diff options
author | Brian Paul <[email protected]> | 2009-02-10 16:44:02 -0700 |
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committer | Brian Paul <[email protected]> | 2009-02-10 16:44:02 -0700 |
commit | 5340b6dff73a0a23531ce2a5f28fba8303adab6e (patch) | |
tree | b141fc3648568dd8b941c966059e6ed32a8bd0ad /src/gallium/drivers/softpipe/sp_prim_vbuf.c | |
parent | 9fd26daec24f21dbe17afcb2e2ab272667ee9a69 (diff) | |
parent | ee4c921b65fb76998711f3c40330505cbc49a0e0 (diff) |
Merge commit 'origin/gallium-master-merge'
This is the big merge of the gallium-0.2 branch into master.
gallium-master-merge was just the staging area for it.
Both gallium-0.2 and gallium-master-merge are considered closed now.
Conflicts:
progs/demos/Makefile
src/mesa/main/state.c
src/mesa/main/texenvprogram.c
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_prim_vbuf.c')
-rw-r--r-- | src/gallium/drivers/softpipe/sp_prim_vbuf.c | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_prim_vbuf.c b/src/gallium/drivers/softpipe/sp_prim_vbuf.c new file mode 100644 index 00000000000..9cd5784e5bc --- /dev/null +++ b/src/gallium/drivers/softpipe/sp_prim_vbuf.c @@ -0,0 +1,410 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +/** + * Interface between 'draw' module's output and the softpipe rasterizer/setup + * code. When the 'draw' module has finished filling a vertex buffer, the + * draw_arrays() functions below will be called. Loop over the vertices and + * call the point/line/tri setup functions. + * + * Authors + * Brian Paul + */ + + +#include "sp_context.h" +#include "sp_state.h" +#include "sp_prim_vbuf.h" +#include "sp_prim_setup.h" +#include "sp_setup.h" +#include "draw/draw_context.h" +#include "draw/draw_vbuf.h" +#include "util/u_memory.h" + + +#define SP_MAX_VBUF_INDEXES 1024 +#define SP_MAX_VBUF_SIZE 4096 + +typedef const float (*cptrf4)[4]; + +/** + * Subclass of vbuf_render. + */ +struct softpipe_vbuf_render +{ + struct vbuf_render base; + struct softpipe_context *softpipe; + uint prim; + uint vertex_size; + void *vertex_buffer; +}; + + +/** cast wrapper */ +static struct softpipe_vbuf_render * +softpipe_vbuf_render(struct vbuf_render *vbr) +{ + return (struct softpipe_vbuf_render *) vbr; +} + + +static const struct vertex_info * +sp_vbuf_get_vertex_info(struct vbuf_render *vbr) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + return softpipe_get_vbuf_vertex_info(cvbr->softpipe); +} + + +static void * +sp_vbuf_allocate_vertices(struct vbuf_render *vbr, + ushort vertex_size, ushort nr_vertices) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + assert(!cvbr->vertex_buffer); + cvbr->vertex_buffer = align_malloc(vertex_size * nr_vertices, 16); + cvbr->vertex_size = vertex_size; + return cvbr->vertex_buffer; +} + + +static void +sp_vbuf_release_vertices(struct vbuf_render *vbr, void *vertices, + unsigned vertex_size, unsigned vertices_used) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + align_free(vertices); + assert(vertices == cvbr->vertex_buffer); + cvbr->vertex_buffer = NULL; +} + + +static boolean +sp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + + /* XXX: break this dependency - make setup_context live under + * softpipe, rename the old "setup" draw stage to something else. + */ + struct setup_context *setup_ctx = sp_draw_setup_context(cvbr->softpipe->setup); + + setup_prepare( setup_ctx ); + + + + cvbr->prim = prim; + return TRUE; + +} + + +static INLINE cptrf4 get_vert( const void *vertex_buffer, + int index, + int stride ) +{ + return (cptrf4)((char *)vertex_buffer + index * stride); +} + + +/** + * draw elements / indexed primitives + */ +static void +sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + struct softpipe_context *softpipe = cvbr->softpipe; + const unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float); + const void *vertex_buffer = cvbr->vertex_buffer; + unsigned i; + + /* XXX: break this dependency - make setup_context live under + * softpipe, rename the old "setup" draw stage to something else. + */ + struct draw_stage *setup = softpipe->setup; + struct setup_context *setup_ctx = sp_draw_setup_context(setup); + + switch (cvbr->prim) { + case PIPE_PRIM_POINTS: + for (i = 0; i < nr; i++) { + setup_point( setup_ctx, + get_vert(vertex_buffer, indices[i-0], stride) ); + } + break; + + case PIPE_PRIM_LINES: + for (i = 1; i < nr; i += 2) { + setup_line( setup_ctx, + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-0], stride) ); + } + break; + + case PIPE_PRIM_LINE_STRIP: + for (i = 1; i < nr; i ++) { + setup_line( setup_ctx, + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-0], stride) ); + } + break; + + case PIPE_PRIM_LINE_LOOP: + for (i = 1; i < nr; i ++) { + setup_line( setup_ctx, + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-0], stride) ); + } + if (nr) { + setup_line( setup_ctx, + get_vert(vertex_buffer, indices[nr-1], stride), + get_vert(vertex_buffer, indices[0], stride) ); + } + break; + + + case PIPE_PRIM_TRIANGLES: + for (i = 2; i < nr; i += 3) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-2], stride), + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-0], stride)); + } + break; + + case PIPE_PRIM_TRIANGLE_STRIP: + for (i = 2; i < nr; i += 1) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i+(i&1)-2], stride), + get_vert(vertex_buffer, indices[i-(i&1)-1], stride), + get_vert(vertex_buffer, indices[i-0], stride)); + } + break; + + case PIPE_PRIM_TRIANGLE_FAN: + case PIPE_PRIM_POLYGON: + for (i = 2; i < nr; i += 1) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[0], stride), + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-0], stride)); + } + break; + case PIPE_PRIM_QUADS: + for (i = 3; i < nr; i += 4) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-3], stride), + get_vert(vertex_buffer, indices[i-2], stride), + get_vert(vertex_buffer, indices[i-0], stride)); + + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-2], stride), + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-0], stride)); + } + break; + case PIPE_PRIM_QUAD_STRIP: + for (i = 3; i < nr; i += 2) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-3], stride), + get_vert(vertex_buffer, indices[i-2], stride), + get_vert(vertex_buffer, indices[i-0], stride)); + + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-3], stride), + get_vert(vertex_buffer, indices[i-0], stride)); + } + break; + default: + assert(0); + } + + /* XXX: why are we calling this??? If we had to call something, it + * would be a function in sp_setup.c: + */ + sp_draw_flush( setup ); +} + + +/** + * This function is hit when the draw module is working in pass-through mode. + * It's up to us to convert the vertex array into point/line/tri prims. + */ +static void +sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + struct softpipe_context *softpipe = cvbr->softpipe; + const unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float); + const void *vertex_buffer = + (void *) get_vert(cvbr->vertex_buffer, start, stride); + unsigned i; + + /* XXX: break this dependency - make setup_context live under + * softpipe, rename the old "setup" draw stage to something else. + */ + struct draw_stage *setup = softpipe->setup; + struct setup_context *setup_ctx = sp_draw_setup_context(setup); + + switch (cvbr->prim) { + case PIPE_PRIM_POINTS: + for (i = 0; i < nr; i++) { + setup_point( setup_ctx, + get_vert(vertex_buffer, i-0, stride) ); + } + break; + + case PIPE_PRIM_LINES: + for (i = 1; i < nr; i += 2) { + setup_line( setup_ctx, + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride) ); + } + break; + + case PIPE_PRIM_LINE_STRIP: + for (i = 1; i < nr; i ++) { + setup_line( setup_ctx, + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride) ); + } + break; + + case PIPE_PRIM_LINE_LOOP: + for (i = 1; i < nr; i ++) { + setup_line( setup_ctx, + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride) ); + } + if (nr) { + setup_line( setup_ctx, + get_vert(vertex_buffer, nr-1, stride), + get_vert(vertex_buffer, 0, stride) ); + } + break; + + + case PIPE_PRIM_TRIANGLES: + for (i = 2; i < nr; i += 3) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-2, stride), + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride)); + } + break; + + case PIPE_PRIM_TRIANGLE_STRIP: + for (i = 2; i < nr; i += 1) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i+(i&1)-2, stride), + get_vert(vertex_buffer, i-(i&1)-1, stride), + get_vert(vertex_buffer, i-0, stride)); + } + break; + + case PIPE_PRIM_TRIANGLE_FAN: + case PIPE_PRIM_POLYGON: + for (i = 2; i < nr; i += 1) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, 0, stride), + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride)); + } + break; + case PIPE_PRIM_QUADS: + for (i = 3; i < nr; i += 4) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-3, stride), + get_vert(vertex_buffer, i-2, stride), + get_vert(vertex_buffer, i-0, stride)); + + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-2, stride), + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride)); + } + break; + case PIPE_PRIM_QUAD_STRIP: + for (i = 3; i < nr; i += 2) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-3, stride), + get_vert(vertex_buffer, i-2, stride), + get_vert(vertex_buffer, i-0, stride)); + + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-3, stride), + get_vert(vertex_buffer, i-0, stride)); + } + break; + default: + assert(0); + } +} + + + +static void +sp_vbuf_destroy(struct vbuf_render *vbr) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + cvbr->softpipe->vbuf_render = NULL; + FREE(cvbr); +} + + +/** + * Initialize the post-transform vertex buffer information for the given + * context. + */ +void +sp_init_vbuf(struct softpipe_context *sp) +{ + assert(sp->draw); + + sp->vbuf_render = CALLOC_STRUCT(softpipe_vbuf_render); + + sp->vbuf_render->base.max_indices = SP_MAX_VBUF_INDEXES; + sp->vbuf_render->base.max_vertex_buffer_bytes = SP_MAX_VBUF_SIZE; + + sp->vbuf_render->base.get_vertex_info = sp_vbuf_get_vertex_info; + sp->vbuf_render->base.allocate_vertices = sp_vbuf_allocate_vertices; + sp->vbuf_render->base.set_primitive = sp_vbuf_set_primitive; + sp->vbuf_render->base.draw = sp_vbuf_draw; + sp->vbuf_render->base.draw_arrays = sp_vbuf_draw_arrays; + sp->vbuf_render->base.release_vertices = sp_vbuf_release_vertices; + sp->vbuf_render->base.destroy = sp_vbuf_destroy; + + sp->vbuf_render->softpipe = sp; + + sp->vbuf = draw_vbuf_stage(sp->draw, &sp->vbuf_render->base); + + draw_set_rasterize_stage(sp->draw, sp->vbuf); + + draw_set_render(sp->draw, &sp->vbuf_render->base); +} |