Added extra needed files

1 files changed, 822 insertions, 0 deletions

diff --git a/mesalib/src/gallium/auxiliary/util/u_format.h b/mesalib/src/gallium/auxiliary/util/u_format.h
new file mode 100644
index 000000000..6e9b6902e
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_format.h
@@ -0,0 +1,822 @@
+/**************************************************************************

+ *

+ * Copyright 2009-2010 Vmware, Inc.

+ * All Rights Reserved.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the

+ * "Software"), to deal in the Software without restriction, including

+ * without limitation the rights to use, copy, modify, merge, publish,

+ * distribute, sub license, and/or sell copies of the Software, and to

+ * permit persons to whom the Software is furnished to do so, subject to

+ * the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the

+ * next paragraph) shall be included in all copies or substantial portions

+ * of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR

+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

+ *

+ **************************************************************************/

+

+

+#ifndef U_FORMAT_H

+#define U_FORMAT_H

+

+

+#include "pipe/p_format.h"

+#include "util/u_debug.h"

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+

+

+/**

+ * Describe how to pack/unpack pixels into/from the prescribed format.

+ *

+ * XXX: This could be renamed to something like util_format_pack, or broke down

+ * in flags inside util_format_block that said exactly what we want.

+ */

+enum util_format_layout {

+   /**

+    * Formats with util_format_block::width == util_format_block::height == 1

+    * that can be described as an ordinary data structure.

+    */

+   UTIL_FORMAT_LAYOUT_PLAIN = 0,

+

+   /**

+    * Formats with sub-sampled channels.

+    *

+    * This is for formats like YV12 where there is less than one sample per

+    * pixel.

+    */

+   UTIL_FORMAT_LAYOUT_SUBSAMPLED = 3,

+

+   /**

+    * 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_OTHER = 6

+};

+

+

+struct util_format_block

+{

+   /** Block width in pixels */

+   unsigned width;

+   

+   /** Block height in pixels */

+   unsigned height;

+

+   /** Block size in bits */

+   unsigned bits;

+};

+

+

+enum util_format_type {

+   UTIL_FORMAT_TYPE_VOID = 0,

+   UTIL_FORMAT_TYPE_UNSIGNED = 1,

+   UTIL_FORMAT_TYPE_SIGNED = 2,

+   UTIL_FORMAT_TYPE_FIXED = 3,

+   UTIL_FORMAT_TYPE_FLOAT = 4

+};

+

+

+enum util_format_swizzle {

+   UTIL_FORMAT_SWIZZLE_X = 0,

+   UTIL_FORMAT_SWIZZLE_Y = 1,

+   UTIL_FORMAT_SWIZZLE_Z = 2,

+   UTIL_FORMAT_SWIZZLE_W = 3,

+   UTIL_FORMAT_SWIZZLE_0 = 4,

+   UTIL_FORMAT_SWIZZLE_1 = 5,

+   UTIL_FORMAT_SWIZZLE_NONE = 6

+};

+

+

+enum util_format_colorspace {

+   UTIL_FORMAT_COLORSPACE_RGB = 0,

+   UTIL_FORMAT_COLORSPACE_SRGB = 1,

+   UTIL_FORMAT_COLORSPACE_YUV = 2,

+   UTIL_FORMAT_COLORSPACE_ZS = 3

+};

+

+

+struct util_format_channel_description

+{

+   unsigned type:6;

+   unsigned normalized:1;

+   unsigned size:9;

+};

+

+

+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;

+

+   enum util_format_layout layout;

+

+   /**

+    * The number of channels.

+    */

+   unsigned nr_channels:3;

+

+   /**

+    * Whether all channels have the same number of (whole) bytes.

+    */

+   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;

+

+   /**

+    * Input channel description.

+    *

+    * Only valid for UTIL_FORMAT_LAYOUT_PLAIN formats.

+    */

+   struct util_format_channel_description channel[4];

+

+   /**

+    * Output channel swizzle.

+    *

+    * The order is either:

+    * - RGBA

+    * - YUV(A)

+    * - ZS

+    * depending on the colorspace.

+    */

+   unsigned char swizzle[4];

+

+   /**

+    * Colorspace transformation.

+    */

+   enum util_format_colorspace colorspace;

+

+   /**

+    * Unpack pixel blocks to R8G8B8A8_UNORM.

+    * Note: strides are in bytes.

+    *

+    * 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.

+    * Note: strides are in bytes.

+    *

+    * 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);

+

+   /**

+    * Fetch a single pixel (i, j) from a block.

