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"
12 #include <stdio.h> /* for fread(), etc */
14 #include "util/u_inlines.h"
15 #include "util/u_memory.h" /* Offset() */
16 #include "util/u_draw_quad.h"
17 #include "util/u_box.h"
19 static const char *filename
= NULL
;
20 unsigned show_fps
= 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");
34 enum pipe_format formats
[] = {
35 PIPE_FORMAT_RGBA8888_UNORM
,
36 PIPE_FORMAT_BGRA8888_UNORM
,
40 static const int WIDTH
= 250;
41 static const int HEIGHT
= 250;
43 static struct pipe_screen
*screen
= NULL
;
44 static struct pipe_context
*ctx
= NULL
;
45 static struct pipe_resource
*rttex
= NULL
;
46 static struct pipe_resource
*constbuf
= 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
;
58 /* Draw a regular mesh
61 static struct vertex vertices
[MESH_SZ
* MESH_SZ
];
63 static float constants
[] =
80 static void init_fs_constbuf( void )
82 struct pipe_resource templat
;
85 memset(&templat
, 0, sizeof(templat
));
86 templat
.target
= PIPE_BUFFER
;
87 templat
.format
= PIPE_FORMAT_R8_UNORM
;
88 templat
.width0
= sizeof(constants
);
91 templat
.array_size
= 1;
92 templat
.last_level
= 0;
93 templat
.bind
= PIPE_BIND_CONSTANT_BUFFER
;
95 constbuf
= screen
->resource_create(screen
,
101 u_box_2d(0,0,sizeof(constants
),1, &box
);
103 ctx
->buffer_subdata(ctx
, constbuf
,
105 0, sizeof(constants
), constants
);
107 pipe_set_constant_buffer(ctx
,
108 PIPE_SHADER_VERTEX
, 0,
113 static void set_viewport( float x
, float y
,
114 float width
, float height
,
115 float zNear
, float zFar
)
118 float half_width
= (float)width
/ 2.0f
;
119 float half_height
= (float)height
/ 2.0f
;
120 float half_depth
= ((float)zFar
- (float)zNear
) / 2.0f
;
121 struct pipe_viewport_state vp
;
123 vp
.scale
[0] = half_width
;
124 vp
.scale
[1] = half_height
;
125 vp
.scale
[2] = half_depth
;
127 vp
.translate
[0] = half_width
+ x
;
128 vp
.translate
[1] = half_height
+ y
;
129 vp
.translate
[2] = half_depth
+ z
;
131 ctx
->set_viewport_states( ctx
, 0, 1, &vp
);
134 static void set_vertices( void )
136 struct pipe_vertex_element ve
[2];
137 struct pipe_vertex_buffer vbuf
;
141 memset(ve
, 0, sizeof ve
);
143 ve
[0].src_offset
= Offset(struct vertex
, position
);
144 ve
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
145 ve
[1].src_offset
= Offset(struct vertex
, color
);
146 ve
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
148 handle
= ctx
->create_vertex_elements_state(ctx
, 2, ve
);
149 ctx
->bind_vertex_elements_state(ctx
, handle
);
151 for (x
= 0; x
< MESH_SZ
; x
++) {
152 for (y
= 0; y
< MESH_SZ
; y
++) {
153 int i
= y
* MESH_SZ
+ x
;
154 vertices
[i
].position
[0] = ((float)x
)/MESH_SZ
* 2.0 - 1.0;
155 vertices
[i
].position
[1] = ((float)y
)/MESH_SZ
* 2.0 - 1.0;
156 vertices
[i
].position
[2] = 0;
157 vertices
[i
].position
[3] = 1.0;
159 vertices
[i
].color
[0] = .5;
160 vertices
[i
].color
[1] = (float)x
/ (float)MESH_SZ
;
161 vertices
[i
].color
[2] = (float)y
/ (float)MESH_SZ
;
165 memset(&vbuf
, 0, sizeof vbuf
);
167 vbuf
.stride
= sizeof( struct vertex
);
168 vbuf
.buffer_offset
= 0;
169 vbuf
.buffer
.resource
= pipe_buffer_create_with_data(ctx
,
170 PIPE_BIND_VERTEX_BUFFER
,
175 ctx
->set_vertex_buffers(ctx
, 0, 1, &vbuf
);
178 static void set_vertex_shader( void )
185 if ((f
= fopen(filename
, "r")) == NULL
) {
186 fprintf(stderr
, "Couldn't open %s\n", filename
);
190 sz
= fread(buf
, 1, sizeof(buf
), f
);
192 printf("file too long\n");
195 printf("%.*s\n", sz
, buf
);
198 handle
= graw_parse_vertex_shader(ctx
, buf
);
199 ctx
->bind_vs_state(ctx
