src/gallium/drivers/r300/r300_transfer.c - platform/external/mesa3d - Git at Google

 /*
  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
  *
  * 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
  * on 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
  * THE AUTHOR(S) AND/OR THEIR 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 "r300_transfer.h"
 #include "r300_texture_desc.h"
 #include "r300_screen_buffer.h"

 #include "util/u_memory.h"
 #include "util/format/u_format.h"
 #include "util/u_box.h"

 struct r300_transfer {
     /* Parent class */
     struct pipe_transfer transfer;

     /* Offset from start of buffer. */
     unsigned offset;

     /* Linear texture. */
     struct r300_resource *linear_texture;
 };

 /* Convenience cast wrapper. */
 static inline struct r300_transfer*
 r300_transfer(struct pipe_transfer* transfer)
 {
     return (struct r300_transfer*)transfer;
 }

 /* Copy from a tiled texture to a detiled one. */
 static void r300_copy_from_tiled_texture(struct pipe_context *ctx,
                                          struct r300_transfer *r300transfer)
 {
     struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
     struct pipe_resource *src = transfer->resource;
     struct pipe_resource *dst = &r300transfer->linear_texture->b.b;

     if (src->nr_samples <= 1) {
         ctx->resource_copy_region(ctx, dst, 0, 0, 0, 0,
                                   src, transfer->level, &transfer->box);
     } else {
         /* Resolve the resource. */
         struct pipe_blit_info blit;

         memset(&blit, 0, sizeof(blit));
         blit.src.resource = src;
         blit.src.format = src->format;
         blit.src.level = transfer->level;
         blit.src.box = transfer->box;
         blit.dst.resource = dst;
         blit.dst.format = dst->format;
         blit.dst.box.width = transfer->box.width;
         blit.dst.box.height = transfer->box.height;
         blit.dst.box.depth = transfer->box.depth;
         blit.mask = PIPE_MASK_RGBA;
         blit.filter = PIPE_TEX_FILTER_NEAREST;

         ctx->blit(ctx, &blit);
     }
 }

 /* Copy a detiled texture to a tiled one. */
 static void r300_copy_into_tiled_texture(struct pipe_context *ctx,
                                          struct r300_transfer *r300transfer)
 {
     struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
     struct pipe_resource *tex = transfer->resource;
     struct pipe_box src_box;

     u_box_3d(0, 0, 0,
              transfer->box.width, transfer->box.height, transfer->box.depth,
              &src_box);

     ctx->resource_copy_region(ctx, tex, transfer->level,
                               transfer->box.x, transfer->box.y, transfer->box.z,
                               &r300transfer->linear_texture->b.b, 0, &src_box);

     /* XXX remove this. */
     r300_flush(ctx, 0, NULL);
 }

 void *
 r300_texture_transfer_map(struct pipe_context *ctx,
                           struct pipe_resource *texture,
                           unsigned level,
                           unsigned usage,
                           const struct pipe_box *box,
                           struct pipe_transfer **transfer)
 {
     struct r300_context *r300 = r300_context(ctx);
     struct r300_resource *tex = r300_resource(texture);
     struct r300_transfer *trans;
     boolean referenced_cs, referenced_hw;
     enum pipe_format format = tex->b.b.format;
     char *map;

     referenced_cs =
         r300->rws->cs_is_buffer_referenced(r300->cs, tex->buf, RADEON_USAGE_READWRITE);
     if (referenced_cs) {
         referenced_hw = TRUE;
     } else {
         referenced_hw =
             !r300->rws->buffer_wait(tex->buf, 0, RADEON_USAGE_READWRITE);
     }

     trans = CALLOC_STRUCT(r300_transfer);
     if (trans) {
         /* Initialize the transfer object. */
         trans->transfer.resource = texture;
         trans->transfer.level = level;
         trans->transfer.usage = usage;
         trans->transfer.box = *box;

