diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld_format.h | 19 | ||||
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld_format_aos.c | 141 |
2 files changed, 148 insertions, 12 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_format.h b/src/gallium/drivers/llvmpipe/lp_bld_format.h index 8b08c016c00..fa560576be4 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_format.h +++ b/src/gallium/drivers/llvmpipe/lp_bld_format.h @@ -49,24 +49,19 @@ lp_build_format_swizzle_soa(const struct util_format_description *format_desc, LLVMValueRef *swizzled); -/** - * Unpack a pixel into its RGBA components. - * - * @param packed integer. - * - * @return RGBA in a 4 floats vector. - */ LLVMValueRef lp_build_unpack_rgba_aos(LLVMBuilderRef builder, const struct util_format_description *desc, LLVMValueRef packed); -/** - * Pack a pixel. - * - * @param rgba 4 float vector with the unpacked components. - */ +LLVMValueRef +lp_build_unpack_rgba8_aos(LLVMBuilderRef builder, + const struct util_format_description *desc, + struct lp_type type, + LLVMValueRef packed); + + LLVMValueRef lp_build_pack_rgba_aos(LLVMBuilderRef builder, const struct util_format_description *desc, diff --git a/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c b/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c index 0591d778600..5836e0173f9 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c +++ b/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c @@ -25,12 +25,34 @@ * **************************************************************************/ +/** + * @file + * AoS pixel format manipulation. + * + * @author Jose Fonseca <[email protected]> + */ + +#include "util/u_cpu_detect.h" #include "util/u_format.h" +#include "lp_bld_type.h" +#include "lp_bld_const.h" +#include "lp_bld_logic.h" +#include "lp_bld_swizzle.h" #include "lp_bld_format.h" +/** + * Unpack a single pixel into its RGBA components. + * + * @param packed integer. + * + * @return RGBA in a 4 floats vector. + * + * XXX: This is mostly for reference and testing -- operating a single pixel at + * a time is rarely if ever needed. + */ LLVMValueRef lp_build_unpack_rgba_aos(LLVMBuilderRef builder, const struct util_format_description *desc, @@ -148,6 +170,125 @@ lp_build_unpack_rgba_aos(LLVMBuilderRef builder, } +/** + * Take a vector with packed pixels and unpack into a rgba8 vector. + * + * Formats with bit depth smaller than 32bits are accepted, but they must be + * padded to 32bits. + */ +LLVMValueRef +lp_build_unpack_rgba8_aos(LLVMBuilderRef builder, + const struct util_format_description *desc, + struct lp_type type, + LLVMValueRef packed) +{ + struct lp_build_context bld; + bool rgba8; + LLVMValueRef res; + unsigned i; + + lp_build_context_init(&bld, builder, type); + + /* FIXME: Support more formats */ + assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); + assert(desc->block.width == 1); + assert(desc->block.height == 1); + assert(desc->block.bits <= 32); + + assert(!type.floating); + assert(!type.fixed); + assert(type.norm); + assert(type.width == 8); + assert(type.length % 4 == 0); + + rgba8 = TRUE; + for(i = 0; i < 4; ++i) { + assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED || + desc->channel[i].type == UTIL_FORMAT_TYPE_VOID); + if(desc->channel[0].size != 8) + rgba8 = FALSE; + } + + if(rgba8) { + /* + * The pixel is already in a rgba8 format variant. All it is necessary + * is to swizzle the channels. + */ + + unsigned char swizzles[4]; + boolean zeros[4]; /* bitwise AND mask */ + boolean ones[4]; /* bitwise OR mask */ + boolean swizzles_needed = FALSE; + boolean zeros_needed = FALSE; + boolean ones_needed = FALSE; + + for(i = 0; i < 4; ++i) { + enum util_format_swizzle swizzle = desc->swizzle[i]; + + /* Initialize with the no-op case */ + swizzles[i] = util_cpu_caps.little_endian ? 3 - i : i; + zeros[i] = TRUE; + ones[i] = FALSE; + + switch (swizzle) { + case UTIL_FORMAT_SWIZZLE_X: + case UTIL_FORMAT_SWIZZLE_Y: + case UTIL_FORMAT_SWIZZLE_Z: + case UTIL_FORMAT_SWIZZLE_W: + if(swizzle != swizzles[i]) { + swizzles[i] = swizzle; + swizzles_needed = TRUE; + } + break; + case UTIL_FORMAT_SWIZZLE_0: + zeros[i] = FALSE; + zeros_needed = TRUE; + break; + case UTIL_FORMAT_SWIZZLE_1: + ones[i] = TRUE; + ones_needed = TRUE; + break; + case UTIL_FORMAT_SWIZZLE_NONE: + assert(0); + break; + } + } + + res = packed; + + if(swizzles_needed) + res = lp_build_swizzle1_aos(&bld, res, swizzles); + + if(zeros_needed) { + /* Mask out zero channels */ + LLVMValueRef mask = lp_build_const_mask_aos(type, zeros); + res = LLVMBuildAnd(builder, res, mask, ""); + } + + if(ones_needed) { + /* Or one channels */ + LLVMValueRef mask = lp_build_const_mask_aos(type, ones); + res = LLVMBuildOr(builder, res, mask, ""); + } + } + else { + /* FIXME */ + assert(0); + res = lp_build_undef(type); + } + + return res; +} + + +/** + * Pack a single pixel. + * + * @param rgba 4 float vector with the unpacked components. + * + * XXX: This is mostly for reference and testing -- operating a single pixel at + * a time is rarely if ever needed. + */ LLVMValueRef lp_build_pack_rgba_aos(LLVMBuilderRef builder, const struct util_format_description *desc, |