diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2003-05-02 15:05:02 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2003-05-02 15:05:02 +0000 |
| commit | 7357f20b1ee3ab0c58c7a20f44bf83fdfe0e256e (patch) | |
| tree | 514cb30570ebf23bae7ce298b504d1f22382cf97 /docs/MESA_ycbcr_texture.spec | |
| parent | c784d87b0f07590a2bb87307ca6a264b2ec99b31 (diff) | |
minor updates
Diffstat (limited to 'docs/MESA_ycbcr_texture.spec')
| -rw-r--r-- | docs/MESA_ycbcr_texture.spec | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/docs/MESA_ycbcr_texture.spec b/docs/MESA_ycbcr_texture.spec index a0ef310dc6..1fbb1e135c 100644 --- a/docs/MESA_ycbcr_texture.spec +++ b/docs/MESA_ycbcr_texture.spec @@ -33,9 +33,9 @@ Overview This extension supports texture images in the YCbCr format. There is no support for converting YCbCr images to RGB or vice versa. The - intention is for YCbCr image data to be directly sent to the renderer - without any pixel transfer operations. Only 2D texture images are - supported (not glDrawPixels, glReadPixels, etc). + texture's YCbCr colors are converted to RGB during texture sampling. + Only 2D texture images are supported (not glDrawPixels, glReadPixels, + etc). A YCbCr pixel (texel) is a 16-bit unsigned short with two components. The first component is luminance (Y). For pixels in even-numbered @@ -61,12 +61,12 @@ New Tokens Accepted by the <internalFormat> and <format> parameters of TexImage2D and TexSubImage2D: - GL_YCBCR_MESA 0x8757 + YCBCR_MESA 0x8757 Accepted by the <type> parameter of TexImage2D and TexSubImage2D: - GL_UNSIGNED_SHORT_8_8_MESA 0x85BA /* same as Apple's */ - GL_UNSIGNED_SHORT_8_8_REV_MESA 0x85BB /* same as Apple's */ + UNSIGNED_SHORT_8_8_MESA 0x85BA /* same as Apple's */ + UNSIGNED_SHORT_8_8_REV_MESA 0x85BB /* same as Apple's */ Additions to Chapter 2 of the OpenGL 1.4 Specification (OpenGL Operation) @@ -181,7 +181,7 @@ Errors <internalFormat> is MESA_YCBCR and <border> is not zero. INVALID_OPERATION is generated by TexSubImage2D if the internal image - format is YCBCR_MESA and format is not YCBCR_MESA. + format is YCBCR_MESA and <format> is not YCBCR_MESA. INVALID_OPERATION is generated by CopyTexSubImage2D if the internal image is YCBCR_MESA. @@ -195,3 +195,4 @@ New State Revision History 20 September 2002 - Initial draft + 29 April 2003 - minor updates |