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-rw-r--r--mesalib/src/mesa/state_tracker/st_texture.c816
1 files changed, 418 insertions, 398 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_texture.c b/mesalib/src/mesa/state_tracker/st_texture.c
index 22ec1306c..0e857fddc 100644
--- a/mesalib/src/mesa/state_tracker/st_texture.c
+++ b/mesalib/src/mesa/state_tracker/st_texture.c
@@ -1,398 +1,418 @@
-/**************************************************************************
- *
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
- * 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 TUNGSTEN GRAPHICS 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.
- *
- **************************************************************************/
-
-#include <stdio.h>
-
-#include "st_context.h"
-#include "st_format.h"
-#include "st_texture.h"
-#include "st_cb_fbo.h"
-#include "main/enums.h"
-
-#include "pipe/p_state.h"
-#include "pipe/p_context.h"
-#include "pipe/p_defines.h"
-#include "util/u_inlines.h"
-#include "util/u_format.h"
-#include "util/u_rect.h"
-#include "util/u_math.h"
-
-
-#define DBG if(0) printf
-
-
-/**
- * Allocate a new pipe_resource object
- * width0, height0, depth0 are the dimensions of the level 0 image
- * (the highest resolution). last_level indicates how many mipmap levels
- * to allocate storage for. For non-mipmapped textures, this will be zero.
- */
-struct pipe_resource *
-st_texture_create(struct st_context *st,
- enum pipe_texture_target target,
- enum pipe_format format,
- GLuint last_level,
- GLuint width0,
- GLuint height0,
- GLuint depth0,
- GLuint layers,
- GLuint bind )
-{
- struct pipe_resource pt, *newtex;
- struct pipe_screen *screen = st->pipe->screen;
-
- assert(target < PIPE_MAX_TEXTURE_TYPES);
- assert(width0 > 0);
- assert(height0 > 0);
- assert(depth0 > 0);
- if (target == PIPE_TEXTURE_CUBE)
- assert(layers == 6);
-
- DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
- _mesa_lookup_enum_by_nr(target),
- _mesa_lookup_enum_by_nr(format), last_level);
-
- assert(format);
- assert(screen->is_format_supported(screen, format, target, 0,
- PIPE_BIND_SAMPLER_VIEW));
-
- memset(&pt, 0, sizeof(pt));
- pt.target = target;
- pt.format = format;
- pt.last_level = last_level;
- pt.width0 = width0;
- pt.height0 = height0;
- pt.depth0 = depth0;
- pt.array_size = (target == PIPE_TEXTURE_CUBE ? 6 : layers);
- pt.usage = PIPE_USAGE_DEFAULT;
- pt.bind = bind;
- pt.flags = 0;
-
- newtex = screen->resource_create(screen, &pt);
-
- assert(!newtex || pipe_is_referenced(&newtex->reference));
-
- return newtex;
-}
-
-
-/**
- * In OpenGL the number of 1D array texture layers is the "height" and
- * the number of 2D array texture layers is the "depth". In Gallium the
- * number of layers in an array texture is a separate 'array_size' field.
- * This function converts dimensions from the former to the later.