         /* If the texture is tiled, we must create a temporary detiled texture
          * for this transfer.
          * Also make write transfers pipelined. */
         if (tex->tex.microtile || tex->tex.macrotile[level] ||
             (referenced_hw && !(usage & PIPE_MAP_READ) &&
              r300_is_blit_supported(texture->format))) {
             struct pipe_resource base;

             if (r300->blitter->running) {
                 fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n");
                 os_break();
             }

             memset(&base, 0, sizeof(base));
             base.target = PIPE_TEXTURE_2D;
             base.format = texture->format;
             base.width0 = box->width;
             base.height0 = box->height;
             base.depth0 = 1;
             base.array_size = 1;
             base.usage = PIPE_USAGE_STAGING;
             base.flags = R300_RESOURCE_FLAG_TRANSFER;

             /* We must set the correct texture target and dimensions if needed for a 3D transfer. */
             if (box->depth > 1 && util_max_layer(texture, level) > 0) {
                 base.target = texture->target;

                 if (base.target == PIPE_TEXTURE_3D) {
                     base.depth0 = util_next_power_of_two(box->depth);
                 }
             }

             /* Create the temporary texture. */
             trans->linear_texture = r300_resource(
                ctx->screen->resource_create(ctx->screen,
                                             &base));

             if (!trans->linear_texture) {
                 /* Oh crap, the thing can't create the texture.
                  * Let's flush and try again. */
                 r300_flush(ctx, 0, NULL);

                 trans->linear_texture = r300_resource(
                    ctx->screen->resource_create(ctx->screen,
                                                 &base));

                 if (!trans->linear_texture) {
                     fprintf(stderr,
                             "r300: Failed to create a transfer object.\n");
                     FREE(trans);
                     return NULL;
                 }
             }

             assert(!trans->linear_texture->tex.microtile &&
                    !trans->linear_texture->tex.macrotile[0]);

             /* Set the stride. */
             trans->transfer.stride =
                     trans->linear_texture->tex.stride_in_bytes[0];
             trans->transfer.layer_stride =
                     trans->linear_texture->tex.layer_size_in_bytes[0];

             if (usage & PIPE_MAP_READ) {
                 /* We cannot map a tiled texture directly because the data is
                  * in a different order, therefore we do detiling using a blit. */
                 r300_copy_from_tiled_texture(ctx, trans);

                 /* Always referenced in the blit. */
                 r300_flush(ctx, 0, NULL);
             }
         } else {
             /* Unpipelined transfer. */
             trans->transfer.stride = tex->tex.stride_in_bytes[level];
             trans->transfer.layer_stride = tex->tex.layer_size_in_bytes[level];
             trans->offset = r300_texture_get_offset(tex, level, box->z);

             if (referenced_cs &&
                 !(usage & PIPE_MAP_UNSYNCHRONIZED)) {
                 r300_flush(ctx, 0, NULL);
             }
         }
     }

     if (trans->linear_texture) {
         /* The detiled texture is of the same size as the region being mapped
          * (no offset needed). */
         map = r300->rws->buffer_map(trans->linear_texture->buf,
                                     r300->cs, usage);
         if (!map) {
             pipe_resource_reference(
                 (struct pipe_resource**)&trans->linear_texture, NULL);
             FREE(trans);
             return NULL;
         }
 	*transfer = &trans->transfer;
         return map;
     } else {
         /* Tiling is disabled. */
         map = r300->rws->buffer_map(tex->buf, r300->cs, usage);
         if (!map) {
             FREE(trans);
             return NULL;
         }

 	*transfer = &trans->transfer;
         return map + trans->offset +
             box->y / util_format_get_blockheight(format) * trans->transfer.stride +
             box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
     }
 }

 void r300_texture_transfer_unmap(struct pipe_context *ctx,
 				 struct pipe_transfer *transfer)
 {
     struct r300_transfer *trans = r300_transfer(transfer);

     if (trans->linear_texture) {
         if (transfer->usage & PIPE_MAP_WRITE) {
             r300_copy_into_tiled_texture(ctx, trans);
         }

         pipe_resource_reference(
             (struct pipe_resource**)&trans->linear_texture, NULL);
     }
     FREE(transfer);
 }
	/*
	* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
	* Copyright 2010 Marek Olšák <maraeo@gmail.com>
	*
	* 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
	* on 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
	* THE AUTHOR(S) AND/OR THEIR 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 "r300_transfer.h"
	#include "r300_texture_desc.h"
	#include "r300_screen_buffer.h"

