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mutter/cogl/cogl-ext-functions.h

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Move all of the GL function pointers directly to CoglContext 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.
2011-07-06 13:59:20 -04:00
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009, 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
/* This is included multiple times with different definitions for
* these macros. The macros are given the following arguments:
*
* COGL_EXT_BEGIN:
*
* @name: a unique symbol name for this feature
*
* @min_gl_major: the major part of the minimum GL version where these
* functions are available in core, or 255 if it isn't available in
* any version.
* @min_gl_minor: the minor part of the minimum GL version where these
* functions are available in core, or 255 if it isn't available in
* any version.
*
* @gles_availability: flags to specify which versions of GLES the
* functions are available in. Should be a combination of
* COGL_EXT_IN_GLES and COGL_EXT_IN_GLES2.
*
* @extension_suffixes: A zero-separated list of suffixes in a
* string. These are appended to the extension name to get a complete
* extension name to try. The suffix is also appended to all of the
* function names. The suffix can optionally include a ':' to specify
* an alternate suffix for the function names.
*
* @extension_names: A list of extension names to try. If any of these
* extensions match then it will be used.
*/
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 16:51:00 -04:00
/* These are the core GL functions which we assume will always be
available */
COGL_EXT_BEGIN (core,
0, 0,
COGL_EXT_IN_GLES | COGL_EXT_IN_GLES2,
"\0",
"\0")
COGL_EXT_FUNCTION (void, glBindTexture,
(GLenum target, GLuint texture))
COGL_EXT_FUNCTION (void, glBlendFunc,
(GLenum sfactor, GLenum dfactor))
COGL_EXT_FUNCTION (void, glClear,
(GLbitfield mask))
COGL_EXT_FUNCTION (void, glClearColor,
(GLclampf red,
GLclampf green,
GLclampf blue,
GLclampf alpha))
COGL_EXT_FUNCTION (void, glClearStencil,
(GLint s))
COGL_EXT_FUNCTION (void, glColorMask,
(GLboolean red,
GLboolean green,
GLboolean blue,
GLboolean alpha))
COGL_EXT_FUNCTION (void, glCopyTexSubImage2D,
(GLenum target,
GLint level,
GLint xoffset,
GLint yoffset,
GLint x,
GLint y,
GLsizei width,
GLsizei height))
COGL_EXT_FUNCTION (void, glDeleteTextures,
(GLsizei n, const GLuint* textures))
COGL_EXT_FUNCTION (void, glDepthFunc,
(GLenum func))
COGL_EXT_FUNCTION (void, glDepthMask,
(GLboolean flag))
COGL_EXT_FUNCTION (void, glDisable,
(GLenum cap))
COGL_EXT_FUNCTION (void, glDrawArrays,
(GLenum mode, GLint first, GLsizei count))
COGL_EXT_FUNCTION (void, glDrawElements,
(GLenum mode,
GLsizei count,
GLenum type,
const GLvoid* indices))
COGL_EXT_FUNCTION (void, glEnable,
(GLenum cap))
COGL_EXT_FUNCTION (void, glFinish,
(void))
COGL_EXT_FUNCTION (void, glFlush,
(void))
COGL_EXT_FUNCTION (void, glFrontFace,
(GLenum mode))
COGL_EXT_FUNCTION (void, glGenTextures,
(GLsizei n, GLuint* textures))
COGL_EXT_FUNCTION (GLenum, glGetError,
(void))
COGL_EXT_FUNCTION (void, glGetIntegerv,
(GLenum pname, GLint* params))
COGL_EXT_FUNCTION (const GLubyte*, glGetString,
(GLenum name))
COGL_EXT_FUNCTION (void, glHint,
(GLenum target, GLenum mode))
COGL_EXT_FUNCTION (GLboolean, glIsTexture,
(GLuint texture))
COGL_EXT_FUNCTION (void, glPixelStorei,
(GLenum pname, GLint param))
COGL_EXT_FUNCTION (void, glReadPixels,
(GLint x,
GLint y,
GLsizei width,
GLsizei height,
GLenum format,
GLenum type,
GLvoid* pixels))
COGL_EXT_FUNCTION (void, glScissor,
(GLint x, GLint y, GLsizei width, GLsizei height))
