mesa: Use _mesa_format_convert to implement texstore_rgba.

Notice that _mesa_format_convert does not handle byte-swapping scenarios,
GL_COLOR_INDEX or MESA_FORMAT_YCBCR(_REV), so these must be handled
separately.

Also, remove all the code that goes unused after using _mesa_format_convert.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

1 files changed, 70 insertions, 613 deletions

diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index dc10797629a..42088bbb59a 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -221,116 +221,6 @@ _mesa_make_temp_float_image(struct gl_context *ctx, GLuint dims,
 
 
 /**
- * Make temporary image with uint pixel values.  Used for unsigned
- * integer-valued textures.
- */
-static GLuint *
-make_temp_uint_image(struct gl_context *ctx, GLuint dims,
-                     GLenum logicalBaseFormat,
-                     GLenum textureBaseFormat,
-                     GLint srcWidth, GLint srcHeight, GLint srcDepth,
-                     GLenum srcFormat, GLenum srcType,
-                     const GLvoid *srcAddr,
-                     const struct gl_pixelstore_attrib *srcPacking)
-{
-   GLuint *tempImage;
-   const GLint components = _mesa_components_in_format(logicalBaseFormat);
-   const GLint srcStride =
-      _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
-   GLuint *dst;
-   GLint img, row;
-
-   ASSERT(dims >= 1 && dims <= 3);
-
-   ASSERT(logicalBaseFormat == GL_RGBA ||
-          logicalBaseFormat == GL_RGB ||
-          logicalBaseFormat == GL_RG ||
-          logicalBaseFormat == GL_RED ||
-          logicalBaseFormat == GL_LUMINANCE_ALPHA ||
-          logicalBaseFormat == GL_LUMINANCE ||
-          logicalBaseFormat == GL_INTENSITY ||
-          logicalBaseFormat == GL_ALPHA);
-
-   ASSERT(textureBaseFormat == GL_RGBA ||
-          textureBaseFormat == GL_RGB ||
-          textureBaseFormat == GL_RG ||
-          textureBaseFormat == GL_RED ||
-          textureBaseFormat == GL_LUMINANCE_ALPHA ||
-          textureBaseFormat == GL_LUMINANCE ||
-          textureBaseFormat == GL_INTENSITY ||
-          textureBaseFormat == GL_ALPHA);
-
-   tempImage = malloc(srcWidth * srcHeight * srcDepth
-                                 * components * sizeof(GLuint));
-   if (!tempImage)
-      return NULL;
-
-   dst = tempImage;
-   for (img = 0; img < srcDepth; img++) {
-      const GLubyte *src
-	 = (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr,
-						 srcWidth, srcHeight,
-						 srcFormat, srcType,
-						 img, 0, 0);
-      for (row = 0; row < srcHeight; row++) {
-	 _mesa_unpack_color_span_uint(ctx, srcWidth, logicalBaseFormat,
-                                      dst, srcFormat, srcType, src,
-                                      srcPacking);
-	 dst += srcWidth * components;
-	 src += srcStride;
-      }
-   }
-
-   if (logicalBaseFormat != textureBaseFormat) {
-      /* more work */
-      GLint texComponents = _mesa_components_in_format(textureBaseFormat);
-      GLint logComponents = _mesa_components_in_format(logicalBaseFormat);
-      GLuint *newImage;
-      GLint i, n;
-      GLubyte map[6];
-
-      /* we only promote up to RGB, RGBA and LUMINANCE_ALPHA formats for now */
-      ASSERT(textureBaseFormat == GL_RGB || textureBaseFormat == GL_RGBA ||
-             textureBaseFormat == GL_LUMINANCE_ALPHA);
-
-      /* The actual texture format should have at least as many components
-       * as the logical texture format.
-       */
-      ASSERT(texComponents >= logComponents);
-
-      newImage = malloc(srcWidth * srcHeight * srcDepth
-                                   * texComponents * sizeof(GLuint));
-      if (!newImage) {
-         free(tempImage);
-         return NULL;
-      }
-
-      _mesa_compute_component_mapping(logicalBaseFormat, textureBaseFormat, map);
-
-      n = srcWidth * srcHeight * srcDepth;
-      for (i = 0; i < n; i++) {
-         GLint k;
-         for (k = 0; k < texComponents; k++) {
-            GLint j = map[k];
-            if (j == ZERO)
-               newImage[i * texComponents + k] = 0;
-            else if (j == ONE)
-               newImage[i * texComponents + k] = 1;
-            else
-               newImage[i * texComponents + k] = tempImage[i * logComponents + j];
-         }
-      }
-
-      free(tempImage);
-      tempImage = newImage;
-   }
-
-   return tempImage;
-}
-
-
-
-/**
  * Make a temporary (color) texture image with GLubyte components.
  * Apply all needed pixel unpacking and pixel transfer operations.
  * Note that there are both logicalBaseFormat and textureBaseFormat parameters.
@@ -518,46 +408,6 @@ memcpy_texture(struct gl_context *ctx,
 