+    *

+    * XXX: Only defined for a very few select formats.

+    */

+   void

+   (*fetch_rgba_8unorm)(uint8_t *dst,

+                        const uint8_t *src,

+                        unsigned i, unsigned j);

+

+   /**

+    * Unpack pixel blocks to R32G32B32A32_FLOAT.

+    * Note: strides are in bytes.

+    *

+    * 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.

+    * Note: strides are in bytes.

+    *

+    * 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.

+    * Note: strides are in bytes.

+    *

+    * 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.

+    * Note: strides are in bytes.

+    *

+    * 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.

+    * Note: strides are in bytes.

+    *

+    * 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.

+    * Note: strides are in bytes.

+    *

+    * 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.

+    * Note: strides are in bytes.

+    *

+    * 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.

+    * Note: strides are in bytes.

+    *

+    * 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);

+

+};

+

+

+extern const struct util_format_description 

+util_format_description_table[];

+

+

+const struct util_format_description *

+util_format_description(enum pipe_format format);

+

+

+/*

+ * Format query functions.

+ */

+

+static INLINE const char *

+util_format_name(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return "PIPE_FORMAT_???";

+   }

+

+   return desc->name;

+}

+

+static INLINE const char *

+util_format_short_name(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return "???";

+   }

+

+   return desc->short_name;

+}

+

+/**

+ * Whether this format is plain, see UTIL_FORMAT_LAYOUT_PLAIN for more info.

+ */

+static INLINE boolean

+util_format_is_plain(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   if (!format) {

+      return FALSE;

+   }

+

+   return desc->layout == UTIL_FORMAT_LAYOUT_PLAIN ? TRUE : FALSE;

+}

+

+static INLINE boolean 

+util_format_is_compressed(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return FALSE;

+   }

+

+   switch (desc->layout) {

+   case UTIL_FORMAT_LAYOUT_S3TC:

+   case UTIL_FORMAT_LAYOUT_RGTC:

+      /* XXX add other formats in the future */

+      return TRUE;

+   default:

+      return FALSE;

+   }

+}

+

+static INLINE boolean 

+util_format_is_s3tc(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return FALSE;

+   }

+

+   return desc->layout == UTIL_FORMAT_LAYOUT_S3TC ? TRUE : FALSE;

+}

+

+static INLINE boolean 

+util_format_is_depth_or_stencil(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return FALSE;

+   }

+

+   return desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS ? TRUE : FALSE;

+}

+

+static INLINE boolean 

+util_format_is_depth_and_stencil(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return FALSE;

+   }

+

+   if (desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS) {

+      return FALSE;

+   }

+

+   return (desc->swizzle[0] != UTIL_FORMAT_SWIZZLE_NONE &&

+           desc->swizzle[1] != UTIL_FORMAT_SWIZZLE_NONE) ? TRUE : FALSE;

+}

+

+

+/**

+ * Give the RGBA colormask of the channels that can be represented in this

+ * format.

+ *

+ * That is, the channels whose values are preserved.

+ */

+static INLINE unsigned

+util_format_colormask(const struct util_format_description *desc)

+{

+   unsigned colormask;

+   unsigned chan;

+

+   switch (desc->colorspace) {

+   case UTIL_FORMAT_COLORSPACE_RGB:

+   case UTIL_FORMAT_COLORSPACE_SRGB:

+   case UTIL_FORMAT_COLORSPACE_YUV:

+      colormask = 0;

+      for (chan = 0; chan < 4; ++chan) {

+         if (desc->swizzle[chan] < 4) {

+            colormask |= (1 << chan);

+         }

+      }

+      return colormask;

+   case UTIL_FORMAT_COLORSPACE_ZS:

+      return 0;

+   default:

+      assert(0);

+      return 0;

+   }

+}

+

+

+boolean

+util_format_is_float(enum pipe_format format);

+

+

+/**

+ * Whether the src format can be blitted to destation format with a simple

+ * memcpy.

+ */

+boolean

+util_is_format_compatible(const struct util_format_description *src_desc,

+                          const struct util_format_description *dst_desc);

+

+/**

+ * Whether the format is supported by Gallium for the given bindings.

+ * This covers S3TC textures and floating-point render targets.

+ */

+boolean

+util_format_is_supported(enum pipe_format format, unsigned bind);

+

+/**

+ * 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.

+ */

+static INLINE uint

+util_format_get_blocksizebits(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return 0;

+   }

+

+   return desc->block.bits;

+}

+

+/**

+ * Return bytes per block (not pixel) for the given format.

