1 #ifndef DALI_INTERNAL_GL_EXTENSION_H
2 #define DALI_INTERNAL_GL_EXTENSION_H
5 * Copyright (c) 2021 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
23 #include <GLES2/gl2.h>
24 #include <GLES2/gl2ext.h>
25 #include <GLES3/gl3.h>
34 * GlExtensions class provides GL extensions support
51 * If the GL extension is available this function discards specified data in attachments
52 * from being copied from the target to improve performance.
54 * Usage: GLenum attachments[] = { GL_DEPTH_ATTACHMENT, GL_STENCIL_ATTACHMENT };
55 * DiscardFrameBufferEXT(GL_FRAMEBUFFER, 2, attachments);
57 * @param target is usually GL_FRAMEBUFFER
58 * @param numAttachments is the count of attachments
59 * @param attachments is a pointer to the attachments
61 void DiscardFrameBuffer(GLenum target, GLsizei numAttachments, const GLenum* attachments);
65 * Returns the program object's executable bytecode.
66 * @param[in] program The program object's name/id
67 * @param[in] bufSize The maximum number of bytes that may be written into binary
68 * @param[out] length The actual number of bytes written into binary
69 * @param[out] binaryFormat The format of the program binary
70 * @param[out] binary The actual program bytecode
72 void GetProgramBinaryOES(GLuint program, GLsizei bufSize, GLsizei* length, GLenum* binaryFormat, GLvoid* binary);
76 * Loads a program object with a program binary previously returned from GetProgramBinaryOES
77 * @param[in] program The program object's name/id
78 * @param[in] binaryFormat The format of the program binary
79 * @param[in] binary The program bytecode
80 * @param[in] length The number of bytes in binary
82 void ProgramBinaryOES(GLuint program, GLenum binaryFormat, const GLvoid* binary, GLint length);
86 * Specify a boundary between passes when using advanced blend equations.
88 bool BlendBarrierKHR();
92 * Lazy Initialize extensions on first use
96 #ifdef GL_EXT_discard_framebuffer
97 PFNGLDISCARDFRAMEBUFFEREXTPROC mGlDiscardFramebuffer;
100 #ifdef GL_OES_get_program_binary
101 PFNGLGETPROGRAMBINARYOESPROC mGlGetProgramBinaryOES;
102 PFNGLPROGRAMBINARYOESPROC mGlProgramBinaryOES;
105 #ifdef GL_KHR_blend_equation_advanced
106 PFNGLBLENDBARRIERKHRPROC mBlendBarrierKHR;
112 } // namespace Adaptor
114 } // namespace Internal
118 #endif /* DALI_INTERNAL_GL_EXTENSION_H */