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cf0175ffce
We need to use GL_BGRA instead of GL_RGBA when doing glReadPixels() on EGL on Windows (ANGLE) so that the red and blue bits won't be displayed inverted. Also fix the logic where we determine whether to bit blit or redraw everything.
116 lines
5.1 KiB
C
116 lines
5.1 KiB
C
/* GDK - The GIMP Drawing Kit
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*
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* gdkglcontextprivate.h: GL context abstraction
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*
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* Copyright © 2014 Emmanuele Bassi
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GDK_GL_CONTEXT_PRIVATE_H__
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#define __GDK_GL_CONTEXT_PRIVATE_H__
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#include "gdkglcontext.h"
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#include "gdkdrawcontextprivate.h"
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G_BEGIN_DECLS
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#define GDK_GL_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_GL_CONTEXT, GdkGLContextClass))
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#define GDK_IS_GL_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_GL_CONTEXT))
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#define GDK_GL_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_GL_CONTEXT, GdkGLContextClass))
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typedef struct _GdkGLContextClass GdkGLContextClass;
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struct _GdkGLContext
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{
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GdkDrawContext parent_instance;
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/* We store the old drawn areas to support buffer-age optimizations */
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cairo_region_t *old_updated_area[2];
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};
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struct _GdkGLContextClass
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{
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GdkDrawContextClass parent_class;
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gboolean (* realize) (GdkGLContext *context,
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GError **error);
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cairo_region_t * (* get_damage) (GdkGLContext *context);
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gboolean (* texture_from_surface) (GdkGLContext *context,
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cairo_surface_t *surface,
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cairo_region_t *region);
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};
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typedef struct {
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guint program;
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guint position_location;
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guint uv_location;
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guint map_location;
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guint flip_location;
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} GdkGLContextProgram;
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typedef struct {
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guint vertex_array_object;
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guint tmp_framebuffer;
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guint tmp_vertex_buffer;
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GdkGLContextProgram texture_2d_quad_program;
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GdkGLContextProgram texture_rect_quad_program;
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GdkGLContextProgram *current_program;
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guint is_legacy : 1;
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guint use_es : 1;
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} GdkGLContextPaintData;
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void gdk_gl_context_set_is_legacy (GdkGLContext *context,
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gboolean is_legacy);
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void gdk_gl_context_upload_texture (GdkGLContext *context,
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const guchar *data,
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int width,
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int height,
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int stride,
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guint texture_target);
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GdkGLContextPaintData * gdk_gl_context_get_paint_data (GdkGLContext *context);
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gboolean gdk_gl_context_use_texture_rectangle (GdkGLContext *context);
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gboolean gdk_gl_context_has_framebuffer_blit (GdkGLContext *context);
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gboolean gdk_gl_context_has_frame_terminator (GdkGLContext *context);
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gboolean gdk_gl_context_has_unpack_subimage (GdkGLContext *context);
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void gdk_gl_context_push_debug_group (GdkGLContext *context,
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const char *message);
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void gdk_gl_context_push_debug_group_printf (GdkGLContext *context,
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const char *format,
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...) G_GNUC_PRINTF (2, 3);
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void gdk_gl_context_pop_debug_group (GdkGLContext *context);
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void gdk_gl_context_label_object (GdkGLContext *context,
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guint identifier,
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guint name,
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const char *label);
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void gdk_gl_context_label_object_printf (GdkGLContext *context,
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guint identifier,
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guint name,
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const char *format,
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...) G_GNUC_PRINTF (4, 5);
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gboolean gdk_gl_context_has_debug (GdkGLContext *self) G_GNUC_PURE;
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gboolean gdk_gl_context_use_es_bgra (GdkGLContext *context);
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G_END_DECLS
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#endif /* __GDK_GL_CONTEXT_PRIVATE_H__ */
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