| Name |
| |
| CHROMIUM_subscribe_uniform |
| |
| Name Strings |
| |
| CHROMIUM_subscribe_uniform |
| |
| Version |
| |
| Last Modifed Date: October 30, 2014 |
| |
| Dependencies |
| |
| OpenGL ES 2.0 is required. |
| |
| Overview |
| |
| Allows clients to subscribe to a set of input uniforms which can |
| be populated within buffers and used to modify uniform variables within |
| their programs. |
| |
| Decreases percieved latency for operations performed against these |
| uniforms. |
| |
| New Tokens |
| |
| Accepted by the <target> parameter of glBindValueBufferCHROMIUM, |
| glSubscribeValueCHROMIUM, glPopulateSubscribedValuesCHROMIUM and |
| glUniformValueBufferCHROMIUM |
| |
| GL_SUBSCRIBED_VALUES_BUFFER_CHROMIUM 0x924B |
| |
| Accepted by the <subscription> parameter of glSubscribeValueCHROMIUM and |
| glUniformValueBufferCHROMIUM: |
| |
| GL_MOUSE_POSITION_CHROMIUM 0x924C |
| |
| New Procedures and Functions |
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| The command |
| |
| void glGenValuebuffersCHROMIUM(GLsizei n, GLuint* buffers) |
| |
| Generates value buffer object names. |
| <n> Specifies the number of value buffer object names to be generated. |
| <buffers> Specifies an array in which the generated value buffer object |
| names are stored. |
| |
| The command |
| |
| void glDeleteValuebuffersCHROMIUM(GLsizei n, const GLuint* valuebuffers) |
| |
| Deletes named value buffer objects. |
| <n> Specifies the number of value buffer objects to be deleted. |
| <buffers> Specifies an array of value buffer objects to be deleted. |
| |
| The command |
| |
| boolean glIsValuebufferCHROMIUM(GLuint buffer); |
| |
| Returns whether an object is a value buffer object. |
| <buffer> Specifies the name of a buffer object. |
| |
| The command |
| |
| void glBindValuebufferCHROMIUM(GLenum target, GLuint buffer); |
| |
| Lets you use a named value buffer object. |
| <target> Specifies the target to which the buffer object is bound. |
| <buffer> Specifies the name of a buffer object. |
| |
| The command |
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| void glSubscribeValueCHROMIUM(GLenum target, GLenum subscription) |
| |
| Subscribes the currently bound buffer object to a subscription target. |
| <target> Specifies the target to which the buffer object is bound. |
| <subscription> Specifies the subscription to which the currently bound |
| buffer object should be subscribed. |
| |
| The command |
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| void glPopulateSubscribedValuesCHROMIUM(GLenum target) |
| |
| Populates the currently bound buffer object with all subscription states |
| to which it is subscribed. |
| <target> Specifies the target to which the buffer object is bound. |
| |
| The command |
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| void glUniformValueBufferCHROMIUM(GLint location, GLenum target, |
| GLenum subscription) |
| |
| Populates the uniform specified by location within the currently bound |
| program with the value in the currently bound buffer for the subscription |
| target. |
| <location> Specifies the location of the uniform variable to by modified. |
| <target> Specifies the target to which the buffer object is bound. |
| <subscription> Specifies the subscription in the currently bound buffer |
| whose value should be used to populate the uniform. |
| |
| Errors |
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| None. |
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| New State |
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| None. |
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| Revision History |
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| 10/30/2014 Documented the extension |