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/* debug_dump_surface_bmp */ 51#include "util/u_debug_image.h" 52/* util_draw_vertex_buffer helper */ 53#include "util/u_draw_quad.h" 54/* FREE & CALLOC_STRUCT */ 55#include "util/u_memory.h" 56/* util_make_[fragment|vertex]_passthrough_shader */ 57#include "util/u_simple_shaders.h" 58/* to get a hardware pipe driver */ 59#include "pipe-loader/pipe_loader.h" 60 61struct program 62{ 63 struct pipe_loader_device *dev; 64 struct pipe_screen *screen; 65 struct pipe_context *pipe; 66 struct cso_context *cso; 67 68 struct pipe_blend_state blend; 69 struct pipe_depth_stencil_alpha_state depthstencil; 70 struct pipe_rasterizer_state rasterizer; 71 struct pipe_viewport_state viewport; 72 struct pipe_framebuffer_state framebuffer; 73 struct pipe_vertex_element velem[2]; 74 75 void *vs; 76 void *fs; 77 78 union pipe_color_union clear_color; 79 80 struct pipe_resource *vbuf; 81 struct pipe_resource *target; 82}; 83 84static void init_prog(struct program *p) 85{ 86 struct pipe_surface surf_tmpl; 87 int ret; 88 89 /* find a hardware device */ 90 ret = pipe_loader_probe(&p->dev, 1); 91 assert(ret); 92 93 /* init a pipe screen */ 94 p->screen = pipe_loader_create_screen(p->dev); 95 assert(p->screen); 96 97 /* create the pipe driver context and cso context */ 98 p->pipe = p->screen->context_create(p->screen, NULL, 0); 99 p->cso = cso_create_context(p->pipe, 0); 100 101 /* set clear color */ 102 p->clear_color.f[0] = 0.3; 103 p->clear_color.f[1] = 0.1; 104 p->clear_color.f[2] = 0.3; 105 p->clear_color.f[3] = 1.0; 106 107 /* vertex buffer */ 108 { 109 float vertices[4][2][4] = { 110 { 111 { 0.0f, -0.9f, 0.0f, 1.0f }, 112 { 1.0f, 0.0f, 0.0f, 1.0f } 113 }, 114 { 115 { -0.9f, 0.9f, 0.0f, 1.0f }, 116 { 0.0f, 1.0f, 0.0f, 1.0f } 117 }, 118 { 119 { 0.9f, 0.9f, 0.0f, 1.0f }, 120 { 0.0f, 0.0f, 1.0f, 1.0f } 121 } 122 }; 123 124 p->vbuf = pipe_buffer_create(p->screen, PIPE_BIND_VERTEX_BUFFER, 125 PIPE_USAGE_DEFAULT, sizeof(vertices)); 126 pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(vertices), vertices); 127 } 128 129 /* render target texture */ 130 { 131 struct pipe_resource tmplt; 132 memset(&tmplt, 0, sizeof(tmplt)); 133 tmplt.target = PIPE_TEXTURE_2D; 134 tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */ 135 tmplt.width0 = WIDTH; 136 tmplt.height0 = HEIGHT; 137 tmplt.depth0 = 1; 138 tmplt.array_size = 1; 139 tmplt.last_level = 0; 140 tmplt.bind = PIPE_BIND_RENDER_TARGET; 141 142 p->target = p->screen->resource_create(p->screen, &tmplt); 143 } 144 145 /* disabled blending/masking */ 146 memset(&p->blend, 0, sizeof(p->blend)); 147 p->blend.rt[0].colormask = PIPE_MASK_RGBA; 148 149 /* no-op depth/stencil/alpha */ 150 memset(&p->depthstencil, 0, sizeof(p->depthstencil)); 151 152 /* rasterizer */ 153 memset(&p->rasterizer, 0, sizeof(p->rasterizer)); 154 p->rasterizer.cull_face = PIPE_FACE_NONE; 155 p->rasterizer.half_pixel_center = 1; 156 p->rasterizer.bottom_edge_rule = 1; 157 p->rasterizer.depth_clip_near = 1; 158 p->rasterizer.depth_clip_far = 1; 159 160 surf_tmpl.format = PIPE_FORMAT_B8G8R8A8_UNORM; 161 surf_tmpl.u.tex.level = 0; 162 surf_tmpl.u.tex.first_layer = 0; 163 surf_tmpl.u.tex.last_layer = 0; 164 /* drawing destination */ 165 memset(&p->framebuffer, 0, sizeof(p->framebuffer)); 166 p->framebuffer.width = WIDTH; 167 p->framebuffer.height = HEIGHT; 168 