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 "util/u_debug.h" /* debug_dump_surface_bmp() */
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"
20 enum pipe_format formats
[] = {
21 PIPE_FORMAT_R8G8B8A8_UNORM
,
22 PIPE_FORMAT_B8G8R8A8_UNORM
,
26 static const int WIDTH
= 300;
27 static const int HEIGHT
= 300;
29 static struct pipe_screen
*screen
= NULL
;
30 static struct pipe_context
*ctx
= NULL
;
31 static struct pipe_resource
*rttex
= NULL
;
32 static struct pipe_resource
*samptex
= NULL
;
33 static struct pipe_surface
*surf
= NULL
;
34 static struct pipe_sampler_view
*sv
= NULL
;
35 static void *sampler
= NULL
;
36 static void *window
= NULL
;
43 static struct vertex vertices
[] =
45 { { 0.9, -0.9, 0.0, 1.0 },
48 { { 0.9, 0.9, 0.0, 1.0 },
51 { {-0.9, 0.9, 0.0, 1.0 },
54 { {-0.9, -0.9, 0.0, 1.0 },
61 static void set_viewport( float x
, float y
,
62 float width
, float height
,
63 float near
, float far
)
66 float half_width
= (float)width
/ 2.0f
;
67 float half_height
= (float)height
/ 2.0f
;
68 float half_depth
= ((float)far
- (float)near
) / 2.0f
;
69 struct pipe_viewport_state vp
;
71 vp
.scale
[0] = half_width
;
72 vp
.scale
[1] = half_height
;
73 vp
.scale
[2] = half_depth
;
76 vp
.translate
[0] = half_width
+ x
;
77 vp
.translate
[1] = half_height
+ y
;
78 vp
.translate
[2] = half_depth
+ z
;
79 vp
.translate
[3] = 0.0f
;
81 ctx
->set_viewport_state( ctx
, &vp
);
84 static void set_vertices( void )
86 struct pipe_vertex_element ve
[2];
87 struct pipe_vertex_buffer vbuf
;
90 memset(ve
, 0, sizeof ve
);
92 ve
[0].src_offset
= Offset(struct vertex
, position
);
93 ve
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
94 ve
[1].src_offset
= Offset(struct vertex
, color
);
95 ve
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
97 handle
= ctx
->create_vertex_elements_state(ctx
, 2, ve
);
98 ctx
->bind_vertex_elements_state(ctx
, handle
);
101 vbuf
.stride
= sizeof( struct vertex
);
102 vbuf
.buffer_offset
= 0;
103 vbuf
.buffer
= screen
->user_buffer_create(screen
,
106 PIPE_BIND_VERTEX_BUFFER
);
108 ctx
->set_vertex_buffers(ctx
, 1, &vbuf
);
111 static void set_vertex_shader( void )
118 "DCL OUT[0], POSITION\n"
119 "DCL OUT[1], GENERIC[0]\n"
120 " 0: MOV OUT[1], IN[1]\n"
121 " 1: MOV OUT[0], IN[0]\n"
124 handle
= graw_parse_vertex_shader(ctx
, text
);
125 ctx
->bind_vs_state(ctx
, handle
);
128 static void set_fragment_shader( void )
133 "DCL IN[0], GENERIC[0], PERSPECTIVE\n"
134 "DCL OUT[0], COLOR\n"
137 "DCL RES[0], 2D, FLOAT\n"
138 " 0: SAMPLE TEMP[0], IN[0], RES[0], SAMP[0]\n"
139 " 1: MOV OUT[0], TEMP[0]\n"
142 handle
= graw_parse_fragment_shader(ctx
, text
);
143 ctx
->bind_fs_state(ctx
, handle
);
147 static void draw( void )
149 union pipe_color_union clear_color
= { {.5,.5,.5,1} };
151 ctx
->clear(ctx
, PIPE_CLEAR_COLOR
, &clear_color
, 0, 0);
152 util_draw_arrays(ctx
, PIPE_PRIM_QUADS
, 0, 4);
153 ctx
->flush(ctx
, NULL
);
155 graw_save_surface_to_file(ctx
, surf
, NULL
);
157 screen
->flush_frontbuffer(screen
, rttex
, 0, 0, window
);
162 static void init_tex( void )
164 struct pipe_sampler_view sv_template
;
165 struct pipe_sampler_state sampler_desc
;
166 struct pipe_resource templat
;
168 ubyte tex2d
[SIZE
][SIZE
][4];
172 for (s
= 0; s
< SIZE
; s
++) {
173 for (t
= 0; t
< SIZE
; t
++) {
176 tex2d
[t
][s
][0] = (x
) ? 0 : 63;
177 tex2d
[t
][s
][1] = (x
) ? 0 : 128;
179 tex2d
[t
][s
][3] = 0xff;
182 int x
= ((s
^ t
) >> 2) & 1;
183 tex2d
[t
][s
][0] = s
*255/(SIZE
-1);
184 tex2d
[t
][s
][1] = t
*255/(SIZE
-1);
185 tex2d
[t
][s
][2] = (x
) ? 0 : 128;
186 tex2d
[t
][s
][3] = 0xff;
192 tex2d
[0][0][1] = 255;
193 tex2d
[0][0][2] = 255;
198 tex2d
[0][1][2] = 255;
199 tex2d
[0][1][3] = 255;
201 tex2d
[1][0][0] = 255;
202 tex2d
[1][0][1] = 255;
204 tex2d
[1][0][3] = 255;
206 tex2d
[1][1][0] = 255;
209 tex2d
[1][1][3] = 255;
212 templat
.target
= PIPE_TEXTURE_2D
;
213 templat
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
;
214 templat
.width0
= SIZE
;
215 templat
.height0
= SIZE
;
217 templat
.last_level
= 0;
218 templat
.nr_samples
