| /* -*- Mode: c; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t; -*- */ |
| /* |
| * Copyright © 2000 SuSE, Inc. |
| * Copyright © 2007 Red Hat, Inc. |
| * |
| * 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 SuSE not be used in advertising or |
| * publicity pertaining to distribution of the software without specific, |
| * written prior permission. SuSE makes no representations about the |
| * suitability of this software for any purpose. It is provided "as is" |
| * without express or implied warranty. |
| * |
| * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE |
| * 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. |
| * |
| * Author: Keith Packard, SuSE, Inc. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| #include "pixman-private.h" |
| |
| #include <stdlib.h> |
| |
| static pixman_implementation_t *imp; |
| |
| typedef struct operator_info_t operator_info_t; |
| |
| struct operator_info_t |
| { |
| uint8_t opaque_info[4]; |
| }; |
| |
| #define PACK(neither, src, dest, both) \ |
| {{ (uint8_t)PIXMAN_OP_ ## neither, \ |
| (uint8_t)PIXMAN_OP_ ## src, \ |
| (uint8_t)PIXMAN_OP_ ## dest, \ |
| (uint8_t)PIXMAN_OP_ ## both }} |
| |
| static const operator_info_t operator_table[] = |
| { |
| /* Neither Opaque Src Opaque Dst Opaque Both Opaque */ |
| PACK (CLEAR, CLEAR, CLEAR, CLEAR), |
| PACK (SRC, SRC, SRC, SRC), |
| PACK (DST, DST, DST, DST), |
| PACK (OVER, SRC, OVER, SRC), |
| PACK (OVER_REVERSE, OVER_REVERSE, DST, DST), |
| PACK (IN, IN, SRC, SRC), |
| PACK (IN_REVERSE, DST, IN_REVERSE, DST), |
| PACK (OUT, OUT, CLEAR, CLEAR), |
| PACK (OUT_REVERSE, CLEAR, OUT_REVERSE, CLEAR), |
| PACK (ATOP, IN, OVER, SRC), |
| PACK (ATOP_REVERSE, OVER_REVERSE, IN_REVERSE, DST), |
| PACK (XOR, OUT, OUT_REVERSE, CLEAR), |
| PACK (ADD, ADD, ADD, ADD), |
| PACK (SATURATE, OVER_REVERSE, DST, DST), |
| |
| {{ 0 /* 0x0e */ }}, |
| {{ 0 /* 0x0f */ }}, |
| |
| PACK (CLEAR, CLEAR, CLEAR, CLEAR), |
| PACK (SRC, SRC, SRC, SRC), |
| PACK (DST, DST, DST, DST), |
| PACK (DISJOINT_OVER, DISJOINT_OVER, DISJOINT_OVER, DISJOINT_OVER), |
| PACK (DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE, DISJOINT_OVER_REVERSE), |
| PACK (DISJOINT_IN, DISJOINT_IN, DISJOINT_IN, DISJOINT_IN), |
| PACK (DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE, DISJOINT_IN_REVERSE), |
| PACK (DISJOINT_OUT, DISJOINT_OUT, DISJOINT_OUT, DISJOINT_OUT), |
| PACK (DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE, DISJOINT_OUT_REVERSE), |
| PACK (DISJOINT_ATOP, DISJOINT_ATOP, DISJOINT_ATOP, DISJOINT_ATOP), |
| PACK (DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE, DISJOINT_ATOP_REVERSE), |
| PACK (DISJOINT_XOR, DISJOINT_XOR, DISJOINT_XOR, DISJOINT_XOR), |
| |
| {{ 0 /* 0x1c */ }}, |
| {{ 0 /* 0x1d */ }}, |
| {{ 0 /* 0x1e */ }}, |
| {{ 0 /* 0x1f */ }}, |
| |
| PACK (CLEAR, CLEAR, CLEAR, CLEAR), |
| PACK (SRC, SRC, SRC, SRC), |
| PACK (DST, DST, DST, DST), |
| PACK (CONJOINT_OVER, CONJOINT_OVER, CONJOINT_OVER, CONJOINT_OVER), |
| PACK (CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE, CONJOINT_OVER_REVERSE), |
| PACK (CONJOINT_IN, CONJOINT_IN, CONJOINT_IN, CONJOINT_IN), |
| PACK (CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE, CONJOINT_IN_REVERSE), |
| PACK (CONJOINT_OUT, CONJOINT_OUT, CONJOINT_OUT, CONJOINT_OUT), |
| PACK (CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE, CONJOINT_OUT_REVERSE), |
| PACK (CONJOINT_ATOP, CONJOINT_ATOP, CONJOINT_ATOP, CONJOINT_ATOP), |
| PACK (CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE, CONJOINT_ATOP_REVERSE), |
| PACK (CONJOINT_XOR, CONJOINT_XOR, CONJOINT_XOR, CONJOINT_XOR), |
| |
| {{ 0 /* 0x2c */ }}, |
| {{ 0 /* 0x2d */ }}, |
| {{ 0 /* 0x2e */ }}, |
| {{ 0 /* 0x2f */ }}, |
| |
| PACK (MULTIPLY, MULTIPLY, MULTIPLY, MULTIPLY), |
| PACK (SCREEN, SCREEN, SCREEN, SCREEN), |
| PACK (OVERLAY, OVERLAY, OVERLAY, OVERLAY), |
| PACK (DARKEN, DARKEN, DARKEN, DARKEN), |
| PACK (LIGHTEN, LIGHTEN, LIGHTEN, LIGHTEN), |
| PACK (COLOR_DODGE, COLOR_DODGE, COLOR_DODGE, COLOR_DODGE), |
| PACK (COLOR_BURN, COLOR_BURN, COLOR_BURN, COLOR_BURN), |
| PACK (HARD_LIGHT, HARD_LIGHT, HARD_LIGHT, HARD_LIGHT), |
