ae5f8323c1
This extension lets you upload texture data from a subregion of a buffer by passing GL_UNPACK_ROW_LENGTH, GL_UNPACK_SKIP_PIXELS and GL_UNPACK_SKIP_ROWS to glPixelStore. When this extension is available the GLES texture driver will now avoid making a copy of the bitmap when a subregion is used. Note that Mesa doesn't currently advertise this extension but I've made a patch to propose it: http://lists.freedesktop.org/archives/mesa-dev/2012-March/020191.html
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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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*
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*/
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#ifndef __COGL_INTERNAL_H
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#define __COGL_INTERNAL_H
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#include "cogl-bitmask.h"
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#ifdef COGL_HAS_XLIB_SUPPORT
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#include <X11/Xutil.h>
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#endif
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#ifdef COGL_GL_DEBUG
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const char *
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_cogl_gl_error_to_string (GLenum error_code);
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#define GE(ctx, x) G_STMT_START { \
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GLenum __err; \
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(ctx)->x; \
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while ((__err = (ctx)->glGetError ()) != GL_NO_ERROR) \
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{ \
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g_warning ("%s: GL error (%d): %s\n", \
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G_STRLOC, \
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__err, \
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_cogl_gl_error_to_string (__err)); \
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} } G_STMT_END
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#define GE_RET(ret, ctx, x) G_STMT_START { \
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GLenum __err; \
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ret = (ctx)->x; \
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while ((__err = (ctx)->glGetError ()) != GL_NO_ERROR) \
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{ \
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g_warning ("%s: GL error (%d): %s\n", \
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G_STRLOC, \
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__err, \
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_cogl_gl_error_to_string (__err)); \
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} } G_STMT_END
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#else /* !COGL_GL_DEBUG */
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#define GE(ctx, x) ((ctx)->x)
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#define GE_RET(ret, ctx, x) (ret = ((ctx)->x))
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#endif /* COGL_GL_DEBUG */
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#define COGL_ENABLE_ALPHA_TEST (1<<1)
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#define COGL_ENABLE_VERTEX_ARRAY (1<<2)
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#define COGL_ENABLE_COLOR_ARRAY (1<<3)
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void
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_cogl_enable (unsigned long flags);
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unsigned long
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_cogl_get_enable (void);
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void
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_cogl_transform_point (const CoglMatrix *matrix_mv,
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const CoglMatrix *matrix_p,
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const float *viewport,
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float *x,
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float *y);
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#define COGL_DRIVER_ERROR (_cogl_driver_error_quark ())
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typedef enum { /*< prefix=COGL_DRIVER_ERROR >*/
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COGL_DRIVER_ERROR_UNKNOWN_VERSION,
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COGL_DRIVER_ERROR_INVALID_VERSION,
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COGL_DRIVER_ERROR_NO_SUITABLE_DRIVER_FOUND,
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COGL_DRIVER_ERROR_FAILED_TO_LOAD_LIBRARY
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} CoglDriverError;
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typedef enum
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{
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COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE = 1L<<0,
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COGL_PRIVATE_FEATURE_MESA_PACK_INVERT = 1L<<1,
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COGL_PRIVATE_FEATURE_STENCIL_BUFFER = 1L<<2,
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COGL_PRIVATE_FEATURE_OFFSCREEN_BLIT = 1L<<3,
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COGL_PRIVATE_FEATURE_FOUR_CLIP_PLANES = 1L<<4,
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COGL_PRIVATE_FEATURE_PBOS = 1L<<5,
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COGL_PRIVATE_FEATURE_VBOS = 1L<<6,
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COGL_PRIVATE_FEATURE_EXT_PACKED_DEPTH_STENCIL = 1L<<7,
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COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL = 1L<<8,
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COGL_PRIVATE_FEATURE_TEXTURE_FORMAT_BGRA8888 = 1L<<9,
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COGL_PRIVATE_FEATURE_UNPACK_SUBIMAGE = 1L<<10
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} CoglPrivateFeatureFlags;
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/* Sometimes when evaluating pipelines, either during comparisons or
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* if calculating a hash value we need to tweak the evaluation
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* semantics */
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typedef enum _CoglPipelineEvalFlags
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{
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COGL_PIPELINE_EVAL_FLAG_NONE = 0
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} CoglPipelineEvalFlags;
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gboolean
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_cogl_check_extension (const char *name, const char *ext);
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GQuark
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_cogl_driver_error_quark (void);
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#endif /* __COGL_INTERNAL_H */
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