 
 /**
- * General-case function for storing a color texture images with
- * components that can be represented with ubytes.  Example destination
- * texture formats are MESA_FORMAT_ARGB888, ARGB4444, RGB565.
- */
-static GLboolean
-store_ubyte_texture(TEXSTORE_PARAMS)
-{
-   const GLint srcRowStride = srcWidth * 4 * sizeof(GLubyte);
-   GLubyte *tempImage, *src;
-   GLint img;
-
-   tempImage = _mesa_make_temp_ubyte_image(ctx, dims,
-                                           baseInternalFormat,
-                                           GL_RGBA,
-                                           srcWidth, srcHeight, srcDepth,
-                                           srcFormat, srcType, srcAddr,
-                                           srcPacking);
-   if (!tempImage)
-      return GL_FALSE;
-
-   /* This way we will use the RGB versions of the packing functions and it
-    * will work for both RGB and sRGB textures*/
-   dstFormat = _mesa_get_srgb_format_linear(dstFormat);
-
-   src = tempImage;
-   for (img = 0; img < srcDepth; img++) {
-      _mesa_pack_ubyte_rgba_rect(dstFormat, srcWidth, srcHeight,
-                                 src, srcRowStride,
-                                 dstSlices[img], dstRowStride);
-      src += srcHeight * srcRowStride;
-   }
-   free(tempImage);
-
-   return GL_TRUE;
-}
-
-
-
-
-/**
  * Store a 32-bit integer or float depth component texture image.
  */
 static GLboolean
@@ -690,56 +540,6 @@ _mesa_texstore_z16(TEXSTORE_PARAMS)
 
 
 /**
- * Store an rgb565 or rgb565_rev texture image.
- */
-static GLboolean
-_mesa_texstore_rgb565(TEXSTORE_PARAMS)
-{
-   ASSERT(dstFormat == MESA_FORMAT_B5G6R5_UNORM ||
-          dstFormat == MESA_FORMAT_R5G6B5_UNORM);
-   ASSERT(_mesa_get_format_bytes(dstFormat) == 2);
-
-   if (!ctx->_ImageTransferState &&
-       !srcPacking->SwapBytes &&
-       baseInternalFormat == GL_RGB &&
-       srcFormat == GL_RGB &&
-       srcType == GL_UNSIGNED_BYTE &&
-       dims == 2) {
-      /* do optimized tex store */
-      const GLint srcRowStride =
-         _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
-      const GLubyte *src = (const GLubyte *)
-         _mesa_image_address(dims, srcPacking, srcAddr, srcWidth, srcHeight,
-                             srcFormat, srcType, 0, 0, 0);
-      GLubyte *dst = dstSlices[0];
-      GLint row, col;
-      for (row = 0; row < srcHeight; row++) {
-         const GLubyte *srcUB = (const GLubyte *) src;
-         GLushort *dstUS = (GLushort *) dst;
-         /* check for byteswapped format */
-         if (dstFormat == MESA_FORMAT_B5G6R5_UNORM) {
-            for (col = 0; col < srcWidth; col++) {
-               dstUS[col] = PACK_COLOR_565( srcUB[0], srcUB[1], srcUB[2] );
-               srcUB += 3;
-            }
-         }
-         else {
-            for (col = 0; col < srcWidth; col++) {
-               dstUS[col] = PACK_COLOR_565( srcUB[2], srcUB[1], srcUB[0] );
-               srcUB += 3;
-            }
-         }
-         dst += dstRowStride;
-         src += srcRowStride;
-      }
-      return GL_TRUE;
-   } else {
-      return GL_FALSE;
-   }
-}
-
-
-/**
  * Texstore for _mesa_texformat_ycbcr or _mesa_texformat_ycbcr_REV.
  */
 static GLboolean
@@ -1047,119 +847,6 @@ _mesa_texstore_z32f_x24s8(TEXSTORE_PARAMS)
 }
 
 static GLboolean
-_mesa_texstore_argb2101010_uint(TEXSTORE_PARAMS)
-{
-   const GLenum baseFormat = _mesa_get_format_base_format(dstFormat);
-
-   ASSERT(dstFormat == MESA_FORMAT_B10G10R10A2_UINT);
-   ASSERT(_mesa_get_format_bytes(dstFormat) == 4);
-
-   {
-      /* general path */
-      const GLuint *tempImage = make_temp_uint_image(ctx, dims,
-                                                     baseInternalFormat,
-                                                     baseFormat,
-                                                     srcWidth, srcHeight,
-                                                     srcDepth, srcFormat,
-                                                     srcType, srcAddr,
-                                                     srcPacking);
-      const GLuint *src = tempImage;
-      GLint img, row, col;
-      GLboolean is_unsigned = _mesa_is_type_unsigned(srcType);
-      if (!tempImage)
-         return GL_FALSE;
-      for (img = 0; img < srcDepth; img++) {
-         GLubyte *dstRow = dstSlices[img];
-
-         for (row = 0; row < srcHeight; row++) {
-            GLuint *dstUI = (GLuint *) dstRow;
-            if (is_unsigned) {
-               for (col = 0; col < srcWidth; col++) {
-                  GLushort a,r,g,b;
-                  r = MIN2(src[RCOMP], 0x3ff);
-                  g = MIN2(src[GCOMP], 0x3ff);
-                  b = MIN2(src[BCOMP], 0x3ff);
-                  a = MIN2(src[ACOMP], 0x003);
-                  dstUI[col] = (a << 30) | (r << 20) | (g << 10) | (b);
-                  src += 4;
-               }
-            } else {
-               for (col = 0; col < srcWidth; col++) {
-                  GLushort a,r,g,b;
-                  r = CLAMP((GLint) src[RCOMP], 0, 0x3ff);
-                  g = CLAMP((GLint) src[GCOMP], 0, 0x3ff);
-                  b = CLAMP((GLint) src[BCOMP], 0, 0x3ff);
-                  a = CLAMP((GLint) src[ACOMP], 0, 0x003);
-                  dstUI[col] = (a << 30) | (r << 20) | (g << 10) | (b);
-                  src += 4;
-               }
-            }
-            dstRow += dstRowStride;
-         }
-      }
-      free((void *) tempImage);
-   }
-   return GL_TRUE;
-}
-
-static GLboolean
-_mesa_texstore_abgr2101010_uint(TEXSTORE_PARAMS)
-{
-   const GLenum baseFormat = _mesa_get_format_base_format(dstFormat);
-
-   ASSERT(dstFormat == MESA_FORMAT_R10G10B10A2_UINT);
-   ASSERT(_mesa_get_format_bytes(dstFormat) == 4);
-
-   {
-      /* general path */
-      const GLuint *tempImage = make_temp_uint_image(ctx, dims,
-                                                     baseInternalFormat,
-                                                     baseFormat,
-                                                     srcWidth, srcHeight,
-                                                     srcDepth, srcFormat,
-                                                     srcType, srcAddr,
-                                                     srcPacking);
-      const GLuint *src = tempImage;
-      GLint img, row, col;
-      GLboolean is_unsigned = _mesa_is_type_unsigned(srcType);
-      if (!tempImage)
-         return GL_FALSE;
-      for (img = 0; img < srcDepth; img++) {
-         GLubyte *dstRow = dstSlices[img];
-
-         for (row = 0; row < srcHeight; row++) {
-            GLuint *dstUI = (GLuint *) dstRow;
-            if (is_unsigned) {
-               for (col = 0; col < srcWidth; col++) {
-                  GLushort a,r,g,b;
-                  r = MIN2(src[RCOMP], 0x3ff);
-                  g = MIN2(src[GCOMP], 0x3ff);
-                  b = MIN2(src[BCOMP], 0x3ff);
-                  a = MIN2(src[ACOMP], 0x003);
-                  dstUI[col] = (a << 30) | (b << 20) | (g << 10) | (r);
-                  src += 4;
-               }
-            } else {
-               for (col = 0; col < srcWidth; col++) {
-                  GLushort a,r,g,b;
-                  r = CLAMP((GLint) src[RCOMP], 0, 0x3ff);
-                  g = CLAMP((GLint) src[GCOMP], 0, 0x3ff);
-                  b = CLAMP((GLint) src[BCOMP], 0, 0x3ff);
-                  a = CLAMP((GLint) src[ACOMP], 0, 0x003);
-                  dstUI[col] = (a << 30) | (b << 20) | (g << 10) | (r);
-                  src += 4;
-               }
-            }
-            dstRow += dstRowStride;
-         }
-      }
-      free((void *) tempImage);
-   }
-   return GL_TRUE;
-}
-
-
-static GLboolean
 texstore_depth_stencil(TEXSTORE_PARAMS)
 {
    static StoreTexImageFunc table[MESA_FORMAT_COUNT];
@@ -1248,329 +935,99 @@ texstore_compressed(TEXSTORE_PARAMS)
                            srcFormat, srcType, srcAddr, srcPacking);
 }
 