- */
-void
-st_gl_texture_dims_to_pipe_dims(GLenum texture,
- GLuint widthIn,
- GLuint heightIn,
- GLuint depthIn,
- GLuint *widthOut,
- GLuint *heightOut,
- GLuint *depthOut,
- GLuint *layersOut)
-{
- switch (texture) {
- case GL_TEXTURE_1D:
- assert(heightIn == 1);
- assert(depthIn == 1);
- *widthOut = widthIn;
- *heightOut = 1;
- *depthOut = 1;
- *layersOut = 1;
- break;
- case GL_TEXTURE_1D_ARRAY:
- assert(depthIn == 1);
- *widthOut = widthIn;
- *heightOut = 1;
- *depthOut = 1;
- *layersOut = heightIn;
- break;
- case GL_TEXTURE_2D:
- case GL_TEXTURE_RECTANGLE:
- assert(depthIn == 1);
- *widthOut = widthIn;
- *heightOut = heightIn;
- *depthOut = 1;
- *layersOut = 1;
- break;
- case GL_TEXTURE_CUBE_MAP:
- assert(depthIn == 1);
- *widthOut = widthIn;
- *heightOut = heightIn;
- *depthOut = 1;
- *layersOut = 6;
- break;
- case GL_TEXTURE_2D_ARRAY:
- *widthOut = widthIn;
- *heightOut = heightIn;
- *depthOut = 1;
- *layersOut = depthIn;
- break;
- default:
- assert(0 && "Unexpected texture in st_gl_texture_dims_to_pipe_dims()");
- /* fall-through */
- case GL_TEXTURE_3D:
- *widthOut = widthIn;
- *heightOut = heightIn;
- *depthOut = depthIn;
- *layersOut = 1;
- break;
- }
-}
-
-
-/**
- * Check if a texture image can be pulled into a unified mipmap texture.
- */
-GLboolean
-st_texture_match_image(const struct pipe_resource *pt,
- const struct gl_texture_image *image,
- GLuint face, GLuint level)
-{
- GLuint ptWidth, ptHeight, ptDepth, ptLayers;
-
- /* Images with borders are never pulled into mipmap textures.
- */
- if (image->Border)
- return GL_FALSE;
-
- /* Check if this image's format matches the established texture's format.
- */
- if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
- return GL_FALSE;
-
- st_gl_texture_dims_to_pipe_dims(image->TexObject->Target,
- image->Width, image->Height, image->Depth,
- &ptWidth, &ptHeight, &ptDepth, &ptLayers);
-
- /* Test if this image's size matches what's expected in the
- * established texture.
- */
- if (ptWidth != u_minify(pt->width0, level) ||
- ptHeight != u_minify(pt->height0, level) ||
- ptDepth != u_minify(pt->depth0, level) ||
- ptLayers != pt->array_size)
- return GL_FALSE;
-
- return GL_TRUE;
-}
-
-
-/**
- * Map a texture image and return the address for a particular 2D face/slice/
- * layer. The stImage indicates the cube face and mipmap level. The slice
- * of the 3D texture is passed in 'zoffset'.
- * \param usage one of the PIPE_TRANSFER_x values
- * \param x, y, w, h the region of interest of the 2D image.
- * \return address of mapping or NULL if any error
- */
-GLubyte *
-st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
- GLuint zoffset, enum pipe_transfer_usage usage,
- GLuint x, GLuint y, GLuint w, GLuint h)
-{
- struct pipe_context *pipe = st->pipe;
- struct pipe_resource *pt = stImage->pt;
-
- DBG("%s \n", __FUNCTION__);
-
- stImage->transfer = pipe_get_transfer(st->pipe, pt, stImage->level,
- stImage->face + zoffset,
- usage, x, y, w, h);
-
- if (stImage->transfer)
- return pipe_transfer_map(pipe, stImage->transfer);
- else
- return NULL;
-}
-
-
-void
-st_texture_image_unmap(struct st_context *st,
- struct st_texture_image *stImage)
-{
- struct pipe_context *pipe = st->pipe;
-
- DBG("%s\n", __FUNCTION__);
-
- pipe_transfer_unmap(pipe, stImage->transfer);
-
- pipe->transfer_destroy(pipe, stImage->transfer);
-}
-
-
-
-/**
- * Upload data to a rectangular sub-region. Lots of choices how to do this:
- *
- * - memcpy by span to current destination
- * - upload data as new buffer and blit
- *
- * Currently always memcpy.
- */
-static void
-st_surface_data(struct pipe_context *pipe,
- struct pipe_transfer *dst,
- unsigned dstx, unsigned dsty,
- const void *src, unsigned src_stride,
- unsigned srcx, unsigned srcy, unsigned width, unsigned height)
-{
- void *map = pipe_transfer_map(pipe, dst);
-
- assert(dst->resource);
- util_copy_rect(map,
- dst->resource->format,
- dst->stride,
- dstx, dsty,
- width, height,
- src, src_stride,
- srcx, srcy);
-
- pipe_transfer_unmap(pipe, dst);
-}
-
-
-/* Upload data for a particular image.
