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Always call Driver.SetReadBuffer() in copy pixels functions, just to be safe

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This commit is contained in:
Brian Paul 2000-10-31 23:11:06 +00:00
parent fda3b1a4b1
commit acdb6db846
1 changed files with 16 additions and 2 deletions
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18
src/mesa/swrast/s_copypix.c
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@ -1,4 +1,4 @@
/* $Id: s_copypix.c,v 1.1 2000/10/31 18:00:04 keithw Exp $ */
/* $Id: s_copypix.c,v 1.2 2000/10/31 23:11:06 brianp Exp $ */
/*
* Mesa 3-D graphics library
@ -329,7 +329,10 @@ copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
/* If read and draw buffer are different we must do buffer switching */
saveReadAlpha = ctx->ReadBuffer->Alpha;
changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer
|| ctx->DrawBuffer != ctx->ReadBuffer;
|| ctx->DrawBuffer != ctx->ReadBuffer;
(*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer );
if (overlapping) {
GLint ssy = sy;
@ -487,6 +490,10 @@ copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
}
}
/* Restore pixel source to be the draw buffer (for blending, etc) */
(*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
ctx->Color.DriverDrawBuffer );
if (overlapping)
FREE(tmpImage);
}
@ -534,6 +541,9 @@ static void copy_ci_pixels( GLcontext *ctx,
changeBuffer = ctx->Pixel.ReadBuffer != ctx->Color.DrawBuffer
|| ctx->DrawBuffer != ctx->ReadBuffer;
(*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer );
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLuint *) MALLOC(width * height * sizeof(GLuint));
@ -592,6 +602,10 @@ static void copy_ci_pixels( GLcontext *ctx,
}
}
/* Restore pixel source to be the draw buffer (for blending, etc) */
(*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
ctx->Color.DriverDrawBuffer );
if (overlapping)
FREE(tmpImage);
}