/* cairo - a vector graphics library with display and print output * * Copyright © 2009 Eric Anholt * Copyright © 2009 Chris Wilson * Copyright © 2005,2010 Red Hat, Inc * Copyright © 2011 Linaro Limited * * 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): * Benjamin Otte * Carl Worth * Chris Wilson * Eric Anholt * T. Zachary Laine * Alexandros Frantzis */ #ifndef CAIRO_GL_PRIVATE_H #define CAIRO_GL_PRIVATE_H #define GL_GLEXT_PROTOTYPES #include "cairoint.h" #include "cairo-gl.h" #include "cairo-gl-gradient-private.h" #include "cairo-device-private.h" #include "cairo-error-private.h" #include "cairo-rtree-private.h" #include "cairo-scaled-font-private.h" #include "cairo-spans-compositor-private.h" #include "cairo-array-private.h" #include #if CAIRO_HAS_GL_SURFACE #include #include #elif CAIRO_HAS_GLESV2_SURFACE #include #include #endif #include "cairo-gl-ext-def-private.h" #define DEBUG_GL 0 #if DEBUG_GL && __GNUC__ #define UNSUPPORTED(reason) ({ \ fprintf (stderr, \ "cairo-gl: hit unsupported operation in %s(), line %d: %s\n", \ __FUNCTION__, __LINE__, reason); \ CAIRO_INT_STATUS_UNSUPPORTED; \ }) #else #define UNSUPPORTED(reason) CAIRO_INT_STATUS_UNSUPPORTED #endif #define CAIRO_GL_VERSION_ENCODE(major, minor) ( \ ((major) * 256) \ + ((minor) * 1)) /* maximal number of shaders we keep in the cache. * Random number that is hopefully big enough to not cause many cache evictions. */ #define CAIRO_GL_MAX_SHADERS_PER_CONTEXT 64 /* VBO size that we allocate, smaller size means we gotta flush more often, * but larger means hogging more memory and can cause trouble for drivers * (especially on embedded devices). */ #define CAIRO_GL_VBO_SIZE (16*1024) typedef struct _cairo_gl_surface cairo_gl_surface_t; /* GL flavor */ typedef enum cairo_gl_flavor { CAIRO_GL_FLAVOR_NONE = 0, CAIRO_GL_FLAVOR_DESKTOP = 1, CAIRO_GL_FLAVOR_ES = 2 } cairo_gl_flavor_t; /* Indices for vertex attributes used by BindAttribLocation etc */ enum { CAIRO_GL_VERTEX_ATTRIB_INDEX = 0, CAIRO_GL_COLOR_ATTRIB_INDEX = 1, CAIRO_GL_TEXCOORD0_ATTRIB_INDEX = 2, CAIRO_GL_TEXCOORD1_ATTRIB_INDEX = CAIRO_GL_TEXCOORD0_ATTRIB_INDEX + 1 }; typedef enum cairo_gl_operand_type { CAIRO_GL_OPERAND_NONE, CAIRO_GL_OPERAND_CONSTANT, CAIRO_GL_OPERAND_TEXTURE, CAIRO_GL_OPERAND_LINEAR_GRADIENT, CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0, CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE, CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT, CAIRO_GL_OPERAND_COUNT } cairo_gl_operand_type_t; /* This union structure describes a potential source or mask operand to the * compositing equation. */ typedef struct cairo_gl_operand { cairo_gl_operand_type_t type; union { struct { GLuint tex; cairo_gl_surface_t *surface; cairo_gl_surface_t *owns_surface; cairo_surface_attributes_t attributes; } texture; struct { GLfloat color[4]; } constant; struct { cairo_gl_gradient_t *gradient; cairo_matrix_t m; cairo_circle_double_t circle_d; double radius_0, a; cairo_extend_t extend; } gradient; }; unsigned int vertex_offset; } cairo_gl_operand_t; typedef struct cairo_gl_source { cairo_surface_t base; cairo_gl_operand_t operand; } cairo_gl_source_t; struct _cairo_gl_surface { cairo_surface_t base; cairo_gl_operand_t operand; int width, height; GLuint tex; /* GL texture object containing our data. */ GLuint fb; /* GL framebuffer object wrapping our data. */ GLuint