+ */

+static INLINE uint

+util_format_get_blocksize(enum pipe_format format)

+{

+   uint bits = util_format_get_blocksizebits(format);

+

+   assert(bits % 8 == 0);

+

+   return bits / 8;

+}

+

+static INLINE uint

+util_format_get_blockwidth(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return 1;

+   }

+

+   return desc->block.width;

+}

+

+static INLINE uint

+util_format_get_blockheight(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(desc);

+   if (!desc) {

+      return 1;

+   }

+

+   return desc->block.height;

+}

+

+static INLINE unsigned

+util_format_get_nblocksx(enum pipe_format format,

+                         unsigned x)

+{

+   unsigned blockwidth = util_format_get_blockwidth(format);

+   return (x + blockwidth - 1) / blockwidth;

+}

+

+static INLINE unsigned

+util_format_get_nblocksy(enum pipe_format format,

+                         unsigned y)

+{

+   unsigned blockheight = util_format_get_blockheight(format);

+   return (y + blockheight - 1) / blockheight;

+}

+

+static INLINE unsigned

+util_format_get_nblocks(enum pipe_format format,

+                        unsigned width,

+                        unsigned height)

+{

+   return util_format_get_nblocksx(format, width) * util_format_get_nblocksy(format, height);

+}

+

+static INLINE size_t

+util_format_get_stride(enum pipe_format format,

+                       unsigned width)

+{

+   return util_format_get_nblocksx(format, width) * util_format_get_blocksize(format);

+}

+

+static INLINE size_t

+util_format_get_2d_size(enum pipe_format format,

+                        size_t stride,

+                        unsigned height)

+{

+   return util_format_get_nblocksy(format, height) * stride;

+}

+

+static INLINE uint

+util_format_get_component_bits(enum pipe_format format,

+                               enum util_format_colorspace colorspace,

+                               uint component)

+{

+   const struct util_format_description *desc = util_format_description(format);

+   enum util_format_colorspace desc_colorspace;

+

+   assert(format);

+   if (!format) {

+      return 0;

+   }

+

+   assert(component < 4);

+

+   /* Treat RGB and SRGB as equivalent. */

+   if (colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {

+      colorspace = UTIL_FORMAT_COLORSPACE_RGB;

+   }

+   if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {

+      desc_colorspace = UTIL_FORMAT_COLORSPACE_RGB;

+   } else {

+      desc_colorspace = desc->colorspace;

+   }

+

+   if (desc_colorspace != colorspace) {

+      return 0;

+   }

+

+   switch (desc->swizzle[component]) {

+   case UTIL_FORMAT_SWIZZLE_X:

+      return desc->channel[0].size;

+   case UTIL_FORMAT_SWIZZLE_Y:

+      return desc->channel[1].size;

+   case UTIL_FORMAT_SWIZZLE_Z:

+      return desc->channel[2].size;

+   case UTIL_FORMAT_SWIZZLE_W:

+      return desc->channel[3].size;

+   default:

+      return 0;

+   }

+}

+

+static INLINE boolean

+util_format_has_alpha(enum pipe_format format)

+{

+   const struct util_format_description *desc = util_format_description(format);

+

+   assert(format);

+   if (!format) {

+      return FALSE;

+   }

+

+   switch (desc->colorspace) {

+   case UTIL_FORMAT_COLORSPACE_RGB:

+   case UTIL_FORMAT_COLORSPACE_SRGB:

+      return desc->swizzle[3] != UTIL_FORMAT_SWIZZLE_1;

+   case UTIL_FORMAT_COLORSPACE_YUV:

+      return FALSE;

+   case UTIL_FORMAT_COLORSPACE_ZS:

+      return FALSE;

+   default:

+      assert(0);

+      return FALSE;

+   }

+}

+

+/**

+ * Given a linear RGB colorspace format, return the corresponding SRGB

+ * format, or PIPE_FORMAT_NONE if none.