| PACK (SOFT_LIGHT, SOFT_LIGHT, SOFT_LIGHT, SOFT_LIGHT), |
| PACK (DIFFERENCE, DIFFERENCE, DIFFERENCE, DIFFERENCE), |
| PACK (EXCLUSION, EXCLUSION, EXCLUSION, EXCLUSION), |
| PACK (HSL_HUE, HSL_HUE, HSL_HUE, HSL_HUE), |
| PACK (HSL_SATURATION, HSL_SATURATION, HSL_SATURATION, HSL_SATURATION), |
| PACK (HSL_COLOR, HSL_COLOR, HSL_COLOR, HSL_COLOR), |
| PACK (HSL_LUMINOSITY, HSL_LUMINOSITY, HSL_LUMINOSITY, HSL_LUMINOSITY), |
| }; |
| |
| /* |
| * Optimize the current operator based on opacity of source or destination |
| * The output operator should be mathematically equivalent to the source. |
| */ |
| static pixman_op_t |
| optimize_operator (pixman_op_t op, |
| uint32_t src_flags, |
| uint32_t mask_flags, |
| uint32_t dst_flags) |
| { |
| pixman_bool_t is_source_opaque, is_dest_opaque; |
| int opaqueness; |
| |
| is_source_opaque = ((src_flags & mask_flags) & FAST_PATH_IS_OPAQUE) != 0; |
| is_dest_opaque = (dst_flags & FAST_PATH_IS_OPAQUE) != 0; |
| |
| opaqueness = ((is_dest_opaque << 1) | is_source_opaque); |
| |
| return operator_table[op].opaque_info[opaqueness]; |
| } |
| |
| static void |
| apply_workaround (pixman_image_t *image, |
| int32_t * x, |
| int32_t * y, |
| uint32_t ** save_bits, |
| int * save_dx, |
| int * save_dy) |
| { |
| if (image && (image->common.flags & FAST_PATH_NEEDS_WORKAROUND)) |
| { |
| /* Some X servers generate images that point to the |
| * wrong place in memory, but then set the clip region |
| * to point to the right place. Because of an old bug |
| * in pixman, this would actually work. |
| * |
| * Here we try and undo the damage |
| */ |
| int bpp = PIXMAN_FORMAT_BPP (image->bits.format) / 8; |
| pixman_box32_t *extents; |
| uint8_t *t; |
| int dx, dy; |
| |
| extents = pixman_region32_extents (&(image->common.clip_region)); |
| dx = extents->x1; |
| dy = extents->y1; |
| |
| *save_bits = image->bits.bits; |
| |
| *x -= dx; |
| *y -= dy; |
| pixman_region32_translate (&(image->common.clip_region), -dx, -dy); |
| |
| t = (uint8_t *)image->bits.bits; |
| t += dy * image->bits.rowstride * 4 + dx * bpp; |
| image->bits.bits = (uint32_t *)t; |
| |
| *save_dx = dx; |
| *save_dy = dy; |
| } |
| } |
| |
| static void |
| unapply_workaround (pixman_image_t *image, uint32_t *bits, int dx, int dy) |
| { |
| if (image && (image->common.flags & FAST_PATH_NEEDS_WORKAROUND)) |
| { |
| image->bits.bits = bits; |
| pixman_region32_translate (&image->common.clip_region, dx, dy); |
| } |
| } |
| |
| /* |
| * Computing composite region |
| */ |
| static inline pixman_bool_t |
| clip_general_image (pixman_region32_t * region, |
| pixman_region32_t * clip, |
| int dx, |
| int dy) |
| { |
| if (pixman_region32_n_rects (region) == 1 && |
| pixman_region32_n_rects (clip) == 1) |
| { |
| pixman_box32_t * rbox = pixman_region32_rectangles (region, NULL); |
| pixman_box32_t * cbox = pixman_region32_rectangles (clip, NULL); |
| int v; |
| |
| if (rbox->x1 < (v = cbox->x1 + dx)) |
| rbox->x1 = v; |
| if (rbox->x2 > (v = cbox->x2 + dx)) |
| rbox->x2 = v; |
| if (rbox->y1 < (v = cbox->y1 + dy)) |
| rbox->y1 = v; |
| if (rbox->y2 > (v = cbox->y2 + dy)) |
| rbox->y2 = v; |
| if (rbox->x1 >= rbox->x2 || rbox->y1 >= rbox->y2) |
| { |
| pixman_region32_init (region); |
| return FALSE; |
| } |
| } |
| else if (!pixman_region32_not_empty (clip)) |
| { |
| return FALSE; |
| } |
| else |
| { |
| if (dx || dy) |
| pixman_region32_translate (region, -dx, -dy); |
| |
| if (!pixman_region32_intersect (region, region, clip)) |
| return FALSE; |
| |
| if (dx || dy) |
| pixman_region32_translate (region, dx, dy); |
| } |
| |
| return pixman_region32_not_empty (region); |
| } |
| |
| static inline pixman_bool_t |
| clip_source_image (pixman_region32_t * region, |
| pixman_image_t * image, |
| int dx, |
| int dy) |
| { |
| /* Source clips are ignored, unless they are explicitly turned on |
| * and the clip in question was set by an X client. (Because if |
| * the clip was not set by a client, then it is a hierarchy |
| * clip and those should always be ignored for sources). |
| */ |
| if (!image->common.clip_sources || !image->common.client_clip) |
| return TRUE; |
| |
| return clip_general_image (region, |
| &image->common.clip_region, |
| dx, dy); |
| } |
| |
| /* |
| * returns FALSE if the final region is empty. Indistinguishable from |
| * an allocation failure, but rendering ignores those anyways. |
| */ |
| static pixman_bool_t |
| pixman_compute_composite_region32 (pixman_region32_t * region, |
| pixman_image_t * src_image, |
| pixman_image_t * mask_image, |
| pixman_image_t * dst_image, |
| int32_t src_x, |
| int32_t src_y, |
| int32_t mask_x, |
| int32_t mask_y, |
| int32_t dest_x, |
| int32_t dest_y, |
| int32_t width, |
| int32_t height) |
| { |
| region->extents.x1 = dest_x; |
| region->extents.x2 = dest_x + width; |
| region->extents.y1 = dest_y; |
| region->extents.y2 = dest_y + height; |
| |
| region->extents.x1 = MAX (region->extents.x1, 0); |
| region->extents.y1 = MAX (region->extents.y1, 0); |
| region->extents.x2 = MIN (region->extents.x2, dst_image->bits.width); |
| region->extents.y2 = MIN (region->extents.y2, dst_image->bits.height); |
| |
| region->data = 0; |
| |
| /* Check for empty operation */ |
| if (region->extents.x1 >= region->extents.x2 || |
| region->extents.y1 >= region->extents.y2) |
| { |
| pixman_region32_init (region); |
| return FALSE; |
| } |
| |
| if (dst_image->common.have_clip_region) |
| { |
| if (!clip_general_image (region, &dst_image->common.clip_region, 0, 0)) |
| { |
| pixman_region32_fini (region); |
| return FALSE; |
| } |
| } |
| |
| if (dst_image->common.alpha_map && dst_image->common.alpha_map->common.have_clip_region) |
| { |
| if (!clip_general_image (region, &dst_image->common.alpha_map->common.clip_region, |
| -dst_image->common.alpha_origin_x, |
| -dst_image->common.alpha_origin_y)) |
| { |
| pixman_region32_fini (region); |
| return FALSE; |
| } |
| } |
| |
| /* clip against src */ |
| if (src_image->common.have_clip_region) |
| { |
| if (!clip_source_image (region, src_image, dest_x - src_x, dest_y - src_y)) |
| { |
| pixman_region32_fini (region); |
| return FALSE; |
| } |
| } |
| if (src_image->common.alpha_map && src_image->common.alpha_map->common.have_clip_region) |
| { |
| if (!clip_source_image (region, (pixman_image_t *)src_image->common.alpha_map, |
| dest_x - (src_x - src_image->common.alpha_origin_x), |
| dest_y - (src_y - src_image->common.alpha_origin_y))) |
| { |
| pixman_region32_fini (region); |
| return FALSE; |
| } |
| } |
| /* clip against mask */ |
| if (mask_image && mask_image->common.have_clip_region) |
| { |
| if (!clip_source_image (region, mask_image, dest_x - mask_x, dest_y - mask_y)) |
| { |
| pixman_region32_fini (region); |
| return FALSE; |
| } |
| if (mask_image->common.alpha_map && mask_image->common.alpha_map->common.have_clip_region) |
| { |
| if (!clip_source_image (region, (pixman_image_t *)mask_image->common.alpha_map, |
| dest_x - (mask_x - mask_image->common.alpha_origin_x), |
| dest_y - (mask_y - mask_image->common.alpha_origin_y))) |
| { |
| pixman_region32_fini (region); |
| return FALSE; |
| } |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| static void |
| walk_region_internal (pixman_implementation_t *imp, |
| pixman_op_t op, |
| pixman_image_t * src_image, |
| pixman_image_t * mask_image, |
| pixman_image_t * dst_image, |
| int32_t src_x, |
| int32_t src_y, |
| int32_t mask_x, |
| int32_t mask_y, |
| int32_t dest_x, |
| int32_t dest_y, |
| int32_t width, |
| int32_t height, |
| pixman_bool_t src_repeat, |
| pixman_bool_t mask_repeat, |
| pixman_region32_t * region, |
| pixman_composite_func_t composite_rect) |
| { |
| int w, h, w_this, h_this; |
| int x_msk, y_msk, x_src, y_src, x_dst, y_dst; |
| int src_dy = src_y - dest_y; |
| int src_dx = src_x - dest_x; |
| int mask_dy = mask_y - dest_y; |
| int mask_dx = mask_x - dest_x; |
| const pixman_box32_t *pbox; |
| int n; |
| |
| pbox = pixman_region32_rectangles (region, &n); |
| |
| /* Fast path for non-repeating sources */ |
| if (!src_repeat && !mask_repeat) |
| { |
| while (n--) |
| { |
| (*composite_rect) (imp, op, |
| src_image, mask_image, dst_image, |
| pbox->x1 + src_dx, |
| pbox->y1 + src_dy, |