-static void
-invert_swizzle(uint8_t dst[4], const uint8_t src[4])
-{
-   int i, j;
-
-   dst[0] = MESA_FORMAT_SWIZZLE_NONE;
-   dst[1] = MESA_FORMAT_SWIZZLE_NONE;
-   dst[2] = MESA_FORMAT_SWIZZLE_NONE;
-   dst[3] = MESA_FORMAT_SWIZZLE_NONE;
-
-   for (i = 0; i < 4; ++i)
-      for (j = 0; j < 4; ++j)
-         if (src[j] == i && dst[i] == MESA_FORMAT_SWIZZLE_NONE)
-            dst[i] = j;
-}
-
-/** Store a texture by per-channel conversions and swizzling.
- *
- * This function attempts to perform a texstore operation by doing simple
- * per-channel conversions and swizzling.  This covers a huge chunk of the
- * texture storage operations that anyone cares about.  If this function is
- * incapable of performing the operation, it bails and returns GL_FALSE.
- */
 static GLboolean
-texstore_swizzle(TEXSTORE_PARAMS)
+texstore_rgba(TEXSTORE_PARAMS)
 {
-   const GLint srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth,
-                                                     srcFormat, srcType);
-   const GLint srcImageStride = _mesa_image_image_stride(srcPacking,
-                                      srcWidth, srcHeight, srcFormat, srcType);
-   const GLubyte *srcImage = (const GLubyte *) _mesa_image_address(dims,
-        srcPacking, srcAddr, srcWidth, srcHeight, srcFormat, srcType, 0, 0, 0);
-   const int src_components = _mesa_components_in_format(srcFormat);
-
-   GLubyte swizzle[4], rgba2base[6], base2src[6], rgba2dst[4], dst2rgba[4];
-   const GLubyte *swap;
-   GLenum dst_type;
-   int dst_components;
-   bool is_array, normalized, need_swap;
-   GLint i, img, row;
-   const GLubyte *src_row;
-   GLubyte *dst_row;
-
-   is_array = _mesa_format_to_array(dstFormat, &dst_type, &dst_components,
-                                    rgba2dst, &normalized);
-
-   if (!is_array)
-      return GL_FALSE;
-
-   if (srcFormat == GL_COLOR_INDEX)
-      return GL_FALSE;
-
-   if (_mesa_texstore_needs_transfer_ops(ctx, baseInternalFormat, dstFormat))
-      return GL_FALSE;
-
-   switch (srcType) {
-   case GL_FLOAT:
-   case GL_UNSIGNED_BYTE:
-   case GL_BYTE:
-   case GL_UNSIGNED_SHORT:
-   case GL_SHORT:
-   case GL_UNSIGNED_INT:
-   case GL_INT:
-      /* If wa have to swap bytes in a multi-byte datatype, that means
-       * we're not doing an array conversion anymore */
-      if (srcPacking->SwapBytes)
-         return GL_FALSE;
-      need_swap = false;
-      break;
-   case GL_UNSIGNED_INT_8_8_8_8:
-      need_swap = srcPacking->SwapBytes;
-      if (_mesa_little_endian())
-         need_swap = !need_swap;
-      srcType = GL_UNSIGNED_BYTE;
-      break;
-   case GL_UNSIGNED_INT_8_8_8_8_REV:
-      need_swap = srcPacking->SwapBytes;
-      if (!_mesa_little_endian())
-         need_swap = !need_swap;
-      srcType = GL_UNSIGNED_BYTE;
-      break;
-   default:
-      return GL_FALSE;
-   }
-   swap = need_swap ? map_3210 : map_identity;
-
-   _mesa_compute_component_mapping(srcFormat, baseInternalFormat, base2src);
-   _mesa_compute_component_mapping(baseInternalFormat, GL_RGBA, rgba2base);
-   invert_swizzle(dst2rgba, rgba2dst);
-
-   for (i = 0; i < 4; i++) {
-      if (dst2rgba[i] == MESA_FORMAT_SWIZZLE_NONE)
-         swizzle[i] = MESA_FORMAT_SWIZZLE_NONE;
-      else
-         swizzle[i] = swap[base2src[rgba2base[dst2rgba[i]]]];
-   }
-
-   /* Is it normalized? */
-   normalized |= !_mesa_is_enum_format_integer(srcFormat);
-
-   for (img = 0; img < srcDepth; img++) {
-      if (dstRowStride == srcWidth * dst_components &&
-          srcRowStride == srcWidth * src_components) {
-         _mesa_swizzle_and_convert(dstSlices[img], dst_type, dst_components,
-                                   srcImage, srcType, src_components,
-                                   swizzle, normalized, srcWidth * srcHeight);
-      } else {
-         src_row = srcImage;
-         dst_row = dstSlices[img];
-         for (row = 0; row < srcHeight; row++) {
-            _mesa_swizzle_and_convert(dst_row, dst_type, dst_components,
-                                      src_row, srcType, src_components,
-                                      swizzle, normalized, srcWidth);
-            dst_row += dstRowStride;
-            src_row += srcRowStride;
-         }
-      }
-      srcImage += srcImageStride;
+   void *tempImage = NULL;
+   int srcRowStride, img;
+   GLubyte *src;
+   uint32_t srcMesaFormat;
+   uint8_t rebaseSwizzle[4];
+   bool needRebase;
+
+   /* We have to handle MESA_FORMAT_YCBCR manually because it is a special case
+    * and _mesa_format_convert does not support it. In this case the we only
+    * allow conversions between YCBCR formats and it is mostly a memcpy.
+    */
+   if (dstFormat == MESA_FORMAT_YCBCR || dstFormat == MESA_FORMAT_YCBCR_REV) {
+      return _mesa_texstore_ycbcr(ctx, dims, baseInternalFormat,
+                                  dstFormat, dstRowStride, dstSlices,
+                                  srcWidth, srcHeight, srcDepth,
+                                  srcFormat, srcType, srcAddr,
+                                  srcPacking);
    }
 
