diff options
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 40 |
1 files changed, 40 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 ff508e20b42..378c562bb9f 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -3297,7 +3297,47 @@ lp_build_sample_soa(const struct lp_static_texture_state *static_texture_state, struct gallivm_state *gallivm, const struct lp_sampler_params *params) { + boolean use_tex_func = FALSE; + + /* + * Do not use a function call if the sampling is "simple enough". + * We define this by + * a) format + * b) no mips (either one level only or no mip filter) + * No mips will definitely make the code smaller, though + * the format requirement is a bit iffy - there's some (SoA) formats + * which definitely generate less code. This does happen to catch + * some important cases though which are hurt quite a bit by using + * a call (though not really because of the call overhead but because + * they are reusing the same texture unit with some of the same + * parameters). + * Ideally we'd let llvm recognize this stuff by doing IPO passes. + */ + if (USE_TEX_FUNC_CALL) { + const struct util_format_description *format_desc; + boolean simple_format; + boolean simple_tex; + enum lp_sampler_op_type op_type; + format_desc = util_format_description(static_texture_state->format); + simple_format = !format_desc || + (util_format_is_rgba8_variant(format_desc) && + format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB); + + op_type = (params->sample_key & LP_SAMPLER_OP_TYPE_MASK) >> + LP_SAMPLER_OP_TYPE_SHIFT; + simple_tex = + op_type != LP_SAMPLER_OP_TEXTURE || + ((static_sampler_state->min_mip_filter == PIPE_TEX_MIPFILTER_NONE || + static_texture_state->level_zero_only == TRUE) && + static_sampler_state->min_img_filter == static_sampler_state->mag_img_filter && + (static_sampler_state->min_img_filter == PIPE_TEX_FILTER_NEAREST || + static_sampler_state->min_img_filter == PIPE_TEX_FILTER_NEAREST)); + + use_tex_func = format_desc && !(simple_format && simple_tex); + } + + if (use_tex_func) { lp_build_sample_soa_func(gallivm, static_texture_state, static_sampler_state, |