OpenHarmony/third_party_mesa3d
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check for special cases of value = 0 or 1 in glAccum

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Brian Paul
2000-06-19 00:42:24 +00:00
parent b92471b74c
commit e4b65b6e59
1 changed files with 6 additions and 3 deletions
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9
src/mesa/main/accum.c
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@@ -1,4 +1,4 @@
/* $Id: accum.c,v 1.20 2000/04/05 14:40:04 brianp Exp $ */ /* $Id: accum.c,v 1.21 2000/06/19 00:42:24 brianp Exp $ */
/* /*
* Mesa 3-D graphics library * Mesa 3-D graphics library
@@ -188,7 +188,7 @@ _mesa_Accum( GLenum op, GLfloat value )
switch (op) { switch (op) {
case GL_ADD: case GL_ADD:
{ if (value != 0.0F) {
const GLaccum intVal = (GLaccum) (value * acc_scale); const GLaccum intVal = (GLaccum) (value * acc_scale);
GLuint j; GLuint j;
/* Leave optimized accum buffer mode */ /* Leave optimized accum buffer mode */
@@ -206,7 +206,7 @@ _mesa_Accum( GLenum op, GLfloat value )
break; break;
case GL_MULT: case GL_MULT:
{ if (value != 1.0F) {
GLuint j; GLuint j;
/* Leave optimized accum buffer mode */ /* Leave optimized accum buffer mode */
if (ctx->IntegerAccumMode) if (ctx->IntegerAccumMode)
@@ -223,6 +223,9 @@ _mesa_Accum( GLenum op, GLfloat value )
break; break;
case GL_ACCUM: case GL_ACCUM:
if (value == 0.0F)
return;
(*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer, (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer ); ctx->Pixel.DriverReadBuffer );