-   return GL_TRUE;
-}
-
-
-/** Stores a texture by converting float and then to the texture format
- *
- * This function performs a texstore operation by converting to float,
- * applying pixel transfer ops, and then converting to the texture's
- * internal format using pixel store functions.  This function will work
- * for any rgb or srgb textore format.
- */
-static GLboolean
-texstore_via_float(TEXSTORE_PARAMS)
-{
-   GLuint i, img, row;
-   const GLint src_stride =
-      _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
-   float *tmp_row;
-   bool need_convert;
-   uint8_t *src_row, *dst_row, map[4], rgba2base[6], base2rgba[6];
-
-   tmp_row = malloc(srcWidth * 4 * sizeof(*tmp_row));
-   if (!tmp_row)
-      return GL_FALSE;
-
-   /* The GL spec (4.0, compatibility profile) only specifies srgb
-    * conversion as something that is done in the sampler during the
-    * filtering process before the colors are handed to the shader.
-    * Furthermore, the flowchart (Figure 3.7 in the 4.0 compatibility spec)
-    * does not list RGB <-> sRGB conversions anywhere.  Therefore, we just
-    * treat sRGB formats the same as RGB formats for the purposes of
-    * texture upload and transfer ops.
+   /* We have to deal with GL_COLOR_INDEX manually because
+    * _mesa_format_convert does not handle this format. So what we do here is
+    * convert it to RGBA ubyte first and then convert from that to dst as usual.
     */
-   dstFormat = _mesa_get_srgb_format_linear(dstFormat);
-
-   need_convert = false;
-   if (baseInternalFormat != _mesa_get_format_base_format(dstFormat)) {
-      _mesa_compute_component_mapping(GL_RGBA, baseInternalFormat, base2rgba);
-      _mesa_compute_component_mapping(baseInternalFormat, GL_RGBA, rgba2base);
-      for (i = 0; i < 4; ++i) {
-         map[i] = base2rgba[rgba2base[i]];
-         if (map[i] != i)
-            need_convert = true;
-      }
-   }
+   if (srcFormat == GL_COLOR_INDEX) {
+      /* Notice that this will already handle byte swapping if necessary */
+      tempImage  = _mesa_make_temp_ubyte_image(ctx, dims,
+                                               baseInternalFormat,
+                                               GL_RGBA,
+                                               srcWidth, srcHeight, srcDepth,
+                                               srcFormat, srcType, srcAddr,
+                                               srcPacking);
+      if (!tempImage)
+         return GL_FALSE;
 
