1 /**************************************************************************
2 *
3 * Copyright © 2010 Jakob Bornecrantz
4 *
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:
11 *
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
14 * Software.
15 *
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.
23 *
24 **************************************************************************/
25
26
27 #define USE_TRACE 0
28 #define WIDTH 300
29 #define HEIGHT 300
30 #define NEAR 0
31 #define FAR 1
32 #define FLIP 0
33
34 /* pipe_*_state structs */
35 #include "pipe/p_state.h"
36 /* pipe_context */
37 #include "pipe/p_context.h"
38 /* pipe_screen */
39 #include "pipe/p_screen.h"
40 /* PIPE_* */
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"
46
47 /* constant state object helper */
48 #include "cso_cache/cso_context.h"
49
50 #include "util/macros.h"
51 /* u_sampler_view_default_template */
52 #include "util/u_sampler.h"
53 /* debug_dump_surface_bmp */
54 #include "util/u_debug_image.h"
55 /* util_draw_vertex_buffer helper */
56 #include "util/u_draw_quad.h"
57 /* FREE & CALLOC_STRUCT */
58 #include "util/u_memory.h"
59 /* util_make_[fragment|vertex]_passthrough_shader */
60 #include "util/u_simple_shaders.h"
61 /* to get a hardware pipe driver */
62 #include "pipe-loader/pipe_loader.h"
63
64 struct program
65 {
66 struct pipe_loader_device *dev;
67 struct pipe_screen *screen;
68 struct pipe_context *pipe;
69 struct cso_context *cso;
70
71 struct pipe_blend_state blend;
72 struct pipe_depth_stencil_alpha_state depthstencil;
73 struct pipe_rasterizer_state rasterizer;
74 struct pipe_sampler_state sampler;
75 struct pipe_viewport_state viewport;
76 struct pipe_framebuffer_state framebuffer;
77 struct cso_velems_state velem;
78
79 void *vs;
80 void *fs;
81
82 union pipe_color_union clear_color;
83
84 struct pipe_resource *vbuf;
85 struct pipe_resource *target;
86 struct pipe_resource *tex;
87 struct pipe_sampler_view *view;
88 };
89
init_prog(struct program * p)90 static void init_prog(struct program *p)
91 {
92 struct pipe_surface surf_tmpl;
93 ASSERTED int ret;
94
95 /* find a hardware device */
96 ret = pipe_loader_probe(&p->dev, 1);
97 assert(ret);
98
99 /* init a pipe screen */
100 p->screen = pipe_loader_create_screen(p->dev);
101 assert(p->screen);
102
103 /* create the pipe driver context and cso context */
104 p->pipe = p->screen->context_create(p->screen, NULL, 0);
105 p->cso = cso_create_context(p->pipe, 0);
106
107 /* set clear color */
108 p->clear_color.f[0] = 0.3;
109 p->clear_color.f[1] = 0.1;
110 p->clear_color.f[2] = 0.3;
111 p->clear_color.f[3] = 1.0;
112
113 /* vertex buffer */
114 {
115 float vertices[4][2][4] = {
116 {
117 { 0.9f, 0.9f, 0.0f, 1.0f },
118 { 1.0f, 1.0f, 0.0f, 1.0f }
119 },
120 {
121 { -0.9f, 0.9f, 0.0f, 1.0f },
122 { 0.0f, 1.0f, 0.0f, 1.0f }
123 },
124 {
125 { -0.9f, -0.9f, 0.0f, 1.0f },
126 { 0.0f, 0.0f, 1.0f, 1.0f }
127 },
128 {
129 { 0.9f, -0.9f, 0.0f, 1.0f },
130 { 1.0f, 0.0f, 1.0f, 1.0f }
131 }
132 };
133
134 p->vbuf = pipe_buffer_create(p->screen, PIPE_BIND_VERTEX_BUFFER,
135 PIPE_USAGE_DEFAULT, sizeof(vertices));
136 pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(vertices), vertices);
137 }
138
139 /* render target texture */
140 {
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;
147 tmplt.depth0 = 1;
148 tmplt.array_size = 1;