COGL_EXT_FUNCTION (void, glStencilFunc,
(GLenum func, GLint ref, GLuint mask))
COGL_EXT_FUNCTION (void, glStencilMask,
(GLuint mask))
COGL_EXT_FUNCTION (void, glStencilOp,
(GLenum fail, GLenum zfail, GLenum zpass))
COGL_EXT_FUNCTION (void, glTexImage2D,
(GLenum target,
GLint level,
GLint internalformat,
GLsizei width,
GLsizei height,
GLint border,
GLenum format,
GLenum type,
const GLvoid* pixels))
COGL_EXT_FUNCTION (void, glTexParameterfv,
(GLenum target, GLenum pname, const GLfloat* params))
COGL_EXT_FUNCTION (void, glTexParameteri,
(GLenum target, GLenum pname, GLint param))
COGL_EXT_FUNCTION (void, glTexSubImage2D,
(GLenum target,
GLint level,
GLint xoffset,
GLint yoffset,
GLsizei width,
GLsizei height,
GLenum format,
GLenum type,
const GLvoid* pixels))
COGL_EXT_FUNCTION (void, glViewport,
(GLint x, GLint y, GLsizei width, GLsizei height))
COGL_EXT_END ()
/* These are the core GL functions which are available when the API
supports fixed-function (ie, GL and GLES1.1) */
COGL_EXT_BEGIN (fixed_function_core,
0, 0,
COGL_EXT_IN_GLES,
"\0",
"\0")
COGL_EXT_FUNCTION (void, glAlphaFunc,
(GLenum func, GLclampf ref))
COGL_EXT_FUNCTION (void, glFogf,
(GLenum pname, GLfloat param))
COGL_EXT_FUNCTION (void, glFogfv,
(GLenum pname, const GLfloat *params))
COGL_EXT_FUNCTION (void, glLoadMatrixf,
(const GLfloat *m))
COGL_EXT_FUNCTION (void, glMaterialfv,
(GLenum face, GLenum pname, const GLfloat *params))
COGL_EXT_FUNCTION (void, glPointSize,
(GLfloat size))
COGL_EXT_FUNCTION (void, glTexEnvfv,
(GLenum target, GLenum pname, const GLfloat *params))
COGL_EXT_FUNCTION (void, glColor4ub,
(GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha))
COGL_EXT_FUNCTION (void, glColorPointer,
(GLint size,
GLenum type,
GLsizei stride,
const GLvoid *pointer))
COGL_EXT_FUNCTION (void, glDisableClientState,
(GLenum array))
COGL_EXT_FUNCTION (void, glEnableClientState,
(GLenum array))
COGL_EXT_FUNCTION (void, glLoadIdentity,
(void))
COGL_EXT_FUNCTION (void, glMatrixMode,
(GLenum mode))
COGL_EXT_FUNCTION (void, glNormalPointer,
(GLenum type, GLsizei stride, const GLvoid *pointer))
COGL_EXT_FUNCTION (void, glTexCoordPointer,
(GLint size,
GLenum type,
GLsizei stride,
const GLvoid *pointer))
COGL_EXT_FUNCTION (void, glTexEnvi,
(GLenum target,
GLenum pname,
GLint param))
COGL_EXT_FUNCTION (void, glVertexPointer,
(GLint size,
GLenum type,
GLsizei stride,
const GLvoid *pointer))
COGL_EXT_END ()
/* These are the core GL functions which are only available in big
GL */
COGL_EXT_BEGIN (only_in_big_gl,
0, 0,
0, /* not in GLES */
"\0",
"\0")
COGL_EXT_FUNCTION (void, glGetTexLevelParameteriv,
(GLenum target, GLint level,
GLenum pname, GLint *params))
COGL_EXT_FUNCTION (void, glGetTexImage,
(GLenum target, GLint level,
GLenum format, GLenum type,
GLvoid *pixels))
COGL_EXT_FUNCTION (void, glClipPlane,
(GLenum plane, const double *equation))
COGL_EXT_FUNCTION (void, glDepthRange,
(double near_val, double far_val))
COGL_EXT_FUNCTION (void, glDrawBuffer,
(GLenum mode))
COGL_EXT_END ()
/* These functions are only available in GLES and are used as
replacements for some GL equivalents that only accept double
arguments */
COGL_EXT_BEGIN (only_in_gles1,
255, 255,
COGL_EXT_IN_GLES,
"\0",
"\0")
COGL_EXT_FUNCTION (void, glClipPlanef,
(GLenum plane, const GLfloat *equation))
COGL_EXT_END ()
COGL_EXT_BEGIN (only_in_both_gles,
255, 255,
COGL_EXT_IN_GLES |
COGL_EXT_IN_GLES2,
"\0",
"\0")
COGL_EXT_FUNCTION (void, glDepthRangef,
(GLfloat near_val, GLfloat far_val))
COGL_EXT_END ()
Move all of the GL function pointers directly to CoglContext 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.
