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Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_fallback.c')
-rw-r--r--src/mesa/drivers/dri/i965/brw_fallback.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fallback.c b/src/mesa/drivers/dri/i965/brw_fallback.c
index 299357409c..d27c6c24ca 100644
--- a/src/mesa/drivers/dri/i965/brw_fallback.c
+++ b/src/mesa/drivers/dri/i965/brw_fallback.c
@@ -37,6 +37,9 @@
#include "tnl/tnl.h"
#include "brw_context.h"
#include "brw_fallback.h"
+#include "intel_chipset.h"
+#include "intel_fbo.h"
+#include "intel_regions.h"
#include "glapi/glapi.h"
@@ -44,6 +47,7 @@
static GLboolean do_check_fallback(struct brw_context *brw)
{
+ struct intel_context *intel = &brw->intel;
GLcontext *ctx = &brw->intel.ctx;
GLuint i;
@@ -81,6 +85,33 @@ static GLboolean do_check_fallback(struct brw_context *brw)
return GL_TRUE;
}
+ /* _NEW_BUFFERS */
+ if (IS_965(intel->intelScreen->deviceID) &&
+ !IS_G4X(intel->intelScreen->deviceID)) {
+ for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
+ struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[i];
+ struct intel_renderbuffer *irb = intel_renderbuffer(rb);
+
+ /* The original gen4 hardware couldn't set up WM surfaces pointing
+ * at an offset within a tile, which can happen when rendering to
+ * anything but the base level of a texture or the +X face/0 depth.
+ * This was fixed with the 4 Series hardware.
+ *
+ * For these original chips, you would have to make the depth and
+ * color destination surfaces include information on the texture
+ * type, LOD, face, and various limits to use them as a destination.
+ * I would have done this, but there's also a nasty requirement that
+ * the depth and the color surfaces all be of the same LOD, which
+ * may be a worse requirement than this alignment. (Also, we may
+ * want to just demote the texture to untiled, instead).
+ */
+ if (irb->region && irb->region->tiling != I915_TILING_NONE &&
+ (irb->region->draw_offset & 4095)) {
+ DBG("FALLBACK: non-tile-aligned destination for tiled FBO\n");
+ return GL_TRUE;
+ }
+ }
+ }
return GL_FALSE;
}