- */
-void
-st_texture_image_data(struct st_context *st,
- struct pipe_resource *dst,
- GLuint face,
- GLuint level,
- void *src,
- GLuint src_row_stride, GLuint src_image_stride)
-{
- struct pipe_context *pipe = st->pipe;
- GLuint i;
- const GLubyte *srcUB = src;
- struct pipe_transfer *dst_transfer;
- GLuint layers;
-
- if (dst->target == PIPE_TEXTURE_1D_ARRAY ||
- dst->target == PIPE_TEXTURE_2D_ARRAY)
- layers = dst->array_size;
- else
- layers = u_minify(dst->depth0, level);
-
- DBG("%s\n", __FUNCTION__);
-
- for (i = 0; i < layers; i++) {
- dst_transfer = pipe_get_transfer(st->pipe, dst, level, face + i,
- PIPE_TRANSFER_WRITE, 0, 0,
- u_minify(dst->width0, level),
- u_minify(dst->height0, level));
-
- st_surface_data(pipe, dst_transfer,
- 0, 0, /* dstx, dsty */
- srcUB,
- src_row_stride,
- 0, 0, /* source x, y */
- u_minify(dst->width0, level),
- u_minify(dst->height0, level)); /* width, height */
-
- pipe->transfer_destroy(pipe, dst_transfer);
-
- srcUB += src_image_stride;
- }
-}
-
-
-/**
- * For debug only: get/print center pixel in the src resource.
- */
-static void
-print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
-{
- struct pipe_transfer *xfer;
- struct pipe_box region;
- ubyte *map;
-
- region.x = src->width0 / 2;
- region.y = src->height0 / 2;
- region.z = 0;
- region.width = 1;
- region.height = 1;
- region.depth = 1;
-
- xfer = pipe->get_transfer(pipe, src, 0, PIPE_TRANSFER_READ, &region);
- map = pipe->transfer_map(pipe, xfer);
-
- printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
-
- pipe->transfer_unmap(pipe, xfer);
- pipe->transfer_destroy(pipe, xfer);
-}
-
-
-/**
- * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
- * This is used to copy mipmap images from one texture buffer to another.
- * This typically happens when our initial guess at the total texture size
- * is incorrect (see the guess_and_alloc_texture() function).
- */
-void
-st_texture_image_copy(struct pipe_context *pipe,
- struct pipe_resource *dst, GLuint dstLevel,
- struct pipe_resource *src, GLuint srcLevel,
- GLuint face)
-{
- GLuint width = u_minify(dst->width0, dstLevel);
- GLuint height = u_minify(dst->height0, dstLevel);
- GLuint depth = u_minify(dst->depth0, dstLevel);
- struct pipe_box src_box;
- GLuint i;
-
- assert(u_minify(src->width0, srcLevel) == width);
- assert(u_minify(src->height0, srcLevel) == height);
- assert(u_minify(src->depth0, srcLevel) == depth);
-
- src_box.x = 0;
- src_box.y = 0;
- src_box.width = width;
- src_box.height = height;
- src_box.depth = 1;
- /* Loop over 3D image slices */
- /* could (and probably should) use "true" 3d box here -
- but drivers can't quite handle it yet */
- for (i = face; i < face + depth; i++) {
- src_box.z = i;
-
- if (0) {
- print_center_pixel(pipe, src);
- }
-
- pipe->resource_copy_region(pipe,
- dst,
- dstLevel,
- 0, 0, i,/* destX, Y, Z */
- src,
- srcLevel,
- &src_box);
- }
-}
-
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ *
+ **************************************************************************/
+
+#include <stdio.h>
+
+#include "st_context.h"
+#include "st_format.h"
+#include "st_texture.h"
+#include "st_cb_fbo.h"
+#include "main/enums.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_rect.h"
+#include "util/u_math.h"
+
+
+#define DBG if(0) printf
+
+
+/**
+ * Allocate a new pipe_resource object
+ * width0, height0, depth0 are the dimensions of the level 0 image
+ * (the highest resolution). last_level indicates how many mipmap levels
+ * to allocate storage for. For non-mipmapped textures, this will be zero.
