quad-tex.c revision abbb96b2fe4173f1234ae357786fbff54f7bb9d6
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 30 31#define FAR 1000 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/* 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" 60 61/* softpipe software driver */ 62#include "softpipe/sp_public.h" 63 64/* null software winsys */ 65#include "sw/null/null_sw_winsys.h" 66 67/* traceing support see src/gallium/drivers/trace/README for more info. */ 68#if USE_TRACE 69#include "trace/tr_screen.h" 70#include "trace/tr_context.h" 71#endif 72 73struct program 74{ 75 struct pipe_screen *screen; 76 struct pipe_context *pipe; 77 struct cso_context *cso; 78 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]; 86 87 void *vs; 88 void *fs; 89 90 float clear_color[4]; 91 92 struct pipe_resource *vbuf; 93 struct pipe_resource *target; 94 struct pipe_resource *tex; 95 struct pipe_sampler_view *view; 96}; 97 98static void init_prog(struct program *p) 99{ 100 /* create the software rasterizer */ 101 p->screen = softpipe_create_screen(null_sw_create()); 102#if USE_TRACE 103 p->screen = trace_screen_create(p->screen); 104#endif 105 p->pipe = p->screen->context_create(p->screen, NULL); 106 p->cso = cso_create_context(p->pipe); 107 108 /* 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; 113 114 /* vertex buffer */ 115 { 116 float vertices[4][2][4] = { 117 { 118 { 0.9f, 0.9f, 0.0f, 1.0f }, 119 { 1.0f, 1.0f, 0.0f, 1.0f } 120 }, 121 { 122 { -0.9f, 0.9f, 0.0f, 1.0f }, 123 { 0.0f, 1.0f, 0.0f, 1.0f } 124 }, 125 { 126 { -0.9f, -0.9f, 0.0f, 1.0f }, 127 { 0.0f, 0.0f, 1.0f, 1.0f } 128 }, 129 { 130 { 0.9f, -0.9f, 0.0f, 1.0f }, 131 { 1.0f, 0.0f, 1.0f, 1.0f } 132 } 133 }; 134 135 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); 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.last_level = 0; 149 tmplt.bind = PIPE_BIND_RENDER_TARGET; 150 151 p->target = p->screen->resource_create(p->screen, &tmplt); 152 } 153 154 /* sampler texture */ 155 { 156 uint32_t *ptr; 157 struct pipe_transfer *t; 158 struct pipe_resource t_tmplt; 159 struct pipe_sampler_view v_tmplt; 160 struct pipe_subresource sub; 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.last_level = 0; 170 t_tmplt.bind = PIPE_BIND_RENDER_TARGET; 171 172 p->tex = p->screen->resource_create(p->screen, &t_tmplt); 173 174 memset(&sub, 0, sizeof(sub)); 175 memset(&box, 0, sizeof(box)); 176 box.width = 2; 177 box.height = 2; 178 179 t = p->pipe->get_transfer(p->pipe, p->tex, sub, PIPE_TRANSFER_WRITE, &box); 180 181 ptr = p->pipe->transfer_map(p->pipe, t); 182 ptr[0] = 0xffff0000; 183 ptr[1] = 0xff0000ff; 184 ptr[2] = 0xff00ff00; 185 ptr[3] = 0xffffff00; 186 p->pipe->transfer_unmap(p->pipe, t); 187 188 p->pipe->transfer_destroy(p->pipe, t); 189 190 u_sampler_view_default_template(&v_tmplt, p->tex, p->tex->format); 191 192 p->view = p->pipe->create_sampler_view(p->pipe, p->tex, &v_tmplt); 193 } 194 195 /* disabled blending/masking */ 196 memset(&p->blend, 0, sizeof(p->blend)); 197 p->blend.rt[0].colormask = PIPE_MASK_RGBA; 198 199 /* no-op depth/stencil/alpha */ 200 memset(&p->depthstencil, 0, sizeof(p->depthstencil)); 201 202 /* rasterizer */ 203 memset(&p->rasterizer, 0, sizeof(p->rasterizer)); 204 p->rasterizer.cull_face = PIPE_FACE_NONE; 205 p->rasterizer.gl_rasterization_rules = 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 /* drawing destination */ 218 memset(&p->framebuffer, 0, sizeof(p->framebuffer)); 219 p->framebuffer.width = WIDTH; 220 p->framebuffer.height = HEIGHT; 221 p->framebuffer.nr_cbufs = 1; 222 p->framebuffer.cbufs[0] = p->screen->get_tex_surface(p->screen, p->target, 0, 0, 0, PIPE_BIND_RENDER_TARGET); 223 224 /* viewport, depth