From: Hui Qi Tay Date: Thu, 28 Oct 2010 23:47:13 +0000 (+0100) Subject: llvmpipe: Moved draw pipeline twoside function to llvm setup code X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7f0dc5ea1bb330c6589125baf4017c51a14dce8e;p=mesa.git llvmpipe: Moved draw pipeline twoside function to llvm setup code --- diff --git a/src/gallium/drivers/llvmpipe/lp_context.h b/src/gallium/drivers/llvmpipe/lp_context.h index db09c95b272..2230d500d2f 100644 --- a/src/gallium/drivers/llvmpipe/lp_context.h +++ b/src/gallium/drivers/llvmpipe/lp_context.h @@ -104,6 +104,12 @@ struct llvmpipe_context { /** Vertex format */ struct vertex_info vertex_info; + /** Which vertex shader output slot contains color */ + int color_slot; + + /** Which vertex shader output slot contains bcolor */ + int bcolor_slot; + /** Which vertex shader output slot contains point size */ int psize_slot; diff --git a/src/gallium/drivers/llvmpipe/lp_state_derived.c b/src/gallium/drivers/llvmpipe/lp_state_derived.c index 0f5f7369e04..1c9f03a381c 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_derived.c +++ b/src/gallium/drivers/llvmpipe/lp_state_derived.c @@ -75,13 +75,25 @@ compute_vertex_info(struct llvmpipe_context *llvmpipe) vs_index = draw_find_shader_output(llvmpipe->draw, lpfs->info.base.input_semantic_name[i], lpfs->info.base.input_semantic_index[i]); - + if (lpfs->info.base.input_semantic_name[i]==TGSI_SEMANTIC_COLOR){ + llvmpipe->color_slot = vinfo->num_attribs; + } /* * Emit the requested fs attribute for all but position. */ draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, vs_index); } + /* Figure out if we need bcolor as well. + */ + vs_index = draw_find_shader_output(llvmpipe->draw, + TGSI_SEMANTIC_BCOLOR, 0); + + if (vs_index > 0) { + llvmpipe->bcolor_slot = vinfo->num_attribs; + draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, vs_index); + } + /* Figure out if we need pointsize as well. */ vs_index = draw_find_shader_output(llvmpipe->draw, diff --git a/src/gallium/drivers/llvmpipe/lp_state_setup.c b/src/gallium/drivers/llvmpipe/lp_state_setup.c index 2c8b8b9a928..83834946517 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_setup.c +++ b/src/gallium/drivers/llvmpipe/lp_state_setup.c @@ -33,6 +33,7 @@ #include "gallivm/lp_bld_debug.h" #include "gallivm/lp_bld_init.h" #include "gallivm/lp_bld_intr.h" +#include "gallivm/lp_bld_flow.h" #include /* for LLVMVerifyFunction */ #include "lp_perf.h" @@ -74,6 +75,14 @@ struct lp_setup_args LLVMValueRef dy01_ooa; LLVMValueRef dx20_ooa; LLVMValueRef dx01_ooa; + + /* For twoside calcs + */ + LLVMValueRef det; + LLVMValueRef sign; + LLVMValueRef bcolor_slot; + LLVMValueRef color_slot; + }; static LLVMTypeRef type4f(void) @@ -472,13 +481,78 @@ init_args(LLVMBuilderRef b, args->y0_center = vec4f_from_scalar(b, y0_center, "y0_center_4f"); } +static void +set_args_attr(struct llvmpipe_context *lp, + struct lp_setup_args *args) +{ + args->color_slot = LLVMConstInt(LLVMInt32Type(), lp->color_slot, 0); + args->bcolor_slot = LLVMConstInt(LLVMInt32Type(), lp->bcolor_slot, 0); + args->sign = LLVMConstReal(LLVMFloatType(), (lp->rasterizer->front_ccw ? -1.0f : 1.0f)); +} + +static void +lp_twoside(LLVMBuilderRef b, + struct lp_setup_args *args, + const struct lp_setup_variant_key *key) +{ + struct lp_build_if_state if_state; + + LLVMValueRef a0_old, a1_old, a2_old; + LLVMValueRef a0_new, a1_new, a2_new; + + LLVMValueRef idx1 = args->color_slot; + LLVMValueRef idx2 = args->bcolor_slot; + + LLVMValueRef facing = args->facing; + LLVMValueRef front_facing = LLVMBuildICmp(b, LLVMIntEQ, facing, LLVMConstInt(LLVMInt32Type(), 0, 0), ""); /** need i1 for loop condition */ + +#if 0 +/*Probably can delete this, just tried to follow draw_pipe_twoside way of + calculating det*/ + /* edge vectors: e = v0 - v2, f = v1 - v2 */ + LLVMValueRef e = LLVMBuildFSub(b, args->v0, args->v2, "e"); + LLVMValueRef f = LLVMBuildFSub(b, args->v1, args->v2, "f"); + LLVMValueRef dx02 = vert_attrib(b, e, 0, 0, "dx02"); + LLVMValueRef dy02 = vert_attrib(b, e, 0, 1, "dy02"); + LLVMValueRef dx12 = vert_attrib(b, f, 0, 0, "dx12"); + LLVMValueRef dy12 = vert_attrib(b, f, 0, 1, "dy12"); + + /* det = cross(e,f).z */ + LLVMValueRef dx02_dy12 = LLVMBuildFMul(b, dx02, dy12, "dx02_dy12"); + LLVMValueRef dy02_dx12 = LLVMBuildFMul(b, dy02, dx12, "dy02_dx12"); + LLVMValueRef det = LLVMBuildFSub(b, dx02_dy12, dy02_dx12, "det"); + args->det = det; + LLVMValueRef result = LLVMBuildFMul(b, det, args->sign, "dy02_dx12"); +#endif + + lp_build_if(&if_state, b, front_facing); + { + /* swap the front and back attrib values */ + a0_old = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx1, 1, ""), "v0a"); + a1_old = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx1, 1, ""), "v1a"); + a2_old = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx1, 1, ""), "v2a"); + + a0_new = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx2, 1, ""), "v0a"); + a1_new = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx2, 1, ""), "v1a"); + a2_new = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx2, 1, ""), "v2a"); + + LLVMBuildStore(b, a0_new, LLVMBuildGEP(b, args->v0, &idx1, 1, "")); + LLVMBuildStore(b, a1_new, LLVMBuildGEP(b, args->v1, &idx1, 1, "")); + LLVMBuildStore(b, a2_new, LLVMBuildGEP(b, args->v2, &idx1, 1, "")); + } + lp_build_endif(&if_state); + +} + + /** * Generate the runtime callable function for the coefficient calculation. * */ static struct lp_setup_variant * generate_setup_variant(struct llvmpipe_screen *screen, - struct lp_setup_variant_key *key) + struct lp_setup_variant_key *key, + struct llvmpipe_context *lp) { struct lp_setup_variant *variant = NULL; struct lp_setup_args args; @@ -555,6 +629,10 @@ generate_setup_variant(struct llvmpipe_screen *screen, set_noalias(builder, variant->function, arg_types, Elements(arg_types)); init_args(builder, &args, variant); + if (variant->key.twoside){ + set_args_attr(lp, &args); + lp_twoside(builder, &args, &variant->key); + } emit_tri_coef(builder, &variant->key, &args); lp_emit_emms(builder); @@ -605,6 +683,7 @@ lp_make_setup_variant_key(struct llvmpipe_context *lp, key->num_inputs = fs->info.base.num_inputs; key->flatshade_first = lp->rasterizer->flatshade_first; key->pixel_center_half = lp->rasterizer->gl_rasterization_rules; + key->twoside = lp->rasterizer->light_twoside; key->size = Offset(struct lp_setup_variant_key, inputs[key->num_inputs]); key->pad = 0; @@ -612,7 +691,7 @@ lp_make_setup_variant_key(struct llvmpipe_context *lp, memcpy(key->inputs, fs->inputs, key->num_inputs * sizeof key->inputs[0]); for (i = 0; i < key->num_inputs; i++) { if (key->inputs[i].interp == LP_INTERP_COLOR) { - if (lp->rasterizer->flatshade) + if (lp->rasterizer->flatshade) key->inputs[i].interp = LP_INTERP_CONSTANT; else key->inputs[i].interp = LP_INTERP_LINEAR; @@ -702,7 +781,7 @@ llvmpipe_update_setup(struct llvmpipe_context *lp) cull_setup_variants(lp); } - variant = generate_setup_variant(screen, key); + variant = generate_setup_variant(screen, key, lp); insert_at_head(&lp->setup_variants_list, &variant->list_item_global); lp->nr_setup_variants++; } diff --git a/src/gallium/drivers/llvmpipe/lp_state_setup.h b/src/gallium/drivers/llvmpipe/lp_state_setup.h index b0c81baa75f..4079fb71f66 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_setup.h +++ b/src/gallium/drivers/llvmpipe/lp_state_setup.h @@ -18,7 +18,8 @@ struct lp_setup_variant_key { unsigned num_inputs:8; unsigned flatshade_first:1; unsigned pixel_center_half:1; - unsigned pad:7; + unsigned twoside:1; + unsigned pad:6; unsigned size:16; struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS]; };