OGRE  1.12.4
Object-Oriented Graphics Rendering Engine
Ogre::GLSLESProgramPipeline Class Reference

Specialisation of HighLevelGpuProgram to provide support for OpenGL Shader Language (GLSL ES) for OpenGL ES 2.0. More...

#include <OgreGLSLESProgramPipeline.h>

+ Inheritance diagram for Ogre::GLSLESProgramPipeline:

Public Member Functions

 GLSLESProgramPipeline (GLSLESProgram *vertexProgram, GLSLESProgram *fragmentProgram)
 Constructor should only be used by GLSLESProgramPipelineManager. More...
 
virtual ~GLSLESProgramPipeline ()
 
void activate (void)
 Makes a program pipeline object active by making sure it is linked and then putting it in use. More...
 
void bindFixedAttributes (GLuint program)
 
void extractLayoutQualifiers (void)
 
GLSLESProgramgetFragmentProgram (void) const
 
uint getGLProgramHandle (void) const
 Get the GL Handle for the program object. More...
 
GLSLESProgramgetVertexProgram (void) const
 
bool isSkeletalAnimationIncluded (void) const
 Returns whether the linked program includes the required instructions to perform skeletal animation. More...
 
bool isUsingShader (GLSLShaderCommon *shader) const
 query if the program is using the given shader More...
 
void setSkeletalAnimationIncluded (bool included)
 Sets whether the linked program includes the required instructions to perform skeletal animation. More...
 
void updateUniformBlocks ()
 Updates program object uniform blocks using data from GpuProgramParameters. More...
 
virtual void updateUniforms (GpuProgramParametersSharedPtr params, uint16 mask, GpuProgramType fromProgType)
 Updates program pipeline object uniforms using data from GpuProgramParameters. More...
 

Static Public Member Functions

static int32 getFixedAttributeIndex (VertexElementSemantic semantic, uint index)
 Get the fixed attribute bindings normally used by GL for a semantic. More...
 
static void useTightAttributeLayout ()
 use alternate vertex attribute layout using only 8 vertex attributes More...
 

Detailed Description

Specialisation of HighLevelGpuProgram to provide support for OpenGL Shader Language (GLSL ES) for OpenGL ES 2.0.

Remarks
GLSL ES has no target assembler or entry point specification like DirectX 9 HLSL. Vertex and Fragment shaders only have one entry point called "main". When a shader is compiled, microcode is generated but can not be accessed by the application. GLSL ES also does not provide assembler low level output after compiling. The GL ES Render system assumes that the Gpu program is a GL Gpu program so GLSLESProgramPipeline will create a GLSLESGpuProgram that is subclassed from GLES2GpuProgram for the low level implementation. The GLES2Program class will create a shader and program object and compile the source but will not create a pipeline object. It's up to GLES2GpuProgram class to request a program pipeline object to link the program object to.
Note
GLSL ES supports multiple modular shader objects that can be attached to one program object to form a single shader. This is supported through the "attach" material script command. All the modules to be attached are listed on the same line as the attach command separated by white space.

Constructor & Destructor Documentation

◆ GLSLESProgramPipeline()

Ogre::GLSLESProgramPipeline::GLSLESProgramPipeline ( GLSLESProgram vertexProgram,
GLSLESProgram fragmentProgram 
)

Constructor should only be used by GLSLESProgramPipelineManager.

◆ ~GLSLESProgramPipeline()

virtual Ogre::GLSLESProgramPipeline::~GLSLESProgramPipeline ( )
virtual

Member Function Documentation

◆ updateUniforms()

virtual void Ogre::GLSLESProgramPipeline::updateUniforms ( GpuProgramParametersSharedPtr  params,
uint16  mask,
GpuProgramType  fromProgType 
)
virtual

Updates program pipeline object uniforms using data from GpuProgramParameters.

normally called by GLSLESGpuProgram::bindParameters() just before rendering occurs.

Implements Ogre::GLSLProgramCommon.

◆ activate()

void Ogre::GLSLESProgramPipeline::activate ( void  )
virtual

Makes a program pipeline object active by making sure it is linked and then putting it in use.

Implements Ogre::GLSLProgramCommon.

◆ bindFixedAttributes()

void Ogre::GLSLESProgramCommon::bindFixedAttributes ( GLuint  program)
inherited

◆ getVertexProgram()

GLSLESProgram* Ogre::GLSLESProgramCommon::getVertexProgram ( void  ) const
inlineinherited

◆ getFragmentProgram()

GLSLESProgram* Ogre::GLSLESProgramCommon::getFragmentProgram ( void  ) const
inlineinherited

◆ isUsingShader()

bool Ogre::GLSLESProgramCommon::isUsingShader ( GLSLShaderCommon shader) const
inlinevirtualinherited

query if the program is using the given shader

Implements Ogre::GLSLProgramCommon.

◆ extractLayoutQualifiers()

void Ogre::GLSLProgramCommon::extractLayoutQualifiers ( void  )
inherited

◆ setSkeletalAnimationIncluded()

void Ogre::GLSLProgramCommon::setSkeletalAnimationIncluded ( bool  included)
inlineinherited

Sets whether the linked program includes the required instructions to perform skeletal animation.

Remarks
If this is set to true, OGRE will not blend the geometry according to skeletal animation, it will expect the vertex program to do it.

◆ isSkeletalAnimationIncluded()

bool Ogre::GLSLProgramCommon::isSkeletalAnimationIncluded ( void  ) const
inlineinherited

Returns whether the linked program includes the required instructions to perform skeletal animation.

Remarks
If this returns true, OGRE will not blend the geometry according to skeletal animation, it will expect the vertex program to do it.

◆ getGLProgramHandle()

uint Ogre::GLSLProgramCommon::getGLProgramHandle ( void  ) const
inlineinherited

Get the GL Handle for the program object.

References OGRE_MAX_TEXTURE_COORD_SETS, and Ogre::VES_COUNT.

◆ updateUniformBlocks()

void Ogre::GLSLProgramCommon::updateUniformBlocks ( )
inherited

Updates program object uniform blocks using data from GpuProgramParameters.

Normally called by GLRenderSystem::bindParameters() just before rendering occurs.

◆ getFixedAttributeIndex()

static int32 Ogre::GLSLProgramCommon::getFixedAttributeIndex ( VertexElementSemantic  semantic,
uint  index 
)
staticinherited

Get the fixed attribute bindings normally used by GL for a semantic.

◆ useTightAttributeLayout()

static void Ogre::GLSLProgramCommon::useTightAttributeLayout ( )
staticinherited

use alternate vertex attribute layout using only 8 vertex attributes

For "Vivante GC1000" and "VideoCore IV" (notably in Raspberry Pi) on GLES2


The documentation for this class was generated from the following file: