cairo_image_surface_t * _cairo_image_surface_map_to_image (void *abstract_other, const cairo_rectangle_int_t *extents) { cairo_image_surface_t *other = abstract_other; cairo_surface_t *surface; uint8_t *data; data = other->data; data += extents->y * other->stride; data += extents->x * PIXMAN_FORMAT_BPP (other->pixman_format)/ 8; surface = _cairo_image_surface_create_with_pixman_format (data, other->pixman_format, extents->width, extents->height, other->stride); cairo_surface_set_device_offset (surface, -extents->x, -extents->y); return (cairo_image_surface_t *) surface; }
pixman_image_t *alloc_lz_image_surface(LzDecodeUsrData *canvas_data, pixman_format_code_t pixman_format, int width, int height, int gross_pixels, int top_down) { int stride; pixman_image_t *surface = NULL; stride = (gross_pixels / height) * (PIXMAN_FORMAT_BPP (pixman_format) / 8); /* pixman requires strides to be 4-byte aligned */ stride = SPICE_ALIGN(stride, 4); if (!top_down) { stride = -stride; } surface = surface_create_stride( #ifdef WIN32 canvas_data->dc, #endif pixman_format, width, height, stride); canvas_data->out_surface = surface; return surface; }
/* * Composite operation with pseudorandom images */ uint32_t test_composite (int testnum, int verbose) { int i; pixman_image_t *src_img = NULL; pixman_image_t *dst_img = NULL; pixman_image_t *mask_img = NULL; int src_width, src_height; int dst_width, dst_height; int src_stride, dst_stride; int src_x, src_y; int dst_x, dst_y; int mask_x, mask_y; int w, h; pixman_op_t op; pixman_format_code_t src_fmt, dst_fmt, mask_fmt; uint32_t *dstbuf, *srcbuf, *maskbuf; uint32_t crc32; int max_width, max_height, max_extra_stride; FLOAT_REGS_CORRUPTION_DETECTOR_START (); max_width = max_height = 24 + testnum / 10000; max_extra_stride = 4 + testnum / 1000000; if (max_width > 256) max_width = 256; if (max_height > 16) max_height = 16; if (max_extra_stride > 8) max_extra_stride = 8; lcg_srand (testnum); op = op_list[lcg_rand_n (sizeof (op_list) / sizeof (op_list[0]))]; if (lcg_rand_n (8)) { /* normal image */ src_img = create_random_image (img_fmt_list, max_width, max_height, max_extra_stride, &src_fmt); } else { /* solid case */ src_img = create_random_image (img_fmt_list, 1, 1, max_extra_stride, &src_fmt); pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL); } dst_img = create_random_image (img_fmt_list, max_width, max_height, max_extra_stride, &dst_fmt); src_width = pixman_image_get_width (src_img); src_height = pixman_image_get_height (src_img); src_stride = pixman_image_get_stride (src_img); dst_width = pixman_image_get_width (dst_img); dst_height = pixman_image_get_height (dst_img); dst_stride = pixman_image_get_stride (dst_img); dstbuf = pixman_image_get_data (dst_img); srcbuf = pixman_image_get_data (src_img); src_x = lcg_rand_n (src_width); src_y = lcg_rand_n (src_height); dst_x = lcg_rand_n (dst_width); dst_y = lcg_rand_n (dst_height); mask_img = NULL; mask_fmt = PIXMAN_null; mask_x = 0; mask_y = 0; maskbuf = NULL; if ((src_fmt == PIXMAN_x8r8g8b8 || src_fmt == PIXMAN_x8b8g8r8) && (lcg_rand_n (4) == 0)) { /* PIXBUF */ mask_fmt = lcg_rand_n (2) ? PIXMAN_a8r8g8b8 : PIXMAN_a8b8g8r8; mask_img = pixman_image_create_bits (mask_fmt, src_width, src_height, srcbuf, src_stride); mask_x = src_x; mask_y = src_y; maskbuf = srcbuf; } else if (lcg_rand_n (2)) { if (lcg_rand_n (2)) { mask_img = create_random_image (mask_fmt_list, max_width, max_height, max_extra_stride, &mask_fmt); } else { /* solid case */ mask_img = create_random_image (mask_fmt_list, 1, 1, max_extra_stride, &mask_fmt); pixman_image_set_repeat (mask_img, PIXMAN_REPEAT_NORMAL); } if (lcg_rand_n (2)) pixman_image_set_component_alpha (mask_img, 1); mask_x = lcg_rand_n (pixman_image_get_width (mask_img)); mask_y = lcg_rand_n (pixman_image_get_height (mask_img)); } w = lcg_rand_n (dst_width - dst_x + 1); h = lcg_rand_n (dst_height - dst_y + 1); if (verbose) { printf ("op=%d, src_fmt=%08X, dst_fmt=%08X, mask_fmt=%08X\n", op, src_fmt, dst_fmt, mask_fmt); printf ("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n", src_width, src_height, dst_width, dst_height); printf ("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n", src_x, src_y, dst_x, dst_y); printf ("src_stride=%d, dst_stride=%d\n", src_stride, dst_stride); printf ("w=%d, h=%d\n", w, h); } pixman_image_composite (op, src_img, mask_img, dst_img, src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h); if (verbose) { int j; printf ("---\n"); for (i = 0; i < dst_height; i++) { for (j = 0; j < dst_stride; j++) { if (j == (dst_width * PIXMAN_FORMAT_BPP (dst_fmt) + 7) / 8) printf ("| "); printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j)); } printf ("\n"); } printf ("---\n"); } free_random_image (0, src_img, PIXMAN_null); crc32 = free_random_image (0, dst_img, dst_fmt); if (mask_img) { if (srcbuf == maskbuf) pixman_image_unref(mask_img); else free_random_image (0, mask_img, PIXMAN_null); } FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); return crc32; }
