src/mesa/drivers/dri/i965/intel_copy_image.c - platform/external/mesa3d - Git at Google

 /*
  * Mesa 3-D graphics library
  *
  * Copyright (C) 2014 Intel Corporation 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, sublicense,
  * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS 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.
  *
  * Authors:
  *    Jason Ekstrand <jason.ekstrand@intel.com>
  */

 #include "brw_blorp.h"
 #include "intel_fbo.h"
 #include "intel_tex.h"
 #include "intel_blit.h"
 #include "intel_mipmap_tree.h"
 #include "main/formats.h"
 #include "main/teximage.h"
 #include "drivers/common/meta.h"

 static void
 copy_image_with_memcpy(struct brw_context *brw,
                        struct intel_mipmap_tree *src_mt, int src_level,
                        int src_x, int src_y, int src_z,
                        struct intel_mipmap_tree *dst_mt, int dst_level,
                        int dst_x, int dst_y, int dst_z,
                        int src_width, int src_height)
 {
    bool same_slice;
    void *mapped, *src_mapped, *dst_mapped;
    ptrdiff_t src_stride, dst_stride, cpp;
    int map_x1, map_y1, map_x2, map_y2;
    GLuint src_bw, src_bh;

    cpp = _mesa_get_format_bytes(src_mt->format);
    _mesa_get_format_block_size(src_mt->format, &src_bw, &src_bh);

    assert(src_width % src_bw == 0);
    assert(src_height % src_bh == 0);
    assert(src_x % src_bw == 0);
    assert(src_y % src_bh == 0);

    /* If we are on the same miptree, same level, and same slice, then
     * intel_miptree_map won't let us map it twice.  We have to do things a
     * bit differently.  In particular, we do a single map large enough for
     * both portions and in read-write mode.
     */
    same_slice = src_mt == dst_mt && src_level == dst_level && src_z == dst_z;

    if (same_slice) {
       assert(dst_x % src_bw == 0);
       assert(dst_y % src_bh == 0);

       map_x1 = MIN2(src_x, dst_x);
       map_y1 = MIN2(src_y, dst_y);
       map_x2 = MAX2(src_x, dst_x) + src_width;
       map_y2 = MAX2(src_y, dst_y) + src_height;

       intel_miptree_map(brw, src_mt, src_level, src_z,
                         map_x1, map_y1, map_x2 - map_x1, map_y2 - map_y1,
                         GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
                         &mapped, &src_stride);

       dst_stride = src_stride;

       /* Set the offsets here so we don't have to think about while looping */
       src_mapped = mapped + ((src_y - map_y1) / src_bh) * src_stride +
                             ((src_x - map_x1) / src_bw) * cpp;
       dst_mapped = mapped + ((dst_y - map_y1) / src_bh) * dst_stride +
                             ((dst_x - map_x1) / src_bw) * cpp;
    } else {
       intel_miptree_map(brw, src_mt, src_level, src_z,
                         src_x, src_y, src_width, src_height,
                         GL_MAP_READ_BIT, &src_mapped, &src_stride);
       intel_miptree_map(brw, dst_mt, dst_level, dst_z,
                         dst_x, dst_y, src_width, src_height,
                         GL_MAP_WRITE_BIT, &dst_mapped, &dst_stride);
    }

    src_width /= (int)src_bw;
    src_height /= (int)src_bh;

    for (int i = 0; i < src_height; ++i) {
       memcpy(dst_mapped, src_mapped, src_width * cpp);
       src_mapped += src_stride;
       dst_mapped += dst_stride;
    }

    if (same_slice) {
       intel_miptree_unmap(brw, src_mt, src_level, src_z);
    } else {
       intel_miptree_unmap(brw, dst_mt, dst_level, dst_z);
       intel_miptree_unmap(brw, src_mt, src_level, src_z);
    }
 }

 static void
 copy_miptrees(struct brw_context *brw,
               struct intel_mipmap_tree *src_mt,
               int src_x, int src_y, int src_z, unsigned src_level,
               struct intel_mipmap_tree *dst_mt,
               int dst_x, int dst_y, int dst_z, unsigned dst_level,
               int src_width, int src_height)
 {
    unsigned bw, bh;

    if (brw->gen >= 6) {
       brw_blorp_copy_miptrees(brw,
                               src_mt, src_level, src_z,
                               dst_mt, dst_level, dst_z,
                               src_x, src_y, dst_x, dst_y,
                               src_width, src_height);
       return;
    }

