dae02a99a5
Instead of storing all of the feature function pointers in the driver specific data of the CoglContext they are now all stored directly in CoglContext. There is a single header containing the description of the functions which gets included by cogl-context.h. There is a single function in cogl-feature-private.c to check for all of these functions. The name of the function pointer variables have been changed from ctx->drv.pf_glWhatever to just ctx->glWhatever. The feature flags that get set when an extension is available are now separated from the table of extensions. This is necessary because different extensions can mean different things on GLES and GL. For example, having access to glMapBuffer implies read and write support on GL but only write support on GLES. The flags are instead set in the driver specific init function by checking whether the function pointers were successfully resolved. _cogl_feature_check has been changed to assume the feature is supported if any of the listed extensions are available instead of requiring all of them. This makes it more convenient to specify alternate names for the extension. Nothing else had previously listed more than one name for an extension so this shouldn't cause any problems.
439 lines
18 KiB
C
439 lines
18 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, 2011 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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/* This is included multiple times with different definitions for
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* these macros. The macros are given the following arguments:
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*
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* COGL_EXT_BEGIN:
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*
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* @name: a unique symbol name for this feature
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*
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* @min_gl_major: the major part of the minimum GL version where these
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* functions are available in core, or 255 if it isn't available in
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* any version.
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* @min_gl_minor: the minor part of the minimum GL version where these
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* functions are available in core, or 255 if it isn't available in
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* any version.
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*
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* @gles_availability: flags to specify which versions of GLES the
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* functions are available in. Should be a combination of
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* COGL_EXT_IN_GLES and COGL_EXT_IN_GLES2.
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*
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* @extension_suffixes: A zero-separated list of suffixes in a
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* string. These are appended to the extension name to get a complete
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* extension name to try. The suffix is also appended to all of the
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* function names. The suffix can optionally include a ':' to specify
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* an alternate suffix for the function names.
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*
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* @extension_names: A list of extension names to try. If any of these
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* extensions match then it will be used.
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*/
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COGL_EXT_BEGIN (offscreen,
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255, 255,
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COGL_EXT_IN_GLES2,
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/* for some reason the ARB version of this
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extension doesn't have an ARB suffix for the
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functions */
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"ARB:\0EXT\0OES\0",
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"framebuffer_object\0")
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COGL_EXT_FUNCTION (void, glGenRenderbuffers,
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(GLsizei n,
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GLuint *renderbuffers))
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COGL_EXT_FUNCTION (void, glDeleteRenderbuffers,
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(GLsizei n,
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const GLuint *renderbuffers))
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COGL_EXT_FUNCTION (void, glBindRenderbuffer,
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(GLenum target,
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GLuint renderbuffer))
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COGL_EXT_FUNCTION (void, glRenderbufferStorage,
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(GLenum target,
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GLenum internalformat,
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GLsizei width,
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GLsizei height))
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COGL_EXT_FUNCTION (void, glGenFramebuffers,
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(GLsizei n,
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GLuint *framebuffers))
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COGL_EXT_FUNCTION (void, glBindFramebuffer,
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(GLenum target,
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GLuint framebuffer))
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COGL_EXT_FUNCTION (void, glFramebufferTexture2D,
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(GLenum target,
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GLenum attachment,
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GLenum textarget,
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GLuint texture,
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GLint level))
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COGL_EXT_FUNCTION (void, glFramebufferRenderbuffer,
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(GLenum target,
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GLenum attachment,
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GLenum renderbuffertarget,
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GLuint renderbuffer))
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COGL_EXT_FUNCTION (GLenum, glCheckFramebufferStatus,
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(GLenum target))
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COGL_EXT_FUNCTION (void, glDeleteFramebuffers,
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(GLsizei n,
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const GLuint *framebuffers))
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COGL_EXT_FUNCTION (void, glGenerateMipmap,
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(GLenum target))
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COGL_EXT_FUNCTION (void, glGetFramebufferAttachmentParameteriv,
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(GLenum target,
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GLenum attachment,
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GLenum pname,
