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_box.h"
17 enum pipe_format formats
[] = {
18 PIPE_FORMAT_R8G8B8A8_UNORM
,
19 PIPE_FORMAT_B8G8R8A8_UNORM
,
23 static const int WIDTH
= 300;
24 static const int HEIGHT
= 300;
26 static struct pipe_screen
*screen
= NULL
;
27 static struct pipe_context
*ctx
= NULL
;
28 static struct pipe_resource
*rttex
= NULL
;
29 static struct pipe_resource
*samptex
= NULL
;
30 static struct pipe_surface
*surf
= NULL
;
31 static struct pipe_sampler_view
*sv
= NULL
;
32 static void *sampler
= NULL
;
33 static void *window
= NULL
;
40 static struct vertex vertices
[] =
42 { { 0.9, -0.9, 0.0, 1.0 },
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 },
58 static void set_viewport( float x
, float y
,
59 float width
, float height
,
60 float near
, float far
)
63 float half_width
= (float)width
/ 2.0f
;
64 float half_height
= (float)height
/ 2.0f
;
65 float half_depth
= ((float)far
- (float)near
) / 2.0f
;
66 struct pipe_viewport_state vp
;
68 vp
.scale
[0] = half_width
;
69 vp
.scale
[1] = half_height
;
70 vp
.scale
[2] = half_depth
;
73 vp
.translate
[0] = half_width
+ x
;
74 vp
.translate
[1] = half_height
+ y
;
75 vp
.translate
[2] = half_depth
+ z
;
76 vp
.translate
[3] = 0.0f
;
78 ctx
->set_viewport_state( ctx
, &vp
);
81 static void set_vertices( void )
83 struct pipe_vertex_element ve
[2];
84 struct pipe_vertex_buffer vbuf
;
87 memset(ve
, 0, sizeof ve
);
89 ve
[0].src_offset
= Offset(struct vertex
, position
);
90 ve
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
91 ve
[1].src_offset
= Offset(struct vertex
, color
);
92 ve
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
94 handle
= ctx
->create_vertex_elements_state(ctx
, 2, ve
);
95 ctx
->bind_vertex_elements_state(ctx
, handle
);
98 vbuf
.stride
= sizeof( struct vertex
);
99 vbuf
.max_index
= sizeof(vertices
) / vbuf
.stride
;
100 vbuf
.buffer_offset
= 0;
101 vbuf
.buffer
= screen
->user_buffer_create(screen
,
104 PIPE_BIND_VERTEX_BUFFER
);
106 ctx
->set_vertex_buffers(ctx
, 1, &vbuf
);
109 static void set_vertex_shader( void )
116 "DCL OUT[0], POSITION\n"
117 "DCL OUT[1], GENERIC[0]\n"
118 " 0: MOV OUT[1], IN[1]\n"
119 " 1: MOV OUT[0], IN[0]\n"
122 handle
= graw_parse_vertex_shader(ctx
, text
);
123 ctx
->bind_vs_state(ctx
, handle
);
126 static void set_fragment_shader( void )
131 "DCL IN[0], GENERIC[0], PERSPECTIVE\n"
132 "DCL OUT[0], COLOR\n"
135 " 0: TXP TEMP[0], IN[0], SAMP[0], 2D\n"
136 " 1: MOV OUT[0], TEMP[0]\n"
139 handle
= graw_parse_fragment_shader(ctx
, text
);
140 ctx
->bind_fs_state(ctx
, handle
);
144 static void draw( void )
146 float clear_color
[4] = {.5,.5,.5,1};
148 ctx
->clear(ctx
, PIPE_CLEAR_COLOR
, clear_color
, 0, 0);
149 ctx
->draw_arrays(ctx
, PIPE_PRIM_QUADS
, 0, 4);
150 ctx
->flush(ctx
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
153 /* At the moment, libgraw leaks out/makes available some of the
154 * symbols from gallium/auxiliary, including these debug helpers.
155 * Will eventually want to bless some of these paths, and lock the
156 * others down so they aren't accessible from test programs.
