diff options
Diffstat (limited to 'src/gallium/state_trackers/python/st_device.c')
| -rw-r--r-- | src/gallium/state_trackers/python/st_device.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/python/st_device.c b/src/gallium/state_trackers/python/st_device.c new file mode 100644 index 00000000000..430a7af1765 --- /dev/null +++ b/src/gallium/state_trackers/python/st_device.c @@ -0,0 +1,169 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + + +#include "pipe/p_util.h" +#include "pipe/p_winsys.h" +#include "pipe/p_context.h" +#include "pipe/p_shader_tokens.h" +#include "pipe/p_inlines.h" +#include "cso_cache/cso_context.h" +#include "util/u_simple_shaders.h" +#include "st_device.h" +#include "st_winsys.h" + + +static void +st_device_really_destroy(struct st_device *st_dev) +{ + if(st_dev->screen) + st_dev->st_ws->screen_destroy(st_dev->screen); + + FREE(st_dev); +} + + +void +st_device_destroy(struct st_device *st_dev) +{ + if(!--st_dev->refcount) + st_device_really_destroy(st_dev); +} + + +static struct st_device * +st_device_create_from_st_winsys(const struct st_winsys *st_ws) +{ + struct st_device *st_dev; + + if(!st_ws->screen_create || + !st_ws->screen_destroy || + !st_ws->context_create || + !st_ws->context_destroy) + return NULL; + + st_dev = CALLOC_STRUCT(st_device); + if(!st_dev) + return NULL; + + st_dev->st_ws = st_ws; + + st_dev->screen = st_ws->screen_create(); + if(!st_dev->screen) + st_device_destroy(st_dev); + + return st_dev; +} + + +struct st_device * +st_device_create(boolean hardware) { +#if 0 + if(hardware) + return st_device_create_from_st_winsys(&st_hardware_winsys); + else +#endif + return st_device_create_from_st_winsys(&st_software_winsys); +} + + +void +st_context_destroy(struct st_context *st_ctx) +{ + unsigned i; + + if(st_ctx) { + struct st_device *st_dev = st_ctx->st_dev; + + if(st_ctx->vs) { + st_ctx->pipe->bind_vs_state(st_ctx->pipe, NULL); + st_ctx->pipe->delete_vs_state(st_ctx->pipe, st_ctx->vs); + } + + if(st_ctx->fs) { + st_ctx->pipe->bind_fs_state(st_ctx->pipe, NULL); + st_ctx->pipe->delete_fs_state(st_ctx->pipe, st_ctx->fs); + } + + if(st_ctx->cso) + cso_destroy_context(st_ctx->cso); + + if(st_ctx->pipe) + st_ctx->st_dev->st_ws->context_destroy(st_ctx->pipe); + + for(i = 0; i < PIPE_MAX_SAMPLERS; ++i) + pipe_texture_reference(&st_ctx->sampler_textures[i], NULL); + + FREE(st_ctx); + + if(!--st_dev->refcount) + st_device_really_destroy(st_dev); + } +} + + +struct st_context * +st_context_create(struct st_device *st_dev) +{ + struct st_context *st_ctx; + + st_ctx = CALLOC_STRUCT(st_context); + if(!st_ctx) + return NULL; + + st_ctx->st_dev = st_dev; + ++st_dev->refcount; + + st_ctx->pipe = st_dev->st_ws->context_create(st_dev->screen); + if(!st_ctx->pipe) + st_context_destroy(st_ctx); + + st_ctx->cso = cso_create_context(st_ctx->pipe); + if(!st_ctx->cso) + st_context_destroy(st_ctx); + + /* vertex shader */ + { + const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, + TGSI_SEMANTIC_GENERIC }; + const uint semantic_indexes[] = { 0, 0 }; + st_ctx->vs = util_make_vertex_passthrough_shader(st_ctx->pipe, + 2, + semantic_names, + semantic_indexes, + &st_ctx->vert_shader); + } + + /* fragment shader */ + st_ctx->fs = util_make_fragment_passthrough_shader(st_ctx->pipe, + &st_ctx->frag_shader); + + st_ctx->pipe->bind_fs_state(st_ctx->pipe, st_ctx->fs); + st_ctx->pipe->bind_vs_state(st_ctx->pipe, st_ctx->vs); + + return st_ctx; +} |