depth_stencil; /* GL renderbuffer object for holding stencil buffer clip. */ #if CAIRO_HAS_GL_SURFACE GLuint msaa_rb; /* The ARB MSAA path uses a renderbuffer. */ GLuint msaa_fb; #endif GLuint msaa_depth_stencil; cairo_bool_t stencil_and_msaa_caps_initialized; cairo_bool_t supports_stencil; /* Stencil support for for non-texture surfaces. */ cairo_bool_t supports_msaa; cairo_bool_t msaa_active; /* Whether the multisampling framebuffer is active or not. */ int owns_tex; cairo_bool_t needs_update; cairo_region_t *clip_region; }; typedef struct cairo_gl_glyph_cache { cairo_rtree_t rtree; cairo_gl_surface_t *surface; } cairo_gl_glyph_cache_t; typedef enum cairo_gl_tex { CAIRO_GL_TEX_SOURCE = 0, CAIRO_GL_TEX_MASK = 1, CAIRO_GL_TEX_TEMP = 2 } cairo_gl_tex_t; typedef struct cairo_gl_shader { GLuint fragment_shader; GLuint program; } cairo_gl_shader_t; typedef enum cairo_gl_shader_in { CAIRO_GL_SHADER_IN_NORMAL, CAIRO_GL_SHADER_IN_CA_SOURCE, CAIRO_GL_SHADER_IN_CA_SOURCE_ALPHA, CAIRO_GL_SHADER_IN_COUNT } cairo_gl_shader_in_t; typedef enum cairo_gl_var_type { CAIRO_GL_VAR_NONE, CAIRO_GL_VAR_TEXCOORDS, } cairo_gl_var_type_t; typedef enum cairo_gl_primitive_type { CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES, CAIRO_GL_PRIMITIVE_TYPE_TRISTRIPS } cairo_gl_primitive_type_t; #define cairo_gl_var_type_hash(src,mask,spans,dest) ((spans) << 3) | ((mask) << 2 | (src << 1) | (dest)) #define CAIRO_GL_VAR_TYPE_MAX ((CAIRO_GL_VAR_TEXCOORDS << 3) | (CAIRO_GL_VAR_TEXCOORDS << 2) | (CAIRO_GL_VAR_TEXCOORDS << 1) | CAIRO_GL_VAR_TEXCOORDS) typedef void (*cairo_gl_generic_func_t)(void); typedef cairo_gl_generic_func_t (*cairo_gl_get_proc_addr_func_t)(const char *procname); typedef struct _cairo_gl_dispatch { /* Buffers */ void (*GenBuffers) (GLsizei n, GLuint *buffers); void (*BindBuffer) (GLenum target, GLuint buffer); void (*BufferData) (GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage); GLvoid *(*MapBuffer) (GLenum target, GLenum access); GLboolean (*UnmapBuffer) (GLenum target); /* Shaders */ GLuint (*CreateShader) (GLenum type); void (*ShaderSource) (GLuint shader, GLsizei count, const GLchar** string, const GLint* length); void (*CompileShader) (GLuint shader); void (*GetShaderiv) (GLuint shader, GLenum pname, GLint *params); void (*GetShaderInfoLog) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog); void (*DeleteShader) (GLuint shader); /* Programs */ GLuint (*CreateProgram) (void); void (*AttachShader) (GLuint program, GLuint shader); void (*DeleteProgram) (GLuint program); void (*LinkProgram) (GLuint program); void (*UseProgram) (GLuint program); void (*GetProgramiv) (GLuint program, GLenum pname, GLint *params); void (*GetProgramInfoLog) (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog); /* Uniforms */ GLint (*GetUniformLocation) (GLuint program, const GLchar* name); void (*Uniform1f) (GLint location, GLfloat x); void (*Uniform2f) (GLint location, GLfloat x, GLfloat y); void (*Uniform3f) (GLint location, GLfloat x, GLfloat y, GLfloat z); void (*Uniform4f) (GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w); void (*UniformMatrix3fv) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value); void (*UniformMatrix4fv) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value); void (*Uniform1i) (GLint location, GLint x); /* Attributes */ void (*BindAttribLocation) (GLuint program, GLuint