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Diffstat (limited to 'pixman/pixman/pixman-transformed.c')
| -rw-r--r-- | pixman/pixman/pixman-transformed.c | 813 |
1 files changed, 813 insertions, 0 deletions
diff --git a/pixman/pixman/pixman-transformed.c b/pixman/pixman/pixman-transformed.c new file mode 100644 index 000000000..5ad92ae9f --- /dev/null +++ b/pixman/pixman/pixman-transformed.c @@ -0,0 +1,813 @@ +/* + * + * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc. + * 2005 Lars Knoll & Zack Rusin, Trolltech + * 2008 Aaron Plattner, NVIDIA Corporation + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdlib.h> + +#include "pixman-private.h" + +#define Alpha(x) ((x) >> 24) +#define Red(x) (((x) >> 16) & 0xff) +#define Green(x) (((x) >> 8) & 0xff) +#define Blue(x) ((x) & 0xff) + +#define Alpha64(x) ((x) >> 48) +#define Red64(x) (((x) >> 32) & 0xffff) +#define Green64(x) (((x) >> 16) & 0xffff) +#define Blue64(x) ((x) & 0xffff) + +/* + * Fetch from region strategies + */ +typedef FASTCALL uint32_t (*fetchFromRegionProc)(bits_image_t *pict, int x, int y, uint32_t *buffer, fetchPixelProc32 fetch, pixman_box32_t *box); + +static inline uint32_t +fbFetchFromNoRegion(bits_image_t *pict, int x, int y, uint32_t *buffer, fetchPixelProc32 fetch, pixman_box32_t *box) +{ + return fetch (pict, x, y); +} + +static uint32_t +fbFetchFromNRectangles(bits_image_t *pict, int x, int y, uint32_t *buffer, fetchPixelProc32 fetch, pixman_box32_t *box) +{ + pixman_box32_t box2; + if (pixman_region32_contains_point (pict->common.src_clip, x, y, &box2)) + return fbFetchFromNoRegion(pict, x, y, buffer, fetch, box); + else + return 0; +} + +static uint32_t +fbFetchFromOneRectangle(bits_image_t *pict, int x, int y, uint32_t *buffer, fetchPixelProc32 fetch, pixman_box32_t *box) +{ + pixman_box32_t box2 = *box; + return ((x < box2.x1) | (x >= box2.x2) | (y < box2.y1) | (y >= box2.y2)) ? + 0 : fbFetchFromNoRegion(pict, x, y, buffer, fetch, box); +} + +/* + * Fetching Algorithms + */ +static void +fbFetchTransformed_Nearest_Normal(bits_image_t * pict, int width, uint32_t *buffer, uint32_t *mask, uint32_t maskBits, pixman_bool_t affine, pixman_vector_t v, pixman_vector_t unit) +{ + pixman_box32_t* box = NULL; + fetchPixelProc32 fetch; + fetchFromRegionProc fetchFromRegion; + int x, y, i; + + /* initialize the two function pointers */ + fetch = ACCESS(pixman_fetchPixelProcForPicture32)(pict); + + if(pixman_region32_n_rects (pict->common.src_clip) == 1) + fetchFromRegion = fbFetchFromNoRegion; + else + fetchFromRegion = fbFetchFromNRectangles; + + for ( i = 0; i < width; ++i) + { + if (!mask || mask[i] & maskBits) + { + if (!v.vector[2]) + { + *(buffer + i) = 0; + } + else + { + if (!affine) + { + y = MOD(DIV(v.vector[1],v.vector[2]), pict->height); + x = MOD(DIV(v.vector[0],v.vector[2]), pict->width); + } + else + { + y = MOD(v.vector[1]>>16, pict->height); + x = MOD(v.vector[0]>>16, pict->width); + } + *(buffer + i) = fetchFromRegion(pict, x, y, buffer, fetch, box); + } + } + + v.vector[0] += unit.vector[0]; + v.vector[1] += unit.vector[1]; + v.vector[2] += unit.vector[2]; + } +} + +static void +fbFetchTransformed_Nearest_Pad(bits_image_t * pict, int width, uint32_t *buffer, uint32_t *mask, uint32_t maskBits, pixman_bool_t affine, pixman_vector_t v, pixman_vector_t unit) +{ + pixman_box32_t *box = NULL; + fetchPixelProc32 fetch; + fetchFromRegionProc fetchFromRegion; + int x, y, i; + + /* initialize the two function pointers */ + fetch = ACCESS(pixman_fetchPixelProcForPicture32)(pict); + + if(pixman_region32_n_rects (pict->common.src_clip) == 1) + fetchFromRegion = fbFetchFromNoRegion; + else + fetchFromRegion = fbFetchFromNRectangles; + + for (i = 0; i < width; ++i) + { + if (!mask || mask[i] & maskBits) + { + if (!v.vector[2]) + { + *(buffer + i) = 0; + } + else + { + if (!affine) + { + y = CLIP(DIV(v.vector[1], v.vector[2]), 0, pict->height-1); + x = CLIP(DIV(v.vector[0], v.vector[2]), 0, pict->width-1); + } + else + { + y = CLIP(v.vector[1]>>16, 0, pict->height-1); + x = CLIP(v.vector[0]>>16, 0, pict->width-1); + } + + *(buffer + i) = fetchFromRegion(pict, x, y, buffer, fetch, box); + } + } + + v.vector[0] += unit.vector[0]; + v.vector[1] += unit.vector[1]; + v.vector[2] += unit.vector[2]; + } +} + +static void +fbFetchTransformed_Nearest_General(bits_image_t * pict, int width, uint32_t *buffer, uint32_t *mask, uint32_t maskBits, pixman_bool_t affine, pixman_vector_t v, pixman_vector_t unit) +{ + pixman_box32_t *box = NULL; + fetchPixelProc32 fetch; + fetchFromRegionProc fetchFromRegion; + int x, y, i; + + /* initialize the two function pointers */ + fetch = ACCESS(pixman_fetchPixelProcForPicture32)(pict); + + if(pixman_region32_n_rects (pict->common.src_clip) == 1) + { + box = &(pict->common.src_clip->extents); + fetchFromRegion = fbFetchFromOneRectangle; + } + else + { + fetchFromRegion = fbFetchFromNRectangles; + } + + for (i = 0; i < width; ++i) { + if (!mask || mask[i] & maskBits) + { + if (!v.vector[2]) { + *(buffer + i) = 0; + } else { + if (!affine) { + y = DIV(v.vector[1],v.vector[2]); + x = DIV(v.vector[0],v.vector[2]); + } else { + y = v.vector[1]>>16; + x = v.vector[0]>>16; + } + *(buffer + i) = fetchFromRegion(pict, x, y, buffer, fetch, box); + } + } + v.vector[0] += unit.vector[0]; + v.vector[1] += unit.vector[1]; + v.vector[2] += unit.vector[2]; + } +} + +static void +fbFetchTransformed_Bilinear_Normal(bits_image_t * pict, int width, uint32_t *buffer, uint32_t *mask, uint32_t maskBits, pixman_bool_t affine, pixman_vector_t v, pixman_vector_t unit) +{ + pixman_box32_t *box = NULL; + fetchPixelProc32 fetch; + fetchFromRegionProc fetchFromRegion; + int i; + + /* initialize the two function pointers */ + fetch = ACCESS(pixman_fetchPixelProcForPicture32)(pict); + + if(pixman_region32_n_rects (pict->common.src_clip) == 1) + fetchFromRegion = fbFetchFromNoRegion; + else + fetchFromRegion = fbFetchFromNRectangles; + + for (i = 0; i < width; ++i) { + if (!mask || mask[i] & maskBits) + { + if (!v.vector[2]) { + *(buffer + i) = 0; + } else { + int x1, x2, y1, y2, distx, idistx, disty, idisty; + uint32_t tl, tr, bl, br, r; + uint32_t ft, fb; + + if (!affine) { + pixman_fixed_48_16_t div; + div = ((pixman_fixed_48_16_t)v.vector[0] << 16)/v.vector[2]; + x1 = div >> 16; + distx = ((pixman_fixed_t)div >> 8) & 0xff; + div = ((pixman_fixed_48_16_t)v.vector[1] << 16)/v.vector[2]; + y1 = div >> 16; + disty = ((pixman_fixed_t)div >> 8) & 0xff; + } else { + x1 = v.vector[0] >> 16; + distx = (v.vector[0] >> 8) & 0xff; + y1 = v.vector[1] >> 16; + disty = (v.vector[1] >> 8) & 0xff; + } + x2 = x1 + 1; + y2 = y1 + 1; + + idistx = 256 - distx; + idisty = 256 - disty; + + x1 = MOD (x1, pict->width); + x2 = MOD (x2, pict->width); + y1 = MOD (y1, pict->height); + y2 = MOD (y2, pict->height); + + tl = fetchFromRegion(pict, x1, y1, buffer, fetch, box); + tr = fetchFromRegion(pict, x2, y1, buffer, fetch, box); + bl = fetchFromRegion(pict, x1, y2, buffer, fetch, box); + br = fetchFromRegion(pict, x2, y2, buffer, fetch, box); + + ft = FbGet8(tl,0) * idistx + FbGet8(tr,0) * distx; + fb = FbGet8(bl,0) * idistx + FbGet8(br,0) * distx; + r = (((ft * idisty + fb * disty) >> 16) & 0xff); + ft = FbGet8(tl,8) * idistx + FbGet8(tr,8) * distx; + fb = FbGet8(bl,8) * idistx + FbGet8(br,8) * distx; + r |= (((ft * idisty + fb * disty) >> 8) & 0xff00); + ft = FbGet8(tl,16) * idistx + FbGet8(tr,16) * distx; + fb = FbGet8(bl,16) * idistx + FbGet8(br,16) * distx; + r |= (((ft * idisty + fb * disty)) & 0xff0000); + ft = FbGet8(tl,24) * idistx + FbGet8(tr,24) * distx; + fb = FbGet8(bl,24) * idistx + FbGet8(br,24) * distx; + r |= (((ft * idisty + fb * disty) << 8) & 0xff000000); + *(buffer + i) = r; + } + } + v.vector[0] += unit.vector[0]; + v.vector[1] += unit.vector[1]; + v.vector[2] += unit.vector[2]; + } +} + +static void +fbFetchTransformed_Bilinear_Pad(bits_image_t * pict, int width, uint32_t *buffer, uint32_t *mask, uint32_t maskBits, pixman_bool_t affine, pixman_vector_t v, pixman_vector_t unit) +{ + pixman_box32_t *box = NULL; + fetchPixelProc32 fetch; + fetchFromRegionProc fetchFromRegion; + int i; + + /* initialize the two function pointers */ + fetch = ACCESS(pixman_fetchPixelProcForPicture32)(pict); + + if(pixman_region32_n_rects (pict->common.src_clip) == 1) + fetchFromRegion = fbFetchFromNoRegion; + else + fetchFromRegion = fbFetchFromNRectangles; + + for (i = 0; i < width; ++i) { + if (!mask || mask[i] & maskBits) + { + if (!v.vector[2]) { + *(buffer + i) = 0; + } else { + int x1, x2, y1, y2, distx, idistx, disty, idisty; + uint32_t tl, tr, bl, br, r; + uint32_t ft, fb; + + if (!affine) { + pixman_fixed_48_16_t div; + div = ((pixman_fixed_48_16_t)v.vector[0] << 