= 1;
219 templat
.bind
= PIPE_BIND_SAMPLER_VIEW
;
222 samptex
= screen
->resource_create(screen
,
227 u_box_2d(0,0,SIZE
,SIZE
, &box
);
229 ctx
->transfer_inline_write(ctx
,
238 /* Possibly read back & compare against original data:
242 struct pipe_transfer
*t
;
244 t
= pipe_get_transfer(ctx
, samptex
,
245 0, 0, /* level, layer */
247 0, 0, SIZE
, SIZE
); /* x, y, width, height */
249 ptr
= ctx
->transfer_map(ctx
, t
);
251 if (memcmp(ptr
, tex2d
, sizeof tex2d
) != 0) {
256 ctx
->transfer_unmap(ctx
, t
);
258 ctx
->transfer_destroy(ctx
, t
);
261 memset(&sv_template
, 0, sizeof sv_template
);
262 sv_template
.format
= samptex
->format
;
263 sv_template
.texture
= samptex
;
264 sv_template
.swizzle_r
= 0;
265 sv_template
.swizzle_g
= 1;
266 sv_template
.swizzle_b
= 2;
267 sv_template
.swizzle_a
= 3;
268 sv
= ctx
->create_sampler_view(ctx
, samptex
, &sv_template
);
272 ctx
->set_fragment_sampler_views(ctx
, 1, &sv
);
275 memset(&sampler_desc
, 0, sizeof sampler_desc
);
276 sampler_desc
.wrap_s
= PIPE_TEX_WRAP_REPEAT
;
277 sampler_desc
.wrap_t
= PIPE_TEX_WRAP_REPEAT
;
278 sampler_desc
.wrap_r
= PIPE_TEX_WRAP_REPEAT
;
279 sampler_desc
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
280 sampler_desc
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
281 sampler_desc
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
282 sampler_desc
.compare_mode
= PIPE_TEX_COMPARE_NONE
;
283 sampler_desc
.compare_func
= 0;
284 sampler_desc
.normalized_coords
= 1;
285 sampler_desc
.max_anisotropy
= 0;
287 sampler
= ctx
->create_sampler_state(ctx
, &sampler_desc
);
291 ctx
->bind_fragment_sampler_states(ctx
, 1, &sampler
);
295 static void init( void )
297 struct pipe_framebuffer_state fb
;
298 struct pipe_resource templat
;
299 struct pipe_surface surf_tmpl
;
302 /* It's hard to say whether window or screen should be created
303 * first. Different environments would prefer one or the other.
305 * Also, no easy way of querying supported formats if the screen
306 * cannot be created first.
308 for (i
= 0; formats
[i
] != PIPE_FORMAT_NONE
; i
++) {
309 screen
= graw_create_window_and_screen(0, 0, 300, 300,
312 if (window
&& screen
)
315 if (!screen
|| !window
) {
316 fprintf(stderr
, "Unable to create window\n");
320 ctx
= screen
->context_create(screen
, NULL
);
324 templat
.target
= PIPE_TEXTURE_2D
;
325 templat
.format
= formats
[i
];
326 templat
.width0
= WIDTH
;
327 templat
.height0
= HEIGHT
;
329 templat
.array_size
= 1;
330 templat
.last_level
= 0;
331 templat
.nr_samples
= 1;
332 templat
.bind
= (PIPE_BIND_RENDER_TARGET
|
333 PIPE_BIND_DISPLAY_TARGET
);
335 rttex
= screen
->resource_create(screen
,
340 surf_tmpl
.format
= templat
.format
;
341 surf_tmpl
.usage
= PIPE_BIND_RENDER_TARGET
;
342 surf_tmpl
.u
.tex
.level
= 0;
343 surf_tmpl
.u
.tex
.first_layer
= 0;
344 surf_tmpl
.u
.tex
.last_layer
= 0;
345 surf
= ctx
->create_surface(ctx
, rttex
, &surf_tmpl
);
349 memset(&fb
, 0, sizeof fb
);
355 ctx
->set_framebuffer_state(ctx
, &fb
);
358 struct pipe_blend_state blend
;
360 memset(&blend
, 0, sizeof blend
);
361 blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
362 handle
= ctx
->create_blend_state(ctx
, &blend
);
363 ctx
->bind_blend_state(ctx
, handle
);
367 struct pipe_depth_stencil_alpha_state depthstencil
;
369 memset(&depthstencil
, 0, sizeof depthstencil
);
370 handle
= ctx
->create_depth_stencil_alpha_state(ctx
, &depthstencil
);
371 ctx
->bind_depth_stencil_alpha_state(ctx
, handle
);
375 struct pipe_rasterizer_state rasterizer
;
377 memset(&rasterizer
, 0, sizeof rasterizer
);
378 rasterizer
.cull_face
= PIPE_FACE_NONE
;
379 rasterizer
.gl_rasterization_rules
= 1;
380 handle
= ctx
->create_rasterizer_state(ctx
, &rasterizer
);
381 ctx
->bind_rasterizer_state(ctx
, handle
);
384 set_viewport(0, 0, WIDTH
, HEIGHT
, 30, 1000);
390 set_fragment_shader();
393 static void args(int argc
, char *argv
[])
397 for (i
= 1; i
< argc
;) {
398 if (graw_parse_args(&i
, argc
, argv
)) {
406 int main( int argc
, char *argv
[] )
411 graw_set_display_func( draw
);