1 /**************************************************************************
3 * Copyright © 2010 Jakob Bornecrantz
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
24 **************************************************************************/
34 /* pipe_*_state structs */
35 #include "pipe/p_state.h"
37 #include "pipe/p_context.h"
39 #include "pipe/p_screen.h"
41 #include "pipe/p_defines.h"
42 /* TGSI_SEMANTIC_{POSITION|GENERIC} */
43 #include "pipe/p_shader_tokens.h"
44 /* pipe_buffer_* helpers */
45 #include "util/u_inlines.h"
47 /* constant state object helper */
48 #include "cso_cache/cso_context.h"
50 /* u_sampler_view_default_template */
51 #include "util/u_sampler.h"
52 /* debug_dump_surface_bmp */
53 #include "util/u_debug.h"
54 /* util_draw_vertex_buffer helper */
55 #include "util/u_draw_quad.h"
56 /* FREE & CALLOC_STRUCT */
57 #include "util/u_memory.h"
58 /* util_make_[fragment|vertex]_passthrough_shader */
59 #include "util/u_simple_shaders.h"
61 /* softpipe software driver */
62 #include "softpipe/sp_public.h"
64 /* null software winsys */
65 #include "sw/null/null_sw_winsys.h"
67 /* traceing support see src/gallium/drivers/trace/README for more info. */
69 #include "trace/tr_screen.h"
70 #include "trace/tr_context.h"
75 struct pipe_screen
*screen
;
76 struct pipe_context
*pipe
;
77 struct cso_context
*cso
;
79 struct pipe_blend_state blend
;
80 struct pipe_depth_stencil_alpha_state depthstencil
;
81 struct pipe_rasterizer_state rasterizer
;
82 struct pipe_sampler_state sampler
;
83 struct pipe_viewport_state viewport
;
84 struct pipe_framebuffer_state framebuffer
;
85 struct pipe_vertex_element velem
[2];
92 struct pipe_resource
*vbuf
;
93 struct pipe_resource
*target
;
94 struct pipe_resource
*tex
;
95 struct pipe_sampler_view
*view
;
98 static void init_prog(struct program
*p
)
100 /* create the software rasterizer */
101 p
->screen
= softpipe_create_screen(null_sw_create());
103 p
->screen
= trace_screen_create(p
->screen
);
105 p
->pipe
= p
->screen
->context_create(p
->screen
, NULL
);
106 p
->cso
= cso_create_context(p
->pipe
);
108 /* set clear color */
109 p
->clear_color
[0] = 0.3;
110 p
->clear_color
[1] = 0.1;
111 p
->clear_color
[2] = 0.3;
112 p
->clear_color
[3] = 1.0;
116 float vertices
[4][2][4] = {
118 { 0.9f
, 0.9f
, 0.0f
, 1.0f
},
119 { 1.0f
, 1.0f
, 0.0f
, 1.0f
}
122 { -0.9f
, 0.9f
, 0.0f
, 1.0f
},
123 { 0.0f
, 1.0f
, 0.0f
, 1.0f
}
126 { -0.9f
, -0.9f
, 0.0f
, 1.0f
},
127 { 0.0f
, 0.0f
, 1.0f
, 1.0f
}
130 { 0.9f
, -0.9f
, 0.0f
, 1.0f
},
131 { 1.0f
, 0.0f
, 1.0f
, 1.0f
}
135 p
->vbuf
= pipe_buffer_create(p
->screen
, PIPE_BIND_VERTEX_BUFFER
, sizeof(vertices
));
136 pipe_buffer_write(p
->pipe
, p
->vbuf
, 0, sizeof(vertices
), vertices
);
139 /* render target texture */
141 struct pipe_resource tmplt
;
142 memset(&tmplt
, 0, sizeof(tmplt
));
143 tmplt
.target
= PIPE_TEXTURE_2D
;
144 tmplt
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
; /* All drivers support this */
145 tmplt
.width0
= WIDTH
;
146 tmplt
.height0
= HEIGHT
;
148 tmplt
.last_level
= 0;
149 tmplt
.bind
= PIPE_BIND_RENDER_TARGET
;
151 p
->target
= p
->screen
->resource_create(p
->screen
, &tmplt
);
154 /* sampler texture */
157 struct pipe_transfer
*t
;
158 struct pipe_resource t_tmplt
;
159 struct pipe_sampler_view v_tmplt
;
160 struct pipe_subresource sub
;
163 memset(&t_tmplt
, 0, sizeof(t_tmplt
));
164 t_tmplt
.target
= PIPE_TEXTURE_2D
;
165 t_tmplt
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
; /* All drivers support this */
169 t_tmplt
.last_level
= 0;
170 t_tmplt
.bind
= PIPE_BIND_RENDER_TARGET
;
172 p
->tex
= p
->screen
->resource_create(p
->screen
, &t_tmplt
);
174 memset(&sub
, 0, sizeof(sub
));
175 memset(&box
, 0, sizeof(box
));
179 t
= p
->pipe
->get_transfer(p
->pipe
, p
->tex
, sub
, PIPE_TRANSFER_WRITE
, &box
);
181 ptr
= p
->pipe
->transfer_map(p
->pipe
, t
);
186 p
->pipe
->transfer_unmap(p
->pipe
, t
);
188 p
->pipe
->transfer_destroy(p
->pipe
, t
);
190 u_sampler_view_default_template(&v_tmplt
, p
->tex
, p
->tex
->format
);
192 p
->view
= p
->pipe
->create_sampler_view(p
->pipe
, p
->tex
, &v_tmplt
);
195 /* disabled blending/masking */
196 memset(&p
->blend
, 0, sizeof(p
->blend
));
197 p
->blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
199 /* no-op depth/stencil/alpha */
200 memset(&p
->depthstencil
, 0, sizeof(p
->depthstencil
