From 946f432a08112148d743eb9faf6b27bb8cc7fa76 Mon Sep 17 00:00:00 2001 From: José Fonseca Date: Sun, 26 Jul 2009 23:44:38 +0100 Subject: llvmpipe: Fork softpipe for experimentation with llvm. --- src/gallium/drivers/llvmpipe/lp_prim_vbuf.c | 585 ++++++++++++++++++++++++++++ 1 file changed, 585 insertions(+) create mode 100644 src/gallium/drivers/llvmpipe/lp_prim_vbuf.c (limited to 'src/gallium/drivers/llvmpipe/lp_prim_vbuf.c') diff --git a/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c b/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c new file mode 100644 index 0000000000..e6d9e375a3 --- /dev/null +++ b/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c @@ -0,0 +1,585 @@ +/************************************************************************** + * + * 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 llvmpipe 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 "lp_context.h" +#include "lp_state.h" +#include "lp_prim_vbuf.h" +#include "lp_prim_setup.h" +#include "lp_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 llvmpipe_vbuf_render +{ + struct vbuf_render base; + struct llvmpipe_context *llvmpipe; + uint prim; + uint vertex_size; + uint nr_vertices; + uint vertex_buffer_size; + void *vertex_buffer; +}; + + +/** cast wrapper */ +static struct llvmpipe_vbuf_render * +llvmpipe_vbuf_render(struct vbuf_render *vbr) +{ + return (struct llvmpipe_vbuf_render *) vbr; +} + + +static const struct vertex_info * +lp_vbuf_get_vertex_info(struct vbuf_render *vbr) +{ + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + return llvmpipe_get_vbuf_vertex_info(cvbr->llvmpipe); +} + + +static boolean +lp_vbuf_allocate_vertices(struct vbuf_render *vbr, + ushort vertex_size, ushort nr_vertices) +{ + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + unsigned size = vertex_size * nr_vertices; + + if (cvbr->vertex_buffer_size < size) { + align_free(cvbr->vertex_buffer); + cvbr->vertex_buffer = align_malloc(size, 16); + cvbr->vertex_buffer_size = size; + } + + cvbr->vertex_size = vertex_size; + cvbr->nr_vertices = nr_vertices; + + return cvbr->vertex_buffer != NULL; +} + +static void +lp_vbuf_release_vertices(struct vbuf_render *vbr) +{ +#if 0 + { + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + const struct vertex_info *info = + llvmpipe_get_vbuf_vertex_info(cvbr->llvmpipe); + const float *vtx = (const float *) cvbr->vertex_buffer; + uint i, j; + debug_printf("%s (vtx_size = %u, vtx_used = %u)\n", + __FUNCTION__, cvbr->vertex_size, cvbr->nr_vertices); + for (i = 0; i < cvbr->nr_vertices; i++) { + for (j = 0; j < info->num_attribs; j++) { + uint k; + switch (info->attrib[j].emit) { + case EMIT_4F: k = 4; break; + case EMIT_3F: k = 3; break; + case EMIT_2F: k = 2; break; + case EMIT_1F: k = 1; break; + default: assert(0); + } + debug_printf("Vert %u attr %u: ", i, j); + while (k-- > 0) { + debug_printf("%g ", vtx[0]); + vtx++; + } + debug_printf("\n"); + } + } + } +#endif + + /* keep the old allocation for next time */ +} + +static void * +lp_vbuf_map_vertices(struct vbuf_render *vbr) +{ + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + return cvbr->vertex_buffer; +} + +static void +lp_vbuf_unmap_vertices(struct vbuf_render *vbr, + ushort min_index, + ushort max_index ) +{ + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + assert( cvbr->vertex_buffer_size >= (max_index+1) * cvbr->vertex_size ); + /* do nothing */ +} + + +static boolean +lp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim) +{ + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + + /* XXX: break this dependency - make setup_context live under + * llvmpipe, rename the old "setup" draw stage to something else. + */ + struct setup_context *setup_ctx = lp_draw_setup_context(cvbr->llvmpipe->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 +lp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr) +{ + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + struct llvmpipe_context *llvmpipe = cvbr->llvmpipe; + const unsigned stride = llvmpipe->vertex_info_vbuf.size * sizeof(float); + const void *vertex_buffer = cvbr->vertex_buffer; + unsigned i; + + /* XXX: break this dependency - make setup_context live under + * llvmpipe, rename the old "setup" draw stage to something else. + */ + struct draw_stage *setup = llvmpipe->setup; + struct setup_context *setup_ctx = lp_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) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-0], stride), + get_vert(vertex_buffer, indices[i-2], stride) ); + } + else { + 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) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i+(i&1)-1], stride), + get_vert(vertex_buffer, indices[i-(i&1)], stride), + get_vert(vertex_buffer, indices[i-2], stride) ); + } + else { + 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: + for (i = 2; i < nr; i += 1) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-0], stride), + get_vert(vertex_buffer, indices[0], stride), + get_vert(vertex_buffer, indices[i-1], stride) ); + } + else { + 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) { + if (llvmpipe->rasterizer->flatshade_first) { + 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-3], stride) ); + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-0], stride), + get_vert(vertex_buffer, indices[i-3], stride) ); + } + else { + 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) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-0], stride), + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[i-3], stride)); + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-2], stride), + get_vert(vertex_buffer, indices[i-0], stride), + get_vert(vertex_buffer, indices[i-3], stride) ); + } + else { + 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; + + case PIPE_PRIM_POLYGON: + /* Almost same as tri fan but the _first_ vertex specifies the flat + * shading color. Note that the first polygon vertex is passed as + * the last triangle vertex here. + * flatshade_first state makes no difference. + */ + for (i = 2; i < nr; i += 1) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, indices[i-0], stride), + get_vert(vertex_buffer, indices[i-1], stride), + get_vert(vertex_buffer, indices[0], stride) ); + } + break; + + default: + assert(0); + } + + /* XXX: why are we calling this??? If we had to call something, it + * would be a function in lp_setup.c: + */ + lp_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 +lp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr) +{ + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + struct llvmpipe_context *llvmpipe = cvbr->llvmpipe; + const unsigned stride = llvmpipe->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 + * llvmpipe, rename the old "setup" draw stage to something else. + */ + struct draw_stage *setup = llvmpipe->setup; + struct setup_context *setup_ctx = lp_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) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride), + get_vert(vertex_buffer, i-2, stride) ); + } + else { + 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++) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i+(i&1)-1, stride), + get_vert(vertex_buffer, i-(i&1), stride), + get_vert(vertex_buffer, i-2, stride) ); + } + else { + 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: + for (i = 2; i < nr; i += 1) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-0, stride), + get_vert(vertex_buffer, 0, stride), + get_vert(vertex_buffer, i-1, stride) ); + } + else { + 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) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-2, stride), + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-3, stride) ); + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride), + get_vert(vertex_buffer, i-3, stride) ); + } + else { + 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) { + if (llvmpipe->rasterizer->flatshade_first) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-0, stride), + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-3, stride) ); + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-2, stride), + get_vert(vertex_buffer, i-0, stride), + get_vert(vertex_buffer, i-3, stride) ); + } + else { + 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; + + case PIPE_PRIM_POLYGON: + /* Almost same as tri fan but the _first_ vertex specifies the flat + * shading color. Note that the first polygon vertex is passed as + * the last triangle vertex here. + * flatshade_first state makes no difference. + */ + for (i = 2; i < nr; i += 1) { + setup_tri( setup_ctx, + get_vert(vertex_buffer, i-1, stride), + get_vert(vertex_buffer, i-0, stride), + get_vert(vertex_buffer, 0, stride) ); + } + break; + + default: + assert(0); + } +} + + + +static void +lp_vbuf_destroy(struct vbuf_render *vbr) +{ + struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr); + cvbr->llvmpipe->vbuf_render = NULL; + FREE(cvbr); +} + + +/** + * Initialize the post-transform vertex buffer information for the given + * context. + */ +void +lp_init_vbuf(struct llvmpipe_context *lp) +{ + assert(lp->draw); + + lp->vbuf_render = CALLOC_STRUCT(llvmpipe_vbuf_render); + + lp->vbuf_render->base.max_indices = SP_MAX_VBUF_INDEXES; + lp->vbuf_render->base.max_vertex_buffer_bytes = SP_MAX_VBUF_SIZE; + + lp->vbuf_render->base.get_vertex_info = lp_vbuf_get_vertex_info; + lp->vbuf_render->base.allocate_vertices = lp_vbuf_allocate_vertices; + lp->vbuf_render->base.map_vertices = lp_vbuf_map_vertices; + lp->vbuf_render->base.unmap_vertices = lp_vbuf_unmap_vertices; + lp->vbuf_render->base.set_primitive = lp_vbuf_set_primitive; + lp->vbuf_render->base.draw = lp_vbuf_draw; + lp->vbuf_render->base.draw_arrays = lp_vbuf_draw_arrays; + lp->vbuf_render->base.release_vertices = lp_vbuf_release_vertices; + lp->vbuf_render->base.destroy = lp_vbuf_destroy; + + lp->vbuf_render->llvmpipe = lp; + + lp->vbuf = draw_vbuf_stage(lp->draw, &lp->vbuf_render->base); + + draw_set_rasterize_stage(lp->draw, lp->vbuf); + + draw_set_render(lp->draw, &lp->vbuf_render->base); +} -- cgit v1.2.3