i965/urb: fixes division by zero

[mesa.git] / src / mesa / drivers / dri / i965 / gen6_viewport_state.c

diff --git a/src/mesa/drivers/dri/i965/gen6_viewport_state.c b/src/mesa/drivers/dri/i965/gen6_viewport_state.c
index 2fb0182c56e89704a34075df72a15cca300670c6..eacffb9ba0f459e20712355372210b9e948d291b 100644 (file)
--- a/src/mesa/drivers/dri/i965/gen6_viewport_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_viewport_state.c
@@ -30,6 +30,7 @@
 #include "brw_defines.h"
 #include "intel_batchbuffer.h"
 #include "main/fbobject.h"
+#include "main/framebuffer.h"
 #include "main/viewport.h"
 
 /* The clip VP defines the guardband region where expensive clipping is skipped
@@ -72,7 +73,8 @@ gen6_upload_clip_vp(struct brw_context *brw)
 const struct brw_tracked_state gen6_clip_vp = {
    .dirty = {
       .mesa = _NEW_VIEWPORT,
-      .brw = BRW_NEW_BATCH,
+      .brw = BRW_NEW_BATCH |
+             BRW_NEW_BLORP,
    },
    .emit = gen6_upload_clip_vp,
 };
@@ -93,14 +95,14 @@ gen6_upload_sf_vp(struct brw_context *brw)
    /* _NEW_BUFFERS */
    if (render_to_fbo) {
       y_scale = 1.0;
-      y_bias = 0;
+      y_bias = 0.0;
    } else {
       y_scale = -1.0;
-      y_bias = ctx->DrawBuffer->Height;
+      y_bias = (float)_mesa_geometric_height(ctx->DrawBuffer);
    }
 
    for (unsigned i = 0; i < ctx->Const.MaxViewports; i++) {
-      double scale[3], translate[3];
+      float scale[3], translate[3];
 
       /* _NEW_VIEWPORT */
       _mesa_get_viewport_xform(ctx, i, scale, translate);
@@ -120,7 +122,8 @@ const struct brw_tracked_state gen6_sf_vp = {
    .dirty = {
       .mesa = _NEW_BUFFERS |
               _NEW_VIEWPORT,
-      .brw = BRW_NEW_BATCH,
+      .brw = BRW_NEW_BATCH |
+             BRW_NEW_BLORP,
    },
    .emit = gen6_upload_sf_vp,
 };
@@ -142,6 +145,7 @@ const struct brw_tracked_state gen6_viewport_state = {
    .dirty = {
       .mesa = 0,
       .brw = BRW_NEW_BATCH |
+             BRW_NEW_BLORP |
              BRW_NEW_CC_VP |
              BRW_NEW_CLIP_VP |
              BRW_NEW_SF_VP |