st/mesa: try PIPE_BIND_RENDER_TARGET when choosing float texture formats

For 8-bit RGB(A) texture formats we set the PIPE_BIND_RENDER_TARGET flag
to try to get a hardware format which also supports rendering (for FBO
textures).  Do the same thing for floating point formats.

This allows the Redway3D Flat demo to run.

Cc: 10.6 11.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>

diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c
index 0c9442862d47b7691552a1f6a2dbef34a89198f9..144b7d6f659f041fbe94d31b05baf5c37c987686 100644 (file)
--- a/src/mesa/state_tracker/st_format.c
+++ b/src/mesa/state_tracker/st_format.c
@@ -1963,7 +1963,11 @@ st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
    else if (internalFormat == 3 || internalFormat == 4 ||
             internalFormat == GL_RGB || internalFormat == GL_RGBA ||
             internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
-            internalFormat == GL_BGRA)
+            internalFormat == GL_BGRA ||
+            internalFormat == GL_RGB16F ||
+            internalFormat == GL_RGBA16F ||
+            internalFormat == GL_RGB32F ||
+            internalFormat == GL_RGBA32F)
         bindings |= PIPE_BIND_RENDER_TARGET;
 
    /* GLES allows the driver to choose any format which matches