| pbox->x1 + mask_dx, |
| pbox->y1 + mask_dy, |
| pbox->x1, |
| pbox->y1, |
| pbox->x2 - pbox->x1, |
| pbox->y2 - pbox->y1); |
| |
| pbox++; |
| } |
| |
| return; |
| } |
| |
| while (n--) |
| { |
| h = pbox->y2 - pbox->y1; |
| y_src = pbox->y1 + src_dy; |
| y_msk = pbox->y1 + mask_dy; |
| y_dst = pbox->y1; |
| |
| while (h) |
| { |
| h_this = h; |
| w = pbox->x2 - pbox->x1; |
| x_src = pbox->x1 + src_dx; |
| x_msk = pbox->x1 + mask_dx; |
| x_dst = pbox->x1; |
| |
| if (mask_repeat) |
| { |
| y_msk = MOD (y_msk, mask_image->bits.height); |
| if (h_this > mask_image->bits.height - y_msk) |
| h_this = mask_image->bits.height - y_msk; |
| } |
| |
| if (src_repeat) |
| { |
| y_src = MOD (y_src, src_image->bits.height); |
| if (h_this > src_image->bits.height - y_src) |
| h_this = src_image->bits.height - y_src; |
| } |
| |
| while (w) |
| { |
| w_this = w; |
| |
| if (mask_repeat) |
| { |
| x_msk = MOD (x_msk, mask_image->bits.width); |
| if (w_this > mask_image->bits.width - x_msk) |
| w_this = mask_image->bits.width - x_msk; |
| } |
| |
| if (src_repeat) |
| { |
| x_src = MOD (x_src, src_image->bits.width); |
| if (w_this > src_image->bits.width - x_src) |
| w_this = src_image->bits.width - x_src; |
| } |
| |
| (*composite_rect) (imp, op, |
| src_image, mask_image, dst_image, |
| x_src, y_src, x_msk, y_msk, x_dst, y_dst, |
| w_this, h_this); |
| w -= w_this; |
| |
| x_src += w_this; |
| x_msk += w_this; |
| x_dst += w_this; |
| } |
| |
| h -= h_this; |
| y_src += h_this; |
| y_msk += h_this; |
| y_dst += h_this; |
| } |
| |
| pbox++; |
| } |
| } |
| |
| #define IS_16BIT(x) (((x) >= INT16_MIN) && ((x) <= INT16_MAX)) |
| |
| static force_inline uint32_t |
| compute_src_extents_flags (pixman_image_t *image, |
| pixman_box32_t *extents, |
| int x, |
| int y) |
| { |
| pixman_box16_t extents16; |
| uint32_t flags; |
| |
| flags = FAST_PATH_COVERS_CLIP; |
| |
| if (image->common.type != BITS) |
| return flags; |
| |
| if (image->common.repeat == PIXMAN_REPEAT_NONE && |
| (x > extents->x1 || y > extents->y1 || |
| x + image->bits.width < extents->x2 || |
| y + image->bits.height < extents->y2)) |
| { |
| flags &= ~FAST_PATH_COVERS_CLIP; |
| } |
| |
| if (IS_16BIT (extents->x1 - x) && |
| IS_16BIT (extents->y1 - y) && |
| IS_16BIT (extents->x2 - x) && |
| IS_16BIT (extents->y2 - y)) |
| { |
| extents16.x1 = extents->x1 - x; |
| extents16.y1 = extents->y1 - y; |
| extents16.x2 = extents->x2 - x; |
| extents16.y2 = extents->y2 - y; |
| |
| if (!image->common.transform || |
| pixman_transform_bounds (image->common.transform, &extents16)) |
| { |
| if (extents16.x1 >= 0 && extents16.y1 >= 0 && |
| extents16.x2 <= image->bits.width && |
| extents16.y2 <= image->bits.height) |
| { |
| flags |= FAST_PATH_SAMPLES_COVER_CLIP; |
| } |
| } |
| } |
| |
| if (IS_16BIT (extents->x1 - x - 1) && |
| IS_16BIT (extents->y1 - y - 1) && |
| IS_16BIT (extents->x2 - x + 1) && |
| IS_16BIT (extents->y2 - y + 1)) |
| { |
| extents16.x1 = extents->x1 - x - 1; |
| extents16.y1 = extents->y1 - y - 1; |
| extents16.x2 = extents->x2 - x + 1; |
| extents16.y2 = extents->y2 - y + 1; |
| |
| if (/* src space expanded by one in dest space fits in 16 bit */ |
| (!image->common.transform || |
| pixman_transform_bounds (image->common.transform, &extents16)) && |
| /* And src image size can be used as 16.16 fixed point */ |
| image->bits.width < 0x7fff && |
| image->bits.height < 0x7fff) |
| { |
| /* Then we're "16bit safe" */ |
| flags |= FAST_PATH_16BIT_SAFE; |
| } |
| } |
| |
| return flags; |
| } |
| |
| #define N_CACHED_FAST_PATHS 8 |
| |
| typedef struct |
| { |
| pixman_fast_path_t cache [N_CACHED_FAST_PATHS]; |
| } cache_t; |
| |
| PIXMAN_DEFINE_THREAD_LOCAL (cache_t, fast_path_cache); |
| |
| static void |
| do_composite (pixman_implementation_t *imp, |
| pixman_op_t op, |
| pixman_image_t *src, |
| pixman_image_t *mask, |
| pixman_image_t *dest, |
| int src_x, |
| int src_y, |
| int mask_x, |
| int mask_y, |
| int dest_x, |
| int dest_y, |
| int width, |
| int height) |
| { |
| pixman_format_code_t src_format, mask_format, dest_format; |
| uint32_t src_flags, mask_flags, dest_flags; |