/* * Composite operation with pseudorandom images */ uint32_t test_composite (int testnum, int verbose) { int i; pixman_image_t * src_img; pixman_image_t * dst_img; pixman_region16_t clip; int dst_width, dst_height; int dst_stride; int dst_x, dst_y; int dst_bpp; pixman_op_t op; uint32_t * dst_bits; uint32_t crc32; pixman_format_code_t mask_format, dst_format; pixman_trapezoid_t *traps; int src_x, src_y; int n_traps; static pixman_color_t colors[] = { { 0xffff, 0xffff, 0xffff, 0xffff }, { 0x0000, 0x0000, 0x0000, 0x0000 }, { 0xabcd, 0xabcd, 0x0000, 0xabcd }, { 0x0000, 0x0000, 0x0000, 0xffff }, { 0x0101, 0x0101, 0x0101, 0x0101 }, { 0x7777, 0x6666, 0x5555, 0x9999 }, }; FLOAT_REGS_CORRUPTION_DETECTOR_START (); lcg_srand (testnum); op = RANDOM_ELT (operators); mask_format = RANDOM_ELT (mask_formats); /* Create source image */ if (lcg_rand_n (4) == 0) { src_img = pixman_image_create_solid_fill ( &(colors[lcg_rand_n (ARRAY_LENGTH (colors))])); src_x = 10; src_y = 234; } else { pixman_format_code_t src_format = RANDOM_ELT(formats); int src_bpp = (PIXMAN_FORMAT_BPP (src_format) + 7) / 8; int src_width = lcg_rand_n (MAX_SRC_WIDTH) + 1; int src_height = lcg_rand_n (MAX_SRC_HEIGHT) + 1; int src_stride = src_width * src_bpp + lcg_rand_n (MAX_STRIDE) * src_bpp; uint32_t *bits; src_x = -(src_width / 4) + lcg_rand_n (src_width * 3 / 2); src_y = -(src_height / 4) + lcg_rand_n (src_height * 3 / 2); src_stride = (src_stride + 3) & ~3; bits = (uint32_t *)make_random_bytes (src_stride * src_height); src_img = pixman_image_create_bits ( src_format, src_width, src_height, bits, src_stride); pixman_image_set_destroy_function (src_img, destroy_bits, bits); if (lcg_rand_n (8) == 0) { pixman_box16_t clip_boxes[2]; int n = lcg_rand_n (2) + 1; for (i = 0; i < n; i++) { clip_boxes[i].x1 = lcg_rand_n (src_width); clip_boxes[i].y1 = lcg_rand_n (src_height); clip_boxes[i].x2 = clip_boxes[i].x1 + lcg_rand_n (src_width - clip_boxes[i].x1); clip_boxes[i].y2 = clip_boxes[i].y1 + lcg_rand_n (src_height - clip_boxes[i].y1); if (verbose) { printf ("source clip box: [%d,%d-%d,%d]\n", clip_boxes[i].x1, clip_boxes[i].y1, clip_boxes[i].x2, clip_boxes[i].y2); } } pixman_region_init_rects (&clip, clip_boxes, n); pixman_image_set_clip_region (src_img, &clip); pixman_image_set_source_clipping (src_img, 1); pixman_region_fini (&clip); } image_endian_swap (src_img); } /* Create destination image */ { dst_format = RANDOM_ELT(formats); dst_bpp = (PIXMAN_FORMAT_BPP (dst_format) + 7) / 8; dst_width = lcg_rand_n (MAX_DST_WIDTH) + 1; dst_height = lcg_rand_n (MAX_DST_HEIGHT) + 1; dst_stride = dst_width * dst_bpp + lcg_rand_n (MAX_STRIDE) * dst_bpp; dst_stride = (dst_stride + 3) & ~3; dst_bits = (uint32_t *)make_random_bytes (dst_stride * dst_height); dst_x = -(dst_width / 4) + lcg_rand_n (dst_width * 3 / 2); dst_y = -(dst_height / 4) + lcg_rand_n (dst_height * 3 / 2); dst_img = pixman_image_create_bits ( dst_format, dst_width, dst_height, dst_bits, dst_stride); image_endian_swap (dst_img); } /* Create traps */ { int i; n_traps = lcg_rand_n (25); traps = fence_malloc (n_traps * sizeof (pixman_trapezoid_t)); for (i = 0; i < n_traps; ++i) { pixman_trapezoid_t *t = &(traps[i]); t->top = random_fixed (MAX_DST_HEIGHT) - MAX_DST_HEIGHT / 2; t->bottom = t->top + random_fixed (MAX_DST_HEIGHT); t->left.p1.x = random_fixed (MAX_DST_WIDTH) - MAX_DST_WIDTH / 2; t->left.p1.y = t->top - random_fixed (50); t->left.p2.x = random_fixed (MAX_DST_WIDTH) - MAX_DST_WIDTH / 2; t->left.p2.y = t->bottom + random_fixed (50); t->right.p1.x = t->left.p1.x + random_fixed (MAX_DST_WIDTH); t->right.p1.y = t->top - random_fixed (50); t->right.p2.x = t->left.p2.x + random_fixed (MAX_DST_WIDTH); t->right.p2.y = t->bottom - random_fixed (50); } } if (lcg_rand_n (8) == 0) { pixman_box16_t clip_boxes[2]; int n = lcg_rand_n (2) + 1; for (i = 0; i < n; i++) { clip_boxes[i].x1 = lcg_rand_n (dst_width); clip_boxes[i].y1 = lcg_rand_n (dst_height); clip_boxes[i].x2 = clip_boxes[i].x1 + lcg_rand_n (dst_width - clip_boxes[i].x1); clip_boxes[i].y2 = clip_boxes[i].y1 + lcg_rand_n (dst_height - clip_boxes[i].y1); if (verbose) { printf ("destination clip box: [%d,%d-%d,%d]\n", clip_boxes[i].x1, clip_boxes[i].y1, clip_boxes[i].x2, clip_boxes[i].y2); } } pixman_region_init_rects (&clip, clip_boxes, n); pixman_image_set_clip_region (dst_img, &clip); pixman_region_fini (&clip); } pixman_composite_trapezoids (op, src_img, dst_img, mask_format, src_x, src_y, dst_x, dst_y, n_traps, traps); if (dst_format == PIXMAN_x8r8g8b8) { /* ignore unused part */ for (i = 0; i < dst_stride * dst_height / 4; i++) dst_bits[i] &= 0xFFFFFF; } image_endian_swap (dst_img); if (verbose) { int j; for (i = 0; i < dst_height; i++) { for (j = 0; j < dst_stride; j++) printf ("%02X ", *((uint8_t *)dst_bits + i * dst_stride + j)); printf ("\n"); } } crc32 = compute_crc32 (0, dst_bits, dst_stride * dst_height); fence_free (dst_bits); pixman_image_unref (src_img); pixman_image_unref (dst_img); fence_free (traps); FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); return crc32; }
static cairo_surface_t * _get_image (cairo_xcb_surface_t *surface, cairo_bool_t use_shm, int x, int y, int width, int height) { cairo_surface_t *image; cairo_xcb_connection_t *connection; xcb_get_image_reply_t *reply; cairo_int_status_t status; assert (surface->fallback == NULL); assert (x >= 0); assert (y >= 0); assert (x + width <= surface->width); assert (y + height <= surface->height); if (surface->deferred_clear) { image = _cairo_image_surface_create_with_pixman_format (NULL, surface->pixman_format, width, height, 0); if (surface->deferred_clear_color.alpha_short > 0x00ff) { cairo_solid_pattern_t solid; _cairo_pattern_init_solid (&solid, &surface->deferred_clear_color); status = _cairo_surface_paint (image, CAIRO_OPERATOR_SOURCE, &solid.base, NULL); if (unlikely (status)) { cairo_surface_destroy (image); image = _cairo_surface_create_in_error (status); } } return image; } connection = surface->connection; status = _cairo_xcb_connection_acquire (connection); if (unlikely (status)) return _cairo_surface_create_in_error (status); if (use_shm) { image = _get_shm_image (surface, x, y, width, height); if (image) { if (image->status) { _cairo_xcb_connection_release (connection); return image; } cairo_surface_destroy (image); } } status = _cairo_xcb_connection_get_image (connection, surface->drawable, x, y, width, height, &reply); if (unlikely (status)) goto FAIL; if (reply == NULL && ! surface->owns_pixmap) { /* xcb_get_image_t from a window is dangerous because it can * produce errors if the window is unmapped or partially * outside the screen. We could check for errors and * retry, but to keep things simple, we just create a * temporary pixmap * * If we hit this fallback too often, we should remember so and * skip the round-trip from the above GetImage request, * similar to what cairo-xlib does. */ xcb_pixmap_t pixmap; xcb_gcontext_t gc; gc = _cairo_xcb_screen_get_gc (surface->screen, surface->drawable, surface->depth); pixmap = _cairo_xcb_connection_create_pixmap (connection, surface->depth, surface->drawable, width, height); /* XXX IncludeInferiors? */ _cairo_xcb_connection_copy_area (connection, surface->drawable, pixmap, gc, x, y, 0, 0, width, height); _cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc); status = _cairo_xcb_connection_get_image (connection, pixmap, 0, 0, width, height, &reply); _cairo_xcb_connection_free_pixmap (connection, pixmap); if (unlikely (status)) goto FAIL; } if (unlikely (reply == NULL)) { status = _cairo_error (CAIRO_STATUS_NO_MEMORY); goto FAIL; } /* XXX byte swap */ /* XXX format conversion */ assert (reply->depth == surface->depth); image = _cairo_image_surface_create_with_pixman_format (xcb_get_image_data (reply), surface->pixman_format, width, height, CAIRO_STRIDE_FOR_WIDTH_BPP (width, PIXMAN_FORMAT_BPP (surface->pixman_format))); status = image->status; if (unlikely (status)) { free (reply); goto FAIL; } /* XXX */ pixman_image_set_destroy_function (((cairo_image_surface_t *)image)->pixman_image, _destroy_image, reply); _cairo_xcb_connection_release (connection); return image; FAIL: _cairo_xcb_connection_release (connection); return _cairo_surface_create_in_error (status); }