16)/v.vector[2]; + x1 = div >> 16; + distx = ((pixman_fixed_t)div >> 8) & 0xff; + div = ((pixman_fixed_48_16_t)v.vector[1] << 16)/v.vector[2]; + y1 = div >> 16; + disty = ((pixman_fixed_t)div >> 8) & 0xff; + } else { + x1 = v.vector[0] >> 16; + distx = (v.vector[0] >> 8) & 0xff; + y1 = v.vector[1] >> 16; + disty = (v.vector[1] >> 8) & 0xff; + } + x2 = x1 + 1; + y2 = y1 + 1; + + idistx = 256 - distx; + idisty = 256 - disty; + + x1 = CLIP (x1, 0, pict->width-1); + x2 = CLIP (x2, 0, pict->width-1); + y1 = CLIP (y1, 0, pict->height-1); + y2 = CLIP (y2, 0, pict->height-1); + + tl = fetchFromRegion(pict, x1, y1, buffer, fetch, box); + tr = fetchFromRegion(pict, x2, y1, buffer, fetch, box); + bl = fetchFromRegion(pict, x1, y2, buffer, fetch, box); + br = fetchFromRegion(pict, x2, y2, buffer, fetch, box); + + ft = FbGet8(tl,0) * idistx + FbGet8(tr,0) * distx; + fb = FbGet8(bl,0) * idistx + FbGet8(br,0) * distx; + r = (((ft * idisty + fb * disty) >> 16) & 0xff); + ft = FbGet8(tl,8) * idistx + FbGet8(tr,8) * distx; + fb = FbGet8(bl,8) * idistx + FbGet8(br,8) * distx; + r |= (((ft * idisty + fb * disty) >> 8) & 0xff00); + ft = FbGet8(tl,16) * idistx + FbGet8(tr,16) * distx; + fb = FbGet8(bl,16) * idistx + FbGet8(br,16) * distx; + r |= (((ft * idisty + fb * disty)) & 0xff0000); + ft = FbGet8(tl,24) * idistx + FbGet8(tr,24) * distx; + fb = FbGet8(bl,24) * idistx + FbGet8(br,24) * distx; + r |= (((ft * idisty + fb * disty) << 8) & 0xff000000); + *(buffer + i) = r; + } + } + v.vector[0] += unit.vector[0]; + v.vector[1] += unit.vector[1]; + v.vector[2] += unit.vector[2]; + } +} + +static void +fbFetchTransformed_Bilinear_General(bits_image_t * pict, int width, uint32_t *buffer, uint32_t *mask, uint32_t maskBits, pixman_bool_t affine, pixman_vector_t v, pixman_vector_t unit) +{ + pixman_box32_t *box = NULL; + fetchPixelProc32 fetch; + fetchFromRegionProc fetchFromRegion; + int i; + + /* initialize the two function pointers */ + fetch = ACCESS(pixman_fetchPixelProcForPicture32)(pict); + + if(pixman_region32_n_rects (pict->common.src_clip) == 1) + { + box = &(pict->common.src_clip->extents); + fetchFromRegion = fbFetchFromOneRectangle; + } + else + { + fetchFromRegion = fbFetchFromNRectangles; + } + + for (i = 0; i < width; ++i) + { + if (!mask || mask[i] & maskBits) + { + if (!v.vector[2]) { + *(buffer + i) = 0; + } else { + int x1, x2, y1, y2, distx, idistx, disty, idisty; + uint32_t tl, tr, bl, br, r; + uint32_t ft, fb; + + if (!affine) { + pixman_fixed_48_16_t div; + div = ((pixman_fixed_48_16_t)v.vector[0] << 16)/v.vector[2]; + x1 = div >> 16; + distx = ((pixman_fixed_t)div >> 8) & 0xff; + div = ((pixman_fixed_48_16_t)v.vector[1] << 16)/v.vector[2]; + y1 = div >> 16; + disty = ((pixman_fixed_t)div >> 8) & 0xff; + } else { + x1 = v.vector[0] >> 16; + distx = (v.vector[0] >> 8) & 0xff; + y1 = v.vector[1] >> 16; + disty = (v.vector[1] >> 8) & 0xff; + } + x2 = x1 + 