/************************************************************************** * * 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 "util/u_math.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 vs_input_count, unsigned vertex_size ) { struct draw_context *draw = fetch->draw; unsigned nr_inputs; 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); } assert( draw->pt.nr_vertex_elements >= vs_input_count ); nr_inputs = MIN2( vs_input_count, draw->pt.nr_vertex_elements ); for (i = 0; i < nr_inputs; 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, UNDEFINED_VERTEX_ID, { .0f, .0f, .0f, .0f } }; fetch->translate->set_buffer(fetch->translate, draw->pt.nr_vertex_buffers, &vh, 0); } } } 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].stride ); } translate->run_elts( translate, elts, count, verts ); /* Extract edgeflag values from vertex data into the header. */ if (fetch->need_edgeflags) { extract_edge_flags( fetch, count ); } } 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].stride ); } translate->run( translate, start, count, verts ); /* Extract edgeflag values from vertex data into the header. XXX: * this should be done after the vertex shader is run. * Bypass-vs-and-clip interaction with pipeline??? */ if (fetch->need_edgeflags) { extract_edge_flags( fetch, count ); } } 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); }