+ */
+struct pipe_resource *
+st_texture_create(struct st_context *st,
+ enum pipe_texture_target target,
+ enum pipe_format format,
+ GLuint last_level,
+ GLuint width0,
+ GLuint height0,
+ GLuint depth0,
+ GLuint layers,
+ GLuint bind )
+{
+ struct pipe_resource pt, *newtex;
+ struct pipe_screen *screen = st->pipe->screen;
+
+ assert(target < PIPE_MAX_TEXTURE_TYPES);
+ assert(width0 > 0);
+ assert(height0 > 0);
+ assert(depth0 > 0);
+ if (target == PIPE_TEXTURE_CUBE)
+ assert(layers == 6);
+
+ DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
+ _mesa_lookup_enum_by_nr(target),
+ _mesa_lookup_enum_by_nr(format), last_level);
+
+ assert(format);
+ assert(screen->is_format_supported(screen, format, target, 0,
+ PIPE_BIND_SAMPLER_VIEW));
+
+ memset(&pt, 0, sizeof(pt));
+ pt.target = target;
+ pt.format = format;
+ pt.last_level = last_level;
+ pt.width0 = width0;
+ pt.height0 = height0;
+ pt.depth0 = depth0;
+ pt.array_size = (target == PIPE_TEXTURE_CUBE ? 6 : layers);
+ pt.usage = PIPE_USAGE_DEFAULT;
+ pt.bind = bind;
+ pt.flags = 0;
+
+ newtex = screen->resource_create(screen, &pt);
+
+ assert(!newtex || pipe_is_referenced(&newtex->reference));
+
+ return newtex;
+}
+
+
+/**
+ * In OpenGL the number of 1D array texture layers is the "height" and
+ * the number of 2D array texture layers is the "depth". In Gallium the
+ * number of layers in an array texture is a separate 'array_size' field.
+ * This function converts dimensions from the former to the later.
+ */
+void
+st_gl_texture_dims_to_pipe_dims(GLenum texture,
+ GLuint widthIn,
+ GLuint heightIn,
+ GLuint depthIn,
+ GLuint *widthOut,
+ GLuint *heightOut,
+ GLuint *depthOut,
+ GLuint *layersOut)
+{
+ switch (texture) {
+ case GL_TEXTURE_1D:
+ assert(heightIn == 1);
+ assert(depthIn == 1);
+ *widthOut = widthIn;
+ *heightOut = 1;
+ *depthOut = 1;
+ *layersOut = 1;
+ break;
+ case GL_TEXTURE_1D_ARRAY:
+ assert(depthIn == 1);
+ *widthOut = widthIn;
+ *heightOut = 1;
+ *depthOut = 1;
+ *layersOut = heightIn;
+ break;
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_RECTANGLE:
+ assert(depthIn == 1);
+ *widthOut = widthIn;
+ *heightOut = heightIn;
+ *depthOut = 1;
+ *layersOut = 1;
+ break;
+ case GL_TEXTURE_CUBE_MAP:
+ assert(depthIn == 1);
+ *widthOut = widthIn;
+ *heightOut = heightIn;
+ *depthOut = 1;
+ *layersOut = 6;
+ break;
+ case GL_TEXTURE_2D_ARRAY:
+ *widthOut = widthIn;
+ *heightOut = heightIn;
+ *depthOut = 1;
+ *layersOut = depthIn;
+ break;
+ default:
+ assert(0 && "Unexpected texture in st_gl_texture_dims_to_pipe_dims()");
+ /* fall-through */
+ case GL_TEXTURE_3D:
+ *widthOut = widthIn;
+ *heightOut = heightIn;
+ *depthOut = depthIn;
+ *layersOut = 1;
+ break;
+ }
+}
+
+
+/**
+ * Check if a texture image can be pulled into a unified mipmap texture.