/* Create random image for testing purposes */ static pixman_image_t * create_random_image (pixman_format_code_t *allowed_formats, int max_width, int max_height, int max_extra_stride, pixman_format_code_t *used_fmt) { int n = 0, width, height, stride; pixman_format_code_t fmt; uint32_t *buf; pixman_image_t *img; while (allowed_formats[n] != PIXMAN_null) n++; if (n > N_MOST_LIKELY_FORMATS && prng_rand_n (4) != 0) n = N_MOST_LIKELY_FORMATS; fmt = allowed_formats[prng_rand_n (n)]; width = prng_rand_n (max_width) + 1; height = prng_rand_n (max_height) + 1; stride = (width * PIXMAN_FORMAT_BPP (fmt) + 7) / 8 + prng_rand_n (max_extra_stride + 1); stride = (stride + 3) & ~3; /* do the allocation */ buf = aligned_malloc (64, stride * height); if (prng_rand_n (4) == 0) { /* uniform distribution */ prng_randmemset (buf, stride * height, 0); } else { /* significantly increased probability for 0x00 and 0xFF */ prng_randmemset (buf, stride * height, RANDMEMSET_MORE_00_AND_FF); } /* test negative stride */ if (prng_rand_n (4) == 0) { buf += (stride / 4) * (height - 1); stride = - stride; } img = pixman_image_create_bits (fmt, width, height, buf, stride); if (PIXMAN_FORMAT_TYPE (fmt) == PIXMAN_TYPE_COLOR) { pixman_image_set_indexed (img, &(rgb_palette[PIXMAN_FORMAT_BPP (fmt)])); } else if (PIXMAN_FORMAT_TYPE (fmt) == PIXMAN_TYPE_GRAY) { pixman_image_set_indexed (img, &(y_palette[PIXMAN_FORMAT_BPP (fmt)])); } if (prng_rand_n (16) == 0) pixman_image_set_filter (img, PIXMAN_FILTER_BILINEAR, NULL, 0); image_endian_swap (img); if (used_fmt) *used_fmt = fmt; return img; }
cairo_status_t _cairo_gl_surface_draw_image (cairo_gl_surface_t *dst, cairo_image_surface_t *src, int src_x, int src_y, int width, int height, int dst_x, int dst_y) { GLenum internal_format, format, type; cairo_bool_t has_alpha, needs_swap; cairo_image_surface_t *clone = NULL; cairo_gl_context_t *ctx; int cpp; cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS; status = _cairo_gl_context_acquire (dst->base.device, &ctx); if (unlikely (status)) return status; if (! _cairo_gl_get_image_format_and_type (ctx->gl_flavor, src->pixman_format, &internal_format, &format, &type, &has_alpha, &needs_swap)) { cairo_bool_t is_supported; clone = _cairo_image_surface_coerce (src); if (unlikely (status = clone->base.status)) goto FAIL; is_supported = _cairo_gl_get_image_format_and_type (ctx->gl_flavor, clone->pixman_format, &internal_format, &format, &type, &has_alpha, &needs_swap); assert (is_supported); assert (!needs_swap); src = clone; } cpp = PIXMAN_FORMAT_BPP (src->pixman_format) / 8; status = _cairo_gl_surface_flush (&dst->base); if (unlikely (status)) goto FAIL; if (_cairo_gl_surface_is_texture (dst)) { void *data_start = src->data + src_y * src->stride + src_x * cpp; void *data_start_gles2 = NULL; /* * Due to GL_UNPACK_ROW_LENGTH missing in GLES2 we have to extract the * image data ourselves in some cases. In particular, we must extract * the pixels if: * a. we don't want full-length lines or * b. the row stride cannot be handled by GL itself using a 4 byte * alignment constraint */ if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES && (src->width * cpp < src->stride - 3 || width != src->width)) { glPixelStorei (GL_UNPACK_ALIGNMENT, 1); status = _cairo_gl_surface_extract_image_data (src, src_x, src_y, width, height, &data_start_gles2); if (unlikely (status)) goto FAIL; data_start = data_start_gles2; } else { glPixelStorei (GL_UNPACK_ALIGNMENT, 4); if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP) glPixelStorei (GL_UNPACK_ROW_LENGTH, src->stride / cpp); } _cairo_gl_context_activate (ctx, CAIRO_GL_TEX_TEMP); glBindTexture (ctx->tex_target, dst->tex); glTexParameteri (ctx->tex_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri (ctx->tex_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexSubImage2D (ctx->tex_target, 0, dst_x, dst_y, width, height, format, type, data_start); free (data_start_gles2); /* If we just treated some rgb-only data as rgba, then we have to * go back and fix up the alpha channel where we filled in this * texture data. */ if (!has_alpha) { _cairo_gl_surface_fill_alpha_channel (dst, ctx, dst_x, dst_y, width, height); } } else { cairo_surface_t *tmp; tmp = _cairo_gl_surface_create_scratch (ctx, dst->base.content, width, height); if (unlikely (tmp->status)) goto FAIL; status = _cairo_gl_surface_draw_image ((cairo_gl_surface_t *) tmp, src, src_x, src_y, width, height, 0, 0); if (status == CAIRO_INT_STATUS_SUCCESS) { cairo_surface_pattern_t tmp_pattern; cairo_rectangle_int_t r; cairo_clip_t *clip; _cairo_pattern_init_for_surface (&tmp_pattern, tmp); cairo_matrix_init_translate (&tmp_pattern.base.matrix, -dst_x, -dst_y); tmp_pattern.base.filter = CAIRO_FILTER_NEAREST; tmp_pattern.base.extend = CAIRO_EXTEND_NONE; r.x = dst_x; r.y = dst_y; r.width = width; r.height = height; clip = _cairo_clip_intersect_rectangle (NULL, &r); status = _cairo_surface_paint (&dst->base, CAIRO_OPERATOR_SOURCE, &tmp_pattern.base, clip); _cairo_clip_destroy (clip); _cairo_pattern_fini (&tmp_pattern.base); } cairo_surface_destroy (tmp); } FAIL: status = _cairo_gl_context_release (ctx, status); if (clone) cairo_surface_destroy (&clone->base); return status; }
