1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4     (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
6 
7 Copyright (c) 2000-2013 Torus Knot Software Ltd
8 
9 Permission is hereby granted, free of charge, to any person obtaining a copy
10 of this software and associated documentation files (the "Software"), to deal
11 in the Software without restriction, including without limitation the rights
12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 copies of the Software, and to permit persons to whom the Software is
14 furnished to do so, subject to the following conditions:
15 
16 The above copyright notice and this permission notice shall be included in
17 all copies or substantial portions of the Software.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 THE SOFTWARE.
26 -----------------------------------------------------------------------------
27 */
28 #ifndef __GLSLESLinkProgram_H__
29 #define __GLSLESLinkProgram_H__
30 
31 #include "OgreGLES2Prerequisites.h"
32 #include "OgreGpuProgram.h"
33 #include "OgreHardwareVertexBuffer.h"
34 #include "OgreGLSLESProgramCommon.h"
35 #include "OgreGLES2ManagedResource.h"
36 
37 namespace Ogre {
38 
39     class GLSLESGpuProgram;
40 
41 	/** C++ encapsulation of GLSL ES Program Object
42 
43 	*/
44 
45 	class _OgreGLES2Export GLSLESLinkProgram : public GLSLESProgramCommon MANAGED_RESOURCE
46 	{
47 	protected:
extractLayoutQualifiers(void)48         virtual void extractLayoutQualifiers(void) {}
49 
50 		/// Compiles and links the vertex and fragment programs
51 		virtual void compileAndLink(void);
52         /// Put a program in use
53         virtual void _useProgram(void);
54 
55 		void buildGLUniformReferences(void);
56 
57 #if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID
58         /** See AndroidResource. */
59         virtual void notifyOnContextLost();
60 
61         /** See AndroidResource. */
62         virtual void notifyOnContextReset();
63 #endif
64 
65 	public:
66 		/// Constructor should only be used by GLSLESLinkProgramManager
67 		GLSLESLinkProgram(GLSLESGpuProgram* vertexProgram, GLSLESGpuProgram* fragmentProgram);
68 		virtual ~GLSLESLinkProgram(void);
69 
70 		/** Makes a program object active by making sure it is linked and then putting it in use.
71 		*/
72 		void activate(void);
73 
74 		/** Updates program object uniforms using data from GpuProgramParameters.
75 		normally called by GLSLESGpuProgram::bindParameters() just before rendering occurs.
76 		*/
77 		virtual void updateUniforms(GpuProgramParametersSharedPtr params, uint16 mask, GpuProgramType fromProgType);
78 		/** Updates program object uniform blocks using data from GpuProgramParameters.
79          normally called by GLSLGpuProgram::bindParameters() just before rendering occurs.
80          */
81 		virtual void updateUniformBlocks(GpuProgramParametersSharedPtr params, uint16 mask, GpuProgramType fromProgType);
82 		/** Updates program object uniforms using data from pass iteration GpuProgramParameters.
83 		normally called by GLSLESGpuProgram::bindMultiPassParameters() just before multi pass rendering occurs.
84 		*/
85 		virtual void updatePassIterationUniforms(GpuProgramParametersSharedPtr params);
86 	};
87 
88 }
89 
90 #endif // __GLSLESLinkProgram_H__
91