diff options
Diffstat (limited to 'src/gallium/drivers/cell/ppu/cell_state_derived.c')
| -rw-r--r-- | src/gallium/drivers/cell/ppu/cell_state_derived.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_state_derived.c b/src/gallium/drivers/cell/ppu/cell_state_derived.c new file mode 100644 index 0000000000..56daf5dfde --- /dev/null +++ b/src/gallium/drivers/cell/ppu/cell_state_derived.c @@ -0,0 +1,192 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +#include "pipe/p_util.h" +#include "pipe/p_shader_tokens.h" +#include "pipe/draw/draw_context.h" +#include "pipe/draw/draw_vertex.h" +#include "cell_context.h" +#include "cell_batch.h" +#include "cell_state.h" +#include "cell_state_emit.h" + + +static int +find_vs_output(const struct pipe_shader_state *vs, + uint semantic_name, + uint semantic_index) +{ + uint i; + for (i = 0; i < vs->num_outputs; i++) { + if (vs->output_semantic_name[i] == semantic_name && + vs->output_semantic_index[i] == semantic_index) + return i; + } + return -1; +} + + +/** + * Determine how to map vertex program outputs to fragment program inputs. + * Basically, this will be used when computing the triangle interpolation + * coefficients from the post-transform vertex attributes. + */ +static void +calculate_vertex_layout( struct cell_context *cell ) +{ + const struct pipe_shader_state *vs = &cell->vs->shader; + const struct pipe_shader_state *fs = &cell->fs->shader; + const enum interp_mode colorInterp + = cell->rasterizer->flatshade ? INTERP_CONSTANT : INTERP_LINEAR; + struct vertex_info *vinfo = &cell->vertex_info; + uint i; + int src; + +#if 0 + if (cell->vbuf) { + /* if using the post-transform vertex buffer, tell draw_vbuf to + * simply emit the whole post-xform vertex as-is: + */ + struct vertex_info *vinfo_vbuf = &cell->vertex_info_vbuf; + vinfo_vbuf->num_attribs = 0; + draw_emit_vertex_attr(vinfo_vbuf, EMIT_ALL, INTERP_NONE, 0); + vinfo_vbuf->size = 4 * vs->num_outputs + sizeof(struct vertex_header)/4; + } +#endif + + /* reset vinfo */ + vinfo->num_attribs = 0; + + /* we always want to emit vertex pos */ + src = find_vs_output(vs, TGSI_SEMANTIC_POSITION, 0); + assert(src >= 0); + draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_POS, src); + + + /* + * Loop over fragment shader inputs, searching for the matching output + * from the vertex shader. + */ + for (i = 0; i < fs->num_inputs; i++) { + switch (fs->input_semantic_name[i]) { + case TGSI_SEMANTIC_POSITION: + /* already done above */ + break; + + case TGSI_SEMANTIC_COLOR: + src = find_vs_output(vs, TGSI_SEMANTIC_COLOR, + fs->input_semantic_index[i]); + assert(src >= 0); + draw_emit_vertex_attr(vinfo, EMIT_4F, colorInterp, src); + break; + + case TGSI_SEMANTIC_FOG: + src = find_vs_output(vs, TGSI_SEMANTIC_FOG, 0); +#if 1 + if (src < 0) /* XXX temp hack, try demos/fogcoord.c with this */ + src = 0; +#endif + assert(src >= 0); + draw_emit_vertex_attr(vinfo, EMIT_1F, INTERP_PERSPECTIVE, src); + break; + + case TGSI_SEMANTIC_GENERIC: + /* this includes texcoords and varying vars */ + src = find_vs_output(vs, TGSI_SEMANTIC_GENERIC, + fs->input_semantic_index[i]); + assert(src >= 0); + draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, src); + break; + + default: + assert(0); + } + } + + draw_compute_vertex_size(vinfo); + + /* XXX only signal this if format really changes */ + cell->dirty |= CELL_NEW_VERTEX_INFO; +} + + +#if 0 +/** + * Recompute cliprect from scissor bounds, scissor enable and surface size. + */ +static void +compute_cliprect(struct cell_context *sp) +{ + unsigned surfWidth, surfHeight; + + if (sp->framebuffer.num_cbufs > 0) { + surfWidth = sp->framebuffer.cbufs[0]->width; + surfHeight = sp->framebuffer.cbufs[0]->height; + } + else { + /* no surface? */ + surfWidth = sp->scissor.maxx; + surfHeight = sp->scissor.maxy; + } + + if (sp->rasterizer->scissor) { + /* clip to scissor rect */ + sp->cliprect.minx = MAX2(sp->scissor.minx, 0); + sp->cliprect.miny = MAX2(sp->scissor.miny, 0); + sp->cliprect.maxx = MIN2(sp->scissor.maxx, surfWidth); + sp->cliprect.maxy = MIN2(sp->scissor.maxy, surfHeight); + } + else { + /* clip to surface bounds */ + sp->cliprect.minx = 0; + sp->cliprect.miny = 0; + sp->cliprect.maxx = surfWidth; + sp->cliprect.maxy = surfHeight; + } +} +#endif + + + +void cell_update_derived( struct cell_context *cell ) +{ + if (cell->dirty & (CELL_NEW_RASTERIZER | + CELL_NEW_FS | + CELL_NEW_VS)) + calculate_vertex_layout( cell ); + +#if 0 + if (cell->dirty & (CELL_NEW_SCISSOR | + CELL_NEW_DEPTH_STENCIL_ALPHA | + CELL_NEW_FRAMEBUFFER)) + compute_cliprect(cell); +#endif + + cell_emit_state(cell); + + cell->dirty = 0; +} |