diff options
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 114 |
1 files changed, 60 insertions, 54 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c index ba62d7a013b..29845c65d03 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -1420,26 +1420,26 @@ lp_build_cube_lookup(struct lp_build_sample_context *bld, * If we're using nearest miplevel sampling the '1' values will be null/unused. */ static void -lp_sample_mipmap(struct lp_build_sample_context *bld, - unsigned img_filter, - unsigned mip_filter, - LLVMValueRef s, - LLVMValueRef t, - LLVMValueRef r, - LLVMValueRef lod_fpart, - LLVMValueRef width0_vec, - LLVMValueRef width1_vec, - LLVMValueRef height0_vec, - LLVMValueRef height1_vec, - LLVMValueRef depth0_vec, - LLVMValueRef depth1_vec, - LLVMValueRef row_stride0_vec, - LLVMValueRef row_stride1_vec, - LLVMValueRef img_stride0_vec, - LLVMValueRef img_stride1_vec, - LLVMValueRef data_ptr0, - LLVMValueRef data_ptr1, - LLVMValueRef *colors_out) +lp_build_sample_mipmap(struct lp_build_sample_context *bld, + unsigned img_filter, + unsigned mip_filter, + LLVMValueRef s, + LLVMValueRef t, + LLVMValueRef r, + LLVMValueRef lod_fpart, + LLVMValueRef width0_vec, + LLVMValueRef width1_vec, + LLVMValueRef height0_vec, + LLVMValueRef height1_vec, + LLVMValueRef depth0_vec, + LLVMValueRef depth1_vec, + LLVMValueRef row_stride0_vec, + LLVMValueRef row_stride1_vec, + LLVMValueRef img_stride0_vec, + LLVMValueRef img_stride1_vec, + LLVMValueRef data_ptr0, + LLVMValueRef data_ptr1, + LLVMValueRef *colors_out) { LLVMValueRef colors0[4], colors1[4]; int chan; @@ -1533,20 +1533,24 @@ lp_build_sample_general(struct lp_build_sample_context *bld, */ /* - * Compute the level of detail (mipmap level index(es)). + * Compute the level of detail (float). + */ + if (min_filter != mag_filter || + mip_filter != PIPE_TEX_MIPFILTER_NONE) { + /* Need to compute lod either to choose mipmap levels or to + * distinguish between minification/magnification with one mipmap level. + */ + lod = lp_build_lod_selector(bld, s, t, r, width, height, depth); + } + + /* + * Compute integer mipmap level(s) to fetch texels from. */ if (mip_filter == PIPE_TEX_MIPFILTER_NONE) { /* always use mip level 0 */ ilevel0 = LLVMConstInt(LLVMInt32Type(), 0, 0); - - /* XXX temporary here */ - lod = lp_build_lod_selector(bld, s, t, r, width, height, depth); - } else { - /* compute float LOD */ - lod = lp_build_lod_selector(bld, s, t, r, width, height, depth); - if (mip_filter == PIPE_TEX_MIPFILTER_NEAREST) { lp_build_nearest_mip_level(bld, unit, lod, &ilevel0); } @@ -1582,7 +1586,7 @@ lp_build_sample_general(struct lp_build_sample_context *bld, } } if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { - /* compute width, height, depth for second mipmap level at ilevel1 */ + /* compute width, height, depth for second mipmap level at 'ilevel1' */ width1_vec = lp_build_minify(bld, width_vec, ilevel1_vec); if (dims >= 2) { height1_vec = lp_build_minify(bld, height_vec, ilevel1_vec); @@ -1599,7 +1603,7 @@ lp_build_sample_general(struct lp_build_sample_context *bld, } /* - * Choose cube face, recompute texcoords. + * Choose cube face, recompute per-face texcoords. */ if (bld->static_state->target == PIPE_TEXTURE_CUBE) { LLVMValueRef face, face_s, face_t; @@ -1623,14 +1627,14 @@ lp_build_sample_general(struct lp_build_sample_context *bld, */ if (min_filter == mag_filter) { /* no need to distinquish between minification and magnification */ - lp_sample_mipmap(bld, min_filter, mip_filter, s, t, r, lod_fpart, - width0_vec, width1_vec, - height0_vec, height1_vec, - depth0_vec, depth1_vec, - row_stride0_vec, row_stride1_vec, - img_stride0_vec, img_stride1_vec, - data_ptr0, data_ptr1, - colors_out); + lp_build_sample_mipmap(bld, min_filter, mip_filter, s, t, r, lod_fpart, + width0_vec, width1_vec, + height0_vec, height1_vec, + depth0_vec, depth1_vec, + row_stride0_vec, row_stride1_vec, + img_stride0_vec, img_stride1_vec, + data_ptr0, data_ptr1, + colors_out); } else { /* Emit conditional to choose min image filter or mag image filter @@ -1655,26 +1659,28 @@ lp_build_sample_general(struct lp_build_sample_context *bld, lp_build_if(&if_ctx, flow_ctx, bld->builder, minify); { /* Use the minification filter */ - lp_sample_mipmap(bld, min_filter, mip_filter, s, t, r, lod_fpart, - width0_vec, width1_vec, - height0_vec, height1_vec, - depth0_vec, depth1_vec, - row_stride0_vec, row_stride1_vec, - img_stride0_vec, img_stride1_vec, - data_ptr0, data_ptr1, - colors_out); + lp_build_sample_mipmap(bld, min_filter, mip_filter, + s, t, r, lod_fpart, + width0_vec, width1_vec, + height0_vec, height1_vec, + depth0_vec, depth1_vec, + row_stride0_vec, row_stride1_vec, + img_stride0_vec, img_stride1_vec, + data_ptr0, data_ptr1, + colors_out); } lp_build_else(&if_ctx); { /* Use the magnification filter */ - lp_sample_mipmap(bld, mag_filter, mip_filter, s, t, r, lod_fpart, - width0_vec, width1_vec, - height0_vec, height1_vec, - depth0_vec, depth1_vec, - row_stride0_vec, row_stride1_vec, - img_stride0_vec, img_stride1_vec, - data_ptr0, data_ptr1, - colors_out); + lp_build_sample_mipmap(bld, mag_filter, mip_filter, + s, t, r, lod_fpart, + width0_vec, width1_vec, + height0_vec, height1_vec, + depth0_vec, depth1_vec, + row_stride0_vec, row_stride1_vec, + img_stride0_vec, img_stride1_vec, + data_ptr0, data_ptr1, + colors_out); } lp_build_endif(&if_ctx); |