =
93 static float constants2
[] =
110 static void init_fs_constbuf( void )
112 struct pipe_constant_buffer cb1
;
113 struct pipe_constant_buffer cb2
;
115 memset(&cb1
, 0, sizeof cb1
);
116 cb1
.buffer_size
= sizeof constants1
;
117 cb1
.user_buffer
= constants1
;
119 ctx
->set_constant_buffer(ctx
,
120 PIPE_SHADER_FRAGMENT
, 0,
123 memset(&cb2
, 0, sizeof cb2
);
124 cb2
.buffer_size
= sizeof constants2
;
125 cb2
.user_buffer
= constants2
;
127 ctx
->set_constant_buffer(ctx
,
128 PIPE_SHADER_FRAGMENT
, 1,
133 static void set_viewport( float x
, float y
,
134 float width
, float height
,
135 float near
, float far
)
138 float half_width
= (float)width
/ 2.0f
;
139 float half_height
= (float)height
/ 2.0f
;
140 float half_depth
= ((float)far
- (float)near
) / 2.0f
;
141 struct pipe_viewport_state vp
;
143 vp
.scale
[0] = half_width
;
144 vp
.scale
[1] = half_height
;
145 vp
.scale
[2] = half_depth
;
148 vp
.translate
[0] = half_width
+ x
;
149 vp
.translate
[1] = half_height
+ y
;
150 vp
.translate
[2] = half_depth
+ z
;
151 vp
.translate
[3] = 0.0f
;
153 ctx
->set_viewport_states( ctx
, 0, 1, &vp
);
156 static void set_vertices( void )
158 struct pipe_vertex_element ve
[3];
159 struct pipe_vertex_buffer vbuf
;
162 memset(ve
, 0, sizeof ve
);
164 ve
[0].src_offset
= Offset(struct vertex
, position
);
165 ve
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
166 ve
[1].src_offset
= Offset(struct vertex
, color
);
167 ve
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
168 ve
[2].src_offset
= Offset(struct vertex
, texcoord
);
169 ve
[2].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
171 handle
= ctx
->create_vertex_elements_state(ctx
, 3, ve
);
172 ctx
->bind_vertex_elements_state(ctx
, handle
);
174 memset(&vbuf
, 0, sizeof vbuf
);
176 vbuf
.stride
= sizeof( struct vertex
);
177 vbuf
.buffer_offset
= 0;
178 vbuf
.buffer
= pipe_buffer_create_with_data(ctx
,
179 PIPE_BIND_VERTEX_BUFFER
,
184 ctx
->set_vertex_buffers(ctx
, 0, 1, &vbuf
);
187 static void set_vertex_shader( void )
195 "DCL OUT[0], POSITION\n"
196 "DCL OUT[1], COLOR[0]\n"
197 "DCL OUT[2], GENERIC[0]\n"
198 " MOV OUT[0], IN[0]\n"
199 " MOV OUT[1], IN[1]\n"
200 " MOV OUT[2], IN[2]\n"
203 handle
= graw_parse_vertex_shader(ctx
, text
);
204 ctx
->bind_vs_state(ctx
, handle
);
207 static void set_fragment_shader( const char *filename
)
214 if ((f
= fopen(filename
, "r")) == NULL
) {
215 fprintf(stderr
, "Couldn't open %s\n", filename
);
219 sz
= fread(buf
, 1, sizeof(buf
), f
);
221 printf("file too long\n");
224 printf("%.*s\n", sz
, buf
);
227 handle
= graw_parse_fragment_shader(ctx
, buf
);
228 ctx
->bind_fs_state(ctx
, handle
);
233 static void draw( void )
235 union pipe_color_union clear_color
= { {.1,.3,.5,0} };
237 ctx
->clear(ctx
, PIPE_CLEAR_COLOR
, &clear_color
, 0, 0);
238 util_draw_arrays(ctx
, PIPE_PRIM_TRIANGLES
, 0, 3);
239 ctx
->flush(ctx
, NULL
, 0);
241 graw_save_surface_to_file(ctx
, surf
, NULL
);
243 screen
->flush_frontbuffer(screen
, rttex
, 0, 0, window
);
248 static void init_tex( void )
250 struct pipe_sampler_view sv_template
;
251 struct pipe_sampler_state sampler_desc
;
252 struct pipe_resource templat
;
254 ubyte tex2d
[SIZE
][SIZE
][4];
258 for (s
= 0; s
< SIZE
; s
++) {
259 for (t
= 0; t
< SIZE
; t
++) {
262 tex2d
[t
][s
][0] = (x
) ? 0 : 63;
263 tex2d
[t
][s
][1] = (x
) ? 0 : 128;
265 tex2d
[t
][s
][3] = 0xff;
268 int x
= ((s
^ t
) >> 2) & 1;
269 tex2d
[t
][s
][0] = s
*255/(SIZE
-1);
270 tex2d
[t
][s
][1] = t
*255/(SIZE
-1);
271 tex2d
[t
][s
][2] = (x
) ? 0 : 128;
272 tex2d
[t
][s
][3] = 0xff;
278 tex2d
[0][0][1] = 255;
279 tex2d
[0][0][2] = 255;
284 tex2d
[0][1][2] = 255;
285 tex2d
[0][1][3] = 255;
287 tex2d
[1][0][0] = 255;
288 tex2d
[1][0][1] = 255;
290 tex2d
[1][0][3] = 255;
292 tex2d
[1][1][0] = 255;
295 tex2d
[1][1][3] = 255;
298 templat
.target
= PIPE_TEXTURE_2D
;
299 templat
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
;
300 templat
.width0
= SIZE
;
301 templat
.height0
= SIZE
;
303 templat
.array_size
= 1;
304 templat
.last_level
= 0;
305 templat
.nr_samples
= 1;
