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-rw-r--r--src/gallium/state_trackers/python/st_device.c305
1 files changed, 305 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..dce24bc17d
--- /dev/null
+++ b/src/gallium/state_trackers/python/st_device.c
@@ -0,0 +1,305 @@
+/**************************************************************************
+ *
+ * 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_screen.h"
+#include "pipe/p_context.h"
+#include "pipe/p_shader_tokens.h"
+#include "util/u_inlines.h"
+#include "cso_cache/cso_context.h"
+#include "util/u_inlines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_sampler.h"
+#include "util/u_simple_shaders.h"
+#include "trace/tr_public.h"
+
+#include "st_device.h"
+#include "st_winsys.h"
+
+
+static void
+st_device_really_destroy(struct st_device *st_dev)
+{
+ if(st_dev->screen) {
+ /* FIXME: Don't really destroy until we keep track of every single
+ * reference or we end up causing a segmentation fault every time
+ * python exits. */
+#if 0
+ st_dev->screen->destroy(st_dev->screen);
+#endif
+ }
+
+ FREE(st_dev);
+}
+
+
+static void
+st_device_reference(struct st_device **ptr, struct st_device *st_dev)
+{
+ struct st_device *old_dev = *ptr;
+
+ if (pipe_reference(&(*ptr)->reference, &st_dev->reference))
+ st_device_really_destroy(old_dev);
+ *ptr = st_dev;
+}
+
+
+void
+st_device_destroy(struct st_device *st_dev)
+{
+ st_device_reference(&st_dev, NULL);
+}
+
+
+struct st_device *
+st_device_create(boolean hardware)
+{
+ struct pipe_screen *screen;
+ struct st_device *st_dev;
+
+ if (hardware)
+ screen = st_hardware_screen_create();
+ else
+ screen = st_software_screen_create("softpipe");
+
+ screen = trace_screen_create(screen);
+ if (!screen)
+ goto no_screen;
+
+ st_dev = CALLOC_STRUCT(st_device);
+ if (!st_dev)
+ goto no_device;
+
+ pipe_reference_init(&st_dev->reference, 1);
+ st_dev->screen = screen;
+
+ return st_dev;
+
+no_device:
+ screen->destroy(screen);
+no_screen:
+ return NULL;
+}
+
+
+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->cso) {
+ cso_delete_vertex_shader(st_ctx->cso, st_ctx->vs);
+ cso_delete_fragment_shader(st_ctx->cso, st_ctx->fs);
+
+ cso_destroy_context(st_ctx->cso);
+ }
+
+ if(st_ctx->pipe)
+ st_ctx->pipe->destroy(st_ctx->pipe);
+
+ for(i = 0; i < PIPE_MAX_SAMPLERS; ++i)
+ pipe_sampler_view_reference(&st_ctx->fragment_sampler_views[i], NULL);
+ for(i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; ++i)
+ pipe_sampler_view_reference(&st_ctx->vertex_sampler_views[i], NULL);
+ pipe_resource_reference(&st_ctx->default_texture, NULL);
+
+ FREE(st_ctx);
+
+ st_device_reference(&st_dev, NULL);
+ }
+}
+
+
+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_device_reference(&st_ctx->st_dev, st_dev);
+
+ st_ctx->pipe = st_dev->screen->context_create(st_dev->screen, NULL);
+ if(!st_ctx->pipe) {
+ st_context_destroy(st_ctx);
+ return NULL;
+ }
+
+ st_ctx->cso = cso_create_context(st_ctx->pipe);
+ if(!st_ctx->cso) {
+ st_context_destroy(st_ctx);
+ return NULL;
+ }
+
+ /* disabled blending/masking */
+ {
+ struct pipe_blend_state blend;
+ memset(&blend, 0, sizeof(blend));
+ blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
+ blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
+ blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
+ blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
+ blend.rt[0].colormask = PIPE_MASK_RGBA;