+ */
+GLboolean
+st_texture_match_image(const struct pipe_resource *pt,
+ const struct gl_texture_image *image,
+ GLuint face, GLuint level)
+{
+ GLuint ptWidth, ptHeight, ptDepth, ptLayers;
+
+ /* Images with borders are never pulled into mipmap textures.
+ */
+ if (image->Border)
+ return GL_FALSE;
+
+ /* Check if this image's format matches the established texture's format.
+ */
+ if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
+ return GL_FALSE;
+
+ st_gl_texture_dims_to_pipe_dims(image->TexObject->Target,
+ image->Width, image->Height, image->Depth,
+ &ptWidth, &ptHeight, &ptDepth, &ptLayers);
+
+ /* Test if this image's size matches what's expected in the
+ * established texture.
+ */
+ if (ptWidth != u_minify(pt->width0, level) ||
+ ptHeight != u_minify(pt->height0, level) ||
+ ptDepth != u_minify(pt->depth0, level) ||
+ ptLayers != pt->array_size)
+ return GL_FALSE;
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Map a texture image and return the address for a particular 2D face/slice/
+ * layer. The stImage indicates the cube face and mipmap level. The slice
+ * of the 3D texture is passed in 'zoffset'.
+ * \param usage one of the PIPE_TRANSFER_x values
+ * \param x, y, w, h the region of interest of the 2D image.
+ * \return address of mapping or NULL if any error
+ */
+GLubyte *
+st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
+ GLuint zoffset, enum pipe_transfer_usage usage,
+ GLuint x, GLuint y, GLuint w, GLuint h)
+{
+ struct pipe_context *pipe = st->pipe;
+ struct pipe_resource *pt = stImage->pt;
+
+ DBG("%s \n", __FUNCTION__);
+
+ stImage->transfer = pipe_get_transfer(st->pipe, pt, stImage->level,
+ stImage->face + zoffset,
+ usage, x, y, w, h);
+
+ if (stImage->transfer)
+ return pipe_transfer_map(pipe, stImage->transfer);
+ else
+ return NULL;
+}
+
+
+void
+st_texture_image_unmap(struct st_context *st,
+ struct st_texture_image *stImage)
+{
+ struct pipe_context *pipe = st->pipe;
+
+ DBG("%s\n", __FUNCTION__);
+
+ pipe_transfer_unmap(pipe, stImage->transfer);
+
+ pipe->transfer_destroy(pipe, stImage->transfer);
+}
+
+
+
+/**
+ * Upload data to a rectangular sub-region. Lots of choices how to do this:
+ *
+ * - memcpy by span to current destination
+ * - upload data as new buffer and blit
+ *
+ * Currently always memcpy.
+ */
+static void
+st_surface_data(struct pipe_context *pipe,
+ struct pipe_transfer *dst,
+ unsigned dstx, unsigned dsty,
+ const void *src, unsigned src_stride,
+ unsigned srcx, unsigned srcy, unsigned width, unsigned height)
+{
+ void *map = pipe_transfer_map(pipe, dst);
+
+ assert(dst->resource);
+ util_copy_rect(map,
+ dst->resource->format,
+ dst->stride,
+ dstx, dsty,
+ width, height,
+ src, src_stride,
+ srcx, srcy);
+
+ pipe_transfer_unmap(pipe, dst);
+}
+
+
+/* Upload data for a particular image.