-   for (img = 0; img < srcDepth; img++) {
-      dst_row = dstSlices[img];
-      src_row = _mesa_image_address(dims, srcPacking, srcAddr,
-                                    srcWidth, srcHeight,
-                                    srcFormat, srcType,
-                                    img, 0, 0);
-      for (row = 0; row < srcHeight; row++) {
-	 _mesa_unpack_color_span_float(ctx, srcWidth, GL_RGBA, tmp_row,
-                                       srcFormat, srcType, src_row,
-				       srcPacking, ctx->_ImageTransferState);
-         if (need_convert)
-            _mesa_swizzle_and_convert(tmp_row, GL_FLOAT, 4,
-                                      tmp_row, GL_FLOAT, 4,
-                                      map, false, srcWidth);
-         _mesa_pack_float_rgba_row(dstFormat, srcWidth,
-                                   (const GLfloat (*)[4])tmp_row,
-                                   dst_row);
-         dst_row += dstRowStride;
-         src_row += src_stride;
+      /* Now we only have to adjust our src info for a conversion from
+       * the RGBA ubyte and then we continue as usual.
+       */
+      srcAddr = tempImage;
+      srcFormat = GL_RGBA;
+      srcType = GL_UNSIGNED_BYTE;
+   } else if (srcPacking->SwapBytes) {
+      /* We have to handle byte-swapping scenarios before calling
+       * _mesa_format_convert
+       */
+      GLint swapSize = _mesa_sizeof_packed_type(srcType);
+      if (swapSize == 2 || swapSize == 4) {
+         int components = _mesa_components_in_format(srcFormat);
+         int elementCount = srcWidth * srcHeight * components;
+         tempImage = malloc(elementCount * swapSize);
+         if (!tempImage)
+            return GL_FALSE;
+         if (swapSize == 2)
+            _mesa_swap2_copy(tempImage, (GLushort *) srcAddr, elementCount);
+         else
+            _mesa_swap4_copy(tempImage, (GLuint *) srcAddr, elementCount);
+         srcAddr = tempImage;
       }
    }
 