| pixman_region32_t region; |
| pixman_box32_t *extents; |
| uint32_t *src_bits; |
| int src_dx, src_dy; |
| uint32_t *mask_bits; |
| int mask_dx, mask_dy; |
| uint32_t *dest_bits; |
| int dest_dx, dest_dy; |
| pixman_bool_t need_workaround; |
| const pixman_fast_path_t *info; |
| cache_t *cache; |
| int i; |
| |
| src_format = src->common.extended_format_code; |
| src_flags = src->common.flags; |
| |
| if (mask) |
| { |
| mask_format = mask->common.extended_format_code; |
| mask_flags = mask->common.flags; |
| } |
| else |
| { |
| mask_format = PIXMAN_null; |
| mask_flags = FAST_PATH_IS_OPAQUE; |
| } |
| |
| dest_format = dest->common.extended_format_code; |
| dest_flags = dest->common.flags; |
| |
| /* Check for pixbufs */ |
| if ((mask_format == PIXMAN_a8r8g8b8 || mask_format == PIXMAN_a8b8g8r8) && |
| (src->type == BITS && src->bits.bits == mask->bits.bits) && |
| (src->common.repeat == mask->common.repeat) && |
| (src_x == mask_x && src_y == mask_y)) |
| { |
| if (src_format == PIXMAN_x8b8g8r8) |
| src_format = mask_format = PIXMAN_pixbuf; |
| else if (src_format == PIXMAN_x8r8g8b8) |
| src_format = mask_format = PIXMAN_rpixbuf; |
| } |
| |
| /* Check for workaround */ |
| need_workaround = (src_flags | mask_flags | dest_flags) & FAST_PATH_NEEDS_WORKAROUND; |
| |
| if (need_workaround) |
| { |
| apply_workaround (src, &src_x, &src_y, &src_bits, &src_dx, &src_dy); |
| apply_workaround (mask, &mask_x, &mask_y, &mask_bits, &mask_dx, &mask_dy); |
| apply_workaround (dest, &dest_x, &dest_y, &dest_bits, &dest_dx, &dest_dy); |
| } |
| |
| pixman_region32_init (®ion); |
| |
| if (!pixman_compute_composite_region32 ( |
| ®ion, src, mask, dest, |
| src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height)) |
| { |
| goto out; |
| } |
| |
| extents = pixman_region32_extents (®ion); |
| |
| src_flags |= compute_src_extents_flags (src, extents, dest_x - src_x, dest_y - src_y); |
| |
| if (mask) |
| mask_flags |= compute_src_extents_flags (mask, extents, dest_x - mask_x, dest_y - mask_y); |
| |
| /* |
| * Check if we can replace our operator by a simpler one |
| * if the src or dest are opaque. The output operator should be |
| * mathematically equivalent to the source. |
| */ |
| op = optimize_operator (op, src_flags, mask_flags, dest_flags); |
| if (op == PIXMAN_OP_DST) |
| goto out; |
| |
| /* Check cache for fast paths */ |
| cache = PIXMAN_GET_THREAD_LOCAL (fast_path_cache); |
| |
| for (i = 0; i < N_CACHED_FAST_PATHS; ++i) |
| { |
| info = &(cache->cache[i]); |
| |
| /* Note that we check for equality here, not whether |
| * the cached fast path matches. This is to prevent |
| * us from selecting an overly general fast path |
| * when a more specific one would work. |
| */ |
| if (info->op == op && |
| info->src_format == src_format && |
| info->mask_format == mask_format && |
| info->dest_format == dest_format && |
| info->src_flags == src_flags && |
| info->mask_flags == mask_flags && |
| info->dest_flags == dest_flags && |
| info->func) |
| { |
| goto found; |
| } |
| } |
| |
| while (imp) |
| { |
| info = imp->fast_paths; |
| |
| while (info->op != PIXMAN_OP_NONE) |
| { |
| if ((info->op == op || info->op == PIXMAN_OP_any) && |
| /* Formats */ |
| ((info->src_format == src_format) || |
| (info->src_format == PIXMAN_any)) && |
| ((info->mask_format == mask_format) || |
| (info->mask_format == PIXMAN_any)) && |
| ((info->dest_format == dest_format) || |
| (info->dest_format == PIXMAN_any)) && |
| /* Flags */ |
| (info->src_flags & src_flags) == info->src_flags && |
| (info->mask_flags & mask_flags) == info->mask_flags && |
| (info->dest_flags & dest_flags) == info->dest_flags) |
| { |
| /* Set i to the last spot in the cache so that the |
| * move-to-front code below will work |
| */ |
| i = N_CACHED_FAST_PATHS - 1; |
| |
| goto found; |
| } |
| |
| ++info; |
| } |
| |
| imp = imp->delegate; |
| } |
| |
| /* We didn't find a compositing routine. This should not happen, but if |
| * it somehow does, just exit rather than crash. |
| */ |
| goto out; |
| |
| found: |
| walk_region_internal (imp, op, |
| src, mask, dest, |
