OpenHarmony/third_party_mesa3d
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check mode for no change in _mesa_Read/DrawBuffer()

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This commit is contained in:
Brian Paul
2002-10-11 00:02:16 +00:00
parent 813c96f458
commit d54d4633fd
1 changed files with 7 additions and 2 deletions
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9
src/mesa/main/buffers.c
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@@ -1,4 +1,4 @@
/* $Id: buffers.c,v 1.38 2002/10/04 19:10:07 brianp Exp $ */
/* $Id: buffers.c,v 1.39 2002/10/11 00:02:16 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -144,10 +144,12 @@ _mesa_DrawBuffer( GLenum mode )
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex... */
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glDrawBuffer %s\n", _mesa_lookup_enum_by_nr(mode));
if (ctx->Color.DrawBuffer == mode)
return; /* no change */
/*
* Do error checking and compute the _DrawDestMask bitfield.
*/
@@ -262,6 +264,9 @@ _mesa_ReadBuffer( GLenum mode )
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glReadBuffer %s\n", _mesa_lookup_enum_by_nr(mode));
if (ctx->Pixel.ReadBuffer == mode)
return; /* no change */
switch (mode) {
case GL_AUX0:
case GL_AUX1: