X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fdrivers%2Fdri%2Fi965%2Fintel_pixel_read.c;h=8cd7579142aa115bdae72f5d613cb9a25c669317;hb=d714b20eb4617f24b496a09028a90fdd8c19b5bd;hp=cc4589f4d42ae631a07ff17e34a5d9846b1d821a;hpb=cd63e35603568c168e8aebbc47ca6ea308f2ccfa;p=mesa.git diff --git a/src/mesa/drivers/dri/i965/intel_pixel_read.c b/src/mesa/drivers/dri/i965/intel_pixel_read.c deleted file mode 120000 index cc4589f4d42..00000000000 --- a/src/mesa/drivers/dri/i965/intel_pixel_read.c +++ /dev/null @@ -1 +0,0 @@ -../intel/intel_pixel_read.c \ No newline at end of file diff --git a/src/mesa/drivers/dri/i965/intel_pixel_read.c b/src/mesa/drivers/dri/i965/intel_pixel_read.c new file mode 100644 index 00000000000..8cd7579142a --- /dev/null +++ b/src/mesa/drivers/dri/i965/intel_pixel_read.c @@ -0,0 +1,204 @@ +/************************************************************************** + * + * 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, 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 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/glheader.h" +#include "main/enums.h" +#include "main/mtypes.h" +#include "main/macros.h" +#include "main/fbobject.h" +#include "main/image.h" +#include "main/bufferobj.h" +#include "main/readpix.h" +#include "main/state.h" +#include "main/glformats.h" + +#include "brw_context.h" +#include "intel_screen.h" +#include "intel_blit.h" +#include "intel_buffers.h" +#include "intel_fbo.h" +#include "intel_mipmap_tree.h" +#include "intel_regions.h" +#include "intel_pixel.h" +#include "intel_buffer_objects.h" + +#define FILE_DEBUG_FLAG DEBUG_PIXEL + +/* For many applications, the new ability to pull the source buffers + * back out of the GTT and then do the packing/conversion operations + * in software will be as much of an improvement as trying to get the + * blitter and/or texture engine to do the work. + * + * This step is gated on private backbuffers. + * + * Obviously the frontbuffer can't be pulled back, so that is either + * an argument for blit/texture readpixels, or for blitting to a + * temporary and then pulling that back. + * + * When the destination is a pbo, however, it's not clear if it is + * ever going to be pulled to main memory (though the access param + * will be a good hint). So it sounds like we do want to be able to + * choose between blit/texture implementation on the gpu and pullback + * and cpu-based copying. + * + * Unless you can magically turn client memory into a PBO for the + * duration of this call, there will be a cpu-based copying step in + * any case. + */ + +static bool +do_blit_readpixels(struct gl_context * ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *pack, GLvoid * pixels) +{ + struct brw_context *brw = brw_context(ctx); + struct intel_buffer_object *dst = intel_buffer_object(pack->BufferObj); + GLuint dst_offset; + drm_intel_bo *dst_buffer; + GLint dst_x, dst_y; + GLuint dirty; + + DBG("%s\n", __FUNCTION__); + + assert(_mesa_is_bufferobj(pack->BufferObj)); + + struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer; + struct intel_renderbuffer *irb = intel_renderbuffer(rb); + + /* Currently this function only supports reading from color buffers. */ + if (!_mesa_is_color_format(format)) + return false; + + assert(irb != NULL); + + if (ctx->_ImageTransferState || + !_mesa_format_matches_format_and_type(irb->mt->format, format, type, + false)) { + DBG("%s - bad format for blit\n", __FUNCTION__); + return false; + } + + if (pack->SwapBytes || pack->LsbFirst) { + DBG("%s: bad packing params\n", __FUNCTION__); + return false; + } + + int dst_stride = _mesa_image_row_stride(pack, width, format, type); + bool dst_flip = false; + /* Mesa flips the dst_stride for pack->Invert, but we want our mt to have a + * normal dst_stride. + */ + struct gl_pixelstore_attrib uninverted_pack = *pack; + if (pack->Invert) { + dst_stride = -dst_stride; + dst_flip = true; + uninverted_pack.Invert = false; + } + + dst_offset = (GLintptr)pixels; + dst_offset += _mesa_image_offset(2, &uninverted_pack, width, height, + format, type, 0, 0, 0); + + if (!_mesa_clip_copytexsubimage(ctx, + &dst_x, &dst_y, + &x, &y, + &width, &height)) { + return true; + } + + dirty = brw->front_buffer_dirty; + intel_prepare_render(brw); + brw->front_buffer_dirty = dirty; + + dst_buffer = intel_bufferobj_buffer(brw, dst, + dst_offset, height * dst_stride); + + struct intel_mipmap_tree *pbo_mt = + intel_miptree_create_for_bo(brw, + dst_buffer, + irb->mt->format, + dst_offset, + width, height, + dst_stride, I915_TILING_NONE); + + if (!intel_miptree_blit(brw, + irb->mt, irb->mt_level, irb->mt_layer, + x, y, _mesa_is_winsys_fbo(ctx->ReadBuffer), + pbo_mt, 0, 0, + 0, 0, dst_flip, + width, height, GL_COPY)) { + return false; + } + + intel_miptree_release(&pbo_mt); + + DBG("%s - DONE\n", __FUNCTION__); + + return true; +} + +void +intelReadPixels(struct gl_context * ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *pack, GLvoid * pixels) +{ + struct brw_context *brw = brw_context(ctx); + bool dirty; + + DBG("%s\n", __FUNCTION__); + + if (_mesa_is_bufferobj(pack->BufferObj)) { + /* Using PBOs, so try the BLT based path. */ + if (do_blit_readpixels(ctx, x, y, width, height, format, type, pack, + pixels)) { + return; + } + + perf_debug("%s: fallback to CPU mapping in PBO case\n", __FUNCTION__); + } + + /* glReadPixels() wont dirty the front buffer, so reset the dirty + * flag after calling intel_prepare_render(). */ + dirty = brw->front_buffer_dirty; + intel_prepare_render(brw); + brw->front_buffer_dirty = dirty; + + /* Update Mesa state before calling _mesa_readpixels(). + * XXX this may not be needed since ReadPixels no longer uses the + * span code. + */ + + if (ctx->NewState) + _mesa_update_state(ctx); + + _mesa_readpixels(ctx, x, y, width, height, format, type, pack, pixels); + + /* There's an intel_prepare_render() call in intelSpanRenderStart(). */ + brw->front_buffer_dirty = dirty; +}