GlClearColor: Difference between revisions
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(Created page with "'''_glClearColor:''' specify clear values for the color buffers {{PageSyntax}} :: SUB '''_glClearColor''' (BYVAL red AS SINGLE, BYVAL green AS SINGLE, BYVAL blue AS SINGLE, BYVAL alpha AS SINGLE) :: void '''_glClearColor'''(GLfloat {{Parameter|red}}, GLfloat {{Parameter|green}}, GLfloat {{Parameter|blue}}, GLfloat {{Parameter|alpha}}); ; red, green, blue, alpha : Specify the red, green, blue, and alpha values used when the color buffers are cleared. The initial valu...") |
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'''_glClearColor | {{DISPLAYTITLE:_glClearColor}} | ||
The '''_glClearColor''' statement specifies clear values for the color buffers. | |||
{{PageSyntax}} | {{PageSyntax}} | ||
: '''_glClearColor''' GLclampf {{Parameter|red}}, GLclampf {{Parameter|green}}, GLclampf {{Parameter|blue}}, GLclampf {{Parameter|alpha}} | |||
{{PageParameters}} | |||
* OpenGL is using its own set of variable types to describe its command parameters. | |||
* Use the following table to find the respective QB64 [[Variable Types]]. | |||
{{TextStart}} | |||
'''OpenGL''' | '''C/C++''' | '''QB64''' | |||
------------+------------------+---------------------- | |||
GLenum | unsigned int | [[_UNSIGNED]] [[LONG]] | |||
GLboolean | unsigned char | [[_UNSIGNED]] [[_BYTE]] | |||
GLbitfield | unsigned int | [[_UNSIGNED]] [[LONG]] | |||
GLbyte | signed char | [[_BYTE]] | |||
GLshort | short | [[INTEGER]] | |||
GLint | int | [[LONG]] | |||
GLsizei | int | [[LONG]] | |||
GLubyte | unsigned char | [[_UNSIGNED]] [[_BYTE]] | |||
GLushort | unsigned short | [[_UNSIGNED]] [[INTEGER]] | |||
GLuint | unsigned int | [[_UNSIGNED]] [[LONG]] | |||
GLfloat | float | [[SINGLE]] | |||
GLclampf | float | [[SINGLE]] | |||
GLdouble | double | [[DOUBLE]] | |||
GLclampd | double | [[DOUBLE]] | |||
GLvoid | void | no parameters used | |||
{{TextEnd}} | |||
{{PageDescription}} | {{PageDescription}} | ||
* OpenGL's documentation is available in several places, so we won't reproduce it here for another time. | |||
* The full description for this command can be found at [https://docs.microsoft.com/en-us/windows/win32/opengl/glclearcolor Microsoft Docs] and is also valid for QB64 usage. | |||
{{PageSeeAlso}} | {{PageSeeAlso}} | ||
* [[_GL|SUB _GL]] | |||
{{PageNavigation}} | |||
[[Category:Final]] | |||
Revision as of 10:12, 14 July 2022
The _glClearColor statement specifies clear values for the color buffers.
Syntax
- _glClearColor GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha
Parameters
- OpenGL is using its own set of variable types to describe its command parameters.
- Use the following table to find the respective QB64 Variable Types.
OpenGL | C/C++ | QB64 ------------+------------------+---------------------- GLenum | unsigned int | _UNSIGNED LONG GLboolean | unsigned char | _UNSIGNED _BYTE GLbitfield | unsigned int | _UNSIGNED LONG GLbyte | signed char | _BYTE GLshort | short | INTEGER GLint | int | LONG GLsizei | int | LONG GLubyte | unsigned char | _UNSIGNED _BYTE GLushort | unsigned short | _UNSIGNED INTEGER GLuint | unsigned int | _UNSIGNED LONG GLfloat | float | SINGLE GLclampf | float | SINGLE GLdouble | double | DOUBLE GLclampd | double | DOUBLE GLvoid | void | no parameters used |
Description
- OpenGL's documentation is available in several places, so we won't reproduce it here for another time.
- The full description for this command can be found at Microsoft Docs and is also valid for QB64 usage.
See also