glgetmultisamplefv(3g) [centos man page]
GLGETMULTISAMPLEFV(3G) OpenGL Manual GLGETMULTISAMPLEFV(3G) NAME
glGetMultisamplefv - retrieve the location of a sample C SPECIFICATION
void glGetMultisamplefv(GLenum pname, GLuint index, GLfloat *val); PARAMETERS
pname Specifies the sample parameter name. pname must be GL_SAMPLE_POSITION. index Specifies the index of the sample whose position to query. val Specifies the address of an array to receive the position of the sample. DESCRIPTION
glGetMultisamplefv queries the location of a given sample. pname specifies the sample parameter to retrieve and must be GL_SAMPLE_POSITION. index corresponds to the sample for which the location should be returned. The sample location is returned as two floating-point values in val[0] and val[1], each between 0 and 1, corresponding to the x and y locations respectively in the GL pixel space of that sample. (0.5, 0.5) this corresponds to the pixel center. index must be between zero and the value of GL_SAMPLES - 1. If the multisample mode does not have fixed sample locations, the returned values may only reflect the locations of samples within some pixels. ERRORS
GL_INVALID_ENUM is generated if pname is not one GL_SAMPLE_POSITION. GL_INVALID_VALUE is generated if index is greater than or equal to the value of GL_SAMPLES. SEE ALSO
glGenFramebuffers(), glBindFramebuffer() COPYRIGHT
Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/. AUTHORS
opengl.org opengl.org 06/10/2014 GLGETMULTISAMPLEFV(3G)
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GLFRAMEBUFFERPARAMET(3G) OpenGL Manual GLFRAMEBUFFERPARAMET(3G) NAME
glFramebufferParameteri - set a named parameter of a framebuffer C SPECIFICATION
void glFramebufferParameteri(GLenum target, GLenum pname, GLint param); PARAMETERS
target The target of the operation, which must be GL_READ_FRAMEBUFFER, GL_DRAW_FRAMEBUFFER or GL_FRAMEBUFFER. pname A token indicating the parameter to be modified. param The new value for the parameter named pname. DESCRIPTION
glFramebufferParameteri modifies the current value of the parameter named pname in the framebuffer bound to target. target must be GL_READ_FRAMEBFUFFER, GL_DRAW_FRAMEBUFFER or GL_FRAMEBUFFER. The token GL_FRAMEBUFFER is treated as GL_DRAW_FRAMEBUFFER. A non-default framebuffer must be bound to target. pname specifies the parameter to be modified. The following symbols are accepted in pname: GL_FRAMEBUFFER_DEFAULT_WIDTH param specifies the assumed with for a framebuffer object with no attachments. If a framebuffer has attachments then the width of those attachments is used, otherwise the value of GL_FRAMEBUFFER_DEFAULT_WIDTH is used for the framebuffer. param must be greater than or equal to zero and less than or equal to the value of GL_MAX_FRAMEBUFFER_WIDTH. GL_FRAMEBUFFER_DEFAULT_HEIGHT param specifies the assumed height for a framebuffer object with no attachments. If a framebuffer has attachments then the height of those attachments is used, otherwise the value of GL_FRAMEBUFFER_DEFAULT_HEIGHT is used for the framebuffer. param must be greater than or equal to zero and less than or equal to the value of GL_MAX_FRAMEBUFFER_HEIGHT. GL_FRAMEBUFFER_DEFAULT_LAYERS param specifies the assumed number of layers for a framebuffer object with no attachments. If a framebuffer has attachments then the layer count of those attachments is used, otherwise the value of GL_FRAMEBUFFER_DEFAULT_LAYERS is used for the framebuffer. param must be greater than or equal to zero and less than or equal to the value of GL_MAX_FRAMEBUFFER_LAYERS. GL_FRAMEBUFFER_DEFAULT_SAMPLES param specifies the assumed number of samples in a framebuffer object with no attachments. If a framebuffer has attachments then the sample count of those attachments is used, otherwise the value of GL_FRAMEBUFFER_DEFAULT_SAMPLES is used for the framebuffer. param must be greater than or equal to zero and less than or equal to the value of GL_MAX_FRAMEBUFFER_SAMPLE. GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS param specifies whether the framebuffer should assume identical sample locations and the same number of samples for all texels in the virtual image. If param is zero, then the implementation may vary the position or the count of samples within the virtual image from pixel to pixel, otherwise it will use the same sample position and count for all pixels in the virtual image. ERRORS
GL_INVALID_ENUM is generated if target is not one of the accepted framebuffer targets. GL_INVAILD_VALUE is generated if pname is GL_FRAMEBUFFER_DEFAULT_WIDTH and param is less than zero or greater than the value of GL_MAX_FRAMEBUFFER_WIDTH. GL_INVAILD_VALUE is generated if pname is GL_FRAMEBUFFER_DEFAULT_HEIGHT and param is less than zero or greater than the value of GL_MAX_FRAMEBUFFER_HEIGHT. GL_INVAILD_VALUE is generated if pname is GL_FRAMEBUFFER_DEFAULT_LAYERS and param is less than zero or greater than the value of GL_MAX_FRAMEBUFFER_LAYERS. GL_INVAILD_VALUE is generated if pname is GL_FRAMEBUFFER_DEFAULT_SAMPLES and param is less than zero or greater than the value of GL_MAX_FRAMEBUFFER_SAMPLES. GL_INVALID_OPERATION is generated if the default framebuffer is bound to target. ASSOCIATED GETS
glGetFramebufferParameteriv(). SEE ALSO
glVertexAttribBinding(), glVertexAttribFormat(), glVertexAttribPointer(), glVertexBindingDivisor(). COPYRIGHT
Copyright (C) 2012 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/. AUTHORS
opengl.org opengl.org 06/10/2014 GLFRAMEBUFFERPARAMET(3G)