    /* We are now going to try and copy the texture using the blitter.  If
     * that fails, we will fall back mapping the texture and using memcpy.
     * In either case, we need to do a full resolve.
     */
    intel_miptree_all_slices_resolve_hiz(brw, src_mt);
    intel_miptree_all_slices_resolve_depth(brw, src_mt);
    intel_miptree_all_slices_resolve_color(brw, src_mt, 0);

    intel_miptree_all_slices_resolve_hiz(brw, dst_mt);
    intel_miptree_all_slices_resolve_depth(brw, dst_mt);
    intel_miptree_all_slices_resolve_color(brw, dst_mt, 0);

    _mesa_get_format_block_size(src_mt->format, &bw, &bh);

    /* It's legal to have a WxH that's smaller than a compressed block. This
     * happens for example when you are using a higher level LOD. For this case,
     * we still want to copy the entire block, or else the decompression will be
     * incorrect.
     */
    if (src_width < bw)
       src_width = ALIGN_NPOT(src_width, bw);

    if (src_height < bh)
       src_height = ALIGN_NPOT(src_height, bh);

    if (intel_miptree_copy(brw, src_mt, src_level, src_z, src_x, src_y,
                           dst_mt, dst_level, dst_z, dst_x, dst_y,
                           src_width, src_height))
       return;

    /* This is a worst-case scenario software fallback that maps the two
     * textures and does a memcpy between them.
     */
    copy_image_with_memcpy(brw, src_mt, src_level,
                           src_x, src_y, src_z,
                           dst_mt, dst_level,
                           dst_x, dst_y, dst_z,
                           src_width, src_height);
 }

 static void
 intel_copy_image_sub_data(struct gl_context *ctx,
                           struct gl_texture_image *src_image,
                           struct gl_renderbuffer *src_renderbuffer,
                           int src_x, int src_y, int src_z,
                           struct gl_texture_image *dst_image,
                           struct gl_renderbuffer *dst_renderbuffer,
                           int dst_x, int dst_y, int dst_z,
                           int src_width, int src_height)
 {
    struct brw_context *brw = brw_context(ctx);
    struct intel_mipmap_tree *src_mt, *dst_mt;
    unsigned src_level, dst_level;

    if (src_image) {
       src_mt = intel_texture_image(src_image)->mt;
       src_level = src_image->Level + src_image->TexObject->MinLevel;

       /* Cube maps actually have different images per face */
       if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
          src_z = src_image->Face;

       src_z += src_image->TexObject->MinLayer;
    } else {
       assert(src_renderbuffer);
       src_mt = intel_renderbuffer(src_renderbuffer)->mt;
       src_image = src_renderbuffer->TexImage;
       src_level = 0;
    }

    if (dst_image) {
       dst_mt = intel_texture_image(dst_image)->mt;

       dst_level = dst_image->Level + dst_image->TexObject->MinLevel;

       /* Cube maps actually have different images per face */
       if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
          dst_z = dst_image->Face;

       dst_z += dst_image->TexObject->MinLayer;
    } else {
       assert(dst_renderbuffer);
       dst_mt = intel_renderbuffer(dst_renderbuffer)->mt;
       dst_image = dst_renderbuffer->TexImage;
       dst_level = 0;
    }

    copy_miptrees(brw, src_mt, src_x, src_y, src_z, src_level,
                  dst_mt, dst_x, dst_y, dst_z, dst_level,
                  src_width, src_height);

    /* CopyImage only works for equal formats, texture view equivalence
     * classes, and a couple special cases for compressed textures.
     *
     * Notably, GL_DEPTH_STENCIL does not appear in any equivalence
     * classes, so we know the formats must be the same, and thus both
     * will either have stencil, or not.  They can't be mismatched.
     */
    assert((src_mt->stencil_mt != NULL) == (dst_mt->stencil_mt != NULL));

    if (dst_mt->stencil_mt) {
       copy_miptrees(brw, src_mt->stencil_mt, src_x, src_y, src_z, src_level,
                     dst_mt->stencil_mt, dst_x, dst_y, dst_z, dst_level,
                     src_width, src_height);
    }
 }

 void
 intelInitCopyImageFuncs(struct dd_function_table *functions)
 {
    functions->CopyImageSubData = intel_copy_image_sub_data;
 }
	/*
	* Mesa 3-D graphics library
	*
	* Copyright (C) 2014 Intel Corporation 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, sublicense,
	* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS OR COPYRIGHT HOLDERS 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.
	*
	* Authors:
	* Jason Ekstrand <jason.ekstrand@intel.com>
	*/

