505 lines
19 KiB
C
505 lines
19 KiB
C
/*
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* Copyright © 2017 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include "pipe/p_defines.h"
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#include "pipe/p_state.h"
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#include "pipe/p_context.h"
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#include "pipe/p_screen.h"
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#include "util/u_format.h"
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#include "util/u_inlines.h"
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#include "util/ralloc.h"
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#include "intel/blorp/blorp.h"
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#include "iris_context.h"
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#include "iris_resource.h"
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#include "iris_screen.h"
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/**
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* Helper function for handling mirror image blits.
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*
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* If coord0 > coord1, swap them and return "true" (mirrored).
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*/
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static bool
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apply_mirror(float *coord0, float *coord1)
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{
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if (*coord0 > *coord1) {
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float tmp = *coord0;
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*coord0 = *coord1;
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*coord1 = tmp;
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return true;
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}
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return false;
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}
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/**
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* Compute the number of pixels to clip for each side of a rect
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*
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* \param x0 The rect's left coordinate
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* \param y0 The rect's bottom coordinate
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* \param x1 The rect's right coordinate
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* \param y1 The rect's top coordinate
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* \param min_x The clipping region's left coordinate
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* \param min_y The clipping region's bottom coordinate
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* \param max_x The clipping region's right coordinate
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* \param max_y The clipping region's top coordinate
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* \param clipped_x0 The number of pixels to clip from the left side
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* \param clipped_y0 The number of pixels to clip from the bottom side
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* \param clipped_x1 The number of pixels to clip from the right side
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* \param clipped_y1 The number of pixels to clip from the top side
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*
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* \return false if we clip everything away, true otherwise
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*/
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static inline bool
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compute_pixels_clipped(float x0, float y0, float x1, float y1,
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float min_x, float min_y, float max_x, float max_y,
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float *clipped_x0, float *clipped_y0,
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float *clipped_x1, float *clipped_y1)
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{
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/* If we are going to clip everything away, stop. */
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if (!(min_x <= max_x &&
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min_y <= max_y &&
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x0 <= max_x &&
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y0 <= max_y &&
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min_x <= x1 &&
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min_y <= y1 &&
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x0 <= x1 &&
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y0 <= y1)) {
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return false;
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}
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if (x0 < min_x)
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*clipped_x0 = min_x - x0;
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else
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*clipped_x0 = 0;
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if (max_x < x1)
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*clipped_x1 = x1 - max_x;
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else
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*clipped_x1 = 0;
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if (y0 < min_y)
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*clipped_y0 = min_y - y0;
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else
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*clipped_y0 = 0;
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if (max_y < y1)
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*clipped_y1 = y1 - max_y;
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else
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*clipped_y1 = 0;
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return true;
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}
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/**
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* Clips a coordinate (left, right, top or bottom) for the src or dst rect
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* (whichever requires the largest clip) and adjusts the coordinate
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* for the other rect accordingly.
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*
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* \param mirror true if mirroring is required
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* \param src the source rect coordinate (for example src_x0)
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* \param dst0 the dst rect coordinate (for example dst_x0)
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* \param dst1 the opposite dst rect coordinate (for example dst_x1)
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* \param clipped_dst0 number of pixels to clip from the dst coordinate
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* \param clipped_dst1 number of pixels to clip from the opposite dst coordinate
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* \param scale the src vs dst scale involved for that coordinate
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* \param is_left_or_bottom true if we are clipping the left or bottom sides
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* of the rect.
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*/
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static void
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clip_coordinates(bool mirror,
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float *src, float *dst0, float *dst1,
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float clipped_dst0,
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float clipped_dst1,
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float scale,
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bool is_left_or_bottom)
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{
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/* When clipping we need to add or subtract pixels from the original
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* coordinates depending on whether we are acting on the left/bottom
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* or right/top sides of the rect respectively. We assume we have to
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* add them in the code below, and multiply by -1 when we should
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* subtract.
