--- /dev/null
+/*
+ * Copyright 2003 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, 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 (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 NONINFRINGEMENT.
+ * 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.
+ */
+
+#include "main/bufferobj.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "main/mtypes.h"
+#include "main/pbo.h"
+#include "main/texobj.h"
+#include "main/texstore.h"
+#include "main/texcompress.h"
+#include "main/enums.h"
+#include "drivers/common/meta.h"
+
+#include "brw_context.h"
+#include "intel_batchbuffer.h"
+#include "intel_tex.h"
+#include "intel_mipmap_tree.h"
+#include "intel_blit.h"
+#include "intel_tiled_memcpy.h"
+
+#define FILE_DEBUG_FLAG DEBUG_TEXTURE
+
+/**
+ * \brief A fast path for glTexImage and glTexSubImage.
+ *
+ * \param for_glTexImage Was this called from glTexImage or glTexSubImage?
+ *
+ * This fast path is taken when the texture format is BGRA, RGBA,
+ * A or L and when the texture memory is X- or Y-tiled. It uploads
+ * the texture data by mapping the texture memory without a GTT fence, thus
+ * acquiring a tiled view of the memory, and then copying sucessive
+ * spans within each tile.
+ *
+ * This is a performance win over the conventional texture upload path because
+ * it avoids the performance penalty of writing through the write-combine
+ * buffer. In the conventional texture upload path,
+ * texstore.c:store_texsubimage(), the texture memory is mapped through a GTT
+ * fence, thus acquiring a linear view of the memory, then each row in the
+ * image is memcpy'd. In this fast path, we replace each row's copy with
+ * a sequence of copies over each linear span in tile.
+ *
+ * One use case is Google Chrome's paint rectangles. Chrome (as
+ * of version 21) renders each page as a tiling of 256x256 GL_BGRA textures.
+ * Each page's content is initially uploaded with glTexImage2D and damaged
+ * regions are updated with glTexSubImage2D. On some workloads, the
+ * performance gain of this fastpath on Sandybridge is over 5x.
+ */
+bool
+intel_texsubimage_tiled_memcpy(struct gl_context * ctx,
+ GLuint dims,
+ struct gl_texture_image *texImage,
+ GLint xoffset, GLint yoffset, GLint zoffset,
+ GLsizei width, GLsizei height, GLsizei depth,
+ GLenum format, GLenum type,
+ const GLvoid *pixels,
+ const struct gl_pixelstore_attrib *packing,
+ bool for_glTexImage)
+{
+ struct brw_context *brw = brw_context(ctx);
+ struct intel_texture_image *image = intel_texture_image(texImage);
+ int src_pitch;
+
+ /* The miptree's buffer. */
+ drm_intel_bo *bo;
+
+ int error = 0;
+
+ uint32_t cpp;
+ mem_copy_fn mem_copy = NULL;
+
+ /* This fastpath is restricted to specific texture types:
+ * a 2D BGRA, RGBA, L8 or A8 texture. It could be generalized to support
+ * more types.
+ *
+ * FINISHME: The restrictions below on packing alignment and packing row
+ * length are likely unneeded now because we calculate the source stride
+ * with _mesa_image_row_stride. However, before removing the restrictions
+ * we need tests.
+ */
+ if (!brw->has_llc ||
+ !(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) ||
+ !(texImage->TexObject->Target == GL_TEXTURE_2D ||
+ texImage->TexObject->Target == GL_TEXTURE_RECTANGLE) ||
+ pixels == NULL ||
+ _mesa_is_bufferobj(packing->BufferObj) ||
+ packing->Alignment > 4 ||
+ packing->SkipPixels > 0 ||
+ packing->SkipRows > 0 ||
+ (packing->RowLength != 0 && packing->RowLength != width) ||
+ packing->SwapBytes ||
+ packing->LsbFirst ||
+ packing->Invert)
+ return false;
+
+ /* Only a simple blit, no scale, bias or other mapping. */
+ if (ctx->_ImageTransferState)
+ return false;
+
+ if (!intel_get_memcpy(texImage->TexFormat, format, type, &mem_copy, &cpp,
+ INTEL_UPLOAD))
+ return false;
+
+ /* If this is a nontrivial texture view, let another path handle it instead. */
+ if (texImage->TexObject->MinLayer)
+ return false;
+
+ if (for_glTexImage)
+ ctx->Driver.AllocTextureImageBuffer(ctx, texImage);
+
+ if (!image->mt ||
+ (image->mt->tiling != I915_TILING_X &&
+ image->mt->tiling != I915_TILING_Y)) {
+ /* The algorithm is written only for X- or Y-tiled memory. */
+ return false;
+ }
+
+ /* Since we are going to write raw data to the miptree, we need to resolve
+ * any pending fast color clears before we start.
