36c85da3b8
This remove cogl-internal.h in favour of using cogl-private.h. Some things in cogl-internal.h were moved to driver/gl/cogl-util-gl-private.h and the _cogl_gl_error_to_string function whose prototype was moved from cogl-internal.h to cogl-util-gl-private.h has had its implementation moved from cogl.c to cogl-util-gl.c Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 01cc82ece091aa3bec4c07fdd6bc9e5135fca573)
146 lines
4.8 KiB
C
146 lines
4.8 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) 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_PRIVATE_H__
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#define __COGL_PRIVATE_H__
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#include <cogl/cogl-pipeline.h>
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#include "cogl-context.h"
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COGL_BEGIN_DECLS
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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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COGL_PRIVATE_FEATURE_SAMPLER_OBJECTS = 1L<<11,
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COGL_PRIVATE_FEATURE_FIXED_FUNCTION = 1L<<12,
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COGL_PRIVATE_FEATURE_READ_PIXELS_ANY_FORMAT = 1L<<13,
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COGL_PRIVATE_FEATURE_ANY_GL = 1L<<14,
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COGL_PRIVATE_FEATURE_ALPHA_TEST = 1L<<15,
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COGL_PRIVATE_FEATURE_FORMAT_CONVERSION = 1L<<16,
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COGL_PRIVATE_FEATURE_QUADS = 1L<<17,
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COGL_PRIVATE_FEATURE_BLEND_CONSTANT = 1L<<18,
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COGL_PRIVATE_FEATURE_QUERY_FRAMEBUFFER_BITS = 1L<<19,
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COGL_PRIVATE_FEATURE_BUILTIN_POINT_SIZE_UNIFORM = 1L<<20,
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COGL_PRIVATE_FEATURE_QUERY_TEXTURE_PARAMETERS = 1L<<21,
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COGL_PRIVATE_FEATURE_ALPHA_TEXTURES = 1L<<22,
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COGL_PRIVATE_FEATURE_TEXTURE_SWIZZLE = 1L<<23
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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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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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CoglBool
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_cogl_check_extension (const char *name, char * const *ext);
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void
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_cogl_clear (const CoglColor *color, unsigned long buffers);
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void
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_cogl_init (void);
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void
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_cogl_push_source (CoglPipeline *pipeline, CoglBool enable_legacy);
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CoglBool
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_cogl_get_enable_legacy_state (void);
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/*
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* _cogl_pixel_format_get_bytes_per_pixel:
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* @format: a #CoglPixelFormat
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*
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* Queries how many bytes a pixel of the given @format takes.
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*
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* Return value: The number of bytes taken for a pixel of the given
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* @format.
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*/
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int
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_cogl_pixel_format_get_bytes_per_pixel (CoglPixelFormat format);
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/*
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* _cogl_pixel_format_has_aligned_components:
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* @format: a #CoglPixelFormat
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*
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* Queries whether the ordering of the components for the given
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* @format depend on the endianness of the host CPU or if the
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* components can be accessed using bit shifting and bitmasking by
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* loading a whole pixel into a word.
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*
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* XXX: If we ever consider making something like this public we
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* should really try to think of a better name and come up with
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* much clearer documentation since it really depends on what
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* point of view you consider this from whether a format like
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* COGL_PIXEL_FORMAT_RGBA_8888 is endian dependent. E.g. If you
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* read an RGBA_8888 pixel into a uint32
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* it's endian dependent how you mask out the different channels.
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* But If you already have separate color components and you want
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* to write them to an RGBA_8888 pixel then the bytes can be
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* written sequentially regardless of the endianness.
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*
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* Return value: %TRUE if you need to consider the host CPU
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* endianness when dealing with the given @format
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* else %FALSE.
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*/
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CoglBool
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_cogl_pixel_format_is_endian_dependant (CoglPixelFormat format);
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/*
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* COGL_PIXEL_FORMAT_CAN_HAVE_PREMULT(format):
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* @format: a #CoglPixelFormat
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*
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* Returns TRUE if the pixel format can take a premult bit. This is
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* currently true for all formats that have an alpha channel except
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* COGL_PIXEL_FORMAT_A_8 (because that doesn't have any other
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* components to multiply by the alpha).
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*/
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#define COGL_PIXEL_FORMAT_CAN_HAVE_PREMULT(format) \
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(((format) & COGL_A_BIT) && (format) != COGL_PIXEL_FORMAT_A_8)
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COGL_END_DECLS
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#endif /* __COGL_PRIVATE_H__ */
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