src/gallium/state_trackers/python/st_device.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "pipe/p_screen.h"
  30 #include "pipe/p_context.h"
  31 #include "pipe/p_shader_tokens.h"
  32 #include "pipe/p_inlines.h"
  33 #include "cso_cache/cso_context.h"
  34 #include "util/u_math.h"
  35 #include "util/u_memory.h"
  36 #include "util/u_simple_shaders.h"
  37 #include "trace/tr_screen.h"
  38 #include "trace/tr_context.h"
  39
  40 #include "st_device.h"
  41 #include "st_winsys.h"
  42
  43
  44 static void
  45 st_device_really_destroy(struct st_device *st_dev)
  46 {
  47    if(st_dev->screen)
  48       st_dev->screen->destroy(st_dev->screen);
  49
  50    FREE(st_dev);
  51 }
  52
  53
  54 static void
  55 st_device_reference(struct st_device **ptr, struct st_device *st_dev)
  56 {
  57    struct st_device *old_dev = *ptr;
  58
  59    if (pipe_reference((struct pipe_reference **)ptr, &st_dev->reference))
  60       st_device_really_destroy(old_dev);
  61 }
  62
  63
  64 void
  65 st_device_destroy(struct st_device *st_dev)
  66 {
  67    st_device_reference(&st_dev, NULL);
  68 }
  69
  70
  71 static struct st_device *
  72 st_device_create_from_st_winsys(const struct st_winsys *st_ws)
  73 {
  74    struct st_device *st_dev;
  75
  76    if(!st_ws->screen_create ||
  77       !st_ws->context_create)
  78       return NULL;
  79
  80    st_dev = CALLOC_STRUCT(st_device);
  81    if(!st_dev)
  82       return NULL;
  83
  84    pipe_reference_init(&st_dev->reference, 1);
  85    st_dev->st_ws = st_ws;
  86
  87    st_dev->real_screen = st_ws->screen_create();
  88    if(!st_dev->real_screen) {
  89       st_device_destroy(st_dev);
  90       return NULL;
  91    }
  92
  93    st_dev->screen = trace_screen_create(st_dev->real_screen);
  94    if(!st_dev->screen) {
  95       st_device_destroy(st_dev);
  96       return NULL;
  97    }
  98
  99    return st_dev;
 100 }
 101
 102
 103 struct st_device *
 104 st_device_create(boolean hardware) {
 105    if(hardware)
 106       return st_device_create_from_st_winsys(&st_hardpipe_winsys);
 107    else
 108       return st_device_create_from_st_winsys(&st_softpipe_winsys);
 109 }
 110
 111
 112 void
 113 st_context_destroy(struct st_context *st_ctx)
 114 {
 115    unsigned i;
 116
 117    if(st_ctx) {
 118       struct st_device *st_dev = st_ctx->st_dev;
 119
 120       if(st_ctx->cso) {
 121          cso_delete_vertex_shader(st_ctx->cso, st_ctx->vs);
 122          cso_delete_fragment_shader(st_ctx->cso, st_ctx->fs);
 123
 124          cso_destroy_context(st_ctx->cso);
 125       }
 126
 127       if(st_ctx->pipe)
 128          st_ctx->pipe->destroy(st_ctx->pipe);
 129
 130       for(i = 0; i < PIPE_MAX_SAMPLERS; ++i)
 131          pipe_texture_reference(&st_ctx->sampler_textures[i], NULL);
 132       pipe_texture_reference(&st_ctx->default_texture, NULL);
 133
 134       FREE(st_ctx);
 135
 136       st_device_reference(&st_dev, NULL);
 137    }
 138 }
 139
 140
 141 struct st_context *
 142 st_context_create(struct st_device *st_dev)
 143 {
 144    struct st_context *st_ctx;
 145
 146    st_ctx = CALLOC_STRUCT(st_context);
 147    if(!st_ctx)
 148       return NULL;
 149
 150    st_device_reference(&st_ctx->st_dev, st_dev);
 151
 152    st_ctx->real_pipe = st_dev->st_ws->context_create(st_dev->real_screen);
 153    if(!st_ctx->real_pipe) {
 154       st_context_destroy(st_ctx);
 155       return NULL;
 156    }
 157
 158    st_ctx->pipe = trace_context_create(st_dev->screen, st_ctx->real_pipe);
 159    if(!st_ctx->pipe) {
 160       st_context_destroy(st_ctx);
 161       return NULL;
 162    }
 163
 164    st_ctx->cso = cso_create_context(st_ctx->pipe);
 165    if(!st_ctx->cso) {
 166       st_context_destroy(st_ctx);
 167       return NULL;
 168    }
 169
 170    /* disabled blending/masking */
 171    {
 172       struct pipe_blend_state blend;
 173       memset(&blend, 0, sizeof(blend));
 174       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 175       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 176       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 177       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 178       blend.colormask = PIPE_MASK_RGBA;
 179       cso_set_blend(st_ctx->cso, &blend);
 180    }
 181
 182    /* no-op depth/stencil/alpha */
 183    {
 184       struct pipe_depth_stencil_alpha_state depthstencil;
 185       memset(&depthstencil, 0, sizeof(depthstencil));
 186       cso_set_depth_stencil_alpha(st_ctx->cso, &depthstencil);
 187    }
 188
 189    /* rasterizer */
 190    {
 191       struct pipe_rasterizer_state rasterizer;
 192       memset(&rasterizer, 0, sizeof(rasterizer));
 193       rasterizer.front_winding = PIPE_WINDING_CW;
 194       rasterizer.cull_mode = PIPE_WINDING_NONE;
 195       rasterizer.bypass_clipping = 1;
