diff --git a/src/r600_exa.c b/src/r600_exa.c
index 18831f7..988ec7e 100644
--- a/src/r600_exa.c
+++ b/src/r600_exa.c
@@ -1279,18 +1279,53 @@ static Bool R600TextureSetup(PicturePtr pPict, PixmapPtr pPix,
     set_tex_sampler             (pScrn, accel_state->ib, &tex_samp);
 
     if (pPict->transform != 0) {
+	int tw = w;
+	int th = h;
 	accel_state->is_transform[unit] = TRUE;
 	accel_state->transform[unit] = pPict->transform;
 
 	vs_alu_consts[0] = xFixedToFloat(pPict->transform->matrix[0][0]);
 	vs_alu_consts[1] = xFixedToFloat(pPict->transform->matrix[0][1]);
 	vs_alu_consts[2] = xFixedToFloat(pPict->transform->matrix[0][2]);
-	vs_alu_consts[3] = 1.0 / w;
+	//vs_alu_consts[3] = 1.0 / w;
 
 	vs_alu_consts[4] = xFixedToFloat(pPict->transform->matrix[1][0]);
 	vs_alu_consts[5] = xFixedToFloat(pPict->transform->matrix[1][1]);
 	vs_alu_consts[6] = xFixedToFloat(pPict->transform->matrix[1][2]);
-	vs_alu_consts[7] = 1.0 / h;
+	//vs_alu_consts[7] = 1.0 / h;
+
+	/* right */
+	if ((vs_alu_consts[0] == 0) &&
+	    (vs_alu_consts[1] == 1) &&
+	    (vs_alu_consts[2] == 0) &&
+	    (vs_alu_consts[4] == -1) &&
+	    (vs_alu_consts[5] == 0) &&
+	    (vs_alu_consts[6] != 0))
+	    th++;
+
+	/* left */
+	if ((vs_alu_consts[0] == 0) &&
+	    (vs_alu_consts[1] == -1) &&
+	    (vs_alu_consts[2] != 0) &&
+	    (vs_alu_consts[4] == 1) &&
+	    (vs_alu_consts[5] == 0) &&
+	    (vs_alu_consts[6] == 0))
+	    tw++;
+
+	/* inverted */
+	if ((vs_alu_consts[0] == -1) &&
+	    (vs_alu_consts[1] == 0) &&
+	    (vs_alu_consts[2] != 0) &&
+	    (vs_alu_consts[4] == 0) &&
+	    (vs_alu_consts[5] == -1) &&
+	    (vs_alu_consts[6] != 0)) {
+	    th++;
+	    tw++;
+	}
+
+	vs_alu_consts[3] = 1.0 / tw;
+	vs_alu_consts[7] = 1.0 / th;
+
     } else {
 	accel_state->is_transform[unit] = FALSE;