1; + y2 = y1 + 1; + + idistx = 256 - distx; + idisty = 256 - disty; + + tl = fetchFromRegion(pict, x1, y1, buffer, fetch, box); + tr = fetchFromRegion(pict, x2, y1, buffer, fetch, box); + bl = fetchFromRegion(pict, x1, y2, buffer, fetch, box); + br = fetchFromRegion(pict, x2, y2, buffer, fetch, box); + + ft = FbGet8(tl,0) * idistx + FbGet8(tr,0) * distx; + fb = FbGet8(bl,0) * idistx + FbGet8(br,0) * distx; + r = (((ft * idisty + fb * disty) >> 16) & 0xff); + ft = FbGet8(tl,8) * idistx + FbGet8(tr,8) * distx; + fb = FbGet8(bl,8) * idistx + FbGet8(br,8) * distx; + r |= (((ft * idisty + fb * disty) >> 8) & 0xff00); + ft = FbGet8(tl,16) * idistx + FbGet8(tr,16) * distx; + fb = FbGet8(bl,16) * idistx + FbGet8(br,16) * distx; + r |= (((ft * idisty + fb * disty)) & 0xff0000); + ft = FbGet8(tl,24) * idistx + FbGet8(tr,24) * distx; + fb = FbGet8(bl,24) * idistx + FbGet8(br,24) * distx; + r |= (((ft * idisty + fb * disty) << 8) & 0xff000000); + *(buffer + i) = r; + } + } + + v.vector[0] += unit.vector[0]; + v.vector[1] += unit.vector[1]; + v.vector[2] += unit.vector[2]; + } +} + +static void +fbFetchTransformed_Convolution(bits_image_t * pict, int width, uint32_t *buffer, uint32_t *mask, uint32_t maskBits, pixman_bool_t affine, pixman_vector_t v, pixman_vector_t unit) +{ + pixman_box32_t dummy; + fetchPixelProc32 fetch; + int i; + + pixman_fixed_t *params = pict->common.filter_params; + int32_t cwidth = pixman_fixed_to_int(params[0]); + int32_t cheight = pixman_fixed_to_int(params[1]); + int xoff = (params[0] - pixman_fixed_1) >> 1; + int yoff = (params[1] - pixman_fixed_1) >> 1; + fetch = ACCESS(pixman_fetchPixelProcForPicture32)(pict); + + params += 2; + for (i = 0; i < width; ++i) { + if (!mask || mask[i] & maskBits) + { + if (!v.vector[2]) { + *(buffer + i) = 0; + } else { + int x1, x2, y1, y2, x, y; + int32_t srtot, sgtot, sbtot, satot; + pixman_fixed_t *p = params; + + if (!affine) { + pixman_fixed_48_16_t tmp; + tmp = ((pixman_fixed_48_16_t)v.vector[0] << 16)/v.vector[2] - xoff; + x1 = pixman_fixed_to_int(tmp); + tmp = ((pixman_fixed_48_16_t)v.vector[1] << 16)/v.vector[2] - yoff; + y1 = pixman_fixed_to_int(tmp); + } else { + x1 = pixman_fixed_to_int(v.vector[0] - xoff); + y1 = pixman_fixed_to_int(v.vector[1] - yoff); + } + x2 = x1 + cwidth; + y2 = y1 + cheight; + + srtot = sgtot = sbtot = satot = 0; + + for (y = y1; y < y2; y++) { + int ty; + switch (pict->common.repeat) { + case PIXMAN_REPEAT_NORMAL: + ty = MOD (y, pict->height); + break; + case PIXMAN_REPEAT_PAD: + ty = CLIP (y, 0, pict->height-1); + break; + default: + ty = y; + } + for (x = x1; x < x2; x++) { + if (*p) { + int tx; + switch (pict->common.repeat) { + case PIXMAN_REPEAT_NORMAL: + tx = MOD (x, pict->width); + break; + case PIXMAN_REPEAT_PAD: + tx = CLIP (x, 0, pict->width-1); + break; + default: + tx = x; + } + if (pixman_region32_contains_point (pict->common.src_clip, tx, ty, &dummy)) { + uint32_t