2011-07-06 13:59:20 -04:00
COGL_EXT_BEGIN (offscreen,
255, 255,
COGL_EXT_IN_GLES2,
/* for some reason the ARB version of this
extension doesn't have an ARB suffix for the
functions */
"ARB:\0EXT\0OES\0",
"framebuffer_object\0")
COGL_EXT_FUNCTION (void, glGenRenderbuffers,
(GLsizei n,
GLuint *renderbuffers))
COGL_EXT_FUNCTION (void, glDeleteRenderbuffers,
(GLsizei n,
const GLuint *renderbuffers))
COGL_EXT_FUNCTION (void, glBindRenderbuffer,
(GLenum target,
GLuint renderbuffer))
COGL_EXT_FUNCTION (void, glRenderbufferStorage,
(GLenum target,
GLenum internalformat,
GLsizei width,
GLsizei height))
COGL_EXT_FUNCTION (void, glGenFramebuffers,
(GLsizei n,
GLuint *framebuffers))
COGL_EXT_FUNCTION (void, glBindFramebuffer,
(GLenum target,
GLuint framebuffer))
COGL_EXT_FUNCTION (void, glFramebufferTexture2D,
(GLenum target,
GLenum attachment,
GLenum textarget,
GLuint texture,
GLint level))
COGL_EXT_FUNCTION (void, glFramebufferRenderbuffer,
(GLenum target,
GLenum attachment,
GLenum renderbuffertarget,
GLuint renderbuffer))
COGL_EXT_FUNCTION (GLenum, glCheckFramebufferStatus,
(GLenum target))
COGL_EXT_FUNCTION (void, glDeleteFramebuffers,
(GLsizei n,
const GLuint *framebuffers))
COGL_EXT_FUNCTION (void, glGenerateMipmap,
(GLenum target))
COGL_EXT_FUNCTION (void, glGetFramebufferAttachmentParameteriv,
(GLenum target,
GLenum attachment,
GLenum pname,
GLint *params))
COGL_EXT_END ()
COGL_EXT_BEGIN (offscreen_blit, 255, 255,
0, /* not in either GLES */
"EXT\0ANGLE\0",
"framebuffer_blit\0")
COGL_EXT_FUNCTION (void, glBlitFramebuffer,
(GLint srcX0,
GLint srcY0,
GLint srcX1,
GLint srcY1,
GLint dstX0,
GLint dstY0,
GLint dstX1,
GLint dstY1,
GLbitfield mask,
GLenum filter))
COGL_EXT_END ()
COGL_EXT_BEGIN (offscreen_multisample, 255, 255,
0, /* not in either GLES */
"EXT\0",
"framebuffer_multisample\0")
COGL_EXT_FUNCTION (void, glRenderbufferStorageMultisample,
(GLenum target,
GLsizei samples,
GLenum internalformat,
GLsizei width,
GLsizei height))
COGL_EXT_END ()
/* ARB_fragment_program */
COGL_EXT_BEGIN (arbfp, 255, 255,
0, /* not in either GLES */
"ARB\0",
"fragment_program\0")
COGL_EXT_FUNCTION (void, glGenPrograms,
(GLsizei n,
GLuint *programs))
COGL_EXT_FUNCTION (void, glDeletePrograms,
(GLsizei n,
GLuint *programs))
COGL_EXT_FUNCTION (void, glBindProgram,
(GLenum target,
GLuint program))
COGL_EXT_FUNCTION (void, glProgramString,
(GLenum target,
GLenum format,
GLsizei len,
const void *program))
COGL_EXT_FUNCTION (void, glProgramLocalParameter4fv,
(GLenum target,
GLuint index,
GLfloat *params))
COGL_EXT_END ()
/* The function names in OpenGL 2.0 are different so we can't easily
just check for GL 2.0 */
COGL_EXT_BEGIN (shaders_glsl, 2, 0,
COGL_EXT_IN_GLES2,
"\0",
"\0")
COGL_EXT_FUNCTION (GLuint, glCreateProgram,
(void))
COGL_EXT_FUNCTION (GLuint, glCreateShader,
(GLenum shaderType))
COGL_EXT_FUNCTION (void, glShaderSource,
(GLuint shader,
GLsizei count,
const GLchar **string,
const GLint *length))
