diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/pipe/draw/draw_vbuf.c | 399 | ||||
| -rw-r--r-- | src/mesa/pipe/draw/draw_vbuf.h | 106 | ||||
| -rw-r--r-- | src/mesa/sources | 1 |
3 files changed, 506 insertions, 0 deletions
diff --git a/src/mesa/pipe/draw/draw_vbuf.c b/src/mesa/pipe/draw/draw_vbuf.c new file mode 100644 index 00000000000..d00cdec56c6 --- /dev/null +++ b/src/mesa/pipe/draw/draw_vbuf.c @@ -0,0 +1,399 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + +/** + * \file + * Vertex buffer drawing stage. + * + * \author Jos� Fonseca <[email protected]> + * \author Keith Whitwell <[email protected]> + */ + + +#include <assert.h> + +#include "pipe/draw/draw_vbuf.h" +#include "pipe/draw/draw_private.h" +#include "pipe/draw/draw_vertex.h" +#include "pipe/p_util.h" + + +/** + * Vertex buffer emit stage. + */ +struct vbuf_stage { + struct draw_stage stage; /**< This must be first (base class) */ + + struct vbuf_render *render; + + /** Vertex size in bytes */ + unsigned vertex_size; + + /* FIXME: we have no guarantee that 'unsigned' is 32bit */ + + /** Vertices in hardware format */ + unsigned *vertices; + unsigned *vertex_ptr; + unsigned max_vertices; + unsigned nr_vertices; + + /** Indices */ + ushort *indices; + unsigned max_indices; + unsigned nr_indices; + + /** Pipe primitive */ + unsigned prim; +}; + + +/** + * Basically a cast wrapper. + */ +static INLINE struct vbuf_stage * +vbuf_stage( struct draw_stage *stage ) +{ + assert(stage); + return (struct vbuf_stage *)stage; +} + + +static void vbuf_flush_indices( struct draw_stage *stage ); +static void vbuf_flush_vertices( struct draw_stage *stage, + unsigned new_vertex_size ); + + +static INLINE boolean +overflow( void *map, void *ptr, unsigned bytes, unsigned bufsz ) +{ + unsigned long used = (unsigned long) ((char *)ptr - (char *)map); + return (used + bytes) > bufsz; +} + + +static INLINE void +check_space( struct vbuf_stage *vbuf, unsigned nr ) +{ + if (vbuf->nr_vertices + nr > vbuf->max_vertices ) + vbuf_flush_vertices(&vbuf->stage, vbuf->vertex_size ); + + if (vbuf->nr_indices + nr > vbuf->max_indices ) + vbuf_flush_indices(&vbuf->stage); +} + + +/** + * Extract the needed fields from vertex_header and emit i915 dwords. + * Recall that the vertices are constructed by the 'draw' module and + * have a couple of slots at the beginning (1-dword header, 4-dword + * clip pos) that we ignore here. + */ +static INLINE void +emit_vertex( struct vbuf_stage *vbuf, + struct vertex_header *vertex ) +{ + const struct vertex_info *vinfo = vbuf->render->get_vertex_info(vbuf->render); + + uint i; + uint count = 0; /* for debug/sanity */ + +// fprintf(stderr, "emit vertex %d to %p\n", +// vbuf->nr_vertices, vbuf->vertex_ptr); + + if(vertex->vertex_id != UNDEFINED_VERTEX_ID) { + if(vertex->vertex_id < vbuf->nr_vertices) + return; + else + fprintf(stderr, "Bad vertex id 0x%04x (>= 0x%04x)\n", + vertex->vertex_id, vbuf->nr_vertices); + return; + } + + vertex->vertex_id = vbuf->nr_vertices++; + + for (i = 0; i < vinfo->num_attribs; i++) { + switch (vinfo->format[i]) { + case FORMAT_OMIT: + /* no-op */ + break; + case FORMAT_1F: + *vbuf->vertex_ptr++ = fui(vertex->data[i][0]); + count++; + break; + case FORMAT_2F: + *vbuf->vertex_ptr++ = fui(vertex->data[i][0]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][1]); + count += 2; + break; + case FORMAT_3F: + *vbuf->vertex_ptr++ = fui(vertex->data[i][0]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][1]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][2]); + count += 3; + break; + case FORMAT_4F: + *vbuf->vertex_ptr++ = fui(vertex->data[i][0]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][1]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][2]); + *vbuf->vertex_ptr++ = fui(vertex->data[i][3]); + count += 