149 tmplt.last_level = 0;
150 tmplt.bind = PIPE_BIND_RENDER_TARGET;
151
152 p->target = p->screen->resource_create(p->screen, &tmplt);
153 }
154
155 /* sampler texture */
156 {
157 uint32_t *ptr;
158 struct pipe_transfer *t;
159 struct pipe_resource t_tmplt;
160 struct pipe_sampler_view v_tmplt;
161 struct pipe_box box;
162
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 */
166 t_tmplt.width0 = 2;
167 t_tmplt.height0 = 2;
168 t_tmplt.depth0 = 1;
169 t_tmplt.array_size = 1;
170 t_tmplt.last_level = 0;
171 t_tmplt.bind = PIPE_BIND_RENDER_TARGET;
172
173 p->tex = p->screen->resource_create(p->screen, &t_tmplt);
174
175 memset(&box, 0, sizeof(box));
176 box.width = 2;
177 box.height = 2;
178 box.depth = 1;
179
180 ptr = p->pipe->texture_map(p->pipe, p->tex, 0, PIPE_MAP_WRITE, &box, &t);
181 ptr[0] = 0xffff0000;
182 ptr[1] = 0xff0000ff;
183 ptr[2] = 0xff00ff00;
184 ptr[3] = 0xffffff00;
185 p->pipe->texture_unmap(p->pipe, t);
186
187 u_sampler_view_default_template(&v_tmplt, p->tex, p->tex->format);
188
189 p->view = p->pipe->create_sampler_view(p->pipe, p->tex, &v_tmplt);
190 }
191
192 /* disabled blending/masking */
193 memset(&p->blend, 0, sizeof(p->blend));
194 p->blend.rt[0].colormask = PIPE_MASK_RGBA;
195
196 /* no-op depth/stencil/alpha */
197 memset(&p->depthstencil, 0, sizeof(p->depthstencil));
198
199 /* rasterizer */
200 memset(&p->rasterizer, 0, sizeof(p->rasterizer));
201 p->rasterizer.cull_face = PIPE_FACE_NONE;
202 p->rasterizer.half_pixel_center = 1;
203 p->rasterizer.bottom_edge_rule = 1;
204 p->rasterizer.depth_clip_near = 1;
205 p->rasterizer.depth_clip_far = 1;
206
207 /* sampler */
208 memset(&p->sampler, 0, sizeof(p->sampler));
209 p->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
210 p->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
211 p->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
212 p->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
213 p->sampler.min_img_filter = PIPE_TEX_MIPFILTER_LINEAR;
214 p->sampler.mag_img_filter = PIPE_TEX_MIPFILTER_LINEAR;
215 p->sampler.normalized_coords = 1;
216
217 surf_tmpl.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
218 surf_tmpl.u.tex.level = 0;
219 surf_tmpl.u.tex.first_layer = 0;
220 surf_tmpl.u.tex.last_layer = 0;
221 /* drawing destination */
222 memset(&p->framebuffer, 0, sizeof(p->framebuffer));
223 p->framebuffer.width = WIDTH;
224 p->framebuffer.height = HEIGHT;
225 p->framebuffer.nr_cbufs = 1;
226 p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, p->target, &surf_tmpl);
227
228 /* viewport, depth isn't really needed */
229 {
230 float x = 0;
231 float y = 0;
232 float z = NEAR;
233 float half_width = (float)WIDTH / 2.0f;
234 float half_height = (float)HEIGHT / 2.0f;
235 float half_depth = ((float)FAR - (float)NEAR) / 2.0f;
236 float scale, bias;
237
238 if (FLIP) {
239 scale = -1.0f;
240 bias = (float)HEIGHT;
241 } else {
242 scale = 1.0f;
243 bias = 0.0f;
244 }
245
246 p->viewport.scale[0] = half_width;
247 p->viewport.scale[1] = half_height * scale;
248 p->viewport.scale[2] = half_depth;
249
250 p->viewport.translate[0] = half_width + x;
251 p->viewport.translate[1] = (half_height + y) * scale + bias;
252 p->viewport.translate[2] = half_depth + z;
253
254 p->viewport.swizzle_x = PIPE_VIEWPORT_SWIZZLE_POSITIVE_X;
255 p->viewport.swizzle_y = PIPE_VIEWPORT_SWIZZLE_POSITIVE_Y;