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GLint *params))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (offscreen_blit, 255, 255,
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0, /* not in either GLES */
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"EXT\0ANGLE\0",
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"framebuffer_blit\0")
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COGL_EXT_FUNCTION (void, glBlitFramebuffer,
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(GLint srcX0,
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GLint srcY0,
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GLint srcX1,
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GLint srcY1,
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GLint dstX0,
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GLint dstY0,
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GLint dstX1,
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GLint dstY1,
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GLbitfield mask,
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GLenum filter))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (offscreen_multisample, 255, 255,
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0, /* not in either GLES */
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"EXT\0",
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"framebuffer_multisample\0")
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COGL_EXT_FUNCTION (void, glRenderbufferStorageMultisample,
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(GLenum target,
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GLsizei samples,
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GLenum internalformat,
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GLsizei width,
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GLsizei height))
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COGL_EXT_END ()
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/* ARB_fragment_program */
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COGL_EXT_BEGIN (arbfp, 255, 255,
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0, /* not in either GLES */
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"ARB\0",
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"fragment_program\0")
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COGL_EXT_FUNCTION (void, glGenPrograms,
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(GLsizei n,
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GLuint *programs))
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COGL_EXT_FUNCTION (void, glDeletePrograms,
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(GLsizei n,
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GLuint *programs))
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COGL_EXT_FUNCTION (void, glBindProgram,
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(GLenum target,
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GLuint program))
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COGL_EXT_FUNCTION (void, glProgramString,
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(GLenum target,
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GLenum format,
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GLsizei len,
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const void *program))
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COGL_EXT_FUNCTION (void, glProgramLocalParameter4fv,
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(GLenum target,
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GLuint index,
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GLfloat *params))
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COGL_EXT_END ()
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/* The function names in OpenGL 2.0 are different so we can't easily
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just check for GL 2.0 */
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COGL_EXT_BEGIN (shaders_glsl, 2, 0,
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COGL_EXT_IN_GLES2,
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"\0",
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"\0")
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COGL_EXT_FUNCTION (GLuint, glCreateProgram,
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(void))
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COGL_EXT_FUNCTION (GLuint, glCreateShader,
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(GLenum shaderType))
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COGL_EXT_FUNCTION (void, glShaderSource,
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(GLuint shader,
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GLsizei count,
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const GLchar **string,
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const GLint *length))
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COGL_EXT_FUNCTION (void, glCompileShader,
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(GLuint shader))
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COGL_EXT_FUNCTION (void, glDeleteShader,
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(GLuint shader))
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COGL_EXT_FUNCTION (void, glAttachShader,
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(GLuint program,
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GLuint shader))
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COGL_EXT_FUNCTION (void, glLinkProgram,
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(GLuint program))
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COGL_EXT_FUNCTION (void, glUseProgram,
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(GLuint program))
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COGL_EXT_FUNCTION (GLint, glGetUniformLocation,
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(GLuint program,
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const GLchar *name))
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COGL_EXT_FUNCTION (void, glDeleteProgram,
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(GLuint program))
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COGL_EXT_FUNCTION (void, glGetShaderInfoLog,
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(GLuint shader,
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GLsizei maxLength,
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GLsizei *length,
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GLchar *infoLog))
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COGL_EXT_FUNCTION (void, glGetShaderiv,
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(GLuint shader,
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GLenum pname,
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GLint *params))
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COGL_EXT_FUNCTION (void, glVertexAttribPointer,
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(GLuint index,
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GLint size,
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GLenum type,
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GLboolean normalized,
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GLsizei stride,
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const GLvoid *pointer))
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COGL_EXT_FUNCTION (void, glEnableVertexAttribArray,
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(GLuint index))
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COGL_EXT_FUNCTION (void, glDisableVertexAttribArray,
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(GLuint index))
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COGL_EXT_FUNCTION (void, glUniform1f,
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(GLint location,