));
203 memset(&p
->rasterizer
, 0, sizeof(p
->rasterizer
));
204 p
->rasterizer
.front_winding
= PIPE_WINDING_CW
;
205 p
->rasterizer
.cull_mode
= PIPE_WINDING_NONE
;
206 p
->rasterizer
.gl_rasterization_rules
= 1;
209 memset(&p
->sampler
, 0, sizeof(p
->sampler
));
210 p
->sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
211 p
->sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
212 p
->sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
213 p
->sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
214 p
->sampler
.min_img_filter
= PIPE_TEX_MIPFILTER_LINEAR
;
215 p
->sampler
.mag_img_filter
= PIPE_TEX_MIPFILTER_LINEAR
;
216 p
->sampler
.normalized_coords
= 1;
218 /* drawing destination */
219 memset(&p
->framebuffer
, 0, sizeof(p
->framebuffer
));
220 p
->framebuffer
.width
= WIDTH
;
221 p
->framebuffer
.height
= HEIGHT
;
222 p
->framebuffer
.nr_cbufs
= 1;
223 p
->framebuffer
.cbufs
[0] = p
->screen
->get_tex_surface(p
->screen
, p
->target
, 0, 0, 0, PIPE_BIND_RENDER_TARGET
);
225 /* viewport, depth isn't really needed */
230 float half_width
= (float)WIDTH
/ 2.0f
;
231 float half_height
= (float)HEIGHT
/ 2.0f
;
232 float half_depth
= ((float)FAR
- (float)NEAR
) / 2.0f
;
237 bias
= (float)HEIGHT
;
243 p
->viewport
.scale
[0] = half_width
;
244 p
->viewport
.scale
[1] = half_height
* scale
;
245 p
->viewport
.scale
[2] = half_depth
;
246 p
->viewport
.scale
[3] = 1.0f
;
248 p
->viewport
.translate
[0] = half_width
+ x
;
249 p
->viewport
.translate
[1] = (half_height
+ y
) * scale
+ bias
;
250 p
->viewport
.translate
[2] = half_depth
+ z
;
251 p
->viewport
.translate
[3] = 0.0f
;
254 /* vertex elements state */
255 memset(p
->velem
, 0, sizeof(p
->velem
));
256 p
->velem
[0].src_offset
= 0 * 4 * sizeof(float); /* offset 0, first element */
257 p
->velem
[0].instance_divisor
= 0;
258 p
->velem
[0].vertex_buffer_index
= 0;
259 p
->velem
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
261 p
->velem
[1].src_offset
= 1 * 4 * sizeof(float); /* offset 16, second element */
262 p
->velem
[1].instance_divisor
= 0;
263 p
->velem
[1].vertex_buffer_index
= 0;
264 p
->velem
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
268 const uint semantic_names
[] = { TGSI_SEMANTIC_POSITION
,
269 TGSI_SEMANTIC_GENERIC
};
270 const uint semantic_indexes
[] = { 0, 0 };
271 p
->vs
= util_make_vertex_passthrough_shader(p
->pipe
, 2, semantic_names
, semantic_indexes
);
274 /* fragment shader */
275 p
->fs
= util_make_fragment_tex_shader(p
->pipe
, TGSI_TEXTURE_2D
);
278 static void close_prog(struct program
*p
)
280 /* unset bound textures as well */
281 cso_set_fragment_sampler_views(p
->cso
, 0, NULL
);
283 /* unset all state */
284 cso_release_all(p
->cso
);
286 p
->pipe
->delete_vs_state(p
->pipe
, p
->vs
);
287 p
->pipe
->delete_fs_state(p
->pipe
, p
->fs
);
289 pipe_surface_reference(&p
->framebuffer
.cbufs
[0], NULL
);
290 pipe_sampler_view_reference(&p
->view
, NULL
);
291 pipe_resource_reference(&p
->target
, NULL
);
292 pipe_resource_reference(&p
->tex
, NULL
);
293 pipe_resource_reference(&p
->vbuf
, NULL
);
295 cso_destroy_context(p
->cso
);
296 p
->pipe
->destroy(p
->pipe
);
297 p
->screen
->destroy(p
->screen
);
302 static void draw(struct program
*p
)
304 /* set the render target */
305 cso_set_framebuffer(p
->cso
, &p
->framebuffer
);
307 /* clear the render target */
308 p
->pipe
->clear(p
->pipe
, PIPE_CLEAR_COLOR
, p
->clear_color
, 0, 0);
310 /* set misc state we care about */
311 cso_set_blend(p
->cso
, &p
->blend
);
312 cso_set_depth_stencil_alpha(p
->cso
, &p
->depthstencil
);
313 cso_set_rasterizer(p
->cso
, &p
->rasterizer
);
314 cso_set_viewport(p
->cso
, &p
->viewport
);
317 cso_single_sampler(p
->cso
, 0, &p
->sampler
);
318 cso_single_sampler_done(p
->cso
);
320 /* texture sampler view */
321 cso_set_fragment_sampler_views(p
->cso
, 1, &p
->view
);
324 cso_set_fragment_shader_handle(p
->cso
, p
->fs
);
325 cso_set_vertex_shader_handle(p
->cso
, p
->vs
);
327 /* vertex element data */
328 cso_set_vertex_elements(p
->cso
, 2, p
->velem
);
330 util_draw_vertex_buffer(p
->pipe
,
334 2); /* attribs/vert */
336 p
->pipe
->flush(p
->pipe
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
338 debug_dump_surface_bmp(p
->pipe
, "result.bmp", p
->framebuffer
.cbufs
[0]);
341 int main(int argc
, char** argv
)
343 struct program
*p
= CALLOC_STRUCT(program
);