 196       /*rasterizer.bypass_vs = 1;*/
 197       cso_set_rasterizer(st_ctx->cso, &rasterizer);
 198    }
 199
 200    /* identity viewport */
 201    {
 202       struct pipe_viewport_state viewport;
 203       viewport.scale[0] = 1.0;
 204       viewport.scale[1] = 1.0;
 205       viewport.scale[2] = 1.0;
 206       viewport.scale[3] = 1.0;
 207       viewport.translate[0] = 0.0;
 208       viewport.translate[1] = 0.0;
 209       viewport.translate[2] = 0.0;
 210       viewport.translate[3] = 0.0;
 211       cso_set_viewport(st_ctx->cso, &viewport);
 212    }
 213
 214    /* samplers */
 215    {
 216       struct pipe_sampler_state sampler;
 217       unsigned i;
 218       memset(&sampler, 0, sizeof(sampler));
 219       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 220       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 221       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 222       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 223       sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 224       sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 225       sampler.normalized_coords = 1;
 226       for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 227          cso_single_sampler(st_ctx->cso, i, &sampler);
 228       cso_single_sampler_done(st_ctx->cso);
 229    }
 230
 231    /* default textures */
 232    {
 233       struct pipe_screen *screen = st_dev->screen;
 234       struct pipe_texture templat;
 235       struct pipe_surface *surface;
 236       unsigned i;
 237
 238       memset( &templat, 0, sizeof( templat ) );
 239       templat.target = PIPE_TEXTURE_2D;
 240       templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
 241       templat.block.size = 4;
 242       templat.block.width = 1;
 243       templat.block.height = 1;
 244       templat.width[0] = 1;
 245       templat.height[0] = 1;
 246       templat.depth[0] = 1;
 247       templat.last_level = 0;
 248
 249       st_ctx->default_texture = screen->texture_create( screen, &templat );
 250       if(st_ctx->default_texture) {
 251          surface = screen->get_tex_surface( screen,
 252                                             st_ctx->default_texture, 0, 0, 0,
 253                                             PIPE_BUFFER_USAGE_CPU_WRITE );
 254          if(surface) {
 255             uint32_t *map;
 256             map = (uint32_t *) pipe_surface_map(surface, PIPE_BUFFER_USAGE_CPU_WRITE );
 257             if(map) {
 258                *map = 0x00000000;
 259                pipe_surface_unmap( surface );
 260             }
 261             pipe_surface_reference(&surface, NULL);
 262          }
 263       }
 264
 265       for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 266          pipe_texture_reference(&st_ctx->sampler_textures[i], st_ctx->default_texture);
 267
 268       cso_set_sampler_textures(st_ctx->cso, PIPE_MAX_SAMPLERS, st_ctx->sampler_textures);
 269    }
 270
 271    /* vertex shader */
 272    {
 273       struct pipe_shader_state vert_shader;
 274
 275       const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
 276                                       TGSI_SEMANTIC_GENERIC };
 277       const uint semantic_indexes[] = { 0, 0 };
 278       st_ctx->vs = util_make_vertex_passthrough_shader(st_ctx->pipe,
 279                                                        2,
 280                                                        semantic_names,
 281                                                        semantic_indexes,
 282                                                        &vert_shader);
 283       cso_set_vertex_shader_handle(st_ctx->cso, st_ctx->vs);
 284    }
 285
 286    /* fragment shader */
 287    {
 288       struct pipe_shader_state frag_shader;
 289       st_ctx->fs = util_make_fragment_passthrough_shader(st_ctx->pipe,
 290                                                          &frag_shader);
 291       cso_set_fragment_shader_handle(st_ctx->cso, st_ctx->fs);
 292    }
 293
 294    return st_ctx;
 295 }
 296
 297
 298 void
 299 st_buffer_destroy(struct st_buffer *st_buf)
 300 {
 301    if(st_buf) {
 302       pipe_buffer_reference(&st_buf->buffer, NULL);
 303       FREE(st_buf);
 304    }
 305 }
 306
 307
 308 struct st_buffer *
 309 st_buffer_create(struct st_device *st_dev,
 310                  unsigned alignment, unsigned usage, unsigned size)
 311 {
 312    struct pipe_screen *screen = st_dev->screen;
 313    struct st_buffer *st_buf;
 314
 315    st_buf = CALLOC_STRUCT(st_buffer);
 316    if(!st_buf)
 317       return NULL;
 318
 319    st_buf->st_dev = st_dev;
 320
 321    st_buf->buffer = pipe_buffer_create(screen, alignment, usage, size);
 322    if(!st_buf->buffer) {
 323       st_buffer_destroy(st_buf);
 324       return NULL;
 325    }
 326
 327    return st_buf;
 328 }
 329