	#include "brw_blorp.h"
	#include "intel_fbo.h"
	#include "intel_tex.h"
	#include "intel_blit.h"
	#include "intel_mipmap_tree.h"
	#include "main/formats.h"
	#include "main/teximage.h"
	#include "drivers/common/meta.h"

	static void
	copy_image_with_memcpy(struct brw_context *brw,
	struct intel_mipmap_tree *src_mt, int src_level,
	int src_x, int src_y, int src_z,
	struct intel_mipmap_tree *dst_mt, int dst_level,
	int dst_x, int dst_y, int dst_z,
	int src_width, int src_height)
	{
	bool same_slice;
	void mapped, src_mapped, *dst_mapped;
	ptrdiff_t src_stride, dst_stride, cpp;
	int map_x1, map_y1, map_x2, map_y2;
	GLuint src_bw, src_bh;

	cpp = _mesa_get_format_bytes(src_mt->format);
	_mesa_get_format_block_size(src_mt->format, &src_bw, &src_bh);

	assert(src_width % src_bw == 0);
	assert(src_height % src_bh == 0);
	assert(src_x % src_bw == 0);
	assert(src_y % src_bh == 0);

	/* If we are on the same miptree, same level, and same slice, then
	* intel_miptree_map won't let us map it twice. We have to do things a
	* bit differently. In particular, we do a single map large enough for
	* both portions and in read-write mode.
	*/
	same_slice = src_mt == dst_mt && src_level == dst_level && src_z == dst_z;

	if (same_slice) {
	assert(dst_x % src_bw == 0);
	assert(dst_y % src_bh == 0);

	map_x1 = MIN2(src_x, dst_x);
	map_y1 = MIN2(src_y, dst_y);
	map_x2 = MAX2(src_x, dst_x) + src_width;
	map_y2 = MAX2(src_y, dst_y) + src_height;

	intel_miptree_map(brw, src_mt, src_level, src_z,
	map_x1, map_y1, map_x2 - map_x1, map_y2 - map_y1,
	GL_MAP_READ_BIT \| GL_MAP_WRITE_BIT,
	&mapped, &src_stride);

	dst_stride = src_stride;

	/* Set the offsets here so we don't have to think about while looping */
	src_mapped = mapped + ((src_y - map_y1) / src_bh) * src_stride +
	((src_x - map_x1) / src_bw) * cpp;
	dst_mapped = mapped + ((dst_y - map_y1) / src_bh) * dst_stride +
	((dst_x - map_x1) / src_bw) * cpp;
	} else {
	intel_miptree_map(brw, src_mt, src_level, src_z,
	src_x, src_y, src_width, src_height,
	GL_MAP_READ_BIT, &src_mapped, &src_stride);
	intel_miptree_map(brw, dst_mt, dst_level, dst_z,
	dst_x, dst_y, src_width, src_height,
	GL_MAP_WRITE_BIT, &dst_mapped, &dst_stride);
	}

	src_width /= (int)src_bw;
	src_height /= (int)src_bh;

	for (int i = 0; i < src_height; ++i) {
	memcpy(dst_mapped, src_mapped, src_width * cpp);
	src_mapped += src_stride;
	dst_mapped += dst_stride;
	}

	if (same_slice) {
	intel_miptree_unmap(brw, src_mt, src_level, src_z);
	} else {
	intel_miptree_unmap(brw, dst_mt, dst_level, dst_z);
	intel_miptree_unmap(brw, src_mt, src_level, src_z);
	}
	}

	static void
	copy_miptrees(struct brw_context *brw,
	struct intel_mipmap_tree *src_mt,
	int src_x, int src_y, int src_z, unsigned src_level,
	struct intel_mipmap_tree *dst_mt,
	int dst_x, int dst_y, int dst_z, unsigned dst_level,
	int src_width, int src_height)
	{
	unsigned bw, bh;

	if (brw->gen >= 6) {
	brw_blorp_copy_miptrees(brw,
	src_mt, src_level, src_z,
	dst_mt, dst_level, dst_z,
	src_x, src_y, dst_x, dst_y,
	src_width, src_height);
	return;
	}