static force_inline void bits_image_fetch_bilinear_affine (pixman_image_t * image, int offset, int line, int width, uint32_t * buffer, const uint32_t * mask, convert_pixel_t convert_pixel, pixman_format_code_t format, pixman_repeat_t repeat_mode) { pixman_fixed_t x, y; pixman_fixed_t ux, uy; pixman_vector_t v; bits_image_t *bits = &image->bits; int i; /* reference point is the center of the pixel */ v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2; v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2; v.vector[2] = pixman_fixed_1; if (!pixman_transform_point_3d (image->common.transform, &v)) return; ux = image->common.transform->matrix[0][0]; uy = image->common.transform->matrix[1][0]; x = v.vector[0]; y = v.vector[1]; for (i = 0; i < width; ++i) { int x1, y1, x2, y2; uint32_t tl, tr, bl, br; int32_t distx, disty; int width = image->bits.width; int height = image->bits.height; const uint8_t *row1; const uint8_t *row2; if (mask && !mask[i]) goto next; x1 = x - pixman_fixed_1 / 2; y1 = y - pixman_fixed_1 / 2; distx = pixman_fixed_to_bilinear_weight (x1); disty = pixman_fixed_to_bilinear_weight (y1); y1 = pixman_fixed_to_int (y1); y2 = y1 + 1; x1 = pixman_fixed_to_int (x1); x2 = x1 + 1; if (repeat_mode != PIXMAN_REPEAT_NONE) { uint32_t mask; mask = PIXMAN_FORMAT_A (format)? 0 : 0xff000000; repeat (repeat_mode, &x1, width); repeat (repeat_mode, &y1, height); repeat (repeat_mode, &x2, width); repeat (repeat_mode, &y2, height); row1 = (uint8_t *)bits->bits + bits->rowstride * 4 * y1; row2 = (uint8_t *)bits->bits + bits->rowstride * 4 * y2; tl = convert_pixel (row1, x1) | mask; tr = convert_pixel (row1, x2) | mask; bl = convert_pixel (row2, x1) | mask; br = convert_pixel (row2, x2) | mask; } else { uint32_t mask1, mask2; int bpp; /* Note: PIXMAN_FORMAT_BPP() returns an unsigned value, * which means if you use it in expressions, those * expressions become unsigned themselves. Since * the variables below can be negative in some cases, * that will lead to crashes on 64 bit architectures. * * So this line makes sure bpp is signed */ bpp = PIXMAN_FORMAT_BPP (format); if (x1 >= width || x2 < 0 || y1 >= height || y2 < 0) { buffer[i] = 0; goto next; } if (y2 == 0) { row1 = zero; mask1 = 0; } else { row1 = (uint8_t *)bits->bits + bits->rowstride * 4 * y1; row1 += bpp / 8 * x1; mask1 = PIXMAN_FORMAT_A (format)? 0 : 0xff000000; } if (y1 == height - 1) { row2 = zero; mask2 = 0; } else { row2 = (uint8_t *)bits->bits + bits->rowstride * 4 * y2; row2 += bpp / 8 * x1; mask2 = PIXMAN_FORMAT_A (format)? 0 : 0xff000000; } if (x2 == 0) { tl = 0; bl = 0; } else { tl = convert_pixel (row1, 0) | mask1; bl = convert_pixel (row2, 0) | mask2; } if (x1 == width - 1) { tr = 0; br = 0; } else { tr = convert_pixel (row1, 1) | mask1; br = convert_pixel (row2, 1) | mask2; } } buffer[i] = bilinear_interpolation ( tl, tr, bl, br, distx, disty); next: x += ux; y += uy; } }
static void uxa_check_glyphs(CARD8 op, PicturePtr src, PicturePtr dst, PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int nlist, GlyphListPtr list, GlyphPtr * glyphs) { pixman_image_t *image; PixmapPtr scratch; PicturePtr mask, mask_src = NULL, mask_dst = NULL, white = NULL; int width = 0, height = 0; int x, y, n; int xDst = list->xOff, yDst = list->yOff; BoxRec extents = { 0, 0, 0, 0 }; CARD8 mask_op = 0; if (maskFormat) { pixman_format_code_t format; CARD32 component_alpha; xRenderColor color; int error; uxa_glyph_extents(nlist, list, glyphs, &extents); if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1) return; width = extents.x2 - extents.x1; height = extents.y2 - extents.y1; format = maskFormat->format | (BitsPerPixel(maskFormat->depth) << 24); image = pixman_image_create_bits(format, width, height, NULL, 0); if (!image) return; scratch = GetScratchPixmapHeader(dst->pDrawable->pScreen, width, height, PIXMAN_FORMAT_DEPTH(format), PIXMAN_FORMAT_BPP(format), pixman_image_get_stride(image), pixman_image_get_data(image)); if (!scratch) { pixman_image_unref(image); return; } component_alpha = NeedsComponent(maskFormat->format); mask = CreatePicture(0, &scratch->drawable, maskFormat, CPComponentAlpha, &component_alpha, serverClient, &error); if (!mask) { FreeScratchPixmapHeader(scratch); pixman_image_unref(image); return; } ValidatePicture(mask); x = -extents.x1; y = -extents.y1; color.red = color.green = color.blue = color.alpha = 0xffff; white = CreateSolidPicture(0, &color, &error); mask_op = op; op = PictOpAdd; mask_src = src; src = white; mask_dst = dst; dst = mask; } else { mask = dst; x = 0; y = 0; } while (nlist--) { x += list->xOff; y += list->yOff; n = list->len; while (n--) { GlyphPtr glyph = *glyphs++; PicturePtr g = GetGlyphPicture(glyph, dst->pDrawable->pScreen); if (g) { CompositePicture(op, src, g, dst, xSrc + (x - glyph->info.x) - xDst, ySrc + (y - glyph->info.y) - yDst, 0, 0, x - glyph->info.x, y - glyph->info.y, glyph->info.width, glyph->info.height); } x += glyph->info.xOff; y += glyph->info.yOff; } list++; } if (white) FreePicture(white, 0); if (maskFormat) { x = extents.x1; y = extents.y1; CompositePicture(mask_op, mask_src, mask, mask_dst, xSrc + x - xDst, ySrc + y - yDst, 0, 0, x, y, width, height); FreePicture(mask, 0); FreeScratchPixmapHeader(scratch); pixman_image_unref(image); } }
static cairo_status_t _cairo_xcb_shm_image_create (cairo_xcb_connection_t *connection, pixman_format_code_t pixman_format, int width, int height, cairo_image_surface_t **image_out, cairo_xcb_shm_info_t **shm_info_out) { cairo_surface_t *image = NULL; cairo_xcb_shm_info_t *shm_info = NULL; cairo_status_t status; #if CAIRO_HAS_XCB_SHM_FUNCTIONS if ((connection->flags & CAIRO_XCB_HAS_SHM)) { size_t size, stride; stride = CAIRO_STRIDE_FOR_WIDTH_BPP (width, PIXMAN_FORMAT_BPP (pixman_format)); size = stride * height; if (size > CAIRO_XCB_SHM_SMALL_IMAGE) { status = _cairo_xcb_connection_allocate_shm_info (connection, size, &shm_info); if (unlikely (status)) return status; image = _cairo_image_surface_create_with_pixman_format (shm_info->mem, pixman_format, width, height, stride); status = image->status; if (unlikely (status)) { _cairo_xcb_shm_info_destroy (shm_info); return status; } status = _cairo_user_data_array_set_data (&image->user_data, (const cairo_user_data_key_t *) connection, shm_info, (cairo_destroy_func_t) _cairo_xcb_shm_info_destroy); if (unlikely (status)) { cairo_surface_destroy (image); _cairo_xcb_shm_info_destroy (shm_info); return status; } } } #endif if (image == NULL) { image = _cairo_image_surface_create_with_pixman_format (NULL, pixman_format, width, height, 0); status = image->status; if (unlikely (status)) return status; } *image_out = (cairo_image_surface_t *) image; *shm_info_out = shm_info; return CAIRO_STATUS_SUCCESS; }
static cairo_status_t _cairo_gl_glyph_cache_add_glyph (cairo_gl_glyph_cache_t *cache, cairo_scaled_glyph_t *scaled_glyph) { cairo_image_surface_t *glyph_surface = scaled_glyph->surface; cairo_gl_glyph_private_t *glyph_private; cairo_rtree_node_t *node = NULL; cairo_image_surface_t *clone = NULL; cairo_status_t status; int width, height; GLenum internal_format, format, type; cairo_bool_t has_alpha; if (! _cairo_gl_get_image_format_and_type (glyph_surface->pixman_format, &internal_format, &format, &type, &has_alpha)) { cairo_bool_t is_supported; clone = _cairo_image_surface_coerce (glyph_surface, _cairo_format_from_content (glyph_surface->base.content)); if (unlikely (clone->base.status)) return clone->base.status; is_supported = _cairo_gl_get_image_format_and_type (clone->pixman_format, &internal_format, &format, &type, &has_alpha); assert (is_supported); glyph_surface = clone; } width = glyph_surface->width; if (width < GLYPH_CACHE_MIN_SIZE) width = GLYPH_CACHE_MIN_SIZE; height = glyph_surface->height; if (height < GLYPH_CACHE_MIN_SIZE) height = GLYPH_CACHE_MIN_SIZE; /* search for an available slot */ status = _cairo_rtree_insert (&cache->rtree, width, height, &node); /* search for an unlocked slot */ if (status == CAIRO_INT_STATUS_UNSUPPORTED) { status = _cairo_rtree_evict_random (&cache->rtree, width, height, &node); if (status == CAIRO_STATUS_SUCCESS) { status = _cairo_rtree_node_insert (&cache->rtree, node, width, height, &node); } } if (status) return status; glPixelStorei (GL_UNPACK_ALIGNMENT, 1); glPixelStorei (GL_UNPACK_ROW_LENGTH, glyph_surface->stride / (PIXMAN_FORMAT_BPP (glyph_surface->pixman_format) / 8)); glTexSubImage2D (GL_TEXTURE_2D, 0, node->x, node->y, glyph_surface->width, glyph_surface->height, format, type, glyph_surface->data); glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); scaled_glyph->surface_private = node; node->owner = &scaled_glyph->surface_private; glyph_private = (cairo_gl_glyph_private_t *) node; glyph_private->cache = cache; /* compute tex coords */ glyph_private->p1.x = node->x / (double) cache->width; glyph_private->p1.y = node->y / (double) cache->height; glyph_private->p2.x = (node->x + glyph_surface->width) / (double) cache->width; glyph_private->p2.y = (node->y + glyph_surface->height) / (double) cache->height; cairo_surface_destroy (&clone->base); return CAIRO_STATUS_SUCCESS; }
