From: José Fonseca Date: Thu, 22 Oct 2009 21:37:06 +0000 (+0100) Subject: llvmpipe: Factor our pixel offset computation. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bc93e9181cf179a797679d30cd1a3a563e1756c0;p=mesa.git llvmpipe: Factor our pixel offset computation. --- diff --git a/src/gallium/drivers/llvmpipe/lp_bld_sample.c b/src/gallium/drivers/llvmpipe/lp_bld_sample.c index b0543f22c93..4d272bea87e 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_sample.c +++ b/src/gallium/drivers/llvmpipe/lp_bld_sample.c @@ -37,6 +37,9 @@ #include "util/u_format.h" #include "util/u_math.h" #include "lp_bld_debug.h" +#include "lp_bld_const.h" +#include "lp_bld_arit.h" +#include "lp_bld_type.h" #include "lp_bld_format.h" #include "lp_bld_sample.h" @@ -122,3 +125,66 @@ lp_build_gather(LLVMBuilderRef builder, return res; } + + +/** + * Compute the offset of a pixel. + * + * x, y, y_stride are vectors + */ +LLVMValueRef +lp_build_sample_offset(struct lp_build_context *bld, + const struct util_format_description *format_desc, + LLVMValueRef x, + LLVMValueRef y, + LLVMValueRef y_stride, + LLVMValueRef data_ptr) +{ + LLVMValueRef x_stride; + LLVMValueRef offset; + + x_stride = lp_build_const_scalar(bld->type, format_desc->block.bits/8); + + if(format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) { + LLVMValueRef x_lo, x_hi; + LLVMValueRef y_lo, y_hi; + LLVMValueRef x_stride_lo, x_stride_hi; + LLVMValueRef y_stride_lo, y_stride_hi; + LLVMValueRef x_offset_lo, x_offset_hi; + LLVMValueRef y_offset_lo, y_offset_hi; + LLVMValueRef offset_lo, offset_hi; + + x_lo = LLVMBuildAnd(bld->builder, x, bld->one, ""); + y_lo = LLVMBuildAnd(bld->builder, y, bld->one, ""); + + x_hi = LLVMBuildLShr(bld->builder, x, bld->one, ""); + y_hi = LLVMBuildLShr(bld->builder, y, bld->one, ""); + + x_stride_lo = x_stride; + y_stride_lo = lp_build_const_scalar(bld->type, 2*format_desc->block.bits/8); + + x_stride_hi = lp_build_const_scalar(bld->type, 4*format_desc->block.bits/8); + y_stride_hi = LLVMBuildShl(bld->builder, y_stride, bld->one, ""); + + x_offset_lo = lp_build_mul(bld, x_lo, x_stride_lo); + y_offset_lo = lp_build_mul(bld, y_lo, y_stride_lo); + offset_lo = lp_build_add(bld, x_offset_lo, y_offset_lo); + + x_offset_hi = lp_build_mul(bld, x_hi, x_stride_hi); + y_offset_hi = lp_build_mul(bld, y_hi, y_stride_hi); + offset_hi = lp_build_add(bld, x_offset_hi, y_offset_hi); + + offset = lp_build_add(bld, offset_hi, offset_lo); + } + else { + LLVMValueRef x_offset; + LLVMValueRef y_offset; + + x_offset = lp_build_mul(bld, x, x_stride); + y_offset = lp_build_mul(bld, y, y_stride); + + offset = lp_build_add(bld, x_offset, y_offset); + } + + return offset; +} diff --git a/src/gallium/drivers/llvmpipe/lp_bld_sample.h b/src/gallium/drivers/llvmpipe/lp_bld_sample.h index 2b56179eb81..8cb8210ca76 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_sample.h +++ b/src/gallium/drivers/llvmpipe/lp_bld_sample.h @@ -40,7 +40,9 @@ struct pipe_texture; struct pipe_sampler_state; +struct util_format_description; struct lp_type; +struct lp_build_context; /** @@ -128,6 +130,15 @@ lp_build_gather(LLVMBuilderRef builder, LLVMValueRef offsets); +LLVMValueRef +lp_build_sample_offset(struct lp_build_context *bld, + const struct util_format_description *format_desc, + LLVMValueRef x, + LLVMValueRef y, + LLVMValueRef y_stride, + LLVMValueRef data_ptr); + + void lp_build_sample_soa(LLVMBuilderRef builder, const struct lp_sampler_static_state *static_state, diff --git a/src/gallium/drivers/llvmpipe/lp_bld_sample_soa.c b/src/gallium/drivers/llvmpipe/lp_bld_sample_soa.c index 4af0454935f..6aa7ad4b456 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_sample_soa.c +++ b/src/gallium/drivers/llvmpipe/lp_bld_sample_soa.c @@ -106,51 +106,14 @@ lp_build_sample_texel(struct lp_build_sample_context *bld, LLVMValueRef *texel) { struct lp_build_context *int_coord_bld = &bld->int_coord_bld; - LLVMValueRef x_stride; LLVMValueRef offset; - x_stride = lp_build_const_scalar(bld->int_coord_type, bld->format_desc->block.bits/8); - - if(bld->format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) { - LLVMValueRef x_lo, x_hi; - LLVMValueRef y_lo, y_hi; - LLVMValueRef x_stride_lo, x_stride_hi; - LLVMValueRef y_stride_lo, y_stride_hi; - LLVMValueRef x_offset_lo, x_offset_hi; - LLVMValueRef y_offset_lo, y_offset_hi; - LLVMValueRef offset_lo, offset_hi; - - x_lo = LLVMBuildAnd(bld->builder, x, int_coord_bld->one, ""); - y_lo = LLVMBuildAnd(bld->builder, y, int_coord_bld->one, ""); - - x_hi = LLVMBuildLShr(bld->builder, x, int_coord_bld->one, ""); - y_hi = LLVMBuildLShr(bld->builder, y, int_coord_bld->one, ""); - - x_stride_lo = x_stride; - y_stride_lo = lp_build_const_scalar(bld->int_coord_type, 2*bld->format_desc->block.bits/8); - - x_stride_hi = lp_build_const_scalar(bld->int_coord_type, 4*bld->format_desc->block.bits/8); - y_stride_hi = LLVMBuildShl(bld->builder, y_stride, int_coord_bld->one, ""); - - x_offset_lo = lp_build_mul(int_coord_bld, x_lo, x_stride_lo); - y_offset_lo = lp_build_mul(int_coord_bld, y_lo, y_stride_lo); - offset_lo = lp_build_add(int_coord_bld, x_offset_lo, y_offset_lo); - - x_offset_hi = lp_build_mul(int_coord_bld, x_hi, x_stride_hi); - y_offset_hi = lp_build_mul(int_coord_bld, y_hi, y_stride_hi); - offset_hi = lp_build_add(int_coord_bld, x_offset_hi, y_offset_hi); - - offset = lp_build_add(int_coord_bld, offset_hi, offset_lo); - } - else { - LLVMValueRef x_offset; - LLVMValueRef y_offset; - - x_offset = lp_build_mul(int_coord_bld, x, x_stride); - y_offset = lp_build_mul(int_coord_bld, y, y_stride); - - offset = lp_build_add(int_coord_bld, x_offset, y_offset); - } + offset = lp_build_sample_offset(&bld->int_coord_bld, + bld->format_desc, + x, + y, + y_stride, + data_ptr); lp_build_load_rgba_soa(bld->builder, bld->format_desc,