, handle
);
203 static void set_fragment_shader( void )
208 "DCL IN[0], COLOR, LINEAR\n"
209 "DCL OUT[0], COLOR\n"
210 " 0: MOV OUT[0], IN[0]\n"
213 handle
= graw_parse_fragment_shader(ctx
, text
);
214 ctx
->bind_fs_state(ctx
, handle
);
219 static void draw( void )
221 union pipe_color_union clear_color
= { {.1,.3,.5,0} };
223 ctx
->clear(ctx
, PIPE_CLEAR_COLOR
, &clear_color
, 0, 0);
224 util_draw_arrays(ctx
, PIPE_PRIM_POINTS
, 0, ARRAY_SIZE(vertices
));
225 ctx
->flush(ctx
, NULL
, 0);
227 graw_save_surface_to_file(ctx
, surf
, NULL
);
229 screen
->flush_frontbuffer(screen
, rttex
, 0, 0, window
, NULL
);
234 static void init_tex( void )
236 struct pipe_sampler_view sv_template
;
237 struct pipe_sampler_state sampler_desc
;
238 struct pipe_resource templat
;
240 ubyte tex2d
[SIZE
][SIZE
][4];
244 for (s
= 0; s
< SIZE
; s
++) {
245 for (t
= 0; t
< SIZE
; t
++) {
248 tex2d
[t
][s
][0] = (x
) ? 0 : 63;
249 tex2d
[t
][s
][1] = (x
) ? 0 : 128;
251 tex2d
[t
][s
][3] = 0xff;
254 int x
= ((s
^ t
) >> 2) & 1;
255 tex2d
[t
][s
][0] = s
*255/(SIZE
-1);
256 tex2d
[t
][s
][1] = t
*255/(SIZE
-1);
257 tex2d
[t
][s
][2] = (x
) ? 0 : 128;
258 tex2d
[t
][s
][3] = 0xff;
264 tex2d
[0][0][1] = 255;
265 tex2d
[0][0][2] = 255;
270 tex2d
[0][1][2] = 255;
271 tex2d
[0][1][3] = 255;
273 tex2d
[1][0][0] = 255;
274 tex2d
[1][0][1] = 255;
276 tex2d
[1][0][3] = 255;
278 tex2d
[1][1][0] = 255;
281 tex2d
[1][1][3] = 255;
284 memset(&templat
, 0, sizeof(templat
));
285 templat
.target
= PIPE_TEXTURE_2D
;
286 templat
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
;
287 templat
.width0
= SIZE
;
288 templat
.height0
= SIZE
;
290 templat
.array_size
= 1;
291 templat
.last_level
= 0;
292 templat
.bind
= PIPE_BIND_SAMPLER_VIEW
;
295 samptex
= screen
->resource_create(screen
,
300 u_box_2d(0,0,SIZE
,SIZE
, &box
);
302 ctx
->texture_subdata(ctx
,
311 /* Possibly read back & compare against original data:
315 struct pipe_transfer
*t
;
317 ptr
= pipe_transfer_map(ctx
, samptex
,
318 0, 0, /* level, layer */
320 0, 0, SIZE
, SIZE
, &t
); /* x, y, width, height */
322 if (memcmp(ptr
, tex2d
, sizeof tex2d
) != 0) {
327 ctx
->transfer_unmap(ctx
, t
);
330 memset(&sv_template
, 0, sizeof sv_template
);
331 sv_template
.format
= samptex
->format
;
332 sv_template
.texture
= samptex
;
333 sv_template
.swizzle_r
= 0;
334 sv_template
.swizzle_g
= 1;
335 sv_template
.swizzle_b
= 2;
336 sv_template
.swizzle_a
= 3;
337 sv
= ctx
->create_sampler_view(ctx
, samptex
, &sv_template
);
341 ctx
->set_sampler_views(ctx
, PIPE_SHADER_FRAGMENT
, 0, 1, &sv
);
344 memset(&sampler_desc
, 0, sizeof sampler_desc
);
345 sampler_desc
.wrap_s
= PIPE_TEX_WRAP_REPEAT
;
346 sampler_desc
.wrap_t
= PIPE_TEX_WRAP_REPEAT
;
347 sampler_desc
.wrap_r
= PIPE_TEX_WRAP_REPEAT
;
348 sampler_desc
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
349 sampler_desc
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
350 sampler_desc
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
351 sampler_desc
.compare_mode
= PIPE_TEX_COMPARE_NONE
;
352 sampler_desc
.compare_func
= 0;
353 sampler_desc
.normalized_coords
= 1;
354 sampler_desc
.max_anisotropy
= 0;
356 sampler
= ctx
->create_sampler_state(ctx
, &sampler_desc
);
360 ctx
->bind_sampler_states(ctx
, PIPE_SHADER_FRAGMENT
, 0, 1, &sampler
);
364 static void init( void )
366 struct pipe_framebuffer_state fb
;
367 struct pipe_resource templat
;
368 struct pipe_surface surf_tmpl
;
371 /* It's hard to say whether window or screen should be created
372 * first. Different environments would prefer one or the other.