static cairo_status_t _get_image (cairo_xcb_surface_t *surface, cairo_bool_t use_shm, cairo_image_surface_t **image_out) { cairo_image_surface_t *image; cairo_xcb_connection_t *connection; xcb_get_image_reply_t *reply; cairo_status_t status; if (surface->base.is_clear || surface->deferred_clear) { image = (cairo_image_surface_t *) _cairo_image_surface_create_with_pixman_format (NULL, surface->pixman_format, surface->width, surface->height, 0); *image_out = image; return image->base.status; } connection = surface->connection; status = _cairo_xcb_connection_acquire (connection); if (unlikely (status)) return status; status = _cairo_xcb_connection_take_socket (connection); if (unlikely (status)) goto FAIL; if (use_shm) { status = _get_shm_image (surface, image_out); if (status != CAIRO_INT_STATUS_UNSUPPORTED) goto FAIL; } if (surface->use_pixmap == 0) { status = _cairo_xcb_connection_get_image (connection, surface->drawable, 0, 0, surface->width, surface->height, &reply); if (unlikely (status)) goto FAIL; } else { surface->use_pixmap--; reply = NULL; } if (reply == NULL && ! surface->owns_pixmap) { /* xcb_get_image_t from a window is dangerous because it can * produce errors if the window is unmapped or partially * outside the screen. We could check for errors and * retry, but to keep things simple, we just create a * temporary pixmap */ xcb_pixmap_t pixmap; xcb_gcontext_t gc; gc = _cairo_xcb_screen_get_gc (surface->screen, surface->drawable, surface->depth); pixmap = _cairo_xcb_connection_create_pixmap (connection, surface->depth, surface->drawable, surface->width, surface->height); /* XXX IncludeInferiors? */ _cairo_xcb_connection_copy_area (connection, surface->drawable, pixmap, gc, 0, 0, 0, 0, surface->width, surface->height); _cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc); status = _cairo_xcb_connection_get_image (connection, pixmap, 0, 0, surface->width, surface->height, &reply); _cairo_xcb_connection_free_pixmap (connection, pixmap); if (unlikely (status)) goto FAIL; } if (unlikely (reply == NULL)) { status = _cairo_error (CAIRO_STATUS_NO_MEMORY); goto FAIL; } /* XXX byte swap */ /* XXX format conversion */ assert (reply->depth == surface->depth); image = (cairo_image_surface_t *) _cairo_image_surface_create_with_pixman_format (xcb_get_image_data (reply), surface->pixman_format, surface->width, surface->height, CAIRO_STRIDE_FOR_WIDTH_BPP (surface->width, PIXMAN_FORMAT_BPP (surface->pixman_format))); status = image->base.status; if (unlikely (status)) { free (reply); goto FAIL; } assert (xcb_get_image_data_length (reply) == image->height * image->stride); pixman_image_set_destroy_function (image->pixman_image, _destroy_image, reply); _cairo_xcb_connection_release (connection); /* synchronisation point */ surface->marked_dirty = FALSE; *image_out = image; return CAIRO_STATUS_SUCCESS; FAIL: _cairo_xcb_connection_release (connection); return status; }
static cairo_surface_t * map_qimage_to_image (QImage *qimg, const cairo_rectangle_int_t *extents) { struct _qimage_surface *surface; pixman_image_t *pixman_image; pixman_format_code_t pixman_format; uint8_t *data; if (qimg == NULL) return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY); switch (qimg->format()) { case QImage::Format_ARGB32_Premultiplied: pixman_format = PIXMAN_a8r8g8b8; break; case QImage::Format_RGB32: pixman_format = PIXMAN_x8r8g8b8; break; case QImage::Format_Indexed8: // XXX not quite pixman_format = PIXMAN_a8; break; #ifdef WORDS_BIGENDIAN case QImage::Format_Mono: #else case QImage::Format_MonoLSB: #endif pixman_format = PIXMAN_a1; break; case QImage::Format_Invalid: #ifdef WORDS_BIGENDIAN case QImage::Format_MonoLSB: #else case QImage::Format_Mono: #endif case QImage::Format_ARGB32: case QImage::Format_RGB16: case QImage::Format_ARGB8565_Premultiplied: case QImage::Format_RGB666: case QImage::Format_ARGB6666_Premultiplied: case QImage::Format_RGB555: case QImage::Format_ARGB8555_Premultiplied: case QImage::Format_RGB888: case QImage::Format_RGB444: case QImage::Format_ARGB4444_Premultiplied: case QImage::NImageFormats: default: delete qimg; return _cairo_surface_create_in_error (CAIRO_STATUS_INVALID_FORMAT); } data = qimg->bits(); data += extents->y * qimg->bytesPerLine(); data += extents->x * PIXMAN_FORMAT_BPP (pixman_format) / 8; pixman_image = pixman_image_create_bits (pixman_format, extents->width, extents->height, (uint32_t *)data, qimg->bytesPerLine()); if (pixman_image == NULL) { delete qimg; return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY); } surface = (struct _qimage_surface *) malloc (sizeof(*surface)); if (unlikely (surface == NULL)) { pixman_image_unref (pixman_image); delete qimg; return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY); } _cairo_image_surface_init (&surface->image, pixman_image, pixman_format); surface->qimg = qimg; cairo_surface_set_device_offset (&surface->image.base, -extents->x, -extents->y); return &surface->image.base; }
