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mask color indexes against palette size, per the spec

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This commit is contained in:
Brian Paul 2004-12-03 18:12:08 +00:00
parent 0fdb7ef877
commit cbc527cd17
1 changed files with 5 additions and 2 deletions
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7
src/mesa/main/texformat_tmp.h
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@ -1,6 +1,6 @@
/*
* Mesa 3-D graphics library
* Version: 6.1
* Version: 6.3
*
* Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
*
@ -1023,9 +1023,9 @@ static void FETCH(ci8)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLchan *texel )
{
const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 );
const GLuint index = *src;
const struct gl_color_table *palette;
const GLchan *table;
GLuint index;
GET_CURRENT_CONTEXT(ctx);
if (ctx->Texture.SharedPalette) {
@ -1039,6 +1039,9 @@ static void FETCH(ci8)( const struct gl_texture_image *texImage,
ASSERT(palette->Type != GL_FLOAT);
table = (const GLchan *) palette->Table;
/* Mask the index against size of palette to avoid going out of bounds */
index = (*src) & (palette->Size - 1);
switch (palette->Format) {
case GL_ALPHA:
texel[RCOMP] =