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-rw-r--r--src/gallium/state_trackers/python/st_device.c169
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 0000000000..430a7af176
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+++ 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;
+}