p->framebuffer.nr_cbufs = 1; 169 p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, p->target, &surf_tmpl); 170 171 /* viewport, depth isn't really needed */ 172 { 173 float x = 0; 174 float y = 0; 175 float z = NEAR; 176 float half_width = (float)WIDTH / 2.0f; 177 float half_height = (float)HEIGHT / 2.0f; 178 float half_depth = ((float)FAR - (float)NEAR) / 2.0f; 179 float scale, bias; 180 181 if (FLIP) { 182 scale = -1.0f; 183 bias = (float)HEIGHT; 184 } else { 185 scale = 1.0f; 186 bias = 0.0f; 187 } 188 189 p->viewport.scale[0] = half_width; 190 p->viewport.scale[1] = half_height * scale; 191 p->viewport.scale[2] = half_depth; 192 193 p->viewport.translate[0] = half_width + x; 194 p->viewport.translate[1] = (half_height + y) * scale + bias; 195 p->viewport.translate[2] = half_depth + z; 196 } 197 198 /* vertex elements state */ 199 memset(p->velem, 0, sizeof(p->velem)); 200 p->velem[0].src_offset = 0 * 4 * sizeof(float); /* offset 0, first element */ 201 p->velem[0].instance_divisor = 0; 202 p->velem[0].vertex_buffer_index = 0; 203 p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 204 205 p->velem[1].src_offset = 1 * 4 * sizeof(float); /* offset 16, second element */ 206 p->velem[1].instance_divisor = 0; 207 p->velem[1].vertex_buffer_index = 0; 208 p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 209 210 /* vertex shader */ 211 { 212 const enum tgsi_semantic semantic_names[] = 213 { TGSI_SEMANTIC_POSITION, TGSI_SEMANTIC_COLOR }; 214 const uint semantic_indexes[] = { 0, 0 }; 215 p->vs = util_make_vertex_passthrough_shader(p->pipe, 2, semantic_names, semantic_indexes, FALSE); 216 } 217 218 /* fragment shader */ 219 p->fs = util_make_fragment_passthrough_shader(p->pipe, 220 TGSI_SEMANTIC_COLOR, TGSI_INTERPOLATE_PERSPECTIVE, TRUE); 221} 222 223static void close_prog(struct program *p) 224{ 225 cso_destroy_context(p->cso); 226 227 p->pipe->delete_vs_state(p->pipe, p->vs); 228 p->pipe->delete_fs_state(p->pipe, p->fs); 229 230 pipe_surface_reference(&p->framebuffer.cbufs[0], NULL); 231 pipe_resource_reference(&p->target, NULL); 232 pipe_resource_reference(&p->vbuf, NULL); 233 234 p->pipe->destroy(p->pipe); 235 p->screen->destroy(p->screen); 236 pipe_loader_release(&p->dev, 1); 237 238 FREE(p); 239} 240 241static void draw(struct program *p) 242{ 243 /* set the render target */ 244 cso_set_framebuffer(p->cso, &p->framebuffer); 245 246 /* clear the render target */ 247 p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, &p->clear_color, 0, 0); 248 249 /* set misc state we care about */ 250 cso_set_blend(p->cso, &p->blend); 251 cso_set_depth_stencil_alpha(p->cso, &p->depthstencil); 252 cso_set_rasterizer(p->cso, &p->rasterizer); 253 cso_set_viewport(p->cso, &p->viewport); 254 255 /* shaders */ 256 cso_set_fragment_shader_handle(p->cso, p->fs); 257 cso_set_vertex_shader_handle(p->cso, p->vs); 258 259 /* vertex element data */ 260 cso_set_vertex_elements(p->cso, 2, p->velem); 261 262 util_draw_vertex_buffer(p->pipe, p->cso, 263 p->vbuf, 0, 0, 264 PIPE_PRIM_TRIANGLES, 265 3, /* verts */ 266 2); /* attribs/vert */ 267 268 p->pipe->flush(p->pipe, NULL, 0); 269 270 debug_dump_surface_bmp(p->pipe, "result.bmp", p->framebuffer.cbufs[0]); 271} 272 273int main(int argc, char** argv) 274{ 275 struct program *p = CALLOC_STRUCT(program); 276 277 init_prog(p); 278 draw(p); 279 close_prog(p); 280 281 return 0; 282} 283