	#include "util/u_memory.h"
	#include "util/format/u_format.h"
	#include "util/u_box.h"

	struct r300_transfer {
	/* Parent class */
	struct pipe_transfer transfer;

	/* Offset from start of buffer. */
	unsigned offset;

	/* Linear texture. */
	struct r300_resource *linear_texture;
	};

	/* Convenience cast wrapper. */
	static inline struct r300_transfer*
	r300_transfer(struct pipe_transfer* transfer)
	{
	return (struct r300_transfer*)transfer;
	}

	/* Copy from a tiled texture to a detiled one. */
	static void r300_copy_from_tiled_texture(struct pipe_context *ctx,
	struct r300_transfer *r300transfer)
	{
	struct pipe_transfer transfer = (struct pipe_transfer)r300transfer;
	struct pipe_resource *src = transfer->resource;
	struct pipe_resource *dst = &r300transfer->linear_texture->b.b;

	if (src->nr_samples <= 1) {
	ctx->resource_copy_region(ctx, dst, 0, 0, 0, 0,
	src, transfer->level, &transfer->box);
	} else {
	/* Resolve the resource. */
	struct pipe_blit_info blit;

	memset(&blit, 0, sizeof(blit));
	blit.src.resource = src;
	blit.src.format = src->format;
	blit.src.level = transfer->level;
	blit.src.box = transfer->box;
	blit.dst.resource = dst;
	blit.dst.format = dst->format;
	blit.dst.box.width = transfer->box.width;
	blit.dst.box.height = transfer->box.height;
	blit.dst.box.depth = transfer->box.depth;
	blit.mask = PIPE_MASK_RGBA;
	blit.filter = PIPE_TEX_FILTER_NEAREST;

	ctx->blit(ctx, &blit);
	}
	}

	/* Copy a detiled texture to a tiled one. */
	static void r300_copy_into_tiled_texture(struct pipe_context *ctx,
	struct r300_transfer *r300transfer)
	{
	struct pipe_transfer transfer = (struct pipe_transfer)r300transfer;
	struct pipe_resource *tex = transfer->resource;
	struct pipe_box src_box;

	u_box_3d(0, 0, 0,
	transfer->box.width, transfer->box.height, transfer->box.depth,
	&src_box);

	ctx->resource_copy_region(ctx, tex, transfer->level,
	transfer->box.x, transfer->box.y, transfer->box.z,
	&r300transfer->linear_texture->b.b, 0, &src_box);

	/* XXX remove this. */
	r300_flush(ctx, 0, NULL);
	}

	void *
	r300_texture_transfer_map(struct pipe_context *ctx,
	struct pipe_resource *texture,
	unsigned level,
	unsigned usage,
	const struct pipe_box *box,
	struct pipe_transfer **transfer)
	{
	struct r300_context *r300 = r300_context(ctx);
	struct r300_resource *tex = r300_resource(texture);
	struct r300_transfer *trans;
	boolean referenced_cs, referenced_hw;
	enum pipe_format format = tex->b.b.format;
	char *map;

	referenced_cs =
	r300->rws->cs_is_buffer_referenced(r300->cs, tex->buf, RADEON_USAGE_READWRITE);
	if (referenced_cs) {
	referenced_hw = TRUE;
	} else {
	referenced_hw =
	!r300->rws->buffer_wait(tex->buf, 0, RADEON_USAGE_READWRITE);
	}

	trans = CALLOC_STRUCT(r300_transfer);
	if (trans) {
	/* Initialize the transfer object. */
	trans->transfer.resource = texture;
	trans->transfer.level = level;
	trans->transfer.usage = usage;
	trans->transfer.box = *box;

