diff options
Diffstat (limited to 'libs/cairo-1.16.0/src/drm/cairo-drm-i965-glyphs.c')
| -rw-r--r-- | libs/cairo-1.16.0/src/drm/cairo-drm-i965-glyphs.c | 504 |
1 files changed, 504 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i965-glyphs.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-glyphs.c new file mode 100644 index 0000000..1ef0a6f --- /dev/null +++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-glyphs.c @@ -0,0 +1,504 @@ +/* cairo - a vector graphics library with display and print output + * + * Copyright © 2009 Intel Corporation + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + * + * The Original Code is the cairo graphics library. + * + * The Initial Developer of the Original Code is Red Hat, Inc. + * + * Contributor(s): + * Chris Wilson <chris@chris-wilson.co.uk> + */ + +#include "cairoint.h" + +#include "cairo-composite-rectangles-private.h" +#include "cairo-drm-i965-private.h" +#include "cairo-error-private.h" +#include "cairo-rtree-private.h" + +typedef struct _i965_glyphs i965_glyphs_t; + +typedef float * +(*i965_get_rectangle_func_t) (i965_glyphs_t *glyphs); + +struct _i965_glyphs { + i965_get_rectangle_func_t get_rectangle; + i965_shader_t shader; + + struct i965_vbo head, *tail; + + unsigned int vbo_offset; + float *vbo_base; +}; + +static float * +i965_glyphs_emit_rectangle (i965_glyphs_t *glyphs) +{ + return i965_add_rectangle (glyphs->shader.device); +} + +static float * +i965_glyphs_accumulate_rectangle (i965_glyphs_t *glyphs) +{ + float *vertices; + uint32_t size; + + size = glyphs->shader.device->rectangle_size; + if (unlikely (glyphs->vbo_offset + size > I965_VERTEX_SIZE)) { + struct i965_vbo *vbo; + + vbo = _cairo_malloc (sizeof (struct i965_vbo)); + if (unlikely (vbo == NULL)) { + /* throw error! */ + } + + glyphs->tail->next = vbo; + glyphs->tail = vbo; + + vbo->next = NULL; + vbo->bo = intel_bo_create (&glyphs->shader.device->intel, + I965_VERTEX_SIZE, I965_VERTEX_SIZE, + FALSE, I915_TILING_NONE, 0); + vbo->count = 0; + + glyphs->vbo_offset = 0; + glyphs->vbo_base = intel_bo_map (&glyphs->shader.device->intel, vbo->bo); + } + + vertices = glyphs->vbo_base + glyphs->vbo_offset; + glyphs->vbo_offset += size; + glyphs->tail->count += 3; + + return vertices; +} + +static void +i965_add_glyph_rectangle (i965_glyphs_t *glyphs, + int x1, int y1, + int x2, int y2, + intel_glyph_t *glyph) +{ + float *v; + + /* Each vertex is: + * 2 vertex coordinates + * 1 glyph texture coordinate + */ + + v = glyphs->get_rectangle (glyphs); + + /* bottom right */ + *v++ = x2; *v++ = y2; + *v++ = glyph->texcoord[0]; + + /* bottom left */ + *v++ = x1; *v++ = y2; + *v++ = glyph->texcoord[1]; + + /* top left */ + *v++ = x1; *v++ = y1; + *v++ = glyph->texcoord[2]; +} + +static cairo_status_t +i965_surface_mask_internal (i965_surface_t *dst, + cairo_operator_t op, + const cairo_pattern_t *source, + i965_surface_t *mask, + cairo_clip_t *clip, + const cairo_composite_rectangles_t *extents) +{ + i965_device_t *device; + i965_shader_t shader; + cairo_region_t *clip_region = NULL; + cairo_status_t status; + + i965_shader_init (&shader, dst, op); + + status = i965_shader_acquire_pattern (&shader, &shader.source, + source, &extents->bounded); + if (unlikely (status)) + return status; + + shader.mask.type.vertex = VS_NONE; + shader.mask.type.fragment = FS_SURFACE; + shader.mask.base.content = mask->intel.drm.base.content; + shader.mask.base.filter = i965_filter (CAIRO_FILTER_NEAREST); + shader.mask.base.extend = i965_extend (CAIRO_EXTEND_NONE); + + cairo_matrix_init_translate (&shader.mask.base.matrix, + -extents->bounded.x, + -extents->bounded.y); + cairo_matrix_scale (&shader.mask.base.matrix, + 1. / mask->intel.drm.width, + 1. / mask->intel.drm.height); + + shader.mask.base.bo = to_intel_bo (mask->intel.drm.bo); + shader.mask.base.format = mask->intel.drm.format; + shader.mask.base.width = mask->intel.drm.width; + shader.mask.base.height = mask->intel.drm.height; + shader.mask.base.stride = mask->intel.drm.stride; + + if (clip != NULL) { + status = _cairo_clip_get_region (clip, &clip_region); + assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED); + + if (clip_region != NULL && cairo_region_num_rectangles (clip_region) == 1) + clip_region = NULL; + + if (status == CAIRO_INT_STATUS_UNSUPPORTED) + i965_shader_set_clip (&shader, clip); + } + + status = cairo_device_acquire (dst->intel.drm.base.device); + if (unlikely (status)) + goto CLEANUP_SHADER; + + device = i965_device (dst); + + status = i965_shader_commit (&shader, device); + if (unlikely (status)) + goto CLEANUP_DEVICE; + + if (clip_region != NULL) { + unsigned int n, num_rectangles; + + num_rectangles = cairo_region_num_rectangles (clip_region); + for (n = 0; n < num_rectangles; n++) { + cairo_rectangle_int_t rect; + + cairo_region_get_rectangle (clip_region, n, &rect); + + i965_shader_add_rectangle (&shader, + rect.x, rect.y, + rect.width, rect.height); + } + } else { + i965_shader_add_rectangle (&shader, + extents->bounded.x, + extents->bounded.y, + extents->bounded.width, + extents->bounded.height); + } + + if (! extents->is_bounded) + status = i965_fixup_unbounded (dst, extents, clip); + + CLEANUP_DEVICE: + cairo_device_release (&device->intel.base.base); + CLEANUP_SHADER: + i965_shader_fini (&shader); + return status; +} + +cairo_int_status_t +i965_surface_glyphs (void *abstract_surface, + cairo_operator_t op, + const cairo_pattern_t *source, + cairo_glyph_t *g, + int num_glyphs, + cairo_scaled_font_t *scaled_font, + cairo_clip_t *clip, + int *num_remaining) +{ + i965_surface_t *surface = abstract_surface; + i965_surface_t *mask = NULL; + i965_device_t *device; + i965_glyphs_t glyphs; + cairo_composite_rectangles_t extents; + cairo_clip_t local_clip; + cairo_bool_t have_clip = FALSE; + cairo_bool_t overlap; + cairo_region_t *clip_region = NULL; + intel_bo_t *last_bo = NULL; + cairo_scaled_glyph_t *glyph_cache[64]; + cairo_status_t status; + int mask_x = 0, mask_y = 0; + int i = 0; + + *num_remaining = 0; + status = _cairo_composite_rectangles_init_for_glyphs (&extents, + surface->intel.drm.width, + surface->intel.drm.height, + op, source, + scaled_font, + g, num_glyphs, + clip, + &overlap); + if (unlikely (status)) + return status; + + if (clip != NULL && _cairo_clip_contains_rectangle (clip, &extents.mask)) + clip = NULL; + + if (clip != NULL && extents.is_bounded) { + clip = _cairo_clip_init_copy (&local_clip, clip); + status = _cairo_clip_rectangle (clip, &extents.bounded); + if (unlikely (status)) + return status; + + have_clip = TRUE; + } + + if (overlap || ! extents.is_bounded) { + cairo_format_t format; + + format = CAIRO_FORMAT_A8; + if (scaled_font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL) + format = CAIRO_FORMAT_ARGB32; + + mask = (i965_surface_t *) + i965_surface_create_internal (&i965_device (surface)->intel.base, + format, + extents.bounded.width, + extents.bounded.height, + I965_TILING_DEFAULT, + TRUE); + if (unlikely (mask->intel.drm.base.status)) + return mask->intel.drm.base.status; + + status = _cairo_surface_paint (&mask->intel.drm.base, + CAIRO_OPERATOR_CLEAR, + &_cairo_pattern_clear.base, + NULL); + if (unlikely (status)) { + cairo_surface_destroy (&mask->intel.drm.base); + return status; + } + + i965_shader_init (&glyphs.shader, mask, CAIRO_OPERATOR_ADD); + + status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source, + &_cairo_pattern_white.base, + &extents.bounded); + if (unlikely (status)) { + cairo_surface_destroy (&mask->intel.drm.base); + return status; + } + + mask_x = -extents.bounded.x; + mask_y = -extents.bounded.y; + } else { + i965_shader_init (&glyphs.shader, surface, op); + + status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source, + source, &extents.bounded); + if (unlikely (status)) + return status; + + if (clip != NULL) { + status = _cairo_clip_get_region (clip, &clip_region); + assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED); + + if (status == CAIRO_INT_STATUS_UNSUPPORTED) + i965_shader_set_clip (&glyphs.shader, clip); + } + } + + glyphs.head.next = NULL; + glyphs.head.bo = NULL; + glyphs.head.count = 0; + glyphs.tail = &glyphs.head; + + device = i965_device (surface); + if (mask != NULL || clip_region == NULL) { + glyphs.get_rectangle = i965_glyphs_emit_rectangle; + } else { + glyphs.get_rectangle = i965_glyphs_accumulate_rectangle; + glyphs.head.bo = intel_bo_create (&device->intel, + I965_VERTEX_SIZE, I965_VERTEX_SIZE, + FALSE, I915_TILING_NONE, 0); + if (unlikely (glyphs.head.bo == NULL)) + return _cairo_error (CAIRO_STATUS_NO_MEMORY); + + glyphs.vbo_base = intel_bo_map (&device->intel, glyphs.head.bo); + } + glyphs.vbo_offset = 0; + + status = cairo_device_acquire (&device->intel.base.base); + if (unlikely (status)) + goto CLEANUP_GLYPHS; + + _cairo_scaled_font_freeze_cache (scaled_font); + //private = _cairo_scaled_font_get_device (scaled_font, device); + if (scaled_font->surface_private == NULL) { + scaled_font->surface_private = device; + scaled_font->surface_backend = surface->intel.drm.base.backend; + cairo_list_add (&scaled_font->link, &device->intel.fonts); + } + + memset (glyph_cache, 0, sizeof (glyph_cache)); + + for (i = 0; i < num_glyphs; i++) { + cairo_scaled_glyph_t *scaled_glyph; + int x, y, x1, x2, y1, y2; + int cache_index = g[i].index % ARRAY_LENGTH (glyph_cache); + intel_glyph_t *glyph; + + scaled_glyph = glyph_cache[cache_index]; + if (scaled_glyph == NULL || + _cairo_scaled_glyph_index (scaled_glyph) != g[i].index) + { + status = _cairo_scaled_glyph_lookup (scaled_font, + g[i].index, + CAIRO_SCALED_GLYPH_INFO_METRICS, + &scaled_glyph); + if (unlikely (status)) + goto FINISH; + + glyph_cache[cache_index] = scaled_glyph; + } + + if (unlikely (scaled_glyph->metrics.width == 0 || + scaled_glyph->metrics.height == 0)) + { + continue; + } + + /* XXX glyph images are snapped to pixel locations */ + x = _cairo_lround (g[i].x); + y = _cairo_lround (g[i].y); + + x1 = x + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x); + y1 = y + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y); + x2 = x + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x); + y2 = y + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y); + + if (x2 < extents.bounded.x || + y2 < extents.bounded.y || + x1 > extents.bounded.x + extents.bounded.width || + y1 > extents.bounded.y + extents.bounded.height) + { + continue; + } + + if (scaled_glyph->surface_private == NULL) { + status = intel_get_glyph (&device->intel, scaled_font, scaled_glyph); + if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO)) { + status = CAIRO_STATUS_SUCCESS; + continue; + } + if (unlikely (status)) + goto FINISH; + } + glyph = intel_glyph_pin (scaled_glyph->surface_private); + + if (glyph->cache->buffer.bo != last_bo) { + intel_buffer_cache_t *cache = glyph->cache; + + glyphs.shader.mask.type.vertex = VS_GLYPHS; + glyphs.shader.mask.type.fragment = FS_GLYPHS; + glyphs.shader.mask.type.pattern = PATTERN_BASE; + + glyphs.shader.mask.base.bo = cache->buffer.bo; + glyphs.shader.mask.base.format = cache->buffer.format; + glyphs.shader.mask.base.width = cache->buffer.width; + glyphs.shader.mask.base.height = cache->buffer.height; + glyphs.shader.mask.base.stride = cache->buffer.stride; + glyphs.shader.mask.base.filter = i965_filter (CAIRO_FILTER_NEAREST); + glyphs.shader.mask.base.extend = i965_extend (CAIRO_EXTEND_NONE); + glyphs.shader.mask.base.content = CAIRO_CONTENT_ALPHA; /* XXX */ + + glyphs.shader.committed = FALSE; + status = i965_shader_commit (&glyphs.shader, device); + if (unlikely (status)) + goto FINISH; + + last_bo = cache->buffer.bo; + } + + x2 = x1 + glyph->width; + y2 = y1 + glyph->height; + + if (mask_x) + x1 += mask_x, x2 += mask_x; + if (mask_y) + y1 += mask_y, y2 += mask_y; + + i965_add_glyph_rectangle (&glyphs, x1, y1, x2, y2, glyph); + } + + if (mask != NULL && clip_region != NULL) + i965_clipped_vertices (device, &glyphs.head, clip_region); + + status = CAIRO_STATUS_SUCCESS; + FINISH: + _cairo_scaled_font_thaw_cache (scaled_font); + cairo_device_release (surface->intel.drm.base.device); + CLEANUP_GLYPHS: + i965_shader_fini (&glyphs.shader); + + if (glyphs.head.bo != NULL) { + struct i965_vbo *vbo, *next; + + intel_bo_destroy (&device->intel, glyphs.head.bo); + for (vbo = glyphs.head.next; vbo != NULL; vbo = next) { + next = vbo->next; + intel_bo_destroy (&device->intel, vbo->bo); + free (vbo); + } + } + + if (unlikely (status == CAIRO_INT_STATUS_UNSUPPORTED)) { + cairo_path_fixed_t path; + + _cairo_path_fixed_init (&path); + status = _cairo_scaled_font_glyph_path (scaled_font, + g + i, num_glyphs - i, + &path); + if (mask_x | mask_y) { + _cairo_path_fixed_translate (&path, + _cairo_fixed_from_int (mask_x), + _cairo_fixed_from_int (mask_y)); + } + if (likely (status == CAIRO_STATUS_SUCCESS)) { + status = surface->intel.drm.base.backend->fill (glyphs.shader.target, + glyphs.shader.op, + mask != NULL ? &_cairo_pattern_white.base : source, + &path, + CAIRO_FILL_RULE_WINDING, + 0, + scaled_font->options.antialias, + clip); + } + _cairo_path_fixed_fini (&path); + } + + if (mask != NULL) { + if (likely (status == CAIRO_STATUS_SUCCESS)) { + status = i965_surface_mask_internal (surface, op, source, mask, + clip, &extents); + } + cairo_surface_finish (&mask->intel.drm.base); + cairo_surface_destroy (&mask->intel.drm.base); + } + + if (have_clip) + _cairo_clip_fini (&local_clip); + + return status; +} |