-   free(tmp_row);
-
-   return GL_TRUE;
-}
-
-/** Stores an integer rgba texture
- *
- * This function performs an integer texture storage operation by unpacking
- * the texture to 32-bit integers, and repacking it into the internal
- * format of the texture.  This will work for any integer rgb texture
- * storage operation.
- */
-static GLboolean
-texstore_rgba_integer(TEXSTORE_PARAMS)
-{
-   GLuint i, img, row, *tmp_row;
-   GLenum dst_type, tmp_type;
-   const GLint src_stride =
+   srcRowStride =
       _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
-   int num_dst_components;
-   bool is_array, normalized;
-   uint8_t *src_row, *dst_row;
-   uint8_t swizzle[4], rgba2base[6], base2rgba[6], rgba2dst[4], dst2rgba[4];
-
-   tmp_row = malloc(srcWidth * 4 * sizeof(*tmp_row));
-   if (!tmp_row)
-      return GL_FALSE;
-
-   is_array = _mesa_format_to_array(dstFormat, &dst_type, &num_dst_components,
-                                    rgba2dst, &normalized);
-
-   assert(is_array && !normalized);
 
-   if (!is_array) {
-      free(tmp_row);
-      return GL_FALSE;
-   }
-
-   invert_swizzle(dst2rgba, rgba2dst);
-   _mesa_compute_component_mapping(GL_RGBA, baseInternalFormat, base2rgba);
-   _mesa_compute_component_mapping(baseInternalFormat, GL_RGBA, rgba2base);
+   src = (GLubyte *)
+      _mesa_image_address(dims, srcPacking, srcAddr, srcWidth, srcHeight,
+                          srcFormat, srcType, 0, 0, 0);
 
-   for (i = 0; i < 4; ++i) {
-      if (dst2rgba[i] == MESA_FORMAT_SWIZZLE_NONE)
-         swizzle[i] = MESA_FORMAT_SWIZZLE_NONE;
-      else
-         swizzle[i] = base2rgba[rgba2base[dst2rgba[i]]];
-   }
+   srcMesaFormat = _mesa_format_from_format_and_type(srcFormat, srcType);
+   dstFormat = _mesa_get_srgb_format_linear(dstFormat);
 