c = fetch(pict, tx, ty); + + srtot += Red(c) * *p; + sgtot += Green(c) * *p; + sbtot += Blue(c) * *p; + satot += Alpha(c) * *p; + } + } + p++; + } + } + + satot >>= 16; + srtot >>= 16; + sgtot >>= 16; + sbtot >>= 16; + + if (satot < 0) satot = 0; else if (satot > 0xff) satot = 0xff; + if (srtot < 0) srtot = 0; else if (srtot > 0xff) srtot = 0xff; + if (sgtot < 0) sgtot = 0; else if (sgtot > 0xff) sgtot = 0xff; + if (sbtot < 0) sbtot = 0; else if (sbtot > 0xff) sbtot = 0xff; + + *(buffer + i) = ((satot << 24) | + (srtot << 16) | + (sgtot << 8) | + (sbtot )); + } + } + v.vector[0] += unit.vector[0]; + v.vector[1] += unit.vector[1]; + v.vector[2] += unit.vector[2]; + } +} + +static void +adjust (pixman_vector_t *v, pixman_vector_t *u, pixman_fixed_t adjustment) +{ + int delta_v = (adjustment * v->vector[2]) >> 16; + int delta_u = (adjustment * u->vector[2]) >> 16; + + v->vector[0] += delta_v; + v->vector[1] += delta_v; + + u->vector[0] += delta_u; + u->vector[1] += delta_u; +} + +void +ACCESS(fbFetchTransformed)(bits_image_t * pict, int x, int y, int width, + uint32_t *buffer, uint32_t *mask, uint32_t maskBits) +{ + uint32_t *bits; + int32_t stride; + pixman_vector_t v; + pixman_vector_t unit; + pixman_bool_t affine = TRUE; + + bits = pict->bits; + stride = pict->rowstride; + + /* reference point is the center of the pixel */ + v.vector[0] = pixman_int_to_fixed(x) + pixman_fixed_1 / 2; + v.vector[1] = pixman_int_to_fixed(y) + pixman_fixed_1 / 2; + v.vector[2] = pixman_fixed_1; + + /* when using convolution filters or PIXMAN_REPEAT_PAD one might get here without a transform */ + if (pict->common.transform) + { + if (!pixman_transform_point_3d (pict->common.transform, &v)) + return; + unit.vector[0] = pict->common.transform->matrix[0][0]; + unit.vector[1] = pict->common.transform->matrix[1][0]; + unit.vector[2] = pict->common.transform->matrix[2][0]; + affine = v.vector[2] == pixman_fixed_1 && unit.vector[2] == 0; + } + else + { + unit.vector[0] = pixman_fixed_1; + unit.vector[1] = 0; + unit.vector[2] = 0; + } + + /* This allows filtering code to pretend that pixels are located at integer coordinates */ + adjust (&v, &unit, -(pixman_fixed_1 / 2)); + + if (pict->common.filter == PIXMAN_FILTER_NEAREST || pict->common.filter == PIXMAN_FILTER_FAST) + { + /* Round down to closest integer, ensuring that 0.5 rounds to 0, not 1 */ + adjust (&v, &unit, pixman_fixed_1 / 2 - pixman_fixed_e); + + if (pict->common.repeat == PIXMAN_REPEAT_NORMAL) + { + fbFetchTransformed_Nearest_Normal(pict, width, buffer, mask, maskBits, affine, v, unit); + } + else if (pict->common.repeat == PIXMAN_REPEAT_PAD) + { + fbFetchTransformed_Nearest_Pad(pict, width, buffer, mask, maskBits, affine, v, unit); + } + else + { + fbFetchTransformed_Nearest_General(pict, width, buffer, mask, maskBits, affine, v, unit); + } + } else if (pict->common.filter == PIXMAN_FILTER_BILINEAR || + pict->common.filter == PIXMAN_FILTER_GOOD || + pict->common.filter == PIXMAN_FILTER_BEST) + { + if (pict->common.repeat == PIXMAN_REPEAT_NORMAL) + { + fbFetchTransformed_Bilinear_Normal(pict, width, buffer, mask, maskBits, affine, v, unit); + } + else if (pict->common.repeat == PIXMAN_REPEAT_PAD) + { + fbFetchTransformed_Bilinear_Pad(pict, width, buffer, mask, maskBits, affine, v, unit); + } + else + { + fbFetchTransformed_Bilinear_General(pict, width, buffer, mask, maskBits, affine, v, unit); + } + } + else if (pict->common.filter == PIXMAN_FILTER_CONVOLUTION) + { + /* Round to closest integer, ensuring that 0.5 rounds to 0, not 1 */ + adjust (&v, &unit, pixman_fixed_1 / 2 - pixman_fixed_e); + + fbFetchTransformed_Convolution(pict, width, buffer, mask, maskBits, affine, v, unit); + } +} + +void +ACCESS(fbFetchTransformed64)(bits_image_t * pict, int x, int y, int width, + uint64_t *buffer, uint64_t *mask, uint32_t maskBits) +{ + // TODO: Don't lose precision for wide pictures! + uint32_t *mask8 = NULL; + + // Contract the mask image, if one exists, so that the 32-bit fetch function + // can use it. + if (mask) { + mask8 = pixman_malloc_ab(width, sizeof(uint32_t)); + pixman_contract(mask8, mask, width); + } + + // Fetch the image into the first half of buffer. + ACCESS(fbFetchTransformed)(pict, x, y, width, (uint32_t*)buffer, mask8, + maskBits); + + // Expand from 32bpp to 64bpp in place. + pixman_expand(buffer, (uint32_t*)buffer, PIXMAN_a8r8g8b8, width); + + free(mask8); +} + +#define SCANLINE_BUFFER_LENGTH 2048 + +void +ACCESS(fbFetchExternalAlpha)(bits_image_t * pict, int x, int y, int width, + uint32_t *buffer, uint32_t *mask, + uint32_t maskBits) +{ + int i; + uint32_t _alpha_buffer[SCANLINE_BUFFER_LENGTH]; + uint32_t *alpha_buffer = _alpha_buffer; + + if (!pict->common.alpha_map) { + ACCESS(fbFetchTransformed) (pict, x, y, width, buffer, mask, maskBits); + return; + } + if (width > SCANLINE_BUFFER_LENGTH) + alpha_buffer = (uint32_t *) pixman_malloc_ab (width, sizeof(uint32_t)); + + ACCESS(fbFetchTransformed)(pict, x, y, width, buffer, mask, maskBits); + ACCESS(fbFetchTransformed)((bits_image_t *)pict->common.alpha_map, x - pict->common.alpha_origin.x, + y - pict->common.alpha_origin.y, width, + alpha_buffer, mask, maskBits); + for (i = 0; i < width; ++i) { + if (!mask || mask[i] & maskBits) + { + int a = alpha_buffer[i]>>24; + *(buffer + i) = (a << 24) + | (div_255(Red(*(buffer + i)) * a) << 16) + | (div_255(Green(*(buffer + i)) * a) << 8) + | (div_255(Blue(*(buffer + i)) * a)); + } + } + + if (alpha_buffer != _alpha_buffer) + free(alpha_buffer); +} + +void +ACCESS(fbFetchExternalAlpha64)(bits_image_t * pict, int x, int y, int width, + uint64_t *buffer, uint64_t *mask, + uint32_t maskBits) +{ + int i; + uint64_t _alpha_buffer[SCANLINE_BUFFER_LENGTH]; + uint64_t *alpha_buffer = _alpha_buffer; + uint64_t maskBits64; + + if (!pict->common.alpha_map) { + ACCESS(fbFetchTransformed64) (pict, x, y, width, buffer, mask, maskBits); + return; + } + if (width > SCANLINE_BUFFER_LENGTH) + alpha_buffer = (uint64_t *) pixman_malloc_ab (width, sizeof(uint64_t)); + + ACCESS(fbFetchTransformed64)(pict, x, y, width, buffer, mask, maskBits); + ACCESS(fbFetchTransformed64)((bits_image_t *)pict->common.alpha_map, x - pict->common.alpha_origin.x, + y - pict->common.alpha_origin.y, width, + alpha_buffer, mask, maskBits); + + pixman_expand(&maskBits64, &maskBits, PIXMAN_a8r8g8b8, 1); + + for (i = 0; i < width; ++i) { + if (!mask || mask[i] & maskBits64) + { + int64_t a = alpha_buffer[i]>>48; + *(buffer + i) = (a << 48) + | (div_65535(Red64(*(buffer + i)) * a) << 32) + | (div_65535(Green64(*(buffer + i)) * a) << 16) + | (div_65535(Blue64(*(buffer + i)) * a)); + } + } + + if (alpha_buffer != _alpha_buffer) + free(alpha_buffer); +} + +void +ACCESS(fbStoreExternalAlpha)(bits_image_t * pict, int x, int y, int width, + uint32_t *buffer) +{ + uint32_t *bits, *alpha_bits; + int32_t stride, astride; + int ax, ay; + storeProc32 store; + storeProc32 astore; + const pixman_indexed_t * indexed = pict->indexed; + const pixman_indexed_t * aindexed; + + if (!pict->common.alpha_map) { + // XXX[AGP]: This should never happen! + // fbStore(pict, x, y, width, buffer); + abort(); + return; + } + + store = ACCESS(pixman_storeProcForPicture32)(pict); + astore = ACCESS(pixman_storeProcForPicture32)(pict->common.alpha_map); + aindexed = pict->common.alpha_map->indexed; + + ax = x; + ay = y; + + bits = pict->bits; + stride = pict->rowstride; + + alpha_bits = pict->common.alpha_map->bits; + astride = pict->common.alpha_map->rowstride; + + bits += y*stride; + alpha_bits += (ay - pict->common.alpha_origin.y)*astride; + + + store((pixman_image_t *)pict, bits, buffer, x, width, indexed); + astore((pixman_image_t *)pict->common.alpha_map, + alpha_bits, buffer, ax - pict->common.alpha_origin.x, width, aindexed); +} + +void +ACCESS(fbStoreExternalAlpha64)(bits_image_t * pict, int x, int y, int width, + uint64_t *buffer) +{ + uint32_t *bits, *alpha_bits; + int32_t stride, astride; + int ax, ay; + storeProc64 store; + storeProc64 astore; + const pixman_indexed_t * indexed = pict->indexed; + const pixman_indexed_t * aindexed; + + store = ACCESS(pixman_storeProcForPicture64)(pict); + astore = ACCESS(pixman_storeProcForPicture64)(pict->common.alpha_map); + aindexed = pict->common.alpha_map->indexed; + + ax = x; + ay = y; + + bits = pict->bits; + stride = pict->rowstride; + + alpha_bits = pict->common.alpha_map->bits; + astride = pict->common.alpha_map->rowstride; + + bits += y*stride; + alpha_bits += (ay - pict->common.alpha_origin.y)*astride; + + + store((pixman_image_t *)pict, bits, buffer, x, width, indexed); + astore((pixman_image_t *)pict->common.alpha_map, + alpha_bits, buffer, ax - pict->common.alpha_origin.x, width, aindexed); +} |