diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt_fetch.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_fetch.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch.c b/src/gallium/auxiliary/draw/draw_pt_fetch.c new file mode 100644 index 0000000000..a7553023b8 --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_pt_fetch.c @@ -0,0 +1,175 @@ +/************************************************************************** + * + * 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 "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" + + +struct pt_fetch { + struct draw_context *draw; + + struct translate *translate; + + unsigned vertex_size; +}; + + + +/* 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, + boolean emit_header, + 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; + + memset(&key, 0, sizeof(key)); + + /* If PT_SHADE is not set, then we are creating post-shader + * vertices, meaning that we need to 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. + */ + if (emit_header) + { + /* Need to set header->vertex_id = 0xffff somehow. + */ + key.element[nr].input_format = PIPE_FORMAT_R32_FLOAT; + key.element[nr].input_buffer = draw->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->nr_vertex_elements; i++) { + key.element[nr].input_format = draw->vertex_element[i].src_format; + key.element[nr].input_buffer = draw->vertex_element[i].vertex_buffer_index; + key.element[nr].input_offset = draw->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; + + + /* Don't bother with caching at this stage: + */ + if (!fetch->translate || + memcmp(&fetch->translate->key, &key, sizeof(key)) != 0) + { + if (fetch->translate) + fetch->translate->release(fetch->translate); + + fetch->translate = translate_generic_create( &key ); + + if (emit_header) { + static struct vertex_header vh = { 0, 0, 0, 0xffff }; + fetch->translate->set_buffer(fetch->translate, + draw->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->nr_vertex_buffers; i++) { + translate->set_buffer(translate, + i, + ((char *)draw->user.vbuffer[i] + + draw->vertex_buffer[i].buffer_offset), + draw->vertex_buffer[i].pitch ); + } + + translate->run_elts( translate, + elts, + count, + verts ); +} + + +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; + return fetch; +} + +void draw_pt_fetch_destroy( struct pt_fetch *fetch ) +{ + FREE(fetch); +} + |