	/* We are now going to try and copy the texture using the blitter. If
	* that fails, we will fall back mapping the texture and using memcpy.
	* In either case, we need to do a full resolve.
	*/
	intel_miptree_all_slices_resolve_hiz(brw, src_mt);
	intel_miptree_all_slices_resolve_depth(brw, src_mt);
	intel_miptree_all_slices_resolve_color(brw, src_mt, 0);

	intel_miptree_all_slices_resolve_hiz(brw, dst_mt);
	intel_miptree_all_slices_resolve_depth(brw, dst_mt);
	intel_miptree_all_slices_resolve_color(brw, dst_mt, 0);

	_mesa_get_format_block_size(src_mt->format, &bw, &bh);

	/* It's legal to have a WxH that's smaller than a compressed block. This
	* happens for example when you are using a higher level LOD. For this case,
	* we still want to copy the entire block, or else the decompression will be
	* incorrect.
	*/
	if (src_width < bw)
	src_width = ALIGN_NPOT(src_width, bw);

	if (src_height < bh)
	src_height = ALIGN_NPOT(src_height, bh);

	if (intel_miptree_copy(brw, src_mt, src_level, src_z, src_x, src_y,
	dst_mt, dst_level, dst_z, dst_x, dst_y,
	src_width, src_height))
	return;

	/* This is a worst-case scenario software fallback that maps the two
	* textures and does a memcpy between them.
	*/
	copy_image_with_memcpy(brw, src_mt, src_level,
	src_x, src_y, src_z,
	dst_mt, dst_level,
	dst_x, dst_y, dst_z,
	src_width, src_height);
	}

	static void
	intel_copy_image_sub_data(struct gl_context *ctx,
	struct gl_texture_image *src_image,
	struct gl_renderbuffer *src_renderbuffer,
	int src_x, int src_y, int src_z,
	struct gl_texture_image *dst_image,
	struct gl_renderbuffer *dst_renderbuffer,
	int dst_x, int dst_y, int dst_z,
	int src_width, int src_height)
	{
	struct brw_context *brw = brw_context(ctx);
	struct intel_mipmap_tree src_mt, dst_mt;
	unsigned src_level, dst_level;

	if (src_image) {
	src_mt = intel_texture_image(src_image)->mt;
	src_level = src_image->Level + src_image->TexObject->MinLevel;

	/* Cube maps actually have different images per face */
	if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
	src_z = src_image->Face;

	src_z += src_image->TexObject->MinLayer;
	} else {
	assert(src_renderbuffer);
	src_mt = intel_renderbuffer(src_renderbuffer)->mt;
	src_image = src_renderbuffer->TexImage;
	src_level = 0;
	}

	if (dst_image) {
	dst_mt = intel_texture_image(dst_image)->mt;

	dst_level = dst_image->Level + dst_image->TexObject->MinLevel;

	/* Cube maps actually have different images per face */
	if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
	dst_z = dst_image->Face;

	dst_z += dst_image->TexObject->MinLayer;
	} else {
	assert(dst_renderbuffer);
	dst_mt = intel_renderbuffer(dst_renderbuffer)->mt;
	dst_image = dst_renderbuffer->TexImage;
	dst_level = 0;
	}

	copy_miptrees(brw, src_mt, src_x, src_y, src_z, src_level,
	dst_mt, dst_x, dst_y, dst_z, dst_level,
	src_width, src_height);

	/* CopyImage only works for equal formats, texture view equivalence
	* classes, and a couple special cases for compressed textures.
	*
	* Notably, GL_DEPTH_STENCIL does not appear in any equivalence
	* classes, so we know the formats must be the same, and thus both
	* will either have stencil, or not. They can't be mismatched.
	*/
	assert((src_mt->stencil_mt != NULL) == (dst_mt->stencil_mt != NULL));

	if (dst_mt->stencil_mt) {
	copy_miptrees(brw, src_mt->stencil_mt, src_x, src_y, src_z, src_level,
	dst_mt->stencil_mt, dst_x, dst_y, dst_z, dst_level,
	src_width, src_height);
	}
	}

	void
	intelInitCopyImageFuncs(struct dd_function_table *functions)
	{
	functions->CopyImageSubData = intel_copy_image_sub_data;
	}