+++ /dev/null
-/**************************************************************************
- *
- * Copyright 2007 VMware, Inc.
- * 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 VMWARE 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.
- *
- **************************************************************************/
-
- /*
- * Authors:
- * Keith Whitwell <keithw@vmware.com>
- */
-
-#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 "draw/draw_gs.h"
-#include "translate/translate.h"
-#include "translate/translate_cache.h"
-
-/* The simplest 'middle end' in the new vertex code.
- *
- * The responsibilities of a middle end are to:
- * - perform vertex fetch using
- * - draw vertex element/buffer state
- * - a list of fetch indices we received as an input
- * - run the vertex shader
- * - cliptest,
- * - clip coord calculation
- * - viewport transformation
- * - if necessary, run the primitive pipeline, passing it:
- * - a linear array of vertex_header vertices constructed here
- * - a set of draw indices we received as an input
- * - otherwise, drive the hw backend,
- * - allocate space for hardware format vertices
- * - translate the vertex-shader output vertices to hw format
- * - calling the backend draw functions.
- *
- * For convenience, we provide a helper function to drive the hardware
- * backend given similar inputs to those required to run the pipeline.
- *
- * In the case of passthrough mode, many of these actions are disabled
- * or noops, so we end up doing:
- *
- * - perform vertex fetch
- * - drive the hw backend
- *
- * IE, basically just vertex fetch to post-vs-format vertices,
- * followed by a call to the backend helper function.
- */
-
-
-struct fetch_emit_middle_end {
- struct draw_pt_middle_end base;
- struct draw_context *draw;
-
- struct translate *translate;
- const struct vertex_info *vinfo;
-
- /* Cache point size somewhere it's address won't change:
- */
- float point_size;
-
- struct translate_cache *cache;
-};
-
-
-static void fetch_emit_prepare( struct draw_pt_middle_end *middle,
- unsigned prim,
- unsigned opt,
- unsigned *max_vertices )
-{
- struct fetch_emit_middle_end *feme = (struct fetch_emit_middle_end *)middle;
- struct draw_context *draw = feme->draw;
- const struct vertex_info *vinfo;
- unsigned i, dst_offset;
- struct translate_key key;
- unsigned gs_out_prim = (draw->gs.geometry_shader ?
- draw->gs.geometry_shader->output_primitive :
- prim);
-
- draw->render->set_primitive(draw->render, gs_out_prim);
-
- /* Must do this after set_primitive() above:
- */
- vinfo = feme->vinfo = draw->render->get_vertex_info(draw->render);
-
- /* Transform from API vertices to HW vertices, skipping the
- * pipeline_vertex intermediate step.
- */
- dst_offset = 0;
- memset(&key, 0, sizeof(key));
-
- for (i = 0; i < vinfo->num_attribs; i++) {
- const struct pipe_vertex_element *src = &draw->pt.vertex_element[vinfo->attrib[i].src_index];
-
- unsigned emit_sz = 0;
- unsigned input_format = src->src_format;
- unsigned input_buffer = src->vertex_buffer_index;
- unsigned input_offset = src->src_offset;
- unsigned output_format;
-
- output_format = draw_translate_vinfo_format(vinfo->attrib[i].emit);
- emit_sz = draw_translate_vinfo_size(vinfo->attrib[i].emit);
-
- if (vinfo->attrib[i].emit == EMIT_OMIT)
- continue;
-
- if (vinfo->attrib[i].emit == EMIT_1F_PSIZE) {
- input_format = PIPE_FORMAT_R32_FLOAT;
- input_buffer = draw->pt.nr_vertex_buffers;
- input_offset = 0;
- }
-
