diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c index f86d0553c7..91fab18e4e 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -47,6 +47,7 @@ #include "lp_bld_arit.h" #include "lp_bld_bitarit.h" #include "lp_bld_logic.h" +#include "lp_bld_printf.h" #include "lp_bld_swizzle.h" #include "lp_bld_flow.h" #include "lp_bld_gather.h" @@ -1057,6 +1058,11 @@ lp_build_sample_general(struct lp_build_sample_context *bld, } +/** + * Do shadow test/comparison. + * \param p the texcoord Z (aka R, aka P) component + * \param texel the texel to compare against (use the X channel) + */ static void lp_build_sample_compare(struct lp_build_sample_context *bld, LLVMValueRef p, @@ -1064,30 +1070,30 @@ lp_build_sample_compare(struct lp_build_sample_context *bld, { struct lp_build_context *texel_bld = &bld->texel_bld; LLVMValueRef res; - unsigned chan; + const unsigned chan = 0; - if(bld->static_state->compare_mode == PIPE_TEX_COMPARE_NONE) + if (bld->static_state->compare_mode == PIPE_TEX_COMPARE_NONE) return; - /* TODO: Compare before swizzling, to avoid redundant computations */ - res = NULL; - for(chan = 0; chan < 4; ++chan) { - LLVMValueRef cmp; - cmp = lp_build_cmp(texel_bld, bld->static_state->compare_func, p, texel[chan]); - cmp = lp_build_select(texel_bld, cmp, texel_bld->one, texel_bld->zero); - - if(res) - res = lp_build_add(texel_bld, res, cmp); - else - res = cmp; + /* debug code */ + if (0) { + LLVMValueRef indx = lp_build_const_int32(0); + LLVMValueRef coord = LLVMBuildExtractElement(bld->builder, p, indx, ""); + LLVMValueRef tex = LLVMBuildExtractElement(bld->builder, + texel[chan], indx, ""); + lp_build_printf(bld->builder, "shadow compare coord %f to texture %f\n", + coord, tex); } - assert(res); - res = lp_build_mul(texel_bld, res, lp_build_const_vec(texel_bld->type, 0.25)); + /* result = (p FUNC texel) ? 1 : 0 */ + res = lp_build_cmp(texel_bld, bld->static_state->compare_func, + p, texel[chan]); + res = lp_build_select(texel_bld, res, texel_bld->one, texel_bld->zero); /* XXX returning result for default GL_DEPTH_TEXTURE_MODE = GL_LUMINANCE */ - for(chan = 0; chan < 3; ++chan) - texel[chan] = res; + texel[0] = + texel[1] = + texel[2] = res; texel[3] = texel_bld->one; } |