static void composite_clipped(pixman_image_t *src, pixman_image_t *mask, pixman_image_t *dest, const pixman_transform_t *transform, pixman_filter_t filter, pixman_region32_t *src_clip) { int n_box; pixman_box32_t *boxes; int32_t dest_width; int32_t dest_height; int src_stride; int bitspp; pixman_format_code_t src_format; void *src_data; int i; /* Hardcoded to use PIXMAN_OP_OVER, because sampling outside of * a Pixman image produces (0,0,0,0) instead of discarding the * fragment. */ dest_width = pixman_image_get_width(dest); dest_height = pixman_image_get_height(dest); src_format = pixman_image_get_format(src); src_stride = pixman_image_get_stride(src); bitspp = PIXMAN_FORMAT_BPP(src_format); src_data = pixman_image_get_data(src); assert(src_format); /* This would be massive overdraw, except when n_box is 1. */ boxes = pixman_region32_rectangles(src_clip, &n_box); for (i = 0; i < n_box; i++) { uint8_t *ptr = src_data; pixman_image_t *boximg; pixman_transform_t adj = *transform; ptr += boxes[i].y1 * src_stride; ptr += boxes[i].x1 * bitspp / 8; boximg = pixman_image_create_bits_no_clear(src_format, boxes[i].x2 - boxes[i].x1, boxes[i].y2 - boxes[i].y1, (uint32_t *)ptr, src_stride); pixman_transform_translate(&adj, NULL, pixman_int_to_fixed(-boxes[i].x1), pixman_int_to_fixed(-boxes[i].y1)); pixman_image_set_transform(boximg, &adj); pixman_image_set_filter(boximg, filter, NULL, 0); pixman_image_composite32(PIXMAN_OP_OVER, boximg, mask, dest, 0, 0, /* src_x, src_y */ 0, 0, /* mask_x, mask_y */ 0, 0, /* dest_x, dest_y */ dest_width, dest_height); pixman_image_unref(boximg); } if (n_box > 1) { static bool warned = false; if (!warned) weston_log("Pixman-renderer warning: %dx overdraw\n", n_box); warned = true; } }
static pixman_image_t * create_image (int max_size, const pixman_format_code_t *formats, uint32_t flags) { int width, height; pixman_image_t *image; pixman_format_code_t format; uint32_t *data; int bpp; int stride; int i; pixman_image_destroy_func_t destroy; if ((flags & ALLOW_SOLID) && lcg_rand_n (4) == 0) { pixman_color_t color; color.alpha = lcg_rand_u32(); color.red = lcg_rand_u32(); color.green = lcg_rand_u32(); color.blue = lcg_rand_u32(); return pixman_image_create_solid_fill (&color); } width = lcg_rand_n (max_size) + 1; height = lcg_rand_n (max_size) + 1; format = random_format (formats); bpp = PIXMAN_FORMAT_BPP (format); stride = (width * bpp + 7) / 8 + lcg_rand_n (17); stride = (stride + 3) & ~3; if (lcg_rand_n (64) == 0) { if (!(data = (uint32_t *)make_random_bytes (stride * height))) { fprintf (stderr, "Out of memory\n"); abort (); } destroy = destroy_fenced; } else { uint8_t *d8; data = malloc (stride * height); d8 = (uint8_t *)data; for (i = 0; i < height * stride; ++i) d8[i] = lcg_rand_n (256); destroy = destroy_malloced; } image = pixman_image_create_bits (format, width, height, data, stride); pixman_image_set_destroy_function (image, destroy, data); if ((flags & ALLOW_CLIPPED) && lcg_rand_n (8) == 0) { pixman_box16_t clip_boxes[8]; pixman_region16_t clip; int n = lcg_rand_n (8) + 1; for (i = 0; i < n; i++) { clip_boxes[i].x1 = lcg_rand_n (width); clip_boxes[i].y1 = lcg_rand_n (height); clip_boxes[i].x2 = clip_boxes[i].x1 + lcg_rand_n (width - clip_boxes[i].x1); clip_boxes[i].y2 = clip_boxes[i].y1 + lcg_rand_n (height - clip_boxes[i].y1); } pixman_region_init_rects (&clip, clip_boxes, n); pixman_image_set_clip_region (image, &clip); pixman_region_fini (&clip); } if ((flags & ALLOW_SOURCE_CLIPPING) && lcg_rand_n (4) == 0) { pixman_image_set_source_clipping (image, TRUE); pixman_image_set_has_client_clip (image, TRUE); } if ((flags & ALLOW_ALPHA_MAP) && lcg_rand_n (16) == 0) { pixman_image_t *alpha_map; int alpha_x, alpha_y; alpha_x = lcg_rand_n (width); alpha_y = lcg_rand_n (height); alpha_map = create_image (max_size, formats, (flags & ~(ALLOW_ALPHA_MAP | ALLOW_SOLID))); pixman_image_set_alpha_map (image, alpha_map, alpha_x, alpha_y); pixman_image_unref (alpha_map); } if ((flags & ALLOW_REPEAT) && lcg_rand_n (2) == 0) pixman_image_set_repeat (image, lcg_rand_n (4)); image_endian_swap (image); return image; }