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authorXiang, Haihao <haihao.xiang@intel.com>2008-12-11 14:03:00 +0800
committerXiang, Haihao <haihao.xiang@intel.com>2008-12-11 14:03:00 +0800
commitc8b505d8260cccf289c947c629471df8f5c81c0d (patch)
tree54554a2f1f5a4b88e5a228d6dbcbd429f068b709
parent3b9bc821e1dfe39905585746166183264c335416 (diff)
i915: fallback for cube map texture.
The i915 (and related graphics cores) only support TEXCOORDMODE_CLAMP and TEXCOORDMODE_CUBE when using cube map texture coordinates, so fall back to software rendering for other modes to avoid potential gpu hang issue. This fixes scorched3d issue on 945GM(see bug 14539).
-rw-r--r--src/mesa/drivers/dri/i915/i915_texstate.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915/i915_texstate.c b/src/mesa/drivers/dri/i915/i915_texstate.c
index d1b0dcdf31..d53e2cbd5a 100644
--- a/src/mesa/drivers/dri/i915/i915_texstate.c
+++ b/src/mesa/drivers/dri/i915/i915_texstate.c
@@ -295,6 +295,13 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
return GL_FALSE;
+ /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
+ * used) when using cube map texture coordinates
+ */
+ if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
+ (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
+ ((wr != GL_CLAMP) && (wr != GL_CLAMP_TO_EDGE))))
+ return GL_FALSE;
state[I915_TEXREG_SS3] = ss3; /* SS3_NORMALIZED_COORDS */