158 * This currently just happens to work on debug builds - a release
159 * build will probably fail to link here:
161 debug_dump_surface_bmp(ctx
, "result.bmp", surf
);
164 screen
->flush_frontbuffer(screen
, surf
, window
);
169 static void init_tex( void )
171 struct pipe_sampler_view sv_template
;
172 struct pipe_sampler_state sampler_desc
;
173 struct pipe_resource templat
;
175 ubyte tex2d
[SIZE
][SIZE
][4];
179 for (s
= 0; s
< SIZE
; s
++) {
180 for (t
= 0; t
< SIZE
; t
++) {
183 tex2d
[t
][s
][0] = (x
) ? 0 : 63;
184 tex2d
[t
][s
][1] = (x
) ? 0 : 128;
186 tex2d
[t
][s
][3] = 0xff;
189 int x
= ((s
^ t
) >> 2) & 1;
190 tex2d
[t
][s
][0] = s
*255/(SIZE
-1);
191 tex2d
[t
][s
][1] = t
*255/(SIZE
-1);
192 tex2d
[t
][s
][2] = (x
) ? 0 : 128;
193 tex2d
[t
][s
][3] = 0xff;
199 tex2d
[0][0][1] = 255;
200 tex2d
[0][0][2] = 255;
205 tex2d
[0][1][2] = 255;
206 tex2d
[0][1][3] = 255;
208 tex2d
[1][0][0] = 255;
209 tex2d
[1][0][1] = 255;
211 tex2d
[1][0][3] = 255;
213 tex2d
[1][1][0] = 255;
216 tex2d
[1][1][3] = 255;
219 templat
.target
= PIPE_TEXTURE_2D
;
220 templat
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
;
221 templat
.width0
= SIZE
;
222 templat
.height0
= SIZE
;
224 templat
.last_level
= 0;
225 templat
.nr_samples
= 1;
226 templat
.bind
= PIPE_BIND_SAMPLER_VIEW
;
229 samptex
= screen
->resource_create(screen
,
234 u_box_2d(0,0,SIZE
,SIZE
, &box
);
236 ctx
->transfer_inline_write(ctx
,
245 /* Possibly read back & compare against original data:
249 struct pipe_transfer
*t
;
251 t
= pipe_get_transfer(ctx
, samptex
,
252 0, 0, 0, /* face, level, zslice */
254 0, 0, SIZE
, SIZE
); /* x, y, width, height */
256 ptr
= ctx
->transfer_map(ctx
, t
);
258 if (memcmp(ptr
, tex2d
, sizeof tex2d
) != 0) {
263 ctx
->transfer_unmap(ctx
, t
);
265 ctx
->transfer_destroy(ctx
, t
);
268 memset(&sv_template
, 0, sizeof sv_template
);
269 sv_template
.format
= samptex
->format
;
270 sv_template
.texture
= samptex
;
271 sv_template
.first_level
= 0;
272 sv_template
.last_level
= 0;
273 sv_template
.swizzle_r
= 0;
274 sv_template
.swizzle_g
= 1;
275 sv_template
.swizzle_b
= 2;
276 sv_template
.swizzle_a
= 3;
277 sv
= ctx
->create_sampler_view(ctx
, samptex
, &sv_template
);
281 ctx
->set_fragment_sampler_views(ctx
, 1, &sv
);
284 memset(&sampler_desc
, 0, sizeof sampler_desc
);
285 sampler_desc
.wrap_s
= PIPE_TEX_WRAP_REPEAT
;
286 sampler_desc
.wrap_t
= PIPE_TEX_WRAP_REPEAT
;
287 sampler_desc
.wrap_r
= PIPE_TEX_WRAP_REPEAT
;
288 sampler_desc
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
289 sampler_desc
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
290 sampler_desc
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
291 sampler_desc
.compare_mode
= PIPE_TEX_COMPARE_NONE
;
292 sampler_desc
.compare_func
= 0;
293 sampler_desc
.normalized_coords
= 1;
294 sampler_desc
.max_anisotropy
= 0;
296 sampler
= ctx
->create_sampler_state(ctx
, &sampler_desc
);
300 ctx
->bind_fragment_sampler_states(ctx
, 1, &sampler
);
304 static void init( void )
306 struct pipe_framebuffer_state fb
;
307 struct pipe_resource templat
;
310 /* It's hard to say whether window or screen should be created
311 * first. Different environments would prefer one or the other.
313 * Also, no easy way of querying supported formats if the screen
314 * cannot be created first.
317 window
== NULL
&& formats
[i
] != PIPE_FORMAT_NONE
;
320 screen
= graw_create_window_and_screen(0,0,300,300,
325 ctx
= screen
->context_create(screen
, NULL
);
329 templat
.target
= PIPE_TEXTURE_2D
;
330 templat
.format
= formats
[i
];
331 templat
.width0
= WIDTH
;
332 templat
.height0
= HEIGHT
;
334 templat
.last_level
= 0;
335 templat
.nr_samples
= 1;
336 templat
.bind
= (PIPE_BIND_RENDER_TARGET
|
337 PIPE_BIND_DISPLAY_TARGET
);
339 rttex
= screen
->resource_create(screen
,
344 surf
= screen
->get_tex_surface(screen
, rttex
, 0, 0, 0,
345 PIPE_BIND_RENDER_TARGET
|
346 PIPE_BIND_DISPLAY_TARGET
);
350 memset(&fb
, 0, sizeof fb
);
356 ctx
->set_framebuffer_state(ctx
, &fb
);
359 struct pipe_blend_state blend
;
361 memset(&blend
, 0, sizeof blend
);
362 blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
363 handle
= ctx
->create_blend_state(ctx
, &blend
);
364 ctx
->bind_blend_state(ctx
, handle
);
368 struct pipe_depth_stencil_alpha_state depthstencil
;
370 memset(&depthstencil
, 0, sizeof depthstencil
);
371 handle
= ctx
->create_depth_stencil_alpha_state(ctx
, &depthstencil
);
372 ctx
->bind_depth_stencil_alpha_state(ctx
, handle
);
376 struct pipe_rasterizer_state rasterizer
;
378 memset(&rasterizer
, 0, sizeof rasterizer
);
379 rasterizer
.cull_face
= PIPE_FACE_NONE
;
380 rasterizer
.gl_rasterization_rules
= 1;
381 handle
= ctx
->create_rasterizer_state(ctx
, &rasterizer
);
382 ctx
->bind_rasterizer_state(ctx
, handle
);
385 set_viewport(0, 0, WIDTH
, HEIGHT
, 30, 1000);
391 set_fragment_shader();
395 int main( int argc
, char *argv
[] )
399 graw_set_display_func( draw
);