diff options
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c index f1371d909ea..2e6865a67b3 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -1028,6 +1028,76 @@ lp_build_sample_2d_nearest_mip_nearest_soa(struct lp_build_sample_context *bld, /** + * Sample 2D texture with linear filtering, nearest mipmap. + */ +static void +lp_build_sample_2d_linear_mip_nearest_soa(struct lp_build_sample_context *bld, + unsigned unit, + LLVMValueRef s, + LLVMValueRef t, + LLVMValueRef width, + LLVMValueRef height, + LLVMValueRef width_vec, + LLVMValueRef height_vec, + LLVMValueRef stride, + LLVMValueRef data_array, + LLVMValueRef *texel) +{ + LLVMValueRef x0, y0, x1, y1, s_fpart, t_fpart; + LLVMValueRef lod, ilevel, ilevel_vec; + LLVMValueRef neighbors[2][2][4]; + LLVMValueRef data_ptr; + int chan; + + /* compute float LOD */ + lod = lp_build_lod_selector(bld, s, t, NULL, width, height, NULL); + + /* convert LOD to int */ + lp_build_nearest_mip_level(bld, unit, lod, &ilevel); + + ilevel_vec = lp_build_broadcast_scalar(&bld->int_coord_bld, ilevel); + + /* compute width_vec, height at mipmap level 'ilevel' */ + width_vec = lp_build_minify(bld, width_vec, ilevel_vec); + height_vec = lp_build_minify(bld, height_vec, ilevel_vec); + stride = lp_build_minify(bld, stride, ilevel_vec); + + lp_build_sample_wrap_linear(bld, s, width_vec, + bld->static_state->pot_width, + bld->static_state->wrap_s, &x0, &x1, &s_fpart); + lp_build_sample_wrap_linear(bld, t, height_vec, + bld->static_state->pot_height, + bld->static_state->wrap_t, &y0, &y1, &t_fpart); + + lp_build_name(x0, "tex.x0.wrapped"); + lp_build_name(y0, "tex.y0.wrapped"); + lp_build_name(x1, "tex.x1.wrapped"); + lp_build_name(y1, "tex.y1.wrapped"); + + /* get pointer to mipmap level [ilevel] data */ + data_ptr = lp_build_get_mipmap_level(bld, data_array, ilevel); + + lp_build_sample_texel_soa(bld, width_vec, height_vec, x0, y0, + stride, data_ptr, neighbors[0][0]); + lp_build_sample_texel_soa(bld, width_vec, height_vec, x1, y0, + stride, data_ptr, neighbors[0][1]); + lp_build_sample_texel_soa(bld, width_vec, height_vec, x0, y1, + stride, data_ptr, neighbors[1][0]); + lp_build_sample_texel_soa(bld, width_vec, height_vec, x1, y1, + stride, data_ptr, neighbors[1][1]); + + for(chan = 0; chan < 4; ++chan) { + texel[chan] = lp_build_lerp_2d(&bld->texel_bld, + s_fpart, t_fpart, + neighbors[0][0][chan], + neighbors[0][1][chan], + neighbors[1][0][chan], + neighbors[1][1][chan]); + } +} + + +/** * Sample 2D texture with bilinear filtering. */ static void @@ -1413,6 +1483,15 @@ lp_build_sample_soa(LLVMBuilderRef builder, case PIPE_TEX_MIPFILTER_NEAREST: switch (static_state->min_img_filter) { + case PIPE_TEX_FILTER_LINEAR: + lp_build_sample_2d_linear_mip_nearest_soa(&bld, unit, + s, t, + width, height, + width_vec, height_vec, + stride_vec, + data_array, texel); + done = TRUE; + break; case PIPE_TEX_FILTER_NEAREST: lp_build_sample_2d_nearest_mip_nearest_soa(&bld, unit, s, t, |