i915g: switch rendering to mipmapped textures to (x,y) offsets

Byte offsets simply don't work with tiled render targets when using
tiling bits. Luckily we can cox the hw into doing the right thing
with the DRAWING_RECT command by disabling the drawing rect offset
for the depth buffer.

Minor fixes by Jakob Bornecrantz.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Jakob Bornecrantz <wallbraker@gmail.com>
Signed-off-by: Jakob Bornecrantz <wallbraker@gmail.com>

1 files changed, 25 insertions, 9 deletions

diff --git a/src/gallium/drivers/i915/i915_state_emit.c b/src/gallium/drivers/i915/i915_state_emit.c
index 8d912cadc1..7c430dea8b 100644
--- a/src/gallium/drivers/i915/i915_state_emit.c
+++ b/src/gallium/drivers/i915/i915_state_emit.c
@@ -248,7 +248,7 @@ i915_emit_hardware_state(struct i915_context *i915 )
 
          OUT_RELOC(tex->buffer,
                    I915_USAGE_RENDER,
-                   cbuf_surface->offset);
+                   0);
       }
 
       /* What happens if no zbuf??
@@ -405,18 +405,34 @@ i915_emit_hardware_state(struct i915_context *i915 )
 #if 01
    /* drawing surface size */
    /* 6 dwords, 0 relocs */
+   if (i915->hardware_dirty & I915_HW_STATIC)
    {
       uint w, h;
-      boolean k = framebuffer_size(&i915->framebuffer, &w, &h);
-      (void)k;
-      assert(k);
+      struct pipe_surface *cbuf_surface = i915->framebuffer.cbufs[0];
+      struct i915_texture *tex = i915_texture(cbuf_surface->texture);
+      unsigned x, y;
+      int face;
+      uint32_t draw_offset;
+      boolean ret;
+
+      ret = framebuffer_size(&i915->framebuffer, &w, &h);
+      assert(ret);
+
+      face = tex->b.b.target == PIPE_TEXTURE_CUBE ?
+               cbuf_surface->face : cbuf_surface->zslice;
+
+      x = tex->image_offset[cbuf_surface->level][face].nblocksx;
+      y = tex->image_offset[cbuf_surface->level][face].nblocksy;
 
+      draw_offset = x | (y << 16);
+
+      /* XXX flush only required when the draw_offset changes! */
+      OUT_BATCH(MI_FLUSH | INHIBIT_FLUSH_RENDER_CACHE);
       OUT_BATCH(_3DSTATE_DRAW_RECT_CMD);
-      OUT_BATCH(0);
-      OUT_BATCH(0);
-      OUT_BATCH(((w - 1) & 0xffff) | ((h - 1) << 16));
-      OUT_BATCH(0);
-      OUT_BATCH(0);
+      OUT_BATCH(DRAW_RECT_DIS_DEPTH_OFS);
+      OUT_BATCH(draw_offset);
+      OUT_BATCH((w - 1 + x) | ((h - 1 + y) << 16));
+      OUT_BATCH(draw_offset);
    }
 #endif