+ */
+void
+st_texture_image_data(struct st_context *st,
+ struct pipe_resource *dst,
+ GLuint face,
+ GLuint level,
+ void *src,
+ GLuint src_row_stride, GLuint src_image_stride)
+{
+ struct pipe_context *pipe = st->pipe;
+ GLuint i;
+ const GLubyte *srcUB = src;
+ struct pipe_transfer *dst_transfer;
+ GLuint layers;
+
+ if (dst->target == PIPE_TEXTURE_1D_ARRAY ||
+ dst->target == PIPE_TEXTURE_2D_ARRAY)
+ layers = dst->array_size;
+ else
+ layers = u_minify(dst->depth0, level);
+
+ DBG("%s\n", __FUNCTION__);
+
+ for (i = 0; i < layers; i++) {
+ dst_transfer = pipe_get_transfer(st->pipe, dst, level, face + i,
+ PIPE_TRANSFER_WRITE, 0, 0,
+ u_minify(dst->width0, level),
+ u_minify(dst->height0, level));
+
+ st_surface_data(pipe, dst_transfer,
+ 0, 0, /* dstx, dsty */
+ srcUB,
+ src_row_stride,
+ 0, 0, /* source x, y */
+ u_minify(dst->width0, level),
+ u_minify(dst->height0, level)); /* width, height */
+
+ pipe->transfer_destroy(pipe, dst_transfer);
+
+ srcUB += src_image_stride;
+ }
+}
+
+
+/**
+ * For debug only: get/print center pixel in the src resource.
+ */
+static void
+print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
+{
+ struct pipe_transfer *xfer;
+ struct pipe_box region;
+ ubyte *map;
+
+ region.x = src->width0 / 2;
+ region.y = src->height0 / 2;
+ region.z = 0;
+ region.width = 1;
+ region.height = 1;
+ region.depth = 1;
+
+ xfer = pipe->get_transfer(pipe, src, 0, PIPE_TRANSFER_READ, &region);
+ map = pipe->transfer_map(pipe, xfer);
+
+ printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
+
+ pipe->transfer_unmap(pipe, xfer);
+ pipe->transfer_destroy(pipe, xfer);
+}
+
+
+/**
+ * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
+ * This is used to copy mipmap images from one texture buffer to another.
+ * This typically happens when our initial guess at the total texture size
+ * is incorrect (see the guess_and_alloc_texture() function).
+ */
+void
+st_texture_image_copy(struct pipe_context *pipe,
+ struct pipe_resource *dst, GLuint dstLevel,
+ struct pipe_resource *src, GLuint srcLevel,
+ GLuint face)
+{
+ GLuint width = u_minify(dst->width0, dstLevel);
+ GLuint height = u_minify(dst->height0, dstLevel);
+ GLuint depth = u_minify(dst->depth0, dstLevel);
+ struct pipe_box src_box;
+ GLuint i;
+
+ assert(u_minify(src->width0, srcLevel) == width);
+ assert(u_minify(src->height0, srcLevel) == height);
+ assert(u_minify(src->depth0, srcLevel) == depth);
+
+ src_box.x = 0;
+ src_box.y = 0;
+ src_box.width = width;
+ src_box.height = height;
+ src_box.depth = 1;
+ /* Loop over 3D image slices */
+ /* could (and probably should) use "true" 3d box here -
+ but drivers can't quite handle it yet */
+ for (i = face; i < face + depth; i++) {
+ src_box.z = i;
+
+ if (0) {
+ print_center_pixel(pipe, src);
+ }
+
+ pipe->resource_copy_region(pipe,
+ dst,
+ dstLevel,
+ 0, 0, i,/* destX, Y, Z */
+ src,
+ srcLevel,
+ &src_box);
+ }
+}
+
+
+struct pipe_resource *
+st_create_color_map_texture(struct gl_context *ctx)
+{
+ struct st_context *st = st_context(ctx);
+ struct pipe_context *pipe = st->pipe;
+ struct pipe_resource *pt;
+ enum pipe_format format;
+ const uint texSize = 256; /* simple, and usually perfect */
+
+ /* find an RGBA texture format */
+ format = st_choose_format(pipe->screen, GL_RGBA, GL_NONE, GL_NONE,
+ PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
+
+ /* create texture for color map/table */
+ pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
+ texSize, texSize, 1, 1, PIPE_BIND_SAMPLER_VIEW);
+ return pt;
+}
+