diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_format.h')
| -rw-r--r-- | src/gallium/auxiliary/util/u_format.h | 225 |
1 files changed, 205 insertions, 20 deletions
diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h index e8fa0022b5..5e3dc694be 100644 --- a/src/gallium/auxiliary/util/u_format.h +++ b/src/gallium/auxiliary/util/u_format.h @@ -56,15 +56,23 @@ enum util_format_layout { * * This is for formats like YV12 where there is less than one sample per * pixel. - * - * XXX: This could actually b */ UTIL_FORMAT_LAYOUT_SUBSAMPLED = 3, /** - * An unspecified compression algorithm. + * S3 Texture Compression formats. + */ + UTIL_FORMAT_LAYOUT_S3TC = 4, + + /** + * Red-Green Texture Compression formats. + */ + UTIL_FORMAT_LAYOUT_RGTC = 5, + + /** + * Everything else that doesn't fit in any of the above layouts. */ - UTIL_FORMAT_LAYOUT_COMPRESSED = 4 + UTIL_FORMAT_LAYOUT_OTHER = 6 }; @@ -120,9 +128,15 @@ struct util_format_channel_description struct util_format_description { enum pipe_format format; + const char *name; /** + * Short name, striped of the prefix, lower case. + */ + const char *short_name; + + /** * Pixel block dimensions. */ struct util_format_block block; @@ -140,6 +154,15 @@ struct util_format_description unsigned is_array:1; /** + * Whether the pixel format can be described as a bitfield structure. + * + * In particular: + * - pixel depth must be 8, 16, or 32 bits; + * - all channels must be unsigned, signed, or void + */ + unsigned is_bitmask:1; + + /** * Whether channels have mixed types (ignoring UTIL_FORMAT_TYPE_VOID). */ unsigned is_mixed:1; @@ -166,6 +189,117 @@ struct util_format_description * Colorspace transformation. */ enum util_format_colorspace colorspace; + + /** + * Unpack pixel blocks to R8G8B8A8_UNORM. + * + * Only defined for non-depth-stencil formats. + */ + void + (*unpack_rgba_8unorm)(uint8_t *dst, unsigned dst_stride, + const uint8_t *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Pack pixel blocks from R8G8B8A8_UNORM. + * + * Only defined for non-depth-stencil formats. + */ + void + (*pack_rgba_8unorm)(uint8_t *dst, unsigned dst_stride, + const uint8_t *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Unpack pixel blocks to R32G32B32A32_FLOAT. + * + * Only defined for non-depth-stencil formats. + */ + void + (*unpack_rgba_float)(float *dst, unsigned dst_stride, + const uint8_t *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Pack pixel blocks from R32G32B32A32_FLOAT. + * + * Only defined for non-depth-stencil formats. + */ + void + (*pack_rgba_float)(uint8_t *dst, unsigned dst_stride, + const float *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Fetch a single pixel (i, j) from a block. + * + * Only defined for non-depth-stencil formats. + */ + void + (*fetch_rgba_float)(float *dst, + const uint8_t *src, + unsigned i, unsigned j); + + /** + * Unpack pixels to Z32_UNORM. + * + * Only defined for depth formats. + */ + void + (*unpack_z_32unorm)(uint32_t *dst, unsigned dst_stride, + const uint8_t *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Pack pixels from Z32_FLOAT. + * + * Only defined for depth formats. + */ + void + (*pack_z_32unorm)(uint8_t *dst, unsigned dst_stride, + const uint32_t *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Unpack pixels to Z32_FLOAT. + * + * Only defined for depth formats. + */ + void + (*unpack_z_float)(float *dst, unsigned dst_stride, + const uint8_t *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Pack pixels from Z32_FLOAT. + * + * Only defined for depth formats. + */ + void + (*pack_z_float)(uint8_t *dst, unsigned dst_stride, + const float *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Unpack pixels to S8_USCALED. + * + * Only defined for stencil formats. + */ + void + (*unpack_s_8uscaled)(uint8_t *dst, unsigned dst_stride, + const uint8_t *src, unsigned src_stride, + unsigned width, unsigned