diff options
Diffstat (limited to 'src/gallium/drivers')
-rw-r--r-- | src/gallium/drivers/i915simple/i915_state_derived.c | 99 |
1 files changed, 53 insertions, 46 deletions
diff --git a/src/gallium/drivers/i915simple/i915_state_derived.c b/src/gallium/drivers/i915simple/i915_state_derived.c index f654f543cc..fe52fe6e6b 100644 --- a/src/gallium/drivers/i915simple/i915_state_derived.c +++ b/src/gallium/drivers/i915simple/i915_state_derived.c @@ -27,104 +27,111 @@ #include "pipe/p_util.h" +#include "pipe/p_shader_tokens.h" #include "draw/draw_context.h" #include "draw/draw_vertex.h" #include "i915_context.h" #include "i915_state.h" #include "i915_reg.h" #include "i915_fpc.h" -#include "pipe/p_shader_tokens.h" + /** - * Determine which post-transform / pre-rasterization vertex attributes - * we need. - * Derived from: fs, setup states. + * Determine the hardware vertex layout. + * Depends on vertex/fragment shader state. */ static void calculate_vertex_layout( struct i915_context *i915 ) { const struct pipe_shader_state *fs = &i915->fs->state; const enum interp_mode colorInterp = i915->rasterizer->color_interp; struct vertex_info vinfo; - uint front0 = 0, back0 = 0, front1 = 0, back1 = 0; - boolean needW = 0; + boolean texCoords[8], colors[2], fog, needW; uint i; - boolean texCoords[8]; - uint src = 0; + int src; memset(texCoords, 0, sizeof(texCoords)); + colors[0] = colors[1] = fog = needW = FALSE; memset(&vinfo, 0, sizeof(vinfo)); - /* pos */ - draw_emit_vertex_attr(&vinfo, EMIT_3F, INTERP_LINEAR, src++); - /* Note: we'll set the S4_VFMT_XYZ[W] bits below */ - + /* Determine which fragment program inputs are needed. Setup HW vertex + * layout below, in the HW-specific attribute order. + */ for (i = 0; i < fs->num_inputs; i++) { switch (fs->input_semantic_name[i]) { case TGSI_SEMANTIC_POSITION: break; case TGSI_SEMANTIC_COLOR: - if (fs->input_semantic_index[i] == 0) { - front0 = draw_emit_vertex_attr(&vinfo, EMIT_4UB, colorInterp, src++); - vinfo.hwfmt[0] |= S4_VFMT_COLOR; - } - else { - assert(fs->input_semantic_index[i] == 1); - front1 = draw_emit_vertex_attr(&vinfo, EMIT_4UB, colorInterp, src++); - vinfo.hwfmt[0] |= S4_VFMT_SPEC_FOG; - } + assert(fs->input_semantic_index[i] < 2); + colors[fs->input_semantic_index[i]] = TRUE; break; case TGSI_SEMANTIC_GENERIC: /* usually a texcoord */ { const uint unit = fs->input_semantic_index[i]; - uint hwtc; + assert(unit < 8); texCoords[unit] = TRUE; - draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_PERSPECTIVE, src++); - hwtc = TEXCOORDFMT_4D; needW = TRUE; - vinfo.hwfmt[1] |= hwtc << (unit * 4); } break; case TGSI_SEMANTIC_FOG: - debug_printf("i915 fogcoord not implemented yet\n"); - draw_emit_vertex_attr(&vinfo, EMIT_1F, INTERP_PERSPECTIVE, src++); + fog = TRUE; break; default: assert(0); } - } - /* finish up texcoord fields */ - for (i = 0; i < 8; i++) { - if (!texCoords[i]) { - const uint hwtc = TEXCOORDFMT_NOT_PRESENT; - vinfo.hwfmt[1] |= hwtc << (i* 4); - } - } - - /* go back and fill in the vertex position info now that we have needW */ + + /* pos */ + src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_POSITION, 0); if (needW) { + draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_LINEAR, src); vinfo.hwfmt[0] |= S4_VFMT_XYZW; vinfo.emit[0] = EMIT_4F; } else { + draw_emit_vertex_attr(&vinfo, EMIT_3F, INTERP_LINEAR, src); vinfo.hwfmt[0] |= S4_VFMT_XYZ; vinfo.emit[0] = EMIT_3F; } - /* Additional attributes required for setup: Just twosided - * lighting. Edgeflag is dealt with specially by setting bits in - * the vertex header. - */ - if (i915->rasterizer->light_twoside) { - if (front0) { - back0 = draw_emit_vertex_attr(&vinfo, EMIT_OMIT, colorInterp, src++); + /* hardware point size */ + /* XXX todo */ + + /* primary color */ + if (colors[0]) { + src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_COLOR, 0); + draw_emit_vertex_attr(&vinfo, EMIT_4UB, colorInterp, src); + vinfo.hwfmt[0] |= S4_VFMT_COLOR; + } + + /* secondary color */ + if (colors[1]) { + src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_COLOR, 1); + draw_emit_vertex_attr(&vinfo, EMIT_4UB, colorInterp, src); + vinfo.hwfmt[0] |= S4_VFMT_SPEC_FOG; + } + + /* fog coord, not fog blend factor */ + if (fog) { + src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_FOG, 0); + draw_emit_vertex_attr(&vinfo, EMIT_1F, INTERP_PERSPECTIVE, src); + vinfo.hwfmt[0] |= S4_VFMT_FOG_PARAM; + } + + /* texcoords */ + for (i = 0; i < 8; i++) { + uint hwtc; + if (texCoords[i]) { + hwtc = TEXCOORDFMT_4D; + src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_GENERIC, i); + draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_PERSPECTIVE, src); } - if (back0) { - back1 = draw_emit_vertex_attr(&vinfo, EMIT_OMIT, colorInterp, src++); + else { + hwtc = TEXCOORDFMT_NOT_PRESENT; } + vinfo.hwfmt[1] |= hwtc << (i * 4); } draw_compute_vertex_size(&vinfo); |