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-rw-r--r--src/gallium/auxiliary/draw/draw_pt_fetch.c228
1 files changed, 228 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch.c b/src/gallium/auxiliary/draw/draw_pt_fetch.c
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+++ b/src/gallium/auxiliary/draw/draw_pt_fetch.c
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+/**************************************************************************
+ *
+ * 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 "util/u_memory.h"
+#include "draw/draw_context.h"
+#include "draw/draw_private.h"
+#include "draw/draw_vbuf.h"
+#include "draw/draw_vertex.h"
+#include "draw/draw_pt.h"
+#include "translate/translate.h"
+#include "translate/translate_cache.h"
+
+
+struct pt_fetch {
+ struct draw_context *draw;
+
+ struct translate *translate;
+
+ unsigned vertex_size;
+ boolean need_edgeflags;
+
+ struct translate_cache *cache;
+};
+
+/* Perform the fetch from API vertex elements & vertex buffers, to a
+ * contiguous set of float[4] attributes as required for the
+ * vertex_shader->run_linear() method.
+ *
+ * This is used in all cases except pure passthrough
+ * (draw_pt_fetch_emit.c) which has its own version to translate
+ * directly to hw vertices.
+ *
+ */
+void draw_pt_fetch_prepare( struct pt_fetch *fetch,
+ unsigned vertex_size )
+{
+ struct draw_context *draw = fetch->draw;
+ unsigned i, nr = 0;
+ unsigned dst_offset = 0;
+ struct translate_key key;
+
+ fetch->vertex_size = vertex_size;
+
+ /* Always emit/leave space for a vertex header.
+ *
+ * It's worth considering whether the vertex headers should contain
+ * a pointer to the 'data', rather than having it inline.
+ * Something to look at after we've fully switched over to the pt
+ * paths.
+ */
+ {
+ /* Need to set header->vertex_id = 0xffff somehow.
+ */
+ key.element[nr].input_format = PIPE_FORMAT_R32_FLOAT;
+ key.element[nr].input_buffer = draw->pt.nr_vertex_buffers;
+ key.element[nr].input_offset = 0;
+ key.element[nr].output_format = PIPE_FORMAT_R32_FLOAT;
+ key.element[nr].output_offset = dst_offset;
+ dst_offset += 1 * sizeof(float);
+ nr++;
+
+
+ /* Just leave the clip[] array untouched.
+ */
+ dst_offset += 4 * sizeof(float);
+ }
+
+
+ for (i = 0; i < draw->pt.nr_vertex_elements; i++) {
+ key.element[nr].input_format = draw->pt.vertex_element[i].src_format;
+ key.element[nr].input_buffer = draw->pt.vertex_element[i].vertex_buffer_index;
+ key.element[nr].input_offset = draw->pt.vertex_element[i].src_offset;
+ key.element[nr].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ key.element[nr].output_offset = dst_offset;
+
+ dst_offset += 4 * sizeof(float);
+ nr++;
+ }
+
+ assert(dst_offset <= vertex_size);
+
+ key.nr_elements = nr;
+ key.output_stride = vertex_size;
+
+
+ if (!fetch->translate ||
+ translate_key_compare(&fetch->translate->key, &key) != 0)
+ {
+ translate_key_sanitize(&key);
+ fetch->translate = translate_cache_find(fetch->cache, &key);
+
+ {
+ static struct vertex_header vh = { 0, 1, 0, 0xffff };
+ fetch->translate->set_buffer(fetch->translate,
+ draw->pt.nr_vertex_buffers,
+ &vh,
+ 0);
+ }
+ }
+
+ fetch->need_edgeflags = ((draw->rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL ||
+ draw->rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL) &&
+ draw->pt.user.edgeflag);
+}
+
+
+
+
+void draw_pt_fetch_run( struct pt_fetch *fetch,
+ const unsigned *elts,
+ unsigned count,
+ char *verts )
+{
+ struct draw_context *draw = fetch->draw;
+ struct translate *translate = fetch->translate;
+ unsigned i;
+
+ for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
+ translate->set_buffer(translate,
+ i,
+ ((char *)draw->pt.user.vbuffer[i] +
+ draw->pt.vertex_buffer[i].buffer_offset),
+ draw->pt.vertex_buffer[i].pitch );
+ }
+
+ translate->run_elts( translate,
+ elts,
+ count,
+ verts );
+
+ /* Edgeflags are hard to fit into a translate program, populate
+ * them separately if required. In the setup above they are
+ * defaulted to one, so only need this if there is reason to change
+ * that default:
+ */
+ if (fetch->need_edgeflags) {
+ for (i = 0; i < count; i++) {
+ struct vertex_header *vh = (struct vertex_header *)(verts + i * fetch->vertex_size);
+ vh->edgeflag = draw_pt_get_edgeflag( draw, elts[i] );
+ }
+ }
+}
+
+
+void draw_pt_fetch_run_linear( struct pt_fetch *fetch,
+ unsigned start,
+ unsigned count,
+ char *verts )
+{
+ struct draw_context *draw = fetch->draw;
+ struct translate *translate = fetch->translate;
+ unsigned i;
+
+ for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
+ translate->set_buffer(translate,
+ i,
+ ((char *)draw->pt.user.vbuffer[i] +
+ draw->pt.vertex_buffer[i].buffer_offset),
+ draw->pt.vertex_buffer[i].pitch );
+ }
+
+ translate->run( translate,
+ start,
+ count,
+ verts );
+
+ /* Edgeflags are hard to fit into a translate program, populate
+ * them separately if required. In the setup above they are
+ * defaulted to one, so only need this if there is reason to change
+ * that default:
+ */
+ if (fetch->need_edgeflags) {
+ for (i = 0; i < count; i++) {
+ struct vertex_header *vh = (struct vertex_header *)(verts + i * fetch->vertex_size);
+ vh->edgeflag = draw_pt_get_edgeflag( draw, start + i );
+ }
+ }
+}
+
+
+struct pt_fetch *draw_pt_fetch_create( struct draw_context *draw )
+{
+ struct pt_fetch *fetch = CALLOC_STRUCT(pt_fetch);
+ if (!fetch)
+ return NULL;
+
+ fetch->draw = draw;
+ fetch->cache = translate_cache_create();
+ if (!fetch->cache) {
+ FREE(fetch);
+ return NULL;
+ }
+
+ return fetch;
+}
+
+void draw_pt_fetch_destroy( struct pt_fetch *fetch )
+{
+ if (fetch->cache)
+ translate_cache_destroy(fetch->cache);
+
+ FREE(fetch);
+}
+
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