isn't really needed */ 225 { 226 float x = 0; 227 float y = 0; 228 float z = FAR; 229 float half_width = (float)WIDTH / 2.0f; 230 float half_height = (float)HEIGHT / 2.0f; 231 float half_depth = ((float)FAR - (float)NEAR) / 2.0f; 232 float scale, bias; 233 234 if (FLIP) { 235 scale = -1.0f; 236 bias = (float)HEIGHT; 237 } else { 238 scale = 1.0f; 239 bias = 0.0f; 240 } 241 242 p->viewport.scale[0] = half_width; 243 p->viewport.scale[1] = half_height * scale; 244 p->viewport.scale[2] = half_depth; 245 p->viewport.scale[3] = 1.0f; 246 247 p->viewport.translate[0] = half_width + x; 248 p->viewport.translate[1] = (half_height + y) * scale + bias; 249 p->viewport.translate[2] = half_depth + z; 250 p->viewport.translate[3] = 0.0f; 251 } 252 253 /* vertex elements state */ 254 memset(p->velem, 0, sizeof(p->velem)); 255 p->velem[0].src_offset = 0 * 4 * sizeof(float); /* offset 0, first element */ 256 p->velem[0].instance_divisor = 0; 257 p->velem[0].vertex_buffer_index = 0; 258 p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 259 260 p->velem[1].src_offset = 1 * 4 * sizeof(float); /* offset 16, second element */ 261 p->velem[1].instance_divisor = 0; 262 p->velem[1].vertex_buffer_index = 0; 263 p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 264 265 /* vertex shader */ 266 { 267 const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, 268 TGSI_SEMANTIC_GENERIC }; 269 const uint semantic_indexes[] = { 0, 0 }; 270 p->vs = util_make_vertex_passthrough_shader(p->pipe, 2, semantic_names, semantic_indexes); 271 } 272 273 /* fragment shader */ 274 p->fs = util_make_fragment_tex_shader(p->pipe, TGSI_TEXTURE_2D, TGSI_INTERPOLATE_LINEAR); 275} 276 277static void close_prog(struct program *p) 278{ 279 /* unset bound textures as well */ 280 cso_set_fragment_sampler_views(p->cso, 0, NULL); 281 282 /* unset all state */ 283 cso_release_all(p->cso); 284 285 p->pipe->delete_vs_state(p->pipe, p->vs); 286 p->pipe->delete_fs_state(p->pipe, p->fs); 287 288 pipe_surface_reference(&p->framebuffer.cbufs[0], NULL); 289 pipe_sampler_view_reference(&p->view, NULL); 290 pipe_resource_reference(&p->target, NULL); 291 pipe_resource_reference(&p->tex, NULL); 292 pipe_resource_reference(&p->vbuf, NULL); 293 294 cso_destroy_context(p->cso); 295 p->pipe->destroy(p->pipe); 296 p->screen->destroy(p->screen); 297 298 FREE(p); 299} 300 301static void draw(struct program *p) 302{ 303 /* set the render target */ 304 cso_set_framebuffer(p->cso, &p->framebuffer); 305 306 /* clear the render target */ 307 p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, p->clear_color, 0, 0); 308 309 /* set misc state we care about */ 310 cso_set_blend(p->cso, &p->blend); 311 cso_set_depth_stencil_alpha(p->cso, &p->depthstencil); 312 cso_set_rasterizer(p->cso, &p->rasterizer); 313 cso_set_viewport(p->cso, &p->viewport); 314 315 /* sampler */ 316 cso_single_sampler(p->cso, 0, &p->sampler); 317 cso_single_sampler_done(p->cso); 318 319 /* texture sampler view */ 320 cso_set_fragment_sampler_views(p->cso, 1, &p->view); 321 322 /* shaders */ 323 cso_set_fragment_shader_handle(p->cso, p->fs); 324 cso_set_vertex_shader_handle(p->cso, p->vs); 325 326 /* vertex element data */ 327 cso_set_vertex_elements(p->cso, 2, p->velem); 328 329 util_draw_vertex_buffer(p->pipe, 330 p->vbuf, 0, 331 PIPE_PRIM_QUADS, 332 4, /* verts */ 333 2); /* attribs/vert */ 334 335 p->pipe->flush(p->pipe, PIPE_FLUSH_RENDER_CACHE, NULL); 336 337 debug_dump_surface_bmp(p->pipe, "result.bmp", p->framebuffer.cbufs[0]); 338} 339 340int main(int argc, char** argv) 341{ 342 struct program *p = CALLOC_STRUCT(program); 343 344 init_prog(p); 345 draw(p); 346 close_prog(p); 347 348 return 0; 349} 350