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*/
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int mult = is_left_or_bottom ? 1 : -1;
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if (!mirror) {
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*dst0 += clipped_dst0 * mult;
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*src += clipped_dst0 * scale * mult;
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} else {
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*dst1 -= clipped_dst1 * mult;
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*src += clipped_dst1 * scale * mult;
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}
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}
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/**
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* Apply a scissor rectangle to blit coordinates.
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*
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* Returns true if the blit was entirely scissored away.
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*/
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static bool
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apply_blit_scissor(const struct pipe_scissor_state *scissor,
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float *src_x0, float *src_y0,
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float *src_x1, float *src_y1,
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float *dst_x0, float *dst_y0,
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float *dst_x1, float *dst_y1,
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bool mirror_x, bool mirror_y)
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{
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float clip_dst_x0, clip_dst_x1, clip_dst_y0, clip_dst_y1;
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/* Compute number of pixels to scissor away. */
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if (!compute_pixels_clipped(*dst_x0, *dst_y0, *dst_x1, *dst_y1,
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scissor->minx, scissor->miny,
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scissor->maxx, scissor->maxy,
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&clip_dst_x0, &clip_dst_y0,
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&clip_dst_x1, &clip_dst_y1))
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return true;
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// XXX: comments assume source clipping, which we don't do
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/* When clipping any of the two rects we need to adjust the coordinates
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* in the other rect considering the scaling factor involved. To obtain
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* the best precision we want to make sure that we only clip once per
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* side to avoid accumulating errors due to the scaling adjustment.
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*
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* For example, if src_x0 and dst_x0 need both to be clipped we want to
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* avoid the situation where we clip src_x0 first, then adjust dst_x0
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* accordingly but then we realize that the resulting dst_x0 still needs
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* to be clipped, so we clip dst_x0 and adjust src_x0 again. Because we are
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* applying scaling factors to adjust the coordinates in each clipping
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* pass we lose some precision and that can affect the results of the
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* blorp blit operation slightly. What we want to do here is detect the
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* rect that we should clip first for each side so that when we adjust
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* the other rect we ensure the resulting coordinate does not need to be
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* clipped again.
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*
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* The code below implements this by comparing the number of pixels that
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* we need to clip for each side of both rects considering the scales
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* involved. For example, clip_src_x0 represents the number of pixels
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* to be clipped for the src rect's left side, so if clip_src_x0 = 5,
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* clip_dst_x0 = 4 and scale_x = 2 it means that we are clipping more
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* from the dst rect so we should clip dst_x0 only and adjust src_x0.
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* This is because clipping 4 pixels in the dst is equivalent to
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* clipping 4 * 2 = 8 > 5 in the src.
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*/
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float scale_x = (float) (*src_x1 - *src_x0) / (*dst_x1 - *dst_x0);
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float scale_y = (float) (*src_y1 - *src_y0) / (*dst_y1 - *dst_y0);
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/* Clip left side */
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clip_coordinates(mirror_x, src_x0, dst_x0, dst_x1,
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clip_dst_x0, clip_dst_x1, scale_x, true);
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/* Clip right side */
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clip_coordinates(mirror_x, src_x1, dst_x1, dst_x0,
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clip_dst_x1, clip_dst_x0, scale_x, false);
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/* Clip bottom side */
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clip_coordinates(mirror_y, src_y0, dst_y0, dst_y1,
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clip_dst_y0, clip_dst_y1, scale_y, true);
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/* Clip top side */
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clip_coordinates(mirror_y, src_y1, dst_y1, dst_y0,
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clip_dst_y1, clip_dst_y0, scale_y, false);
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return false;
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}
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void
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iris_blorp_surf_for_resource(struct blorp_surf *surf,
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struct pipe_resource *p_res,
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enum isl_aux_usage aux_usage,
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bool is_render_target)
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{
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struct iris_resource *res = (void *) p_res;
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*surf = (struct blorp_surf) {
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.surf = &res->surf,
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.addr = (struct blorp_address) {
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.buffer = res->bo,
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.offset = 0, // XXX: ???