COGL_EXT_FUNCTION (void, glCompileShader,
(GLuint shader))
COGL_EXT_FUNCTION (void, glDeleteShader,
(GLuint shader))
COGL_EXT_FUNCTION (void, glAttachShader,
(GLuint program,
GLuint shader))
COGL_EXT_FUNCTION (void, glLinkProgram,
(GLuint program))
COGL_EXT_FUNCTION (void, glUseProgram,
(GLuint program))
COGL_EXT_FUNCTION (GLint, glGetUniformLocation,
(GLuint program,
const GLchar *name))
COGL_EXT_FUNCTION (void, glDeleteProgram,
(GLuint program))
COGL_EXT_FUNCTION (void, glGetShaderInfoLog,
(GLuint shader,
GLsizei maxLength,
GLsizei *length,
GLchar *infoLog))
COGL_EXT_FUNCTION (void, glGetShaderiv,
(GLuint shader,
GLenum pname,
GLint *params))
COGL_EXT_FUNCTION (void, glVertexAttribPointer,
(GLuint index,
GLint size,
GLenum type,
GLboolean normalized,
GLsizei stride,
const GLvoid *pointer))
COGL_EXT_FUNCTION (void, glEnableVertexAttribArray,
(GLuint index))
COGL_EXT_FUNCTION (void, glDisableVertexAttribArray,
(GLuint index))
COGL_EXT_FUNCTION (void, glUniform1f,
(GLint location,
GLfloat v0))
COGL_EXT_FUNCTION (void, glUniform2f,
(GLint location,
GLfloat v0,
GLfloat v1))
COGL_EXT_FUNCTION (void, glUniform3f,
(GLint location,
GLfloat v0,
GLfloat v1,
GLfloat v2))
COGL_EXT_FUNCTION (void, glUniform4f,
(GLint location,
GLfloat v0,
GLfloat v1,
GLfloat v2,
GLfloat v3))
COGL_EXT_FUNCTION (void, glUniform1fv,
(GLint location,
GLsizei count,
const GLfloat * value))
COGL_EXT_FUNCTION (void, glUniform2fv,
(GLint location,
GLsizei count,
const GLfloat * value))
COGL_EXT_FUNCTION (void, glUniform3fv,
(GLint location,
GLsizei count,
const GLfloat * value))
COGL_EXT_FUNCTION (void, glUniform4fv,
(GLint location,
GLsizei count,
const GLfloat * value))
COGL_EXT_FUNCTION (void, glUniform1i,
(GLint location,
GLint v0))
COGL_EXT_FUNCTION (void, glUniform2i,
(GLint location,
GLint v0,
GLint v1))
COGL_EXT_FUNCTION (void, glUniform3i,
(GLint location,
GLint v0,
GLint v1,
GLint v2))
COGL_EXT_FUNCTION (void, glUniform4i,
(GLint location,
GLint v0,
GLint v1,
GLint v2,
GLint v3))
COGL_EXT_FUNCTION (void, glUniform1iv,
(GLint location,
GLsizei count,
const GLint * value))
COGL_EXT_FUNCTION (void, glUniform2iv,
(GLint location,
GLsizei count,
const GLint * value))
COGL_EXT_FUNCTION (void, glUniform3iv,
(GLint location,
GLsizei count,
const GLint * value))
COGL_EXT_FUNCTION (void, glUniform4iv,
(GLint location,
GLsizei count,
const GLint * value))
COGL_EXT_FUNCTION (void, glUniformMatrix2fv,
(GLint location,
GLsizei count,
GLboolean transpose,
const GLfloat *value))
COGL_EXT_FUNCTION (void, glUniformMatrix3fv,
(GLint location,
GLsizei count,
GLboolean transpose,
const GLfloat *value))
COGL_EXT_FUNCTION (void, glUniformMatrix4fv,
(GLint location,
GLsizei count,
GLboolean transpose,
const GLfloat *value))
COGL_EXT_FUNCTION (void, glGetProgramiv,
(GLuint program,
GLenum pname,
GLint *params))
COGL_EXT_FUNCTION (void, glGetProgramInfoLog,
(GLuint program,
GLsizei bufSize,
GLsizei *length,
GLchar *infoLog))
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 16:51:00 -04:00