height); + + /** + * Pack pixels from S8_USCALED. + * + * Only defined for stencil formats. + */ + void + (*pack_s_8uscaled)(uint8_t *dst, unsigned dst_stride, + const uint8_t *src, unsigned src_stride, + unsigned width, unsigned height); + }; @@ -186,8 +320,8 @@ util_format_name(enum pipe_format format) { const struct util_format_description *desc = util_format_description(format); - assert(format); - if (!format) { + assert(desc); + if (!desc) { return "???"; } @@ -195,16 +329,16 @@ util_format_name(enum pipe_format format) } static INLINE boolean -util_format_is_compressed(enum pipe_format format) +util_format_is_s3tc(enum pipe_format format) { const struct util_format_description *desc = util_format_description(format); - assert(format); - if (!format) { + assert(desc); + if (!desc) { return FALSE; } - return desc->layout == UTIL_FORMAT_LAYOUT_COMPRESSED ? TRUE : FALSE; + return desc->layout == UTIL_FORMAT_LAYOUT_S3TC ? TRUE : FALSE; } static INLINE boolean @@ -212,8 +346,8 @@ util_format_is_depth_or_stencil(enum pipe_format format) { const struct util_format_description *desc = util_format_description(format); - assert(format); - if (!format) { + assert(desc); + if (!desc) { return FALSE; } @@ -225,8 +359,8 @@ util_format_is_depth_and_stencil(enum pipe_format format) { const struct util_format_description *desc = util_format_description(format); - assert(format); - if (!format) { + assert(desc); + if (!desc) { return FALSE; } @@ -238,6 +372,34 @@ util_format_is_depth_and_stencil(enum pipe_format format) desc->swizzle[1] != UTIL_FORMAT_SWIZZLE_NONE) ? TRUE : FALSE; } +/** + * Whether this format is a rgab8 variant. + * + * That is, any format that matches the + * + * PIPE_FORMAT_?8?8?8?8_UNORM + */ +static INLINE boolean +util_format_is_rgba8_variant(const struct util_format_description *desc) +{ + unsigned chan; + + if(desc->block.width != 1 || + desc->block.height != 1 || + desc->block.bits != 32) + return FALSE; + + for(chan = 0; chan < 4; ++chan) { + if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED && + desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID) + return FALSE; + if(desc->channel[chan].size != 8) + return FALSE; + } + + return TRUE; +} + /** * Return total bits needed for the pixel format per block. @@ -247,8 +409,8 @@ util_format_get_blocksizebits(enum pipe_format format) { const struct util_format_description *desc = util_format_description(format); - assert(format); - if (!format) { + assert(desc); + if (!desc) { return 0; } @@ -273,8 +435,8 @@ util_format_get_blockwidth(enum pipe_format format) { const struct util_format_description *desc = util_format_description(format); - assert(format); - if (!format) { + assert(desc); + if (!desc) { return 1; } @@ -286,8 +448,8 @@ util_format_get_blockheight(enum pipe_format format) { const struct util_format_description *desc = util_format_description(format); - assert(format); - if (!format) { + assert(desc); + if (!desc) { return 1; } @@ -400,6 +562,16 @@ util_format_has_alpha(enum pipe_format format) } } +/** + * Return the number of components stored. + * Formats with block size != 1x1 will always have 1 component (the block). + */ +static INLINE unsigned +util_format_get_nr_components(enum pipe_format format) +{ + const struct util_format_description *desc = util_format_description(format); + return desc->nr_channels; +} /* * Format access functions. @@ -429,6 +601,19 @@ util_format_write_4ub(enum pipe_format format, void *dst, unsigned dst_stride, unsigned x, unsigned y, unsigned w, unsigned h); +/* + * Generic format conversion; + */ + +void +util_format_translate(enum pipe_format dst_format, + void *dst, unsigned dst_stride, + unsigned dst_x, unsigned dst_y, + enum pipe_format src_format, + const void *src, unsigned src_stride, + unsigned src_x, unsigned src_y, + unsigned width, unsigned height); + #ifdef __cplusplus } // extern "C" { #endif |