From cfa1a0a609daefffc6f8c4087ed0bc34c2665ef4 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 16 Sep 2009 12:57:26 -0600 Subject: st/mesa: fix texture memory allocation bug The following example caused an incorrect GL_OUT_OF_MEMORY error to be raised in glTexSubImage2D: glTexImage2D(level=0, width=32, height=32, pixels=NULL); glTexImage2D(level=0, width=64, height=64, pixels=NULL); glTexSubImage2D(level=0, pixels!=NULL); The second glTexImage2D() call needs to cause the first image to be deallocated then reallocated at the new size. This was not happening because we were testing for pixels==NULL too early. --- src/mesa/state_tracker/st_cb_texture.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'src') diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c index 2db28ef0a4..31196fe776 100644 --- a/src/mesa/state_tracker/st_cb_texture.c +++ b/src/mesa/state_tracker/st_cb_texture.c @@ -661,8 +661,10 @@ st_TexImage(GLcontext * ctx, format, type, pixels, unpack, "glTexImage"); } - if (!pixels) - return; + + /* Note: we can't check for pixels==NULL until after we've allocated + * memory for the texture. + */ /* See if we can do texture compression with a blit/render. */ @@ -673,6 +675,9 @@ st_TexImage(GLcontext * ctx, stImage->pt->format, stImage->pt->target, PIPE_TEXTURE_USAGE_RENDER_TARGET, 0)) { + if (!pixels) + goto done; + if (compress_with_blit(ctx, target, level, 0, 0, 0, width, height, depth, format, type, pixels, unpack, texImage)) { goto done; @@ -714,6 +719,9 @@ st_TexImage(GLcontext * ctx, return; } + if (!pixels) + goto done; + DBG("Upload image %dx%dx%d row_len %x pitch %x\n", width, height, depth, width * texelBytes, dstRowStride); -- cgit v1.2.3