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54735dec84
The coding style has for a long time said to avoid using redundant glib
data types such as gint or gchar etc because we feel that they make the
code look unnecessarily foreign to developers coming from outside of the
Gnome developer community.
Note: When we tried to find the historical rationale for the types we
just found that they were apparently only added for consistent syntax
highlighting which didn't seem that compelling.
Up until now we have been continuing to use some of the platform
specific type such as gint{8,16,32,64} and gsize but this patch switches
us over to using the standard c99 equivalents instead so we can further
ensure that our code looks familiar to the widest range of C developers
who might potentially contribute to Cogl.
So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this
switches all Cogl code to instead use the int{8,16,32,64}_t and
uint{8,16,32,64}_t c99 types instead.
Instead of gsize we now use size_t
For now we are not going to use the c99 _Bool type and instead we have
introduced a new CoglBool type to use instead of gboolean.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
138 lines
3.7 KiB
C
138 lines
3.7 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) 2009 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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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifndef COGL_BLEND_STRING_H
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#define COGL_BLEND_STRING_H
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#include <stdlib.h>
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#include <glib.h>
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typedef enum _CoglBlendStringContext
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{
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COGL_BLEND_STRING_CONTEXT_BLENDING,
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COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE
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} CoglBlendStringContext;
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/* NB: debug stringify code will get upset if these
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* are re-ordered */
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typedef enum _CoglBlendStringChannelMask
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{
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COGL_BLEND_STRING_CHANNEL_MASK_RGB,
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COGL_BLEND_STRING_CHANNEL_MASK_ALPHA,
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COGL_BLEND_STRING_CHANNEL_MASK_RGBA
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} CoglBlendStringChannelMask;
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typedef enum _CoglBlendStringColorSourceType
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{
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/* blending */
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COGL_BLEND_STRING_COLOR_SOURCE_SRC_COLOR,
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COGL_BLEND_STRING_COLOR_SOURCE_DST_COLOR,
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/* shared */
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COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT,
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/* texture combining */
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COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE,
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COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE_N,
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COGL_BLEND_STRING_COLOR_SOURCE_PRIMARY,
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COGL_BLEND_STRING_COLOR_SOURCE_PREVIOUS
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} CoglBlendStringColorSourceType;
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typedef struct _CoglBlendStringColorSourceInfo
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{
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CoglBlendStringColorSourceType type;
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const char *name;
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size_t name_len;
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} CoglBlendStringColorSourceInfo;
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typedef struct _CoglBlendStringColorSource
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{
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CoglBool is_zero;
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const CoglBlendStringColorSourceInfo *info;
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int texture; /* for the TEXTURE_N color source */
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CoglBool one_minus;
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CoglBlendStringChannelMask mask;
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} CoglBlendStringColorSource;
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typedef struct _CoglBlendStringFactor
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{
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CoglBool is_one;
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CoglBool is_src_alpha_saturate;
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CoglBool is_color;
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CoglBlendStringColorSource source;
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} CoglBlendStringFactor;
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typedef struct _CoglBlendStringArgument
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{
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CoglBlendStringColorSource source;
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CoglBlendStringFactor factor;
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} CoglBlendStringArgument;
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typedef enum _CoglBlendStringFunctionType
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{
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/* shared */
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COGL_BLEND_STRING_FUNCTION_ADD,
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/* texture combine only */
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COGL_BLEND_STRING_FUNCTION_REPLACE,
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COGL_BLEND_STRING_FUNCTION_MODULATE,
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COGL_BLEND_STRING_FUNCTION_ADD_SIGNED,
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COGL_BLEND_STRING_FUNCTION_INTERPOLATE,
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COGL_BLEND_STRING_FUNCTION_SUBTRACT,
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COGL_BLEND_STRING_FUNCTION_DOT3_RGB,
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COGL_BLEND_STRING_FUNCTION_DOT3_RGBA
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} CoglBlendStringFunctionType;
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typedef struct _CoglBlendStringFunctionInfo
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{
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enum _CoglBlendStringFunctionType type;
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const char *name;
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size_t name_len;
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int argc;
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} CoglBlendStringFunctionInfo;
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typedef struct _CoglBlendStringStatement
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{
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CoglBlendStringChannelMask mask;
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const CoglBlendStringFunctionInfo *function;
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CoglBlendStringArgument args[3];
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} CoglBlendStringStatement;
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CoglBool
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_cogl_blend_string_compile (const char *string,
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CoglBlendStringContext context,
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CoglBlendStringStatement *statements,
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GError **error);
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void
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_cogl_blend_string_split_rgba_statement (CoglBlendStringStatement *statement,
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CoglBlendStringStatement *rgb,
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CoglBlendStringStatement *a);
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#endif /* COGL_BLEND_STRING_H */
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