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GLfloat v0))
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COGL_EXT_FUNCTION (void, glUniform2f,
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(GLint location,
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GLfloat v0,
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GLfloat v1))
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COGL_EXT_FUNCTION (void, glUniform3f,
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(GLint location,
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GLfloat v0,
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GLfloat v1,
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GLfloat v2))
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COGL_EXT_FUNCTION (void, glUniform4f,
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(GLint location,
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GLfloat v0,
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GLfloat v1,
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GLfloat v2,
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GLfloat v3))
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COGL_EXT_FUNCTION (void, glUniform1fv,
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(GLint location,
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GLsizei count,
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const GLfloat * value))
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COGL_EXT_FUNCTION (void, glUniform2fv,
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(GLint location,
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GLsizei count,
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const GLfloat * value))
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COGL_EXT_FUNCTION (void, glUniform3fv,
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(GLint location,
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GLsizei count,
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const GLfloat * value))
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COGL_EXT_FUNCTION (void, glUniform4fv,
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(GLint location,
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GLsizei count,
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const GLfloat * value))
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COGL_EXT_FUNCTION (void, glUniform1i,
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(GLint location,
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GLint v0))
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COGL_EXT_FUNCTION (void, glUniform2i,
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(GLint location,
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GLint v0,
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GLint v1))
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COGL_EXT_FUNCTION (void, glUniform3i,
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(GLint location,
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GLint v0,
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GLint v1,
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GLint v2))
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COGL_EXT_FUNCTION (void, glUniform4i,
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(GLint location,
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GLint v0,
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GLint v1,
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GLint v2,
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GLint v3))
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COGL_EXT_FUNCTION (void, glUniform1iv,
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(GLint location,
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GLsizei count,
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const GLint * value))
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COGL_EXT_FUNCTION (void, glUniform2iv,
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(GLint location,
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GLsizei count,
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const GLint * value))
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COGL_EXT_FUNCTION (void, glUniform3iv,
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(GLint location,
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GLsizei count,
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const GLint * value))
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COGL_EXT_FUNCTION (void, glUniform4iv,
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(GLint location,
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GLsizei count,
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const GLint * value))
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COGL_EXT_FUNCTION (void, glUniformMatrix2fv,
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(GLint location,
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GLsizei count,
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GLboolean transpose,
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const GLfloat *value))
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COGL_EXT_FUNCTION (void, glUniformMatrix3fv,
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(GLint location,
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GLsizei count,
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GLboolean transpose,
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const GLfloat *value))
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COGL_EXT_FUNCTION (void, glUniformMatrix4fv,
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(GLint location,
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GLsizei count,
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GLboolean transpose,
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const GLfloat *value))
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COGL_EXT_FUNCTION (void, glGetProgramiv,
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(GLuint program,
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GLenum pname,
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GLint *params))
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COGL_EXT_FUNCTION (void, glGetProgramInfoLog,
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(GLuint program,
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GLsizei bufSize,
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GLsizei *length,
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GLchar *infoLog))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (vbos, 1, 5,
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COGL_EXT_IN_GLES |
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COGL_EXT_IN_GLES2,
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"ARB\0",
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"vertex_buffer_object\0")
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COGL_EXT_FUNCTION (void, glGenBuffers,
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(GLuint n,
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GLuint *buffers))
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COGL_EXT_FUNCTION (void, glBindBuffer,
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(GLenum target,
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GLuint buffer))
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COGL_EXT_FUNCTION (void, glBufferData,
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(GLenum target,
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GLsizeiptr size,
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const GLvoid *data,
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GLenum usage))
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COGL_EXT_FUNCTION (void, glBufferSubData,
