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763c1de2ab
Some drivers have good support for GLSL but don't have the complete set of features needed to advertise GL 2.0 support. We should accept the three old GLSL extensions (GL_ARB_shader_objects, GL_ARB_vertex_shader and GL_ARB_fragment_shader) to support shaders on these drivers. This patch splits the shader functions into four sections :- those that are provided only in GL 2.0, those that have the same name in the shader objects extension, those that are provided by the vertex shader extension (they all share the same name) and those that have a different name in the shader objects extension. If GL 2.0 is not supported but all three of the extensions are then the pointers to the GL2-only functions will be replaced to point to the equivalent functions from the extensions. That way the rest of the Cogl source doesn't have to worry about the name differences. https://bugzilla.gnome.org/show_bug.cgi?id=677078 Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 71ecb51bd20dc3053b4221961b57e5a2b1029bdf)
267 lines
10 KiB
C
267 lines
10 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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/* The functions in this file are part of the core GL,GLES1 and GLES2 apis */
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#include "cogl-core-functions.h"
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/* The functions in this file are core to GLES1 only but may also be
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* extensions available for GLES2 and GL */
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#include "cogl-in-gles1-core-functions.h"
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/* The functions in this file are core to GLES2 only but
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* may be extensions for GLES1 and GL */
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#include "cogl-in-gles2-core-functions.h"
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/* The functions in this file are core to GLES1 and GLES2 but not core
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* to GL but they may be extensions available for GL */
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#include "cogl-in-gles-core-functions.h"
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/* These are fixed-function APIs core to GL and GLES1 */
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#include "cogl-fixed-functions.h"
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/* These are GLSL shader APIs core to GL 2.0 and GLES2 */
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#include "cogl-glsl-functions.h"
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/* These are the core GL functions which are only available in big
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GL */
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COGL_EXT_BEGIN (only_in_big_gl,
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0, 0,
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0, /* not in GLES */
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"\0",
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"\0")
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COGL_EXT_FUNCTION (void, glGetTexLevelParameteriv,
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(GLenum target, GLint level,
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GLenum pname, GLint *params))
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COGL_EXT_FUNCTION (void, glGetTexImage,
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(GLenum target, GLint level,
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GLenum format, GLenum type,
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GLvoid *pixels))
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COGL_EXT_FUNCTION (void, glClipPlane,
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(GLenum plane, const double *equation))
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COGL_EXT_FUNCTION (void, glDepthRange,
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(double near_val, double far_val))
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COGL_EXT_FUNCTION (void, glDrawBuffer,
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(GLenum mode))
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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 (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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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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/* 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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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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COGL_EXT_BEGIN (framebuffer_discard, 255, 255,
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0, /* not in either GLES */
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"EXT\0",
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"framebuffer_discard\0")
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COGL_EXT_FUNCTION (void, glDiscardFramebuffer,
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(GLenum target,
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GLsizei numAttachments,
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const GLenum *attachments))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (IMG_multisampled_render_to_texture, 255, 255,
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0, /* not in either GLES */
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"\0",
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"IMG_multisampled_render_to_texture\0")
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COGL_EXT_FUNCTION (void, glRenderbufferStorageMultisampleIMG,
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(GLenum target,
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GLsizei samples,
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GLenum internal_format,
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GLsizei width,
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GLsizei height))
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COGL_EXT_FUNCTION (void, glFramebufferTexture2DMultisampleIMG,
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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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GLsizei samples))
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COGL_EXT_END ()
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COGL_EXT_BEGIN (ARB_sampler_objects, 255, 255,
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0, /* not in either GLES */
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"ARB:\0",
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"sampler_objects\0")
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COGL_EXT_FUNCTION (void, glGenSamplers,
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(GLsizei count,
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GLuint *samplers))
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COGL_EXT_FUNCTION (void, glDeleteSamplers,
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(GLsizei count,
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const GLuint *samplers))
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COGL_EXT_FUNCTION (void, glBindSampler,
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(GLuint unit,
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GLuint sampler))
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COGL_EXT_FUNCTION (void, glSamplerParameteri,
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(GLuint sampler,
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GLenum pname,
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GLint param))
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COGL_EXT_END ()
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/* These only list functions that come from the old GLSL extensions.
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* Functions that are common to the extensions and GLSL 2.0 should
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* instead be listed in cogl-glsl-functions.h */
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COGL_EXT_BEGIN (shader_objects, 255, 255,
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0, /* not in either GLES */
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"ARB\0",
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"shader_objects")
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COGL_EXT_FUNCTION (GLuint, glCreateProgramObject,
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(void))
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COGL_EXT_FUNCTION (GLuint, glCreateShaderObject,
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(GLenum shaderType))
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COGL_EXT_FUNCTION (void, glDeleteObject,
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(GLuint obj))
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COGL_EXT_FUNCTION (void, glAttachObject,
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(GLuint container, GLuint obj))
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COGL_EXT_FUNCTION (void, glUseProgramObject,
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(GLuint programObj))
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COGL_EXT_FUNCTION (void, glGetInfoLog,
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(GLuint obj,
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GLsizei maxLength,
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GLsizei *length,
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char *infoLog))
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COGL_EXT_FUNCTION (void, glGetObjectParameteriv,
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(GLuint obj,
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GLenum pname,
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GLint *params))
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COGL_EXT_FUNCTION (void, glDetachObject,
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(GLuint container, GLuint obj))
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COGL_EXT_FUNCTION (void, glGetAttachedObjects,
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(GLuint program,
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GLsizei maxcount,
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GLsizei* count,
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GLuint* shaders))
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COGL_EXT_END ()
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