- key.element[i].type = TRANSLATE_ELEMENT_NORMAL;
- key.element[i].input_format = input_format;
- key.element[i].input_buffer = input_buffer;
- key.element[i].input_offset = input_offset;
- key.element[i].instance_divisor = src->instance_divisor;
- key.element[i].output_format = output_format;
- key.element[i].output_offset = dst_offset;
-
- dst_offset += emit_sz;
- }
-
- key.nr_elements = vinfo->num_attribs;
- key.output_stride = vinfo->size * 4;
-
- /* Don't bother with caching at this stage:
- */
- if (!feme->translate ||
- translate_key_compare(&feme->translate->key, &key) != 0)
- {
- translate_key_sanitize(&key);
- feme->translate = translate_cache_find(feme->cache,
- &key);
-
- feme->translate->set_buffer(feme->translate,
- draw->pt.nr_vertex_buffers,
- &feme->point_size,
- 0,
- ~0);
- }
-
- feme->point_size = draw->rasterizer->point_size;
-
- for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
- feme->translate->set_buffer(feme->translate,
- i,
- ((char *)draw->pt.user.vbuffer[i].map +
- draw->pt.vertex_buffer[i].buffer_offset),
- draw->pt.vertex_buffer[i].stride,
- draw->pt.max_index);
- }
-
- *max_vertices = (draw->render->max_vertex_buffer_bytes /
- (vinfo->size * 4));
-}
-
-
-static void
-fetch_emit_bind_parameters(struct draw_pt_middle_end *middle)
-{
- /* No-op? */
-}
-
-
-static void fetch_emit_run( struct draw_pt_middle_end *middle,
- const unsigned *fetch_elts,
- unsigned fetch_count,
- const ushort *draw_elts,
- unsigned draw_count,
- unsigned prim_flags )
-{
- struct fetch_emit_middle_end *feme = (struct fetch_emit_middle_end *)middle;
- struct draw_context *draw = feme->draw;
- void *hw_verts;
-
- /* XXX: need to flush to get prim_vbuf.c to release its allocation??
- */
- draw_do_flush( draw, DRAW_FLUSH_BACKEND );
-
- draw->render->allocate_vertices( draw->render,
- (ushort)feme->translate->key.output_stride,
- (ushort)fetch_count );
-
- hw_verts = draw->render->map_vertices( draw->render );
- if (!hw_verts) {
- debug_warn_once("vertex buffer allocation failed (out of memory?)");
- return;
- }
-
- /* Single routine to fetch vertices and emit HW verts.
- */
- feme->translate->run_elts( feme->translate,
- fetch_elts,
- fetch_count,
- draw->start_instance,
- draw->instance_id,
- hw_verts );
-
- if (0) {
- unsigned i;
- for (i = 0; i < fetch_count; i++) {
- debug_printf("\n\nvertex %d:\n", i);
- draw_dump_emitted_vertex( feme->vinfo,
- (const uint8_t *)hw_verts + feme->vinfo->size * 4 * i );
- }
- }
-
- draw->render->unmap_vertices( draw->render,
- 0,
- (ushort)(fetch_count - 1) );
-
- /* XXX: Draw arrays path to avoid re-emitting index list again and
- * again.
- */
- draw->render->draw_elements( draw->render,
- draw_elts,
- draw_count );
-
- /* Done -- that was easy, wasn't it:
- */
- draw->render->release_vertices( draw->render );
-
-}
-
-
-static void fetch_emit_run_linear( struct draw_pt_middle_end *middle,
- unsigned start,
- unsigned count,
- unsigned prim_flags )
-{
- struct fetch_emit_middle_end *feme = (struct fetch_emit_middle_end *)middle;
- struct draw_context *draw = feme->draw;
- void *hw_verts;
-
- /* XXX: need to flush to get prim_vbuf.c to release its allocation??
- */
- draw_do_flush( draw, DRAW_FLUSH_BACKEND );
-
- if (!draw->render->allocate_vertices( draw->render,
- (ushort)feme->translate->key.output_stride,
- (ushort)count ))
- goto fail;
-
- hw_verts = draw->render->map_vertices( draw->render );
- if (!hw_verts)
- goto fail;
-
- /* Single routine to fetch vertices and emit HW verts.
