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-rw-r--r--src/mesa/state_tracker/st_extensions.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index d5f58546613..e9ee65576d5 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -299,8 +299,12 @@ void st_init_extensions(struct st_context *st)
/* s3tc support */
if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
- PIPE_TEXTURE_2D,
- PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
+ PIPE_TEXTURE_2D,
+ PIPE_TEXTURE_USAGE_SAMPLER, 0) &&
+ (ctx->Mesa_DXTn ||
+ screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
+ PIPE_TEXTURE_2D,
+ PIPE_TEXTURE_USAGE_RENDER_TARGET, 0))) {
ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
ctx->Extensions.S3_s3tc = GL_TRUE;
}