COGL_EXT_FUNCTION (void, glVertexAttrib4f,
(GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w))
COGL_EXT_FUNCTION (GLint, glGetAttribLocation,
(GLuint program, const GLchar *name))
Move all of the GL function pointers directly to CoglContext 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.
2011-07-06 13:59:20 -04:00
COGL_EXT_END ()
COGL_EXT_BEGIN (vbos, 1, 5,
COGL_EXT_IN_GLES |
COGL_EXT_IN_GLES2,
"ARB\0",
"vertex_buffer_object\0")
COGL_EXT_FUNCTION (void, glGenBuffers,
(GLuint n,
GLuint *buffers))
COGL_EXT_FUNCTION (void, glBindBuffer,
(GLenum target,
GLuint buffer))
COGL_EXT_FUNCTION (void, glBufferData,
(GLenum target,
GLsizeiptr size,
const GLvoid *data,
GLenum usage))
COGL_EXT_FUNCTION (void, glBufferSubData,
(GLenum target,
GLintptr offset,
GLsizeiptr size,
const GLvoid *data))
COGL_EXT_FUNCTION (void, glDeleteBuffers,
(GLsizei n,
const GLuint *buffers))
COGL_EXT_END ()
/* GLES doesn't support mapping buffers in core so this has to be a
separate check */
COGL_EXT_BEGIN (map_vbos, 1, 5,
0, /* not in GLES core */
"ARB\0OES\0",
"vertex_buffer_object\0mapbuffer\0")
COGL_EXT_FUNCTION (void *, glMapBuffer,
(GLenum target,
GLenum access))
COGL_EXT_FUNCTION (GLboolean, glUnmapBuffer,
(GLenum target))
COGL_EXT_END ()
COGL_EXT_BEGIN (blending, 1, 2,
COGL_EXT_IN_GLES2,
"\0",
"\0")
COGL_EXT_FUNCTION (void, glBlendEquation,
(GLenum mode))
COGL_EXT_FUNCTION (void, glBlendColor,
(GLclampf red,
GLclampf green,
GLclampf blue,
GLclampf alpha))
COGL_EXT_END ()
COGL_EXT_BEGIN (texture_3d, 1, 2,
0, /* not in either GLES */
"OES\0",
"texture_3D\0")
COGL_EXT_FUNCTION (void, glTexImage3D,
(GLenum target, GLint level,
GLint internalFormat,
GLsizei width, GLsizei height,
GLsizei depth, GLint border,
GLenum format, GLenum type,
const GLvoid *pixels))
COGL_EXT_FUNCTION (void, glTexSubImage3D,
(GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLint zoffset, GLsizei width,
GLsizei height, GLsizei depth,
GLenum format,
GLenum type, const GLvoid *pixels))
COGL_EXT_END ()
/* Available in GL 1.3, the multitexture extension or GLES. These are
required */
gles: don't check for glClientActiveTexture in cogl-ext-functions.h we had one multitexture feature that checked for the ARB_multitexture extension and if found it then expected to find glActiveTexture and glClientActiveTexture. The problem is that the multitexture extension is part of the core GLES 1 and 2 APIs except that for GLES2 there is no glClientActiveTexture function. By trying to handle it as one feature that meant that Cogl would fail to check the multitexture extension which is a hard requirement for Cogl. The reason this went unnoticed is because Cogl can indirectly end up linked to an OpenGL library via cairo and so we were finding a glClientActiveTexture symbol there. This highlights that we should probably stop using g_module_open (NULL) when checking features and instead we should use the module we opened in cogl-renderer.c.
