i915: Fork the shared code from i965.

Of this 15000 lines of code in intel/, we've identified 4000 lines that
are trivially unnecessary for i915, and another 1000 that are pointless for
i965, and expect to find more as time goes on.  Split the i915 driver off,
so that we can continue active development on i965 without worrying about
breaking i915.

Acked-by: Kenneth Graunke <[email protected]>
Acked-by: Chad Versace <[email protected]>
Acked-by: Adam Jackson <[email protected]>
(and I hear second hand that idr is OK with it, too)

1 files changed, 212 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i915/intel_fbo.h b/src/mesa/drivers/dri/i915/intel_fbo.h
new file mode 100644
index 00000000000..e1b4df567db
--- /dev/null
+++ b/src/mesa/drivers/dri/i915/intel_fbo.h
@@ -0,0 +1,212 @@
+/**************************************************************************
+ * 
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+#ifndef INTEL_FBO_H
+#define INTEL_FBO_H
+
+#include <stdbool.h>
+#include <assert.h>
+#include "main/formats.h"
+#include "main/macros.h"
+#include "intel_context.h"
+#include "intel_mipmap_tree.h"
+#include "intel_screen.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct intel_context;
+struct intel_mipmap_tree;
+struct intel_texture_image;
+
+/**
+ * Intel renderbuffer, derived from gl_renderbuffer.
+ */
+struct intel_renderbuffer
+{
+   struct swrast_renderbuffer Base;
+   struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
+   drm_intel_bo *map_bo;
+
+   /**
+    * \name Miptree view
+    * \{
+    *
+    * Multiple renderbuffers may simultaneously wrap a single texture and each
+    * provide a different view into that texture. The fields below indicate
+    * which miptree slice is wrapped by this renderbuffer.  The fields' values
+    * are consistent with the 'level' and 'layer' parameters of
+    * glFramebufferTextureLayer().
+    *
+    * For renderbuffers not created with glFramebufferTexture*(), mt_level and
+    * mt_layer are 0.
+    */
+   unsigned int mt_level;
+   unsigned int mt_layer;
+   /** \} */
+
+   GLuint draw_x, draw_y; /**< Offset of drawing within the region */
+};
+
+
+/**
+ * gl_renderbuffer is a base class which we subclass.  The Class field
+ * is used for simple run-time type checking.
+ */
+#define INTEL_RB_CLASS 0x12345678
+
+
+/**
+ * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
+ * NULL will be returned if the rb isn't really an intel_renderbuffer.
+ * This is determined by checking the ClassID.
+ */
+static INLINE struct intel_renderbuffer *
+intel_renderbuffer(struct gl_renderbuffer *rb)
+{
+   struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
+   if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS) {
+      /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
+      return irb;
+   }
+   else
+      return NULL;
+}
+
+
+/**
+ * \brief Return the framebuffer attachment specified by attIndex.
+ *
+ * If the framebuffer lacks the specified attachment, then return null.
+ *
+ * If the attached renderbuffer is a wrapper, then return wrapped
+ * renderbuffer.
+ */
+static INLINE struct intel_renderbuffer *
+intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
+{
+   struct gl_renderbuffer *rb;
+
+   assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
+
+   rb = fb->Attachment[attIndex].Renderbuffer;
+   if (!rb)
+      return NULL;
+
+   return intel_renderbuffer(rb);
+}
+
+
+static INLINE gl_format
+intel_rb_format(const struct intel_renderbuffer *rb)
+{
+   return rb->Base.Base.Format;
+}
+
+extern struct intel_renderbuffer *
+intel_create_renderbuffer(gl_format format, unsigned num_samples);
+
+struct intel_renderbuffer *
+intel_create_private_renderbuffer(gl_format format, unsigned num_samples);
+
+struct gl_renderbuffer*
+intel_create_wrapped_renderbuffer(struct gl_context * ctx,
+				  int width, int height,
+				  gl_format format);
+
+extern void
+intel_fbo_init(struct intel_context *intel);
+
+
+extern void
+intel_flip_renderbuffers(struct gl_framebuffer *fb);
+
+void
+intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
+
+static inline uint32_t
+intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb,
+                                    uint32_t *tile_x,
+                                    uint32_t *tile_y)
+{
+   return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer,
+                                         tile_x, tile_y);
+}
+
+struct intel_region*
+intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);
+
+void
+intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer *irb);
+
+bool
+intel_renderbuffer_has_hiz(struct intel_renderbuffer *irb);
+
+void
+intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer *irb);
+
+void
+intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer *irb);
+
+
+/**
+ * \brief Perform a HiZ resolve on the renderbuffer.
+ *
+ * It is safe to call this function on a renderbuffer without HiZ. In that
+ * case, the function is a no-op.
+ *
+ * \return false if no resolve was needed
+ */
+bool
+intel_renderbuffer_resolve_hiz(struct intel_context *intel,
+			       struct intel_renderbuffer *irb);
+
+/**
+ * \brief Perform a depth resolve on the renderbuffer.
+ *
+ * It is safe to call this function on a renderbuffer without HiZ. In that
+ * case, the function is a no-op.
+ *
+ * \return false if no resolve was needed
+ */
+bool
+intel_renderbuffer_resolve_depth(struct intel_context *intel,
+				 struct intel_renderbuffer *irb);
+
+void intel_renderbuffer_move_to_temp(struct intel_context *intel,
+                                     struct intel_renderbuffer *irb,
+                                     bool invalidate);
+
+unsigned
+intel_quantize_num_samples(struct intel_screen *intel, unsigned num_samples);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* INTEL_FBO_H */