index, const GLchar *name); void (*VertexAttribPointer) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid *pointer); void (*EnableVertexAttribArray) (GLuint index); void (*DisableVertexAttribArray) (GLuint index); /* Framebuffer objects */ void (*GenFramebuffers) (GLsizei n, GLuint* framebuffers); void (*BindFramebuffer) (GLenum target, GLuint framebuffer); void (*FramebufferTexture2D) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level); GLenum (*CheckFramebufferStatus) (GLenum target); void (*DeleteFramebuffers) (GLsizei n, const GLuint* framebuffers); void (*GenRenderbuffers) (GLsizei n, GLuint *renderbuffers); void (*BindRenderbuffer) (GLenum target, GLuint renderbuffer); void (*RenderbufferStorage) (GLenum target, GLenum internal_format, GLsizei width, GLsizei height); void (*FramebufferRenderbuffer) (GLenum target, GLenum attachment, GLenum renderbuffer_ttarget, GLuint renderbuffer); void (*DeleteRenderbuffers) (GLsizei n, GLuint *renderbuffers); void (*BlitFramebuffer) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter); void (*RenderbufferStorageMultisample) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height); void (*FramebufferTexture2DMultisample) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLsizei samples); } cairo_gl_dispatch_t; struct _cairo_gl_context { cairo_device_t base; const cairo_compositor_t *compositor; GLuint texture_load_pbo; GLint max_framebuffer_size; GLint max_texture_size; GLint max_textures; GLenum tex_target; GLint num_samples; cairo_bool_t supports_msaa; char *vb; cairo_bool_t has_shader_support; GLuint vertex_shaders[CAIRO_GL_VAR_TYPE_MAX + 1]; cairo_gl_shader_t fill_rectangles_shader; cairo_cache_t shaders; cairo_cache_t gradients; cairo_gl_glyph_cache_t glyph_cache[2]; cairo_list_t fonts; cairo_gl_surface_t *current_target; cairo_operator_t current_operator; cairo_gl_shader_t *pre_shader; /* for component alpha */ cairo_gl_shader_t *current_shader; cairo_gl_operand_t operands[2]; cairo_bool_t spans; unsigned int vb_offset; unsigned int vertex_size; cairo_region_t *clip_region; cairo_clip_t *clip; cairo_gl_primitive_type_t primitive_type; cairo_array_t tristrip_indices; cairo_bool_t has_mesa_pack_invert; cairo_gl_dispatch_t dispatch; GLfloat modelviewprojection_matrix[16]; cairo_gl_flavor_t gl_flavor; cairo_bool_t has_map_buffer; cairo_bool_t has_packed_depth_stencil; cairo_bool_t has_npot_repeat; cairo_bool_t thread_aware; void (*acquire) (void *ctx); void (*release) (void *ctx); void (*make_current) (void *ctx, cairo_gl_surface_t *surface); void (*swap_buffers)(void *ctx, cairo_gl_surface_t *surface); void (*destroy) (void *ctx); }; typedef struct _cairo_gl_composite { cairo_gl_surface_t *dst; cairo_operator_t op; cairo_region_t *clip_region; cairo_gl_operand_t src; cairo_gl_operand_t mask; cairo_bool_t spans; cairo_clip_t *clip; } cairo_gl_composite_t; typedef struct _cairo_gl_font { cairo_scaled_font_private_t base; cairo_device_t *device; cairo_list_t link; } cairo_gl_font_t; static cairo_always_inline GLenum _cairo_gl_get_error (void) { GLenum err = glGetError(); if (unlikely (err)) while (glGetError ()); return err; } static inline cairo_device_t * _cairo_gl_context_create_in_error (cairo_status_t status) { return (cairo_device_t *) _cairo_device_create_in_error (status); } cairo_private cairo_status_t _cairo_gl_context_init (cairo_gl_context_t *ctx); cairo_private void _cairo_gl_surface_init (cairo_device_t *device, cairo_gl_surface_t *surface, cairo_content_t content, int width, int height); static cairo_always_inline cairo_bool_t cairo_warn _cairo_gl_surface_is_texture (cairo_gl_surface_t *surface) { return surface->tex != 0; } cairo_private 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); static cairo_always_inline cairo_bool_t _cairo_gl_device_has_glsl (cairo_device_t *device) { return ((cairo_gl_context_t *) device)->has_shader_support; } static cairo_always_inline cairo_bool_t _cairo_gl_device_requires_power_of_two_textures (cairo_device_t *device) { return ((cairo_gl_context_t *) device)->tex_target == GL_TEXTURE_RECTANGLE; } static cairo_always_inline cairo_status_t cairo_warn _cairo_gl_context_acquire (cairo_device_t *device, cairo_gl_context_t **ctx) { cairo_status_t status; status = cairo_device_acquire (device); if (unlikely (status)) return status; /* clear potential previous GL errors */ _cairo_gl_get_error (); *ctx = (cairo_gl_context_t *) device; return CAIRO_STATUS_SUCCESS; } static cairo_always_inline cairo_warn cairo_status_t _cairo_gl_context_release (cairo_gl_context_t *ctx, cairo_status_t status) { GLenum err; err = _cairo_gl_get_error (); if (unlikely (err)) { cairo_status_t new_status; new_status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR); if (status == CAIRO_STATUS_SUCCESS) status = new_status; } cairo_device_release (&(ctx)->base); return status; } cairo_private void _cairo_gl_activate_surface_as_nonmultisampling (cairo_gl_context_t *ctx, cairo_gl_surface_t *surface); cairo_private void _cairo_gl_context_set_destination (cairo_gl_context_t *ctx, cairo_gl_surface_t *surface, cairo_bool_t multisampling); cairo_private void _cairo_gl_context_activate (cairo_gl_context_t *ctx, cairo_gl_tex_t tex_unit); cairo_private cairo_bool_t _cairo_gl_operator_is_supported (cairo_operator_t op); cairo_private cairo_bool_t _cairo_gl_ensure_stencil (cairo_gl_context_t *ctx, cairo_gl_surface_t *surface); cairo_private cairo_status_t _cairo_gl_composite_init (cairo_gl_composite_t *setup, cairo_operator_t op, cairo_gl_surface_t *dst, cairo_bool_t has_component_alpha); cairo_private void _cairo_gl_composite_fini (cairo_gl_composite_t *setup); cairo_private void _cairo_gl_composite_set_clip_region (cairo_gl_composite_t *setup, cairo_region_t *clip_region); cairo_private void _cairo_gl_composite_set_clip(cairo_gl_composite_t *setup, cairo_clip_t *clip); cairo_private cairo_int_status_t _cairo_gl_composite_set_source (cairo_gl_composite_t *setup, const cairo_pattern_t *pattern, const cairo_rectangle_int_t *sample, const cairo_rectangle_int_t *extents); cairo_private void _cairo_gl_composite_set_solid_source (cairo_gl_composite_t *setup, const cairo_color_t *color); cairo_private void _cairo_gl_composite_set_source_operand (cairo_gl_composite_t *setup, const cairo_gl_operand_t *source); cairo_private cairo_int_status_t _cairo_gl_composite_set_mask (cairo_gl_composite_t *setup, const cairo_pattern_t *pattern, const cairo_rectangle_int_t *sample, const cairo_rectangle_int_t *extents); cairo_private void _cairo_gl_composite_set_mask_operand (cairo_gl_composite_t *setup, const cairo_gl_operand_t *mask); cairo_private void _cairo_gl_composite_set_spans (cairo_gl_composite_t *setup); cairo_private cairo_status_t _cairo_gl_composite_begin (cairo_gl_composite_t *setup, cairo_gl_context_t **ctx); cairo_private cairo_status_t _cairo_gl_composite_begin_multisample (cairo_gl_composite_t *setup, cairo_gl_context_t **ctx_out, cairo_bool_t multisampling); cairo_private void _cairo_gl_composite_emit_rect (cairo_gl_context_t *ctx, GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2, uint8_t alpha); cairo_private void _cairo_gl_composite_emit_glyph (cairo_gl_context_t *ctx, GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2, GLfloat glyph_x1, GLfloat glyph_y1, GLfloat glyph_x2, GLfloat glyph_y2); cairo_private void _cairo_gl_composite_flush (cairo_gl_context_t *ctx); cairo_private cairo_int_status_t _cairo_gl_composite_emit_quad_as_tristrip (cairo_gl_context_t *ctx, cairo_gl_composite_t *setup, const cairo_point_t quad[4]); cairo_private cairo_int_status_t _cairo_gl_composite_emit_triangle_as_tristrip (cairo_gl_context_t *ctx, cairo_gl_composite_t *setup, const cairo_point_t triangle[3]); cairo_private void _cairo_gl_context_destroy_operand (cairo_gl_context_t *ctx, cairo_gl_tex_t tex_unit); cairo_private cairo_bool_t _cairo_gl_get_image_format_and_type (cairo_gl_flavor_t flavor, pixman_format_code_t pixman_format, GLenum *internal_format, GLenum *format, GLenum *type, cairo_bool_t *has_alpha, cairo_bool_t *needs_swap); cairo_private void _cairo_gl_glyph_cache_init (cairo_gl_glyph_cache_t *cache); cairo_private void _cairo_gl_glyph_cache_fini (cairo_gl_context_t *ctx, cairo_gl_glyph_cache_t *cache); cairo_private cairo_int_status_t _cairo_gl_surface_show_glyphs (void *abstract_dst, cairo_operator_t op, const cairo_pattern_t *source, cairo_glyph_t *glyphs, int num_glyphs, cairo_scaled_font_t *scaled_font, const cairo_clip_t *clip, int *remaining_glyphs); cairo_private cairo_status_t _cairo_gl_context_init_shaders (cairo_gl_context_t *ctx); cairo_private void _cairo_gl_context_fini_shaders (cairo_gl_context_t *ctx); static cairo_always_inline cairo_bool_t _cairo_gl_context_is_flushed (cairo_gl_context_t *ctx) { return ctx->vb_offset == 0; } cairo_private cairo_status_t _cairo_gl_get_shader_by_type (cairo_gl_context_t *ctx, cairo_gl_operand_t *source, cairo_gl_operand_t *mask, cairo_bool_t use_coverage, cairo_gl_shader_in_t in, cairo_gl_shader_t **shader); cairo_private void _cairo_gl_shader_bind_float (cairo_gl_context_t *ctx, const char *name, float value); cairo_private void _cairo_gl_shader_bind_vec2 (cairo_gl_context_t *ctx, const char *name, float value0, float value1); cairo_private void _cairo_gl_shader_bind_vec3 (cairo_gl_context_t *ctx, const char *name, float value0, float value1, float value2); cairo_private void _cairo_gl_shader_bind_vec4 (cairo_gl_context_t *ctx, const char *name, float value0, float value1, float value2, float value3); cairo_private void _cairo_gl_shader_bind_matrix (cairo_gl_context_t *ctx, const char *name, cairo_matrix_t* m); cairo_private void _cairo_gl_shader_bind_matrix4f (cairo_gl_context_t *ctx, const char *name, GLfloat* gl_m); cairo_private void _cairo_gl_set_shader (cairo_gl_context_t *ctx, cairo_gl_shader_t *shader); cairo_private void _cairo_gl_shader_fini (cairo_gl_context_t *ctx, cairo_gl_shader_t *shader); cairo_private int _cairo_gl_get_version (void); cairo_private cairo_gl_flavor_t _cairo_gl_get_flavor (void); cairo_private cairo_bool_t _cairo_gl_has_extension (const char *ext); cairo_private cairo_status_t _cairo_gl_dispatch_init(cairo_gl_dispatch_t *dispatch, cairo_gl_get_proc_addr_func_t get_proc_addr); cairo_private cairo_int_status_t _cairo_gl_operand_init (cairo_gl_operand_t *operand, const cairo_pattern_t *pattern, cairo_gl_surface_t *dst, const cairo_rectangle_int_t *sample, const cairo_rectangle_int_t *extents); cairo_private void _cairo_gl_solid_operand_init (cairo_gl_operand_t *operand, const cairo_color_t *color); cairo_private cairo_filter_t _cairo_gl_operand_get_filter (cairo_gl_operand_t *operand); cairo_private GLint _cairo_gl_operand_get_gl_filter (cairo_gl_operand_t *operand); cairo_private cairo_extend_t _cairo_gl_operand_get_extend (cairo_gl_operand_t *operand); cairo_private unsigned int _cairo_gl_operand_get_vertex_size (cairo_gl_operand_type_t type); cairo_private cairo_bool_t _cairo_gl_operand_needs_setup (cairo_gl_operand_t *dest, cairo_gl_operand_t *source, unsigned int vertex_offset); cairo_private void _cairo_gl_operand_bind_to_shader (cairo_gl_context_t *ctx, cairo_gl_operand_t *operand, cairo_gl_tex_t tex_unit); cairo_private void _cairo_gl_operand_emit (cairo_gl_operand_t *operand, GLfloat ** vb, GLfloat x, GLfloat y); cairo_private void _cairo_gl_operand_copy (cairo_gl_operand_t *dst, const cairo_gl_operand_t *src); cairo_private void _cairo_gl_operand_translate (cairo_gl_operand_t *operand, double tx, double ty); cairo_private void _cairo_gl_operand_destroy (cairo_gl_operand_t *operand); cairo_private const cairo_compositor_t * _cairo_gl_msaa_compositor_get (void); cairo_private const cairo_compositor_t * _cairo_gl_span_compositor_get (void); cairo_private const cairo_compositor_t * _cairo_gl_traps_compositor_get (void); cairo_private cairo_int_status_t _cairo_gl_check_composite_glyphs (const cairo_composite_rectangles_t *extents, cairo_scaled_font_t *scaled_font, cairo_glyph_t *glyphs, int *num_glyphs); cairo_private cairo_int_status_t _cairo_gl_composite_glyphs (void *_dst, cairo_operator_t op, cairo_surface_t *_src, int src_x, int src_y, int dst_x, int dst_y, cairo_composite_glyphs_info_t *info); cairo_private cairo_int_status_t _cairo_gl_composite_glyphs_with_clip (void *_dst, cairo_operator_t op, cairo_surface_t *_src, int src_x, int src_y, int dst_x, int dst_y, cairo_composite_glyphs_info_t *info, cairo_clip_t *clip); cairo_private cairo_surface_t * _cairo_gl_surface_create_scratch (cairo_gl_context_t *ctx, cairo_content_t content, int width, int height); cairo_private cairo_surface_t * _cairo_gl_pattern_to_source (cairo_surface_t *dst, const cairo_pattern_t *pattern, cairo_bool_t is_mask, const cairo_rectangle_int_t *extents, const cairo_rectangle_int_t *sample, int *src_x, int *src_y); cairo_private cairo_int_status_t _cairo_gl_msaa_compositor_draw_clip (cairo_gl_context_t *ctx, cairo_gl_composite_t *setup, cairo_clip_t *clip); cairo_private cairo_surface_t * _cairo_gl_white_source (void); static inline cairo_gl_operand_t * source_to_operand (cairo_surface_t *surface) { cairo_gl_source_t *source = (cairo_gl_source_t *)surface; return source ? &source->operand : NULL; } static inline void _cairo_gl_glyph_cache_unlock (cairo_gl_glyph_cache_t *cache) { _cairo_rtree_unpin (&cache->rtree); } slim_hidden_proto (cairo_gl_surface_create); slim_hidden_proto (cairo_gl_surface_create_for_texture); #endif /* CAIRO_GL_PRIVATE_H */