/* * 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. */ struct brw_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)) 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_all_slices_resolve_color(brw, image->mt, 0); bo = image->mt->bo; if (brw_batch_references(&brw->batch, bo)) { perf_debug("Flushing before mapping a referenced bo.\n"); intel_batchbuffer_flush(brw); } error = brw_bo_map(brw, bo, true /* write enable */); 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 ); brw_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_mipmap_tree *mt = intel_texture_image(texImage)->mt; bool ok; bool tex_busy = mt && brw_bo_busy(mt->bo); if (mt && mt->format == MESA_FORMAT_S_UINT8) mt->r8stencil_needs_update = true; 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, 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; }