4; + break; + case FORMAT_4UB: + *vbuf->vertex_ptr++ = pack_ub4(float_to_ubyte( vertex->data[i][2] ), + float_to_ubyte( vertex->data[i][1] ), + float_to_ubyte( vertex->data[i][0] ), + float_to_ubyte( vertex->data[i][3] )); + count += 1; + break; + default: + assert(0); + } + } + assert(count == vinfo->size); +} + + +static void +vbuf_tri( struct draw_stage *stage, + struct prim_header *prim ) +{ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + unsigned i; + + check_space( vbuf, 3 ); + + for (i = 0; i < 3; i++) { + emit_vertex( vbuf, prim->v[i] ); + + vbuf->indices[vbuf->nr_indices++] = (ushort) prim->v[i]->vertex_id; + } +} + + +static void +vbuf_line( struct draw_stage *stage, + struct prim_header *prim ) +{ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + unsigned i; + + check_space( vbuf, 2 ); + + for (i = 0; i < 2; i++) { + emit_vertex( vbuf, prim->v[i] ); + + vbuf->indices[vbuf->nr_indices++] = (ushort) prim->v[i]->vertex_id; + } +} + + +static void +vbuf_point( struct draw_stage *stage, + struct prim_header *prim ) +{ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + + check_space( vbuf, 1 ); + + emit_vertex( vbuf, prim->v[0] ); + + vbuf->indices[vbuf->nr_indices++] = (ushort) prim->v[0]->vertex_id; +} + + +static void +vbuf_first_tri( struct draw_stage *stage, + struct prim_header *prim ) +{ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + + vbuf_flush_indices( stage ); + stage->tri = vbuf_tri; + stage->tri( stage, prim ); + vbuf->prim = PIPE_PRIM_TRIANGLES; + vbuf->render->set_primitive(vbuf->render, PIPE_PRIM_TRIANGLES); +} + + +static void +vbuf_first_line( struct draw_stage *stage, + struct prim_header *prim ) +{ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + + vbuf_flush_indices( stage ); + stage->line = vbuf_line; + stage->line( stage, prim ); + vbuf->prim = PIPE_PRIM_LINES; + vbuf->render->set_primitive(vbuf->render, PIPE_PRIM_LINES); +} + + +static void +vbuf_first_point( struct draw_stage *stage, + struct prim_header *prim ) +{ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + + vbuf_flush_indices( stage ); + stage->point = vbuf_point; + stage->point( stage, prim ); + vbuf->prim = PIPE_PRIM_POINTS; + vbuf->render->set_primitive(vbuf->render, PIPE_PRIM_POINTS); +} + + +static void +vbuf_flush_indices( struct draw_stage *stage ) +{ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + + if(!vbuf->nr_indices) + return; + + assert(vbuf->vertex_ptr - vbuf->vertices == + vbuf->nr_vertices * vbuf->vertex_size / sizeof(unsigned)); + + switch(vbuf->prim) { + case PIPE_PRIM_POINTS: + break; + case PIPE_PRIM_LINES: + assert(vbuf->nr_indices % 2 == 0); + break; + case PIPE_PRIM_TRIANGLES: + assert(vbuf->nr_indices % 3 == 0); + break; + default: + assert(0); + } + + vbuf->render->draw(vbuf->render, vbuf->indices, vbuf->nr_indices); + + vbuf->nr_indices = 0; +} + + +/** + * Flush existing vertex buffer and allocate a new one. + * + * XXX: We separate flush-on-index-full and flush-on-vb-full, but may + * raise issues uploading vertices if the hardware wants to flush when + * we flush. + */ +static void +vbuf_flush_vertices( struct draw_stage *stage, + unsigned new_vertex_size ) +{ + struct vbuf_stage *vbuf = vbuf_stage( stage ); + + if(vbuf->vertices) { + vbuf_flush_indices(stage); + + /* Reset temporary vertices ids */ + if(vbuf->nr_vertices) + draw_reset_vertex_ids( vbuf->stage.draw ); + + /* Free the vertex buffer */ + vbuf->render->release_vertices(vbuf->render, + vbuf->vertices, + vbuf->vertex_size, + vbuf->nr_vertices); + vbuf->nr_vertices = 0; + vbuf->vertex_ptr = vbuf->vertices = NULL; + + } + + assert(!vbuf->nr_indices); + + /* Allocate a new vertex buffer */ + vbuf->vertex_size = new_vertex_size; + vbuf->max_vertices = vbuf->render->max_vertex_buffer_bytes / vbuf->vertex_size; + vbuf->vertices = vbuf->render->allocate_vertices(vbuf->render, + vbuf->vertex_size, + vbuf->max_vertices) ; + vbuf->vertex_ptr = vbuf->vertices; +} + + +static void +vbuf_begin( struct draw_stage *stage ) +{ + struct vbuf_stage *vbuf = vbuf_stage(stage); + const struct vertex_info *vinfo = vbuf->render->get_vertex_info(vbuf->render); + unsigned vertex_size = vinfo->size * sizeof(float); + + if(vbuf->vertex_size != vertex_size) + vbuf_flush_vertices(&vbuf->stage, vertex_size); +} + + +static void +vbuf_end( struct draw_stage *stage ) +{ + /* XXX: Overkill */ + vbuf_flush_indices( stage ); + + stage->point = vbuf_first_point; + stage->line = vbuf_first_line; + stage->tri = vbuf_first_tri; +} + + +static void +vbuf_reset_stipple_counter( struct draw_stage *stage ) +{ +} + + +/** + * Create a new primitive vbuf/render stage. + */ +struct draw_stage *draw_vbuf_stage( struct draw_context *draw, + struct vbuf_render *render ) +{ + struct vbuf_stage *vbuf = CALLOC_STRUCT(vbuf_stage); + + vbuf->stage.draw = draw; + vbuf->stage.begin = vbuf_begin; + vbuf->stage.point = vbuf_first_point; + vbuf->stage.line = vbuf_first_line; + vbuf->stage.tri = vbuf_first_tri; + vbuf->stage.end = vbuf_end; + vbuf->stage.reset_stipple_counter = vbuf_reset_stipple_counter; + + vbuf->render = render; + + assert(render->max_indices < UNDEFINED_VERTEX_ID); + vbuf->max_indices = render->max_indices; + /* FIXME: free this memory on takedown */ + vbuf->indices = MALLOC( vbuf->max_indices ); + + vbuf->vertices = NULL; + vbuf->vertex_ptr = vbuf->vertices; + + return &vbuf->stage; +} diff --git a/src/mesa/pipe/draw/draw_vbuf.h b/src/mesa/pipe/draw/draw_vbuf.h new file mode 100644 index 00000000000..43aa740f646 --- /dev/null +++ b/src/mesa/pipe/draw/draw_vbuf.h @@ -0,0 +1,106 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + +/** + * \file + * Vertex buffer drawing stage. + * + * \author Keith Whitwell <[email protected]> + * \author Jos� Fonseca <[email protected]> + */ + +#ifndef DRAW_VBUF_H_ +#define DRAW_VBUF_H_ + + +#include "pipe/p_util.h" + + +struct draw_context; +struct vertex_info; + + +/** + * Interface for hardware vertex buffer rendering. + */ +struct vbuf_render { + + /** + * Driver limits. May be tuned lower to improve cache hits on + * index list. + */ + unsigned max_indices; + unsigned max_vertex_buffer_bytes; + + /** + * Get the hardware vertex format. + * + * XXX: have this in draw_context instead? + */ + const struct vertex_info *(*get_vertex_info)( struct vbuf_render * ); + + /** + * Request a destination for vertices. + * Hardware renderers will use ttm memory, others will just malloc + * something. + */ + void *(*allocate_vertices)( struct vbuf_render *, + ushort vertex_size, + ushort nr_vertices ); + + /** + * Notify the renderer of the current primitive when it changes. + * Prim is restricted to TRIANGLES, LINES and POINTS. + */ + void (*set_primitive)( struct vbuf_render *, unsigned prim ); + + /** + * DrawElements, note indices are ushort: + */ + void (*draw)( struct vbuf_render *, + const ushort *indices, + unsigned nr_indices ); + + /** + * Called when vbuf is done with this set of vertices: + */ + void (*release_vertices)( struct vbuf_render *, + void *vertices, + unsigned vertex_size, + unsigned vertices_used ); + + void (*destroy)( struct vbuf_render * ); +}; + + + +struct draw_stage * +draw_vbuf_stage( struct draw_context *draw, + struct vbuf_render *render ); + + +#endif /*DRAW_VBUF_H_*/ diff --git a/src/mesa/sources b/src/mesa/sources index 0b9b5fca3aa..ea6840f3d95 100644 --- a/src/mesa/sources +++ b/src/mesa/sources @@ -169,6 +169,7 @@ DRAW_SOURCES = \ pipe/draw/draw_twoside.c \ pipe/draw/draw_unfilled.c \ pipe/draw/draw_validate.c \ + pipe/draw/draw_vbuf.c \ pipe/draw/draw_vertex.c \ pipe/draw/draw_vertex_cache.c \ pipe/draw/draw_vertex_fetch.c \ |