- */
- feme->translate->run( feme->translate,
- start,
- count,
- draw->start_instance,
- draw->instance_id,
- hw_verts );
-
- if (0) {
- unsigned i;
- for (i = 0; i < count; i++) {
- debug_printf("\n\nvertex %d:\n", i);
- draw_dump_emitted_vertex( feme->vinfo,
- (const uint8_t *)hw_verts + feme->vinfo->size * 4 * i );
- }
- }
-
- draw->render->unmap_vertices( draw->render, 0, count - 1 );
-
- /* XXX: Draw arrays path to avoid re-emitting index list again and
- * again.
- */
- draw->render->draw_arrays( draw->render, 0, count );
-
- /* Done -- that was easy, wasn't it:
- */
- draw->render->release_vertices( draw->render );
- return;
-
-fail:
- debug_warn_once("allocate or map of vertex buffer failed (out of memory?)");
- return;
-}
-
-
-static boolean fetch_emit_run_linear_elts( struct draw_pt_middle_end *middle,
- unsigned start,
- unsigned count,
- const ushort *draw_elts,
- unsigned draw_count,
- unsigned prim_flags )
-{
- struct fetch_emit_middle_end *feme = (struct fetch_emit_middle_end *)middle;
- struct draw_context *draw = feme->draw;
- void *hw_verts;
-
- /* XXX: need to flush to get prim_vbuf.c to release its allocation??
- */
- draw_do_flush( draw, DRAW_FLUSH_BACKEND );
-
- if (!draw->render->allocate_vertices( draw->render,
- (ushort)feme->translate->key.output_stride,
- (ushort)count ))
- return FALSE;
-
- hw_verts = draw->render->map_vertices( draw->render );
- if (!hw_verts)
- return FALSE;
-
- /* Single routine to fetch vertices and emit HW verts.
- */
- feme->translate->run( feme->translate,
- start,
- count,
- draw->start_instance,
- draw->instance_id,
- hw_verts );
-
- draw->render->unmap_vertices( draw->render, 0, (ushort)(count - 1) );
-
- /* XXX: Draw arrays path to avoid re-emitting index list again and
- * again.
- */
- draw->render->draw_elements( draw->render,
- draw_elts,
- draw_count );
-
- /* Done -- that was easy, wasn't it:
- */
- draw->render->release_vertices( draw->render );
-
- return TRUE;
-}
-
-
-static void fetch_emit_finish( struct draw_pt_middle_end *middle )
-{
- /* nothing to do */
-}
-
-
-static void fetch_emit_destroy( struct draw_pt_middle_end *middle )
-{
- struct fetch_emit_middle_end *feme = (struct fetch_emit_middle_end *)middle;
-
- if (feme->cache)
- translate_cache_destroy(feme->cache);
-
- FREE(middle);
-}
-
-
-struct draw_pt_middle_end *draw_pt_fetch_emit( struct draw_context *draw )
-{
- struct fetch_emit_middle_end *fetch_emit = CALLOC_STRUCT( fetch_emit_middle_end );
- if (!fetch_emit)
- return NULL;
-
- fetch_emit->cache = translate_cache_create();
- if (!fetch_emit->cache) {
- FREE(fetch_emit);
- return NULL;
- }
-
- fetch_emit->base.prepare = fetch_emit_prepare;
- fetch_emit->base.bind_parameters = fetch_emit_bind_parameters;
- fetch_emit->base.run = fetch_emit_run;
- fetch_emit->base.run_linear = fetch_emit_run_linear;
- fetch_emit->base.run_linear_elts = fetch_emit_run_linear_elts;
- fetch_emit->base.finish = fetch_emit_finish;
- fetch_emit->base.destroy = fetch_emit_destroy;
-
- fetch_emit->draw = draw;
-
- return &fetch_emit->base;
-}
-