-   if (_mesa_is_type_unsigned(srcType)) {
-      tmp_type = GL_UNSIGNED_INT;
+   if (_mesa_get_format_base_format(dstFormat) != baseInternalFormat) {
+      needRebase =
+         _mesa_compute_rgba2base2rgba_component_mapping(baseInternalFormat,
+                                                        rebaseSwizzle);
    } else {
-      tmp_type = GL_INT;
+      needRebase = false;
    }
 
    for (img = 0; img < srcDepth; img++) {
-      dst_row = dstSlices[img];
-      src_row = _mesa_image_address(dims, srcPacking, srcAddr,
-                                    srcWidth, srcHeight,
-                                    srcFormat, srcType,
-                                    img, 0, 0);
-      for (row = 0; row < srcHeight; row++) {
-	 _mesa_unpack_color_span_uint(ctx, srcWidth, GL_RGBA, tmp_row,
-                                      srcFormat, srcType, src_row, srcPacking);
-         _mesa_swizzle_and_convert(dst_row, dst_type, num_dst_components,
-                                   tmp_row, tmp_type, 4,
-                                   swizzle, false, srcWidth);
-         dst_row += dstRowStride;
-         src_row += src_stride;
-      }
+      _mesa_format_convert(dstSlices[img], dstFormat, dstRowStride,
+                           src, srcMesaFormat, srcRowStride,
+                           srcWidth, srcHeight,
+                           needRebase ? rebaseSwizzle : NULL);
+      src += srcHeight * srcRowStride;
    }
 
-   free(tmp_row);
+   free(tempImage);
 
    return GL_TRUE;
 }
 
-static GLboolean
-texstore_rgba(TEXSTORE_PARAMS)
-{
-   static StoreTexImageFunc table[MESA_FORMAT_COUNT];
-   static GLboolean initialized = GL_FALSE;
-
-   if (!initialized) {
-      memset(table, 0, sizeof table);
-
-      table[MESA_FORMAT_B5G6R5_UNORM] = _mesa_texstore_rgb565;
-      table[MESA_FORMAT_R5G6B5_UNORM] = _mesa_texstore_rgb565;
-      table[MESA_FORMAT_YCBCR] = _mesa_texstore_ycbcr;
-      table[MESA_FORMAT_YCBCR_REV] = _mesa_texstore_ycbcr;
-
-      table[MESA_FORMAT_B10G10R10A2_UINT] = _mesa_texstore_argb2101010_uint;
-      table[MESA_FORMAT_R10G10B10A2_UINT] = _mesa_texstore_abgr2101010_uint;
-
-      initialized = GL_TRUE;
-   }
-
-   if (table[dstFormat] && table[dstFormat](ctx, dims, baseInternalFormat,
-                                            dstFormat, dstRowStride, dstSlices,
-                                            srcWidth, srcHeight, srcDepth,
-                                            srcFormat, srcType, srcAddr,
-                                            srcPacking)) {
-      return GL_TRUE;
-   }
-
-   if (texstore_swizzle(ctx, dims, baseInternalFormat,
-                        dstFormat,
-                        dstRowStride, dstSlices,
-                        srcWidth, srcHeight, srcDepth,
-                        srcFormat, srcType, srcAddr, srcPacking)) {
-      return GL_TRUE;
-   }
-
-   if (_mesa_is_format_integer(dstFormat)) {
-      return texstore_rgba_integer(ctx, dims, baseInternalFormat,
-                                   dstFormat, dstRowStride, dstSlices,
-                                   srcWidth, srcHeight, srcDepth,
-                                   srcFormat, srcType, srcAddr,
-                                   srcPacking);
-   } else if (_mesa_get_format_max_bits(dstFormat) <= 8 &&
-              !_mesa_is_format_signed(dstFormat)) {
-      return store_ubyte_texture(ctx, dims, baseInternalFormat,
-                                 dstFormat,
-                                 dstRowStride, dstSlices,
-                                 srcWidth, srcHeight, srcDepth,
-                                 srcFormat, srcType, srcAddr, srcPacking);
-   } else {
-      return texstore_via_float(ctx, dims, baseInternalFormat,
-                                dstFormat, dstRowStride, dstSlices,
-                                srcWidth, srcHeight, srcDepth,
-                                srcFormat, srcType, srcAddr,
-                                srcPacking);
-   }
-}
-
 GLboolean
 _mesa_texstore_needs_transfer_ops(struct gl_context *ctx,
                                   GLenum baseInternalFormat,