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new Clear function mask

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This commit is contained in:
Brian Paul 2000-01-06 09:28:07 +00:00
parent 276988ec96
commit d3c145b98a
1 changed files with 18 additions and 5 deletions
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23
src/mesa/main/dd.h
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@ -1,4 +1,4 @@
/* $Id: dd.h,v 1.8 1999/12/10 19:09:22 brianp Exp $ */
/* $Id: dd.h,v 1.9 2000/01/06 09:28:07 brianp Exp $ */
/*
* Mesa 3-D graphics library
@ -118,6 +118,15 @@ struct gl_pipeline_stage;
/* Mask bits sent to the driver Clear() function */
#define DD_FRONT_LEFT_BIT FRONT_LEFT_BIT /* 1 */
#define DD_FRONT_RIGHT_BIT FRONT_RIGHT_BIT /* 2 */
#define DD_BACK_LEFT_BIT BACK_LEFT_BIT /* 4 */
#define DD_BACK_RIGHT_BIT BACK_RIGHT_BIT /* 8 */
#define DD_DEPTH_BIT GL_DEPTH_BUFFER_BIT /* 0x00000100 */
#define DD_STENCIL_BIT GL_STENCIL_BUFFER_BIT /* 0x00000400 */
#define DD_ACCUM_BIT GL_ACCUM_BUFFER_BIT /* 0x00000200 */
/*
@ -161,10 +170,14 @@ struct dd_function_table {
GLbitfield (*Clear)( GLcontext *ctx, GLbitfield mask, GLboolean all,
GLint x, GLint y, GLint width, GLint height );
/* Clear the color/depth/stencil/accum buffer(s).
* 'mask' indicates which buffers need to be cleared. Return a bitmask
* indicating which buffers weren't cleared by the driver function.
* If 'all' is true then the clear the whole buffer, else clear the
* region defined by (x,y,width,height).
* 'mask' is a bitmask of the DD_*_BIT values defined above that indicates
* which buffers need to be cleared. The driver should clear those
* buffers then return a new bitmask indicating which buffers should be
* cleared by software Mesa.
* If 'all' is true then the clear the whole buffer, else clear only the
* region defined by (x,y,width,height).
* This function must obey the glColorMask, glIndexMask and glStencilMask
* settings! Software Mesa can do masked clears if the device driver can't.
*/
void (*Index)( GLcontext *ctx, GLuint index );