	/* If the texture is tiled, we must create a temporary detiled texture
	* for this transfer.
	* Also make write transfers pipelined. */
	if (tex->tex.microtile \|\| tex->tex.macrotile[level] \|\|
	(referenced_hw && !(usage & PIPE_MAP_READ) &&
	r300_is_blit_supported(texture->format))) {
	struct pipe_resource base;

	if (r300->blitter->running) {
	fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n");
	os_break();
	}

	memset(&base, 0, sizeof(base));
	base.target = PIPE_TEXTURE_2D;
	base.format = texture->format;
	base.width0 = box->width;
	base.height0 = box->height;
	base.depth0 = 1;
	base.array_size = 1;
	base.usage = PIPE_USAGE_STAGING;
	base.flags = R300_RESOURCE_FLAG_TRANSFER;

	/* We must set the correct texture target and dimensions if needed for a 3D transfer. */
	if (box->depth > 1 && util_max_layer(texture, level) > 0) {
	base.target = texture->target;

	if (base.target == PIPE_TEXTURE_3D) {
	base.depth0 = util_next_power_of_two(box->depth);
	}
	}

	/* Create the temporary texture. */
	trans->linear_texture = r300_resource(
	ctx->screen->resource_create(ctx->screen,
	&base));

	if (!trans->linear_texture) {
	/* Oh crap, the thing can't create the texture.
	* Let's flush and try again. */
	r300_flush(ctx, 0, NULL);

	trans->linear_texture = r300_resource(
	ctx->screen->resource_create(ctx->screen,
	&base));

	if (!trans->linear_texture) {
	fprintf(stderr,
	"r300: Failed to create a transfer object.\n");
	FREE(trans);
	return NULL;
	}
	}

	assert(!trans->linear_texture->tex.microtile &&
	!trans->linear_texture->tex.macrotile[0]);

	/* Set the stride. */
	trans->transfer.stride =
	trans->linear_texture->tex.stride_in_bytes[0];
	trans->transfer.layer_stride =
	trans->linear_texture->tex.layer_size_in_bytes[0];

	if (usage & PIPE_MAP_READ) {
	/* We cannot map a tiled texture directly because the data is
	* in a different order, therefore we do detiling using a blit. */
	r300_copy_from_tiled_texture(ctx, trans);

	/* Always referenced in the blit. */
	r300_flush(ctx, 0, NULL);
	}
	} else {
	/* Unpipelined transfer. */
	trans->transfer.stride = tex->tex.stride_in_bytes[level];
	trans->transfer.layer_stride = tex->tex.layer_size_in_bytes[level];
	trans->offset = r300_texture_get_offset(tex, level, box->z);

	if (referenced_cs &&
	!(usage & PIPE_MAP_UNSYNCHRONIZED)) {
	r300_flush(ctx, 0, NULL);
	}
	}
	}

	if (trans->linear_texture) {
	/* The detiled texture is of the same size as the region being mapped
	* (no offset needed). */
	map = r300->rws->buffer_map(trans->linear_texture->buf,
	r300->cs, usage);
	if (!map) {
	pipe_resource_reference(
	(struct pipe_resource**)&trans->linear_texture, NULL);
	FREE(trans);
	return NULL;
	}
	*transfer = &trans->transfer;
	return map;
	} else {
	/* Tiling is disabled. */
	map = r300->rws->buffer_map(tex->buf, r300->cs, usage);
	if (!map) {
	FREE(trans);
	return NULL;
	}

	*transfer = &trans->transfer;
	return map + trans->offset +
	box->y / util_format_get_blockheight(format) * trans->transfer.stride +
	box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
	}
	}

	void r300_texture_transfer_unmap(struct pipe_context *ctx,
	struct pipe_transfer *transfer)
	{
	struct r300_transfer *trans = r300_transfer(transfer);

	if (trans->linear_texture) {
	if (transfer->usage & PIPE_MAP_WRITE) {
	r300_copy_into_tiled_texture(ctx, trans);
	}

	pipe_resource_reference(
	(struct pipe_resource**)&trans->linear_texture, NULL);
	}
	FREE(transfer);
	}