| src_x, src_y, mask_x, mask_y, |
| dest_x, dest_y, |
| width, height, |
| (src_flags & FAST_PATH_SIMPLE_REPEAT), |
| (mask_flags & FAST_PATH_SIMPLE_REPEAT), |
| ®ion, info->func); |
| |
| if (i) |
| { |
| /* Make a copy of info->func, because info->func may change when |
| * we update the cache. |
| */ |
| pixman_composite_func_t func = info->func; |
| |
| while (i--) |
| cache->cache[i + 1] = cache->cache[i]; |
| |
| cache->cache[0].op = op; |
| cache->cache[0].src_format = src_format; |
| cache->cache[0].src_flags = src_flags; |
| cache->cache[0].mask_format = mask_format; |
| cache->cache[0].mask_flags = mask_flags; |
| cache->cache[0].dest_format = dest_format; |
| cache->cache[0].dest_flags = dest_flags; |
| cache->cache[0].func = func; |
| } |
| |
| out: |
| if (need_workaround) |
| { |
| unapply_workaround (src, src_bits, src_dx, src_dy); |
| unapply_workaround (mask, mask_bits, mask_dx, mask_dy); |
| unapply_workaround (dest, dest_bits, dest_dx, dest_dy); |
| } |
| |
| pixman_region32_fini (®ion); |
| } |
| |
| PIXMAN_EXPORT void |
| pixman_image_composite (pixman_op_t op, |
| pixman_image_t * src, |
| pixman_image_t * mask, |
| pixman_image_t * dest, |
| int16_t src_x, |
| int16_t src_y, |
| int16_t mask_x, |
| int16_t mask_y, |
| int16_t dest_x, |
| int16_t dest_y, |
| uint16_t width, |
| uint16_t height) |
| { |
| pixman_image_composite32 (op, src, mask, dest, src_x, src_y, |
| mask_x, mask_y, dest_x, dest_y, width, height); |
| } |
| |
| /* |
| * Work around GCC bug causing crashes in Mozilla with SSE2 |
| * |
| * When using -msse, gcc generates movdqa instructions assuming that |
| * the stack is 16 byte aligned. Unfortunately some applications, such |
| * as Mozilla and Mono, end up aligning the stack to 4 bytes, which |
| * causes the movdqa instructions to fail. |
| * |
| * The __force_align_arg_pointer__ makes gcc generate a prologue that |
| * realigns the stack pointer to 16 bytes. |
| * |
| * On x86-64 this is not necessary because the standard ABI already |
| * calls for a 16 byte aligned stack. |
| * |
| * See https://bugs.freedesktop.org/show_bug.cgi?id=15693 |
| */ |
| #if defined (USE_SSE2) && defined(__GNUC__) && !defined(__x86_64__) && !defined(__amd64__) |
| __attribute__((__force_align_arg_pointer__)) |
| #endif |
| PIXMAN_EXPORT void |
| pixman_image_composite32 (pixman_op_t op, |
| pixman_image_t * src, |
| pixman_image_t * mask, |
| pixman_image_t * dest, |
| int32_t src_x, |
| int32_t src_y, |
| int32_t mask_x, |
| int32_t mask_y, |
| int32_t dest_x, |
| int32_t dest_y, |
| int32_t width, |
| int32_t height) |
| { |
| _pixman_image_validate (src); |
| if (mask) |
| _pixman_image_validate (mask); |
| _pixman_image_validate (dest); |
| |
| if (!imp) |
| imp = _pixman_choose_implementation (); |
| |
| do_composite (imp, op, |
| src, mask, dest, |
| src_x, src_y, |
| mask_x, mask_y, |
| dest_x, dest_y, |
| width, height); |
| } |
| |
| PIXMAN_EXPORT pixman_bool_t |
| pixman_blt (uint32_t *src_bits, |
| uint32_t *dst_bits, |
| int src_stride, |
| int dst_stride, |
| int src_bpp, |
| int dst_bpp, |
| int src_x, |
| int src_y, |
| int dst_x, |
| int dst_y, |
| int width, |
| int height) |
| { |
| if (!imp) |
| imp = _pixman_choose_implementation (); |
| |
| return _pixman_implementation_blt (imp, src_bits, dst_bits, src_stride, dst_stride, |
| src_bpp, dst_bpp, |
| src_x, src_y, |
| dst_x, dst_y, |
| width, height); |
| } |
| |
| PIXMAN_EXPORT pixman_bool_t |
| pixman_fill (uint32_t *bits, |
| int stride, |
| int bpp, |
| int x, |
| int y, |
| int width, |
| int height, |
| uint32_t xor) |
| { |
| if (!imp) |
| imp = _pixman_choose_implementation (); |
| |
| return _pixman_implementation_fill (imp, bits, stride, bpp, x, y, width, height, xor); |
| } |
| |
| static uint32_t |
| color_to_uint32 (const pixman_color_t *color) |
| { |
| return |
| (color->alpha >> 8 << 24) | |
| (color->red >> 8 << 16) | |
| (color->green & 0xff00) | |
| (color->blue >> 8); |
| } |
| |
| static pixman_bool_t |
| color_to_pixel (pixman_color_t * color, |
| uint32_t * pixel, |
| pixman_format_code_t format) |
| { |