2011-07-19 18:21:30 -04:00
COGL_EXT_BEGIN (multitexture_part0, 1, 3,
Move all of the GL function pointers directly to CoglContext 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.
2011-07-06 13:59:20 -04:00
COGL_EXT_IN_GLES |
COGL_EXT_IN_GLES2,
"ARB\0",
"multitexture\0")
COGL_EXT_FUNCTION (void, glActiveTexture,
(GLenum texture))
gles: don't check for glClientActiveTexture in cogl-ext-functions.h we had one multitexture feature that checked for the ARB_multitexture extension and if found it then expected to find glActiveTexture and glClientActiveTexture. The problem is that the multitexture extension is part of the core GLES 1 and 2 APIs except that for GLES2 there is no glClientActiveTexture function. By trying to handle it as one feature that meant that Cogl would fail to check the multitexture extension which is a hard requirement for Cogl. The reason this went unnoticed is because Cogl can indirectly end up linked to an OpenGL library via cairo and so we were finding a glClientActiveTexture symbol there. This highlights that we should probably stop using g_module_open (NULL) when checking features and instead we should use the module we opened in cogl-renderer.c.
2011-07-19 18:21:30 -04:00
COGL_EXT_END ()
COGL_EXT_BEGIN (multitexture_part1, 1, 3,
COGL_EXT_IN_GLES,
"ARB\0",
"multitexture\0")
Move all of the GL function pointers directly to CoglContext 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.
2011-07-06 13:59:20 -04:00
COGL_EXT_FUNCTION (void, glClientActiveTexture,
(GLenum texture))
COGL_EXT_END ()
/* Optional, declared in 1.4 or GLES 1.2 */
COGL_EXT_BEGIN (blend_func_separate, 1, 4,
COGL_EXT_IN_GLES2,
"EXT\0",
"blend_func_separate\0")
COGL_EXT_FUNCTION (void, glBlendFuncSeparate,
(GLenum srcRGB,
GLenum dstRGB,
GLenum srcAlpha,
GLenum dstAlpha))
COGL_EXT_END ()
/* Optional, declared in 2.0 */
COGL_EXT_BEGIN (blend_equation_separate, 2, 0,
COGL_EXT_IN_GLES2,
"EXT\0",
"blend_equation_separate\0")
COGL_EXT_FUNCTION (void, glBlendEquationSeparate,
(GLenum modeRGB,
GLenum modeAlpha))
COGL_EXT_END ()
COGL_EXT_BEGIN (EGL_image, 255, 255,
0, /* not in either GLES */
"OES\0",
"EGL_image\0")
COGL_EXT_FUNCTION (void, glEGLImageTargetTexture2D,
(GLenum target,
GLeglImageOES image))
COGL_EXT_FUNCTION (void, glEGLImageTargetRenderbufferStorage,
(GLenum target,
GLeglImageOES image))
COGL_EXT_END ()
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