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.reloc_flags = is_render_target ? EXEC_OBJECT_WRITE : 0,
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.mocs = I915_MOCS_CACHED, // XXX: BDW MOCS, PTE MOCS
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},
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.aux_usage = aux_usage,
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};
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if (aux_usage != ISL_AUX_USAGE_NONE) {
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surf->aux_surf = &res->aux.surf;
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surf->aux_addr = (struct blorp_address) {
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.buffer = res->aux.bo,
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.offset = res->aux.offset,
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.reloc_flags = is_render_target ? EXEC_OBJECT_WRITE : 0,
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.mocs = I915_MOCS_CACHED,
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};
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}
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// XXX: ASTC
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}
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/**
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* The pipe->blit() driver hook.
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*
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* This performs a blit between two surfaces, which copies data but may
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* also perform format conversion, scaling, flipping, and so on.
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*/
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static void
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iris_blit(struct pipe_context *ctx, const struct pipe_blit_info *info)
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{
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struct iris_context *ice = (void *) ctx;
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struct iris_screen *screen = (struct iris_screen *)ctx->screen;
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const struct gen_device_info *devinfo = &screen->devinfo;
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enum blorp_batch_flags blorp_flags = 0;
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struct iris_resource *src_res = (void *) info->src.resource;
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struct iris_resource *dst_res = (void *) info->dst.resource;
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/* We don't support color masking. */
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assert((info->mask & PIPE_MASK_RGBA) == PIPE_MASK_RGBA ||
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(info->mask & PIPE_MASK_RGBA) == 0);
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if (info->render_condition_enable) {
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if (ice->state.predicate == IRIS_PREDICATE_STATE_DONT_RENDER)
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return;
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if (ice->state.predicate == IRIS_PREDICATE_STATE_USE_BIT)
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blorp_flags |= BLORP_BATCH_PREDICATE_ENABLE;
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}
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struct iris_format_info src_fmt =
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iris_format_for_usage(devinfo, info->src.format,
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ISL_SURF_USAGE_TEXTURE_BIT);
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enum isl_aux_usage src_aux_usage =
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iris_resource_texture_aux_usage(ice, src_res, src_fmt.fmt, 0);
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if (src_aux_usage == ISL_AUX_USAGE_HIZ)
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src_aux_usage = ISL_AUX_USAGE_NONE;
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bool src_clear_supported = src_aux_usage != ISL_AUX_USAGE_NONE &&
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src_res->surf.format == src_fmt.fmt;
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iris_resource_prepare_access(ice, src_res, info->src.level, 1,
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info->src.box.z, info->src.box.depth,
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src_aux_usage, src_clear_supported);
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struct iris_format_info dst_fmt =
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iris_format_for_usage(devinfo, info->dst.format,
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ISL_SURF_USAGE_RENDER_TARGET_BIT);
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enum isl_aux_usage dst_aux_usage =
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iris_resource_render_aux_usage(ice, dst_res, dst_fmt.fmt, false, false);
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bool dst_clear_supported = dst_aux_usage != ISL_AUX_USAGE_NONE;
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struct blorp_surf src_surf, dst_surf;
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iris_blorp_surf_for_resource(&src_surf, info->src.resource,
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ISL_AUX_USAGE_NONE, false);
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iris_blorp_surf_for_resource(&dst_surf, info->dst.resource,
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ISL_AUX_USAGE_NONE, true);
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iris_resource_prepare_access(ice, dst_res, info->dst.level, 1,
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info->dst.box.z, info->dst.box.depth,
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dst_aux_usage, dst_clear_supported);
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float src_x0 = info->src.box.x;