374 * Also, no easy way of querying supported formats if the screen
375 * cannot be created first.
377 for (i
= 0; formats
[i
] != PIPE_FORMAT_NONE
; i
++) {
378 screen
= graw_create_window_and_screen(0, 0, 300, 300,
381 if (window
&& screen
)
384 if (!screen
|| !window
) {
385 fprintf(stderr
, "Unable to create window\n");
389 ctx
= screen
->context_create(screen
, NULL
, 0);
393 memset(&templat
, 0, sizeof(templat
));
394 templat
.target
= PIPE_TEXTURE_2D
;
395 templat
.format
= formats
[i
];
396 templat
.width0
= WIDTH
;
397 templat
.height0
= HEIGHT
;
399 templat
.array_size
= 1;
400 templat
.last_level
= 0;
401 templat
.bind
= (PIPE_BIND_RENDER_TARGET
|
402 PIPE_BIND_DISPLAY_TARGET
);
404 rttex
= screen
->resource_create(screen
,
409 surf_tmpl
.format
= templat
.format
;
410 surf_tmpl
.u
.tex
.level
= 0;
411 surf_tmpl
.u
.tex
.first_layer
= 0;
412 surf_tmpl
.u
.tex
.last_layer
= 0;
413 surf
= ctx
->create_surface(ctx
, rttex
, &surf_tmpl
);
417 memset(&fb
, 0, sizeof fb
);
423 ctx
->set_framebuffer_state(ctx
, &fb
);
426 struct pipe_blend_state blend
;
428 memset(&blend
, 0, sizeof blend
);
429 blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
430 handle
= ctx
->create_blend_state(ctx
, &blend
);
431 ctx
->bind_blend_state(ctx
, handle
);
435 struct pipe_depth_stencil_alpha_state depthstencil
;
437 memset(&depthstencil
, 0, sizeof depthstencil
);
438 handle
= ctx
->create_depth_stencil_alpha_state(ctx
, &depthstencil
);
439 ctx
->bind_depth_stencil_alpha_state(ctx
, handle
);
443 struct pipe_rasterizer_state rasterizer
;
445 memset(&rasterizer
, 0, sizeof rasterizer
);
446 rasterizer
.cull_face
= PIPE_FACE_NONE
;
447 rasterizer
.point_size
= 8.0;
448 rasterizer
.half_pixel_center
= 1;
449 rasterizer
.bottom_edge_rule
= 1;
450 rasterizer
.depth_clip_near
= 1;
451 rasterizer
.depth_clip_far
= 1;
452 handle
= ctx
->create_rasterizer_state(ctx
, &rasterizer
);
453 ctx
->bind_rasterizer_state(ctx
, handle
);
456 set_viewport(0, 0, WIDTH
, HEIGHT
, 30, 1000);
463 set_fragment_shader();
466 static void args(int argc
, char *argv
[])
470 for (i
= 1; i
< argc
;) {
471 if (graw_parse_args(&i
, argc
, argv
)) {
474 if (strcmp(argv
[i
], "-fps") == 0) {
478 else if (i
== argc
- 1) {
494 int main( int argc
, char *argv
[] )
499 graw_set_display_func( draw
);