256 p->viewport.swizzle_z = PIPE_VIEWPORT_SWIZZLE_POSITIVE_Z;
257 p->viewport.swizzle_w = PIPE_VIEWPORT_SWIZZLE_POSITIVE_W;
258 }
259
260 /* vertex elements state */
261 memset(&p->velem, 0, sizeof(p->velem));
262 p->velem.count = 2;
263
264 p->velem.velems[0].src_offset = 0 * 4 * sizeof(float); /* offset 0, first element */
265 p->velem.velems[0].instance_divisor = 0;
266 p->velem.velems[0].vertex_buffer_index = 0;
267 p->velem.velems[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
268
269 p->velem.velems[1].src_offset = 1 * 4 * sizeof(float); /* offset 16, second element */
270 p->velem.velems[1].instance_divisor = 0;
271 p->velem.velems[1].vertex_buffer_index = 0;
272 p->velem.velems[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
273
274 /* vertex shader */
275 {
276 const enum tgsi_semantic semantic_names[] =
277 { TGSI_SEMANTIC_POSITION, TGSI_SEMANTIC_GENERIC };
278 const uint semantic_indexes[] = { 0, 0 };
279 p->vs = util_make_vertex_passthrough_shader(p->pipe, 2, semantic_names, semantic_indexes, FALSE);
280 }
281
282 /* fragment shader */
283 p->fs = util_make_fragment_tex_shader(p->pipe, TGSI_TEXTURE_2D,
284 TGSI_INTERPOLATE_LINEAR,
285 TGSI_RETURN_TYPE_FLOAT,
286 TGSI_RETURN_TYPE_FLOAT, false,
287 false);
288 }
289
close_prog(struct program * p)290 static void close_prog(struct program *p)
291 {
292 cso_destroy_context(p->cso);
293
294 p->pipe->delete_vs_state(p->pipe, p->vs);
295 p->pipe->delete_fs_state(p->pipe, p->fs);
296
297 pipe_surface_reference(&p->framebuffer.cbufs[0], NULL);
298 pipe_sampler_view_reference(&p->view, NULL);
299 pipe_resource_reference(&p->target, NULL);
300 pipe_resource_reference(&p->tex, NULL);
301 pipe_resource_reference(&p->vbuf, NULL);
302
303 p->pipe->destroy(p->pipe);
304 p->screen->destroy(p->screen);
305 pipe_loader_release(&p->dev, 1);
306
307 FREE(p);
308 }
309
draw(struct program * p)310 static void draw(struct program *p)
311 {
312 const struct pipe_sampler_state *samplers[] = {&p->sampler};
313
314 /* set the render target */
315 cso_set_framebuffer(p->cso, &p->framebuffer);
316
317 /* clear the render target */
318 p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, NULL, &p->clear_color, 0, 0);
319
320 /* set misc state we care about */
321 cso_set_blend(p->cso, &p->blend);
322 cso_set_depth_stencil_alpha(p->cso, &p->depthstencil);
323 cso_set_rasterizer(p->cso, &p->rasterizer);
324 cso_set_viewport(p->cso, &p->viewport);
325
326 /* sampler */
327 cso_set_samplers(p->cso, PIPE_SHADER_FRAGMENT, 1, samplers);
328
329 /* texture sampler view */
330 p->pipe->set_sampler_views(p->pipe, PIPE_SHADER_FRAGMENT, 0, 1, 0, false, &p->view);
331
332 /* shaders */
333 cso_set_fragment_shader_handle(p->cso, p->fs);
334 cso_set_vertex_shader_handle(p->cso, p->vs);
335
336 /* vertex element data */
337 cso_set_vertex_elements(p->cso, &p->velem);
338
339 util_draw_vertex_buffer(p->pipe, p->cso,
340 p->vbuf, 0, 0,
341 PIPE_PRIM_QUADS,
342 4, /* verts */
343 2); /* attribs/vert */
344
345 p->pipe->flush(p->pipe, NULL, 0);
346
347 debug_dump_surface_bmp(p->pipe, "result.bmp", p->framebuffer.cbufs[0]);
348 }
349
main(int argc,char ** argv)350 int main(int argc, char** argv)
351 {
352 struct program *p = CALLOC_STRUCT(program);
353
354 init_prog(p);
355 draw(p);
356 close_prog(p);
357
358 return 0;
359 }
360