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 /* debug_dump_surface_bmp */ 51 #include "util/u_debug.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 61 struct 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 84 static 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, PIPE_SEARCH_DIR); 95 assert(p->screen); 96 97 /* create the pipe driver context and cso context */ 98 p->pipe = p->screen->context_create(p->screen, NULL); 99 p->cso = cso_create_context(p->pipe); 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_STATIC, 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.gl_rasterization_rules = 1; 156 p->rasterizer.depth_clip = 1; 157 158 surf_tmpl.format = PIPE_FORMAT_B8G8R8A8_UNORM; 159 surf_tmpl.usage = PIPE_BIND_RENDER_TARGET; 160 surf_tmpl.u.tex.level = 0; 161 surf_tmpl.u.tex.first_layer = 0; 162 surf_tmpl.u.tex.last_layer = 0; 163 /* drawing destination */ 164 memset(&p->framebuffer, 0, sizeof(p->framebuffer)); 165 p->framebuffer.width = WIDTH; 166 p->framebuffer.height = HEIGHT; 167 p->framebuffer.nr_cbufs = 1; 168 p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, p->target, &surf_tmpl); 169 170 /* viewport, depth isn't really needed */ 171 { 172 float x = 0; 173 float y = 0; 174 float z = FAR; 175 float half_width = (float)WIDTH / 2.0f; 176 float half_height = (float)HEIGHT / 2.0f; 177 float half_depth = ((float)FAR - (float)NEAR) / 2.0f; 178 float scale, bias; 179 180 if (FLIP) { 181 scale = -1.0f; 182 bias = (float)HEIGHT; 183 } else { 184 scale = 1.0f; 185 bias = 0.0f; 186 } 187 188 p->viewport.scale[0] = half_width; 189 p->viewport.scale[1] = half_height * scale; 190 p->viewport.scale[2] = half_depth; 191 p->viewport.scale[3] = 1.0f; 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 p->viewport.translate[3] = 0.0f; 197 } 198 199 /* vertex elements state */ 200 memset(p->velem, 0, sizeof(p->velem)); 201 p->velem[0].src_offset = 0 * 4 * sizeof(float); /* offset 0, first element */ 202 p->velem[0].instance_divisor = 0; 203 p->velem[0].vertex_buffer_index = 0; 204 p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 205 206 p->velem[1].src_offset = 1 * 4 * sizeof(float); /* offset 16, second element */ 207 p->velem[1].instance_divisor = 0; 208 p->velem[1].vertex_buffer_index = 0; 209 p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 210 211 /* vertex shader */ 212 { 213 const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, 214 TGSI_SEMANTIC_COLOR }; 215 const uint semantic_indexes[] = { 0, 0 }; 216 p->vs = util_make_vertex_passthrough_shader(p->pipe, 2, semantic_names, semantic_indexes); 217 } 218 219 /* fragment shader */ 220 p->fs = util_make_fragment_passthrough_shader(p->pipe); 221 } 222 223 static void close_prog(struct program *p) 224 { 225 /* unset all state */ 226 cso_release_all(p->cso); 227 228 p->pipe->delete_vs_state(p->pipe, p->vs); 229 p->pipe->delete_fs_state(p->pipe, p->fs); 230 231 pipe_surface_reference(&p->framebuffer.cbufs[0], NULL); 232 pipe_resource_reference(&p->target, NULL); 233 pipe_resource_reference(&p->vbuf, NULL); 234 235 cso_destroy_context(p->cso); 236 p->pipe->destroy(p->pipe); 237 p->screen->destroy(p->screen); 238 pipe_loader_release(&p->dev, 1); 239 240 FREE(p); 241 } 242 243 static void draw(struct program *p) 244 { 245 /* set the render target */ 246 cso_set_framebuffer(p->cso, &p->framebuffer); 247 248 /* clear the render target */ 249 p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, &p->clear_color, 0, 0); 250 251 /* set misc state we care about */ 252 cso_set_blend(p->cso, &p->blend); 253 cso_set_depth_stencil_alpha(p->cso, &p->depthstencil); 254 cso_set_rasterizer(p->cso, &p->rasterizer); 255 cso_set_viewport(p->cso, &p->viewport); 256 257 /* shaders */ 258 cso_set_fragment_shader_handle(p->cso, p->fs); 259 cso_set_vertex_shader_handle(p->cso, p->vs); 260 261 /* vertex element data */ 262 cso_set_vertex_elements(p->cso, 2, p->velem); 263 264 util_draw_vertex_buffer(p->pipe, p->cso, 265 p->vbuf, 0, 266 PIPE_PRIM_TRIANGLES, 267 3, /* verts */ 268 2); /* attribs/vert */ 269 270 p->pipe->flush(p->pipe, NULL); 271 272 debug_dump_surface_bmp(p->pipe, "result.bmp", p->framebuffer.cbufs[0]); 273 } 274 275 int main(int argc, char** argv) 276 { 277 struct program *p = CALLOC_STRUCT(program); 278 279 init_prog(p); 280 draw(p); 281 close_prog(p); 282 283 return 0; 284 } 285
