diff options
Diffstat (limited to 'src/gallium/drivers/i915simple/i915_state_derived.c')
| -rw-r--r-- | src/gallium/drivers/i915simple/i915_state_derived.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915simple/i915_state_derived.c b/src/gallium/drivers/i915simple/i915_state_derived.c new file mode 100644 index 0000000000..488615067c --- /dev/null +++ b/src/gallium/drivers/i915simple/i915_state_derived.c @@ -0,0 +1,183 @@ +/************************************************************************** + * + * Copyright 2003 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 "util/u_memory.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" + + + +/** + * Determine the hardware vertex layout. + * Depends on vertex/fragment shader state. + */ +static void calculate_vertex_layout( struct i915_context *i915 ) +{ + const struct i915_fragment_shader *fs = i915->fs; + const enum interp_mode colorInterp = i915->rasterizer->color_interp; + struct vertex_info vinfo; + boolean texCoords[8], colors[2], fog, needW; + uint i; + int src; + + memset(texCoords, 0, sizeof(texCoords)); + colors[0] = colors[1] = fog = needW = FALSE; + memset(&vinfo, 0, sizeof(vinfo)); + + /* Determine which fragment program inputs are needed. Setup HW vertex + * layout below, in the HW-specific attribute order. + */ + for (i = 0; i < fs->info.num_inputs; i++) { + switch (fs->info.input_semantic_name[i]) { + case TGSI_SEMANTIC_POSITION: + break; + case TGSI_SEMANTIC_COLOR: + assert(fs->info.input_semantic_index[i] < 2); + colors[fs->info.input_semantic_index[i]] = TRUE; + break; + case TGSI_SEMANTIC_GENERIC: + /* usually a texcoord */ + { + const uint unit = fs->info.input_semantic_index[i]; + assert(unit < 8); + texCoords[unit] = TRUE; + needW = TRUE; + } + break; + case TGSI_SEMANTIC_FOG: + fog = TRUE; + break; + default: + assert(0); + } + } + + + /* 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; + } + + /* 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); + } + else { + hwtc = TEXCOORDFMT_NOT_PRESENT; + } + vinfo.hwfmt[1] |= hwtc << (i * 4); + } + + draw_compute_vertex_size(&vinfo); + + if (memcmp(&i915->current.vertex_info, &vinfo, sizeof(vinfo))) { + /* Need to set this flag so that the LIS2/4 registers get set. + * It also means the i915_update_immediate() function must be called + * after this one, in i915_update_derived(). + */ + i915->dirty |= I915_NEW_VERTEX_FORMAT; + + memcpy(&i915->current.vertex_info, &vinfo, sizeof(vinfo)); + } +} + + + + +/* Hopefully this will remain quite simple, otherwise need to pull in + * something like the state tracker mechanism. + */ +void i915_update_derived( struct i915_context *i915 ) +{ + if (i915->dirty & (I915_NEW_RASTERIZER | I915_NEW_FS | I915_NEW_VS)) + calculate_vertex_layout( i915 ); + + if (i915->dirty & (I915_NEW_SAMPLER | I915_NEW_TEXTURE)) + i915_update_samplers(i915); + + if (i915->dirty & I915_NEW_TEXTURE) + i915_update_textures(i915); + + if (i915->dirty) + i915_update_immediate( i915 ); + + if (i915->dirty) + i915_update_dynamic( i915 ); + + if (i915->dirty & I915_NEW_FS) { + i915->hardware_dirty |= I915_HW_PROGRAM; /* XXX right? */ + } + + /* HW emit currently references framebuffer state directly: + */ + if (i915->dirty & I915_NEW_FRAMEBUFFER) + i915->hardware_dirty |= I915_HW_STATIC; + + i915->dirty = 0; +} |