+ cso_set_blend(st_ctx->cso, &blend);
+ }
+
+ /* no-op depth/stencil/alpha */
+ {
+ struct pipe_depth_stencil_alpha_state depthstencil;
+ memset(&depthstencil, 0, sizeof(depthstencil));
+ cso_set_depth_stencil_alpha(st_ctx->cso, &depthstencil);
+ }
+
+ /* rasterizer */
+ {
+ struct pipe_rasterizer_state rasterizer;
+ memset(&rasterizer, 0, sizeof(rasterizer));
+ rasterizer.cull_face = PIPE_FACE_NONE;
+ cso_set_rasterizer(st_ctx->cso, &rasterizer);
+ }
+
+ /* clip */
+ {
+ struct pipe_clip_state clip;
+ memset(&clip, 0, sizeof(clip));
+ st_ctx->pipe->set_clip_state(st_ctx->pipe, &clip);
+ }
+
+ /* identity viewport */
+ {
+ struct pipe_viewport_state viewport;
+ viewport.scale[0] = 1.0;
+ viewport.scale[1] = 1.0;
+ viewport.scale[2] = 1.0;
+ viewport.scale[3] = 1.0;
+ viewport.translate[0] = 0.0;
+ viewport.translate[1] = 0.0;
+ viewport.translate[2] = 0.0;
+ viewport.translate[3] = 0.0;
+ cso_set_viewport(st_ctx->cso, &viewport);
+ }
+
+ /* samplers */
+ {
+ struct pipe_sampler_state sampler;
+ unsigned i;
+ memset(&sampler, 0, sizeof(sampler));
+ sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
+ sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
+ sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
+ sampler.normalized_coords = 1;
+ for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
+ cso_single_sampler(st_ctx->cso, i, &sampler);
+ cso_single_sampler_done(st_ctx->cso);
+ }
+
+ /* default textures */
+ {
+ struct pipe_context *pipe = st_ctx->pipe;
+ struct pipe_screen *screen = st_dev->screen;
+ struct pipe_resource templat;
+ struct pipe_sampler_view view_templ;
+ struct pipe_sampler_view *view;
+ unsigned i;
+
+ memset( &templat, 0, sizeof( templat ) );
+ templat.target = PIPE_TEXTURE_2D;
+ templat.format = PIPE_FORMAT_B8G8R8A8_UNORM;
+ templat.width0 = 1;
+ templat.height0 = 1;
+ templat.depth0 = 1;
+ templat.last_level = 0;
+ templat.bind = PIPE_BIND_SAMPLER_VIEW;
+
+ st_ctx->default_texture = screen->resource_create( screen, &templat );
+ if(st_ctx->default_texture) {
+ struct pipe_box box;
+ uint32_t zero = 0;
+
+ u_box_origin_2d( 1, 1, &box );
+
+ pipe->transfer_inline_write(pipe,
+ st_ctx->default_texture,
+ u_subresource(0,0),
+ PIPE_TRANSFER_WRITE,
+ &box,
+ &zero,
+ sizeof zero,
+ 0);
+ }
+
+ u_sampler_view_default_template(&view_templ,
+ st_ctx->default_texture,
+ st_ctx->default_texture->format);
+ view = st_ctx->pipe->create_sampler_view(st_ctx->pipe,
+ st_ctx->default_texture,
+ &view_templ);
+
+ for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
+ pipe_sampler_view_reference(&st_ctx->fragment_sampler_views[i], view);
+ for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++)
+ pipe_sampler_view_reference(&st_ctx->vertex_sampler_views[i], view);
+
+ st_ctx->pipe->set_fragment_sampler_views(st_ctx->pipe,
+ PIPE_MAX_SAMPLERS,
+ st_ctx->fragment_sampler_views);
+ st_ctx->pipe->set_vertex_sampler_views(st_ctx->pipe,
+ PIPE_MAX_VERTEX_SAMPLERS,
+ st_ctx->vertex_sampler_views);
+
+ pipe_sampler_view_reference(&view, NULL);
+ }
+
+ /* 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);
+ cso_set_vertex_shader_handle(st_ctx->cso, st_ctx->vs);
+ }
+
+ /* fragment shader */
+ {
+ st_ctx->fs = util_make_fragment_passthrough_shader(st_ctx->pipe);
+ cso_set_fragment_shader_handle(st_ctx->cso, st_ctx->fs);
+ }
+
+ return st_ctx;
+}
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