306 templat
.bind
= PIPE_BIND_SAMPLER_VIEW
;
309 samptex
= screen
->resource_create(screen
,
314 u_box_2d(0,0,SIZE
,SIZE
, &box
);
316 ctx
->transfer_inline_write(ctx
,
325 /* Possibly read back & compare against original data:
329 struct pipe_transfer
*t
;
331 ptr
= pipe_transfer_map(ctx
, samptex
,
332 0, 0, /* level, layer */
334 0, 0, SIZE
, SIZE
, &t
); /* x, y, width, height */
336 if (memcmp(ptr
, tex2d
, sizeof tex2d
) != 0) {
341 ctx
->transfer_unmap(ctx
, t
);
344 memset(&sv_template
, 0, sizeof sv_template
);
345 sv_template
.format
= samptex
->format
;
346 sv_template
.texture
= samptex
;
347 sv_template
.swizzle_r
= 0;
348 sv_template
.swizzle_g
= 1;
349 sv_template
.swizzle_b
= 2;
350 sv_template
.swizzle_a
= 3;
351 sv
= ctx
->create_sampler_view(ctx
, samptex
, &sv_template
);
355 ctx
->set_fragment_sampler_views(ctx
, 1, &sv
);
358 memset(&sampler_desc
, 0, sizeof sampler_desc
);
359 sampler_desc
.wrap_s
= PIPE_TEX_WRAP_REPEAT
;
360 sampler_desc
.wrap_t
= PIPE_TEX_WRAP_REPEAT
;
361 sampler_desc
.wrap_r
= PIPE_TEX_WRAP_REPEAT
;
362 sampler_desc
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
363 sampler_desc
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
364 sampler_desc
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
365 sampler_desc
.compare_mode
= PIPE_TEX_COMPARE_NONE
;
366 sampler_desc
.compare_func
= 0;
367 sampler_desc
.normalized_coords
= 1;
368 sampler_desc
.max_anisotropy
= 0;
370 sampler
= ctx
->create_sampler_state(ctx
, &sampler_desc
);
374 ctx
->bind_sampler_states(ctx
, PIPE_SHADER_FRAGMENT
, 0, 1, &sampler
);
378 static void init( void )
380 struct pipe_framebuffer_state fb
;
381 struct pipe_resource templat
;
382 struct pipe_surface surf_tmpl
;
385 /* It's hard to say whether window or screen should be created
386 * first. Different environments would prefer one or the other.
388 * Also, no easy way of querying supported formats if the screen
389 * cannot be created first.
391 for (i
= 0; formats
[i
] != PIPE_FORMAT_NONE
; i
++) {
392 screen
= graw_create_window_and_screen(0, 0, 300, 300,
395 if (window
&& screen
)
398 if (!screen
|| !window
) {
399 fprintf(stderr
, "Unable to create window\n");
403 ctx
= screen
->context_create(screen
, NULL
);
407 templat
.target
= PIPE_TEXTURE_2D
;
408 templat
.format
= formats
[i
];
409 templat
.width0
= WIDTH
;
410 templat
.height0
= HEIGHT
;
412 templat
.array_size
= 1;
413 templat
.last_level
= 0;
414 templat
.nr_samples
= 1;
415 templat
.bind
= (PIPE_BIND_RENDER_TARGET
|
416 PIPE_BIND_DISPLAY_TARGET
);
418 rttex
= screen
->resource_create(screen
,
423 surf_tmpl
.format
= templat
.format
;
424 surf_tmpl
.u
.tex
.level
= 0;
425 surf_tmpl
.u
.tex
.first_layer
= 0;
426 surf_tmpl
.u
.tex
.last_layer
= 0;
427 surf
= ctx
->create_surface(ctx
, rttex
, &surf_tmpl
);
431 memset(&fb
, 0, sizeof fb
);
437 ctx
->set_framebuffer_state(ctx
, &fb
);
440 struct pipe_blend_state blend
;
442 memset(&blend
, 0, sizeof blend
);
443 blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
444 handle
= ctx
->create_blend_state(ctx
, &blend
);
445 ctx
->bind_blend_state(ctx
, handle
);
449 struct pipe_depth_stencil_alpha_state depthstencil
;
451 memset(&depthstencil
, 0, sizeof depthstencil
);
452 handle
= ctx
->create_depth_stencil_alpha_state(ctx
, &depthstencil
);
453 ctx
->bind_depth_stencil_alpha_state(ctx
, handle
);
457 struct pipe_rasterizer_state rasterizer
;
459 memset(&rasterizer
, 0, sizeof rasterizer
);
460 rasterizer
.cull_face
= PIPE_FACE_NONE
;
461 rasterizer
.half_pixel_center
= 1;
462 rasterizer
.bottom_edge_rule
= 1;
463 rasterizer
.depth_clip
= 1;
464 handle
= ctx
->create_rasterizer_state(ctx
, &rasterizer
);
465 ctx
->bind_rasterizer_state(ctx
, handle
);
468 set_viewport(0, 0, WIDTH
, HEIGHT
, 30, 1000);
475 set_fragment_shader(filename
);
478 static void args(int argc
, char *argv
[])
482 for (i
= 1; i
< argc
;) {
483 if (graw_parse_args(&i
, argc
, argv
)) {
486 if (strcmp(argv
[i
], "-fps") == 0) {
490 else if (i
== argc
- 1) {
506 int main( int argc
, char *argv
[] )
511 graw_set_display_func( draw
);