| uint32_t c = color_to_uint32 (color); |
| |
| if (!(format == PIXMAN_a8r8g8b8 || |
| format == PIXMAN_x8r8g8b8 || |
| format == PIXMAN_a8b8g8r8 || |
| format == PIXMAN_x8b8g8r8 || |
| format == PIXMAN_b8g8r8a8 || |
| format == PIXMAN_b8g8r8x8 || |
| format == PIXMAN_r5g6b5 || |
| format == PIXMAN_b5g6r5 || |
| format == PIXMAN_a8)) |
| { |
| return FALSE; |
| } |
| |
| if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR) |
| { |
| c = ((c & 0xff000000) >> 0) | |
| ((c & 0x00ff0000) >> 16) | |
| ((c & 0x0000ff00) >> 0) | |
| ((c & 0x000000ff) << 16); |
| } |
| if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA) |
| { |
| c = ((c & 0xff000000) >> 24) | |
| ((c & 0x00ff0000) >> 8) | |
| ((c & 0x0000ff00) << 8) | |
| ((c & 0x000000ff) << 24); |
| } |
| |
| if (format == PIXMAN_a8) |
| c = c >> 24; |
| else if (format == PIXMAN_r5g6b5 || |
| format == PIXMAN_b5g6r5) |
| c = CONVERT_8888_TO_0565 (c); |
| |
| #if 0 |
| printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue); |
| printf ("pixel: %x\n", c); |
| #endif |
| |
| *pixel = c; |
| return TRUE; |
| } |
| |
| PIXMAN_EXPORT pixman_bool_t |
| pixman_image_fill_rectangles (pixman_op_t op, |
| pixman_image_t * dest, |
| pixman_color_t * color, |
| int n_rects, |
| const pixman_rectangle16_t *rects) |
| { |
| pixman_box32_t stack_boxes[6]; |
| pixman_box32_t *boxes; |
| pixman_bool_t result; |
| int i; |
| |
| if (n_rects > 6) |
| { |
| boxes = pixman_malloc_ab (sizeof (pixman_box32_t), n_rects); |
| if (boxes == NULL) |
| return FALSE; |
| } |
| else |
| { |
| boxes = stack_boxes; |
| } |
| |
| for (i = 0; i < n_rects; ++i) |
| { |
| boxes[i].x1 = rects[i].x; |
| boxes[i].y1 = rects[i].y; |
| boxes[i].x2 = boxes[i].x1 + rects[i].width; |
| boxes[i].y2 = boxes[i].y1 + rects[i].height; |
| } |
| |
| result = pixman_image_fill_boxes (op, dest, color, n_rects, boxes); |
| |
| if (boxes != stack_boxes) |
| free (boxes); |
| |
| return result; |
| } |
| |
| PIXMAN_EXPORT pixman_bool_t |
| pixman_image_fill_boxes (pixman_op_t op, |
| pixman_image_t * dest, |
| pixman_color_t * color, |
| int n_boxes, |
| const pixman_box32_t *boxes) |
| { |
| pixman_image_t *solid; |
| pixman_color_t c; |
| int i; |
| |
| _pixman_image_validate (dest); |
| |
| if (color->alpha == 0xffff) |
| { |
| if (op == PIXMAN_OP_OVER) |
| op = PIXMAN_OP_SRC; |
| } |
| |
| if (op == PIXMAN_OP_CLEAR) |
| { |
| c.red = 0; |
| c.green = 0; |
| c.blue = 0; |
| c.alpha = 0; |
| |
| color = &c; |
| |
| op = PIXMAN_OP_SRC; |
| } |
| |
| if (op == PIXMAN_OP_SRC) |
| { |
| uint32_t pixel; |
| |
| if (color_to_pixel (color, &pixel, dest->bits.format)) |
| { |
| pixman_region32_t fill_region; |
| int n_rects, j; |
| pixman_box32_t *rects; |
| |
| if (!pixman_region32_init_rects (&fill_region, boxes, n_boxes)) |
| return FALSE; |
| |
| if (dest->common.have_clip_region) |
| { |
| if (!pixman_region32_intersect (&fill_region, |
| &fill_region, |
| &dest->common.clip_region)) |
| return FALSE; |
| } |
| |
| rects = pixman_region32_rectangles (&fill_region, &n_rects); |
| for (j = 0; j < n_rects; ++j) |
| { |
| const pixman_box32_t *rect = &(rects[j]); |
| pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format), |
| rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1, |
| pixel); |
| } |
| |
| pixman_region32_fini (&fill_region); |
| return TRUE; |
| } |
| } |
| |
| solid = pixman_image_create_solid_fill (color); |
| if (!solid) |
| return FALSE; |
| |
| for (i = 0; i < n_boxes; ++i) |
| { |
| const pixman_box32_t *box = &(boxes[i]); |
| |
| pixman_image_composite32 (op, solid, NULL, dest, |
| 0, 0, 0, 0, |
| box->x1, box->y1, |
| box->x2 - box->x1, box->y2 - box->y1); |
| } |
| |
| pixman_image_unref (solid); |
| |
| return TRUE; |
| } |
| |
| /** |
| * pixman_version: |
| * |
| * Returns the version of the pixman library encoded in a single |
| * integer as per %PIXMAN_VERSION_ENCODE. The encoding ensures that |
| * later versions compare greater than earlier versions. |
| * |
| * A run-time comparison to check that pixman's version is greater than |
| * or equal to version X.Y.Z could be performed as follows: |