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float src_x1 = info->src.box.x + info->src.box.width;
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float src_y0 = info->src.box.y;
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float src_y1 = info->src.box.y + info->src.box.height;
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float dst_x0 = info->dst.box.x;
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float dst_x1 = info->dst.box.x + info->dst.box.width;
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float dst_y0 = info->dst.box.y;
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float dst_y1 = info->dst.box.y + info->dst.box.height;
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bool mirror_x = apply_mirror(&src_x0, &src_x1);
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bool mirror_y = apply_mirror(&src_y0, &src_y1);
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enum blorp_filter filter;
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if (info->scissor_enable) {
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bool noop = apply_blit_scissor(&info->scissor,
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&src_x0, &src_y0, &src_x1, &src_y1,
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&dst_x0, &dst_y0, &dst_x1, &dst_y1,
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mirror_x, mirror_y);
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if (noop)
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return;
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}
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if (abs(info->dst.box.width) == abs(info->src.box.width) &&
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abs(info->dst.box.height) == abs(info->src.box.height)) {
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if (src_surf.surf->samples > 1 && dst_surf.surf->samples <= 1) {
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/* The OpenGL ES 3.2 specification, section 16.2.1, says:
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*
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* "If the read framebuffer is multisampled (its effective
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* value of SAMPLE_BUFFERS is one) and the draw framebuffer
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* is not (its value of SAMPLE_BUFFERS is zero), the samples
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* corresponding to each pixel location in the source are
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* converted to a single sample before being written to the
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* destination. The filter parameter is ignored. If the
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* source formats are integer types or stencil values, a
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* single sample’s value is selected for each pixel. If the
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* source formats are floating-point or normalized types,
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* the sample values for each pixel are resolved in an
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* implementation-dependent manner. If the source formats
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* are depth values, sample values are resolved in an
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* implementation-dependent manner where the result will be
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* between the minimum and maximum depth values in the pixel."
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*
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* When selecting a single sample, we always choose sample 0.
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*/
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if (util_format_is_depth_or_stencil(info->src.format) ||
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util_format_is_pure_integer(info->src.format)) {
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filter = BLORP_FILTER_SAMPLE_0;
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} else {
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filter = BLORP_FILTER_AVERAGE;
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}
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} else {
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/* The OpenGL 4.6 specification, section 18.3.1, says:
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*
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* "If the source and destination dimensions are identical,
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* no filtering is applied."
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*
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* Using BLORP_FILTER_NONE will also handle the upsample case by
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* replicating the one value in the source to all values in the
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* destination.
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*/
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filter = BLORP_FILTER_NONE;
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}
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} else if (info->filter == PIPE_TEX_FILTER_LINEAR) {
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filter = BLORP_FILTER_BILINEAR;
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} else {
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filter = BLORP_FILTER_NEAREST;
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}
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struct iris_batch *batch = &ice->batches[IRIS_BATCH_RENDER];
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struct blorp_batch blorp_batch;
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blorp_batch_init(&ice->blorp, &blorp_batch, batch, blorp_flags);
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unsigned main_mask;