+ */

+static INLINE enum pipe_format

+util_format_srgb(enum pipe_format format)

+{

+   switch (format) {

+   case PIPE_FORMAT_L8_UNORM:

+      return PIPE_FORMAT_L8_SRGB;

+   case PIPE_FORMAT_L8A8_UNORM:

+      return PIPE_FORMAT_L8A8_SRGB;

+   case PIPE_FORMAT_R8G8B8_UNORM:

+      return PIPE_FORMAT_R8G8B8_SRGB;

+   case PIPE_FORMAT_A8B8G8R8_UNORM:

+      return PIPE_FORMAT_A8B8G8R8_SRGB;

+   case PIPE_FORMAT_X8B8G8R8_UNORM:

+      return PIPE_FORMAT_X8B8G8R8_SRGB;

+   case PIPE_FORMAT_B8G8R8A8_UNORM:

+      return PIPE_FORMAT_B8G8R8A8_SRGB;

+   case PIPE_FORMAT_B8G8R8X8_UNORM:

+      return PIPE_FORMAT_B8G8R8X8_SRGB;

+   case PIPE_FORMAT_A8R8G8B8_UNORM:

+      return PIPE_FORMAT_A8R8G8B8_SRGB;

+   case PIPE_FORMAT_X8R8G8B8_UNORM:

+      return PIPE_FORMAT_X8R8G8B8_SRGB;

+   case PIPE_FORMAT_DXT1_RGB:

+      return PIPE_FORMAT_DXT1_SRGB;

+   case PIPE_FORMAT_DXT1_RGBA:

+      return PIPE_FORMAT_DXT1_SRGBA;

+   case PIPE_FORMAT_DXT3_RGBA:

+      return PIPE_FORMAT_DXT3_SRGBA;

+   case PIPE_FORMAT_DXT5_RGBA:

+      return PIPE_FORMAT_DXT5_SRGBA;

+   default:

+      return PIPE_FORMAT_NONE;

+   }

+}

+

+/**

+ * Given an sRGB format, return the corresponding linear colorspace format.

+ * For non sRGB formats, return the format unchanged.

+ */

+static INLINE enum pipe_format

+util_format_linear(enum pipe_format format)

+{

+   switch (format) {

+   case PIPE_FORMAT_L8_SRGB:

+      return PIPE_FORMAT_L8_UNORM;

+   case PIPE_FORMAT_L8A8_SRGB:

+      return PIPE_FORMAT_L8A8_UNORM;

+   case PIPE_FORMAT_R8G8B8_SRGB:

+      return PIPE_FORMAT_R8G8B8_UNORM;

+   case PIPE_FORMAT_A8B8G8R8_SRGB:

+      return PIPE_FORMAT_A8B8G8R8_UNORM;

+   case PIPE_FORMAT_X8B8G8R8_SRGB:

+      return PIPE_FORMAT_X8B8G8R8_UNORM;

+   case PIPE_FORMAT_B8G8R8A8_SRGB:

+      return PIPE_FORMAT_B8G8R8A8_UNORM;

+   case PIPE_FORMAT_B8G8R8X8_SRGB:

+      return PIPE_FORMAT_B8G8R8X8_UNORM;

+   case PIPE_FORMAT_A8R8G8B8_SRGB:

+      return PIPE_FORMAT_A8R8G8B8_UNORM;

+   case PIPE_FORMAT_X8R8G8B8_SRGB:

+      return PIPE_FORMAT_X8R8G8B8_UNORM;

+   case PIPE_FORMAT_DXT1_SRGB:

+      return PIPE_FORMAT_DXT1_RGB;

+   case PIPE_FORMAT_DXT1_SRGBA:

+      return PIPE_FORMAT_DXT1_RGBA;

+   case PIPE_FORMAT_DXT3_SRGBA:

+      return PIPE_FORMAT_DXT3_RGBA;

+   case PIPE_FORMAT_DXT5_SRGBA:

+      return PIPE_FORMAT_DXT5_RGBA;

+   default:

+      return 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.

+ */

+

+void

+util_format_read_4f(enum pipe_format format,

+                    float *dst, unsigned dst_stride, 

+                    const void *src, unsigned src_stride, 

+                    unsigned x, unsigned y, unsigned w, unsigned h);

+

+void

+util_format_write_4f(enum pipe_format format,

+                     const float *src, unsigned src_stride, 

+                     void *dst, unsigned dst_stride, 

+                     unsigned x, unsigned y, unsigned w, unsigned h);

+

+void

+util_format_read_4ub(enum pipe_format format,

+                     uint8_t *dst, unsigned dst_stride, 

+                     const void *src, unsigned src_stride, 

+                     unsigned x, unsigned y, unsigned w, unsigned h);

+

+void

+util_format_write_4ub(enum pipe_format format,

+                      const uint8_t *src, unsigned src_stride, 

+                      void *dst, unsigned dst_stride, 

+                      unsigned x, unsigned y, unsigned w, unsigned h);

+

+/*

+ * Generic format conversion;

+ */

+

+boolean

+util_format_fits_8unorm(const struct util_format_description *format_desc);

+

+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

+

+#endif /* ! U_FORMAT_H */