| * |
| * <informalexample><programlisting> |
| * if (pixman_version() >= PIXMAN_VERSION_ENCODE(X,Y,Z)) {...} |
| * </programlisting></informalexample> |
| * |
| * See also pixman_version_string() as well as the compile-time |
| * equivalents %PIXMAN_VERSION and %PIXMAN_VERSION_STRING. |
| * |
| * Return value: the encoded version. |
| **/ |
| PIXMAN_EXPORT int |
| pixman_version (void) |
| { |
| return PIXMAN_VERSION; |
| } |
| |
| /** |
| * pixman_version_string: |
| * |
| * Returns the version of the pixman library as a human-readable string |
| * of the form "X.Y.Z". |
| * |
| * See also pixman_version() as well as the compile-time equivalents |
| * %PIXMAN_VERSION_STRING and %PIXMAN_VERSION. |
| * |
| * Return value: a string containing the version. |
| **/ |
| PIXMAN_EXPORT const char* |
| pixman_version_string (void) |
| { |
| return PIXMAN_VERSION_STRING; |
| } |
| |
| /** |
| * pixman_format_supported_source: |
| * @format: A pixman_format_code_t format |
| * |
| * Return value: whether the provided format code is a supported |
| * format for a pixman surface used as a source in |
| * rendering. |
| * |
| * Currently, all pixman_format_code_t values are supported. |
| **/ |
| PIXMAN_EXPORT pixman_bool_t |
| pixman_format_supported_source (pixman_format_code_t format) |
| { |
| switch (format) |
| { |
| /* 32 bpp formats */ |
| case PIXMAN_a2b10g10r10: |
| case PIXMAN_x2b10g10r10: |
| case PIXMAN_a2r10g10b10: |
| case PIXMAN_x2r10g10b10: |
| case PIXMAN_a8r8g8b8: |
| case PIXMAN_x8r8g8b8: |
| case PIXMAN_a8b8g8r8: |
| case PIXMAN_x8b8g8r8: |
| case PIXMAN_b8g8r8a8: |
| case PIXMAN_b8g8r8x8: |
| case PIXMAN_r8g8b8: |
| case PIXMAN_b8g8r8: |
| case PIXMAN_r5g6b5: |
| case PIXMAN_b5g6r5: |
| /* 16 bpp formats */ |
| case PIXMAN_a1r5g5b5: |
| case PIXMAN_x1r5g5b5: |
| case PIXMAN_a1b5g5r5: |
| case PIXMAN_x1b5g5r5: |
| case PIXMAN_a4r4g4b4: |
| case PIXMAN_x4r4g4b4: |
| case PIXMAN_a4b4g4r4: |
| case PIXMAN_x4b4g4r4: |
| /* 8bpp formats */ |
| case PIXMAN_a8: |
| case PIXMAN_r3g3b2: |
| case PIXMAN_b2g3r3: |
| case PIXMAN_a2r2g2b2: |
| case PIXMAN_a2b2g2r2: |
| case PIXMAN_c8: |
| case PIXMAN_g8: |
| case PIXMAN_x4a4: |
| /* Collides with PIXMAN_c8 |
| case PIXMAN_x4c4: |
| */ |
| /* Collides with PIXMAN_g8 |
| case PIXMAN_x4g4: |
| */ |
| /* 4bpp formats */ |
| case PIXMAN_a4: |
| case PIXMAN_r1g2b1: |
| case PIXMAN_b1g2r1: |
| case PIXMAN_a1r1g1b1: |
| case PIXMAN_a1b1g1r1: |
| case PIXMAN_c4: |
| case PIXMAN_g4: |
| /* 1bpp formats */ |
| case PIXMAN_a1: |
| case PIXMAN_g1: |
| /* YUV formats */ |
| case PIXMAN_yuy2: |
| case PIXMAN_yv12: |
| return TRUE; |
| |
| default: |
| return FALSE; |
| } |
| } |
| |
| /** |
| * pixman_format_supported_destination: |
| * @format: A pixman_format_code_t format |
| * |
| * Return value: whether the provided format code is a supported |
| * format for a pixman surface used as a destination in |
| * rendering. |
| * |
| * Currently, all pixman_format_code_t values are supported |
| * except for the YUV formats. |
| **/ |
| PIXMAN_EXPORT pixman_bool_t |
| pixman_format_supported_destination (pixman_format_code_t format) |
| { |
| /* YUV formats cannot be written to at the moment */ |
| if (format == PIXMAN_yuy2 || format == PIXMAN_yv12) |
| return FALSE; |
| |
| return pixman_format_supported_source (format); |
| } |
| |
| PIXMAN_EXPORT pixman_bool_t |
| pixman_compute_composite_region (pixman_region16_t * region, |
| pixman_image_t * src_image, |
| pixman_image_t * mask_image, |
| pixman_image_t * dst_image, |
| int16_t src_x, |
| int16_t src_y, |
| int16_t mask_x, |
| int16_t mask_y, |
| int16_t dest_x, |
| int16_t dest_y, |
| uint16_t width, |
| uint16_t height) |
| { |
| pixman_region32_t r32; |
| pixman_bool_t retval; |
| |
| pixman_region32_init (&r32); |
| |
| retval = pixman_compute_composite_region32 ( |
| &r32, src_image, mask_image, dst_image, |
| src_x, src_y, mask_x, mask_y, dest_x, dest_y, |
| width, height); |
| |
| if (retval) |
| { |
| if (!pixman_region16_copy_from_region32 (region, &r32)) |
| retval = FALSE; |
| } |
| |
| pixman_region32_fini (&r32); |
| return retval; |
| } |