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(GLenum target,
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GLintptr offset,
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GLsizeiptr size,
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const GLvoid *data))
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COGL_EXT_FUNCTION (void, glDeleteBuffers,
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(GLsizei n,
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const GLuint *buffers))
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COGL_EXT_END ()
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/* GLES doesn't support mapping buffers in core so this has to be a
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separate check */
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COGL_EXT_BEGIN (map_vbos, 1, 5,
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0, /* not in GLES core */
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"ARB\0OES\0",
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"vertex_buffer_object\0mapbuffer\0")
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COGL_EXT_FUNCTION (void *, glMapBuffer,
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(GLenum target,
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GLenum access))
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COGL_EXT_FUNCTION (GLboolean, glUnmapBuffer,
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(GLenum target))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (draw_range_elements, 1, 2,
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0, /* not in either GLES */
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"\0",
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"\0")
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COGL_EXT_FUNCTION (void, glDrawRangeElements,
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(GLenum mode,
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GLuint start,
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GLuint end,
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GLsizei count,
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GLenum type,
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const GLvoid *indices))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (blending, 1, 2,
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COGL_EXT_IN_GLES2,
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"\0",
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"\0")
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COGL_EXT_FUNCTION (void, glBlendEquation,
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(GLenum mode))
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COGL_EXT_FUNCTION (void, glBlendColor,
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(GLclampf red,
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GLclampf green,
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GLclampf blue,
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GLclampf alpha))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (texture_3d, 1, 2,
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0, /* not in either GLES */
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"OES\0",
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"texture_3D\0")
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COGL_EXT_FUNCTION (void, glTexImage3D,
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(GLenum target, GLint level,
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GLint internalFormat,
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GLsizei width, GLsizei height,
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GLsizei depth, GLint border,
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GLenum format, GLenum type,
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const GLvoid *pixels))
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COGL_EXT_FUNCTION (void, glTexSubImage3D,
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(GLenum target, GLint level,
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GLint xoffset, GLint yoffset,
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GLint zoffset, GLsizei width,
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GLsizei height, GLsizei depth,
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GLenum format,
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GLenum type, const GLvoid *pixels))
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COGL_EXT_END ()
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/* Available in GL 1.3, the multitexture extension or GLES. These are
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required */
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COGL_EXT_BEGIN (multitexture, 1, 3,
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COGL_EXT_IN_GLES |
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COGL_EXT_IN_GLES2,
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"ARB\0",
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"multitexture\0")
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COGL_EXT_FUNCTION (void, glActiveTexture,
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(GLenum texture))
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COGL_EXT_FUNCTION (void, glClientActiveTexture,
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(GLenum texture))
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COGL_EXT_END ()
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/* Optional, declared in 1.4 or GLES 1.2 */
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COGL_EXT_BEGIN (blend_func_separate, 1, 4,
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COGL_EXT_IN_GLES2,
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"EXT\0",
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"blend_func_separate\0")
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COGL_EXT_FUNCTION (void, glBlendFuncSeparate,
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(GLenum srcRGB,
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GLenum dstRGB,
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GLenum srcAlpha,
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GLenum dstAlpha))
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COGL_EXT_END ()
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/* Optional, declared in 2.0 */
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COGL_EXT_BEGIN (blend_equation_separate, 2, 0,
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COGL_EXT_IN_GLES2,
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"EXT\0",
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"blend_equation_separate\0")
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COGL_EXT_FUNCTION (void, glBlendEquationSeparate,
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(GLenum modeRGB,
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GLenum modeAlpha))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (EGL_image, 255, 255,
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0, /* not in either GLES */
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"OES\0",
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"EGL_image\0")
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COGL_EXT_FUNCTION (void, glEGLImageTargetTexture2D,
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(GLenum target,
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GLeglImageOES image))
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COGL_EXT_FUNCTION (void, glEGLImageTargetRenderbufferStorage,
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(GLenum target,
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GLeglImageOES image))
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COGL_EXT_END ()
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