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if (info->dst.format == PIPE_FORMAT_S8_UINT)
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main_mask = PIPE_MASK_S;
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else if (util_format_is_depth_or_stencil(info->dst.format))
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main_mask = PIPE_MASK_Z;
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else
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main_mask = PIPE_MASK_RGBA;
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if (info->mask & main_mask) {
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for (int slice = 0; slice < info->dst.box.depth; slice++) {
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iris_batch_maybe_flush(batch, 1500);
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blorp_blit(&blorp_batch,
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&src_surf, info->src.level, info->src.box.z + slice,
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src_fmt.fmt, src_fmt.swizzle,
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&dst_surf, info->dst.level, info->dst.box.z + slice,
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dst_fmt.fmt, ISL_SWIZZLE_IDENTITY,
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src_x0, src_y0, src_x1, src_y1,
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dst_x0, dst_y0, dst_x1, dst_y1,
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filter, mirror_x, mirror_y);
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}
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}
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if ((info->mask & PIPE_MASK_S) &&
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util_format_is_depth_and_stencil(info->dst.format) &&
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util_format_has_stencil(util_format_description(info->src.format))) {
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struct iris_resource *src_res, *dst_res, *junk;
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iris_get_depth_stencil_resources(info->src.resource, &junk, &src_res);
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iris_get_depth_stencil_resources(info->dst.resource, &junk, &dst_res);
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iris_blorp_surf_for_resource(&src_surf, &src_res->base,
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ISL_AUX_USAGE_NONE, false);
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iris_blorp_surf_for_resource(&dst_surf, &dst_res->base,
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ISL_AUX_USAGE_NONE, true);
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for (int slice = 0; slice < info->dst.box.depth; slice++) {
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iris_batch_maybe_flush(batch, 1500);
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blorp_blit(&blorp_batch,
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&src_surf, info->src.level, info->src.box.z + slice,
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ISL_FORMAT_R8_UINT, ISL_SWIZZLE_IDENTITY,
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&dst_surf, info->dst.level, info->dst.box.z + slice,
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ISL_FORMAT_R8_UINT, ISL_SWIZZLE_IDENTITY,
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src_x0, src_y0, src_x1, src_y1,
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dst_x0, dst_y0, dst_x1, dst_y1,
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filter, mirror_x, mirror_y);
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}
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}
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blorp_batch_finish(&blorp_batch);
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iris_resource_finish_write(ice, dst_res, info->dst.level, info->dst.box.z,
|
||
info->dst.box.depth, dst_aux_usage);
|
||
|
||
iris_flush_and_dirty_for_history(ice, batch, (struct iris_resource *)
|
||
info->dst.resource);
|
||
}
|
||
|
||
/**
|
||
* The pipe->resource_copy_region() driver hook.
|
||
*
|
||
* This implements ARB_copy_image semantics - a raw memory copy between
|
||
* compatible view classes.
|
||
*/
|
||
static void
|
||
iris_resource_copy_region(struct pipe_context *ctx,
|
||
struct pipe_resource *dst,
|
||
unsigned dst_level,
|
||
unsigned dstx, unsigned dsty, unsigned dstz,
|
||
struct pipe_resource *src,
|
||
unsigned src_level,
|
||
const struct pipe_box *src_box)
|
||
{
|
||
struct blorp_batch blorp_batch;
|
||
struct iris_context *ice = (void *) ctx;
|
||
struct iris_batch *batch = &ice->batches[IRIS_BATCH_RENDER];
|
||
|
||
blorp_batch_init(&ice->blorp, &blorp_batch, batch, 0);
|
||
|
||
if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
|
||
struct blorp_address src_addr = {
|
||
.buffer = iris_resource_bo(src), .offset = src_box->x,
|
||
};
|
||
struct blorp_address dst_addr = {
|
||
.buffer = iris_resource_bo(dst), .offset = dstx,
|
||
};
|
||
|
||
iris_batch_maybe_flush(batch, 1500);
|
||
|
||
blorp_buffer_copy(&blorp_batch, src_addr, dst_addr, src_box->width);
|
||
} else {
|
||
// XXX: what about one surface being a buffer and not the other?
|
||
|
||
struct blorp_surf src_surf, dst_surf;
|
||
iris_blorp_surf_for_resource(&src_surf, src, ISL_AUX_USAGE_NONE, false);
|
||
iris_blorp_surf_for_resource(&dst_surf, dst, ISL_AUX_USAGE_NONE, true);
|
||
|
||
for (int slice = 0; slice < src_box->depth; slice++) {
|
||
iris_batch_maybe_flush(batch, 1500);
|
||
|
||
blorp_copy(&blorp_batch, &src_surf, src_level, src_box->z + slice,
|
||
&dst_surf, dst_level, dstz + slice,
|
||
src_box->x, src_box->y, dstx, dsty,
|
||
src_box->width, src_box->height);
|
||
}
|
||
}
|
||
|
||
blorp_batch_finish(&blorp_batch);
|
||
|
||
iris_flush_and_dirty_for_history(ice, batch, (struct iris_resource *) dst);
|
||
}
|
||
|
||
void
|
||
iris_init_blit_functions(struct pipe_context *ctx)
|
||
{
|
||
ctx->blit = iris_blit;
|
||
ctx->resource_copy_region = iris_resource_copy_region;
|
||
}
|