+ */
+ intel_miptree_resolve_color(brw, image->mt);
+
+ bo = image->mt->bo;
+
+ if (drm_intel_bo_references(brw->batch.bo, bo)) {
+ perf_debug("Flushing before mapping a referenced bo.\n");
+ intel_batchbuffer_flush(brw);
+ }
+
+ error = brw_bo_map(brw, bo, true /* write enable */, "miptree");
+ if (error || bo->virtual == NULL) {
+ DBG("%s: failed to map bo\n", __func__);
+ return false;
+ }
+
+ src_pitch = _mesa_image_row_stride(packing, width, format, type);
+
+ /* We postponed printing this message until having committed to executing
+ * the function.
+ */
+ DBG("%s: level=%d offset=(%d,%d) (w,h)=(%d,%d) format=0x%x type=0x%x "
+ "mesa_format=0x%x tiling=%d "
+ "packing=(alignment=%d row_length=%d skip_pixels=%d skip_rows=%d) "
+ "for_glTexImage=%d\n",
+ __func__, texImage->Level, xoffset, yoffset, width, height,
+ format, type, texImage->TexFormat, image->mt->tiling,
+ packing->Alignment, packing->RowLength, packing->SkipPixels,
+ packing->SkipRows, for_glTexImage);
+
+ int level = texImage->Level + texImage->TexObject->MinLevel;
+
+ /* Adjust x and y offset based on miplevel */
+ xoffset += image->mt->level[level].level_x;
+ yoffset += image->mt->level[level].level_y;
+
+ linear_to_tiled(
+ xoffset * cpp, (xoffset + width) * cpp,
+ yoffset, yoffset + height,
+ bo->virtual,
+ pixels - (ptrdiff_t) yoffset * src_pitch - (ptrdiff_t) xoffset * cpp,
+ image->mt->pitch, src_pitch,
+ brw->has_swizzling,
+ image->mt->tiling,
+ mem_copy
+ );
+
+ drm_intel_bo_unmap(bo);
+ return true;
+}
+
+static void
+intelTexSubImage(struct gl_context * ctx,
+ GLuint dims,
+ struct gl_texture_image *texImage,
+ GLint xoffset, GLint yoffset, GLint zoffset,
+ GLsizei width, GLsizei height, GLsizei depth,
+ GLenum format, GLenum type,
+ const GLvoid * pixels,
+ const struct gl_pixelstore_attrib *packing)
+{
+ struct intel_texture_image *intelImage = intel_texture_image(texImage);
+ bool ok;
+
+ bool tex_busy = intelImage->mt && drm_intel_bo_busy(intelImage->mt->bo);
+
+ DBG("%s mesa_format %s target %s format %s type %s level %d %dx%dx%d\n",
+ __func__, _mesa_get_format_name(texImage->TexFormat),
+ _mesa_enum_to_string(texImage->TexObject->Target),
+ _mesa_enum_to_string(format), _mesa_enum_to_string(type),
+ texImage->Level, texImage->Width, texImage->Height, texImage->Depth);
+
+ ok = _mesa_meta_pbo_TexSubImage(ctx, dims, texImage,
+ xoffset, yoffset, zoffset,
+ width, height, depth, format, type,
+ pixels, false, tex_busy, packing);
+ if (ok)
+ return;
+
+ ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
+ xoffset, yoffset, zoffset,
+ width, height, depth,
+ format, type, pixels, packing,
+ false /*for_glTexImage*/);
+ if (ok)
+ return;
+
+ _mesa_store_texsubimage(ctx, dims, texImage,
+ xoffset, yoffset, zoffset,
+ width, height, depth,
+ format, type, pixels, packing);
+}
+
+void
+intelInitTextureSubImageFuncs(struct dd_function_table *functions)
+{
+ functions->TexSubImage = intelTexSubImage;
+}
projects / mesa.git / blobdiff