nvfx: rewrite draw code and buffer code

This is a full rewrite of the drawing and buffer management logic.

It offers a lot of improvements:
1. A copy of buffers is now always kept in system memory. This is
   necessary to allow software processing of them, which is necessary
   or improves performance in many cases.
2. Support for pushing vertices on the FIFO, with index lookup if necessary.
3. "Smart" draw code that tries to intelligently choose the cheapest
  way to draw something: whether to use inline vertices or hardware
  vertex buffer, and whether to use hardware index buffers
4. Support for all vertex formats supported by the hardware
5. Usage of translate to push vertices, supporting all formats that are
   sensible to use as vertex formats
6. Support for base vertex
7. Usage of Ben Skeggs' primitive splitter originally for nv50, allowing
   correct splitting of line loops, triangle fans, etc.
8. Support for instancing
9. Precomputation using the vertex elements CSO

Thanks to Ben Skeggs for his primitive splitter originally for nv50.

Thanks to Christoph Bumiller for his nv50 push code, that was the basis
of this work, even though I changed his code dramatically, in particular
to replace his ad-hoc vertex data emitter with translate.

The changes could also go into nv50 too, but there are substantial
differences due to the additional nv50 hardware features.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/gallium/drivers/nvfx/nvfx_screen.h b/src/gallium/drivers/nvfx/nvfx_screen.h
index 4dedbe9cb40..473a1127752 100644
--- a/src/gallium/drivers/nvfx/nvfx_screen.h
+++ b/src/gallium/drivers/nvfx/nvfx_screen.h
@@ -16,6 +16,7 @@ struct nvfx_screen {
 
 	unsigned is_nv4x; /* either 0 or ~0 */
 	boolean force_swtnl;
+	boolean trace_draw;
 	unsigned vertex_buffer_reloc_flags;
 	unsigned index_buffer_reloc_flags;
 
@@ -33,6 +34,18 @@ struct nvfx_screen {
 	struct nouveau_resource *vp_data_heap;
 
 	struct nv04_2d_context* eng2d;
+
+	/* Once the amount of bytes drawn from the buffer reaches the updated size times this value,
+	 * we will assume that the buffer will be drawn an huge number of times before the
+	 * next modification
+	 */
+	float static_reuse_threshold;
+
+	/* Cost of allocating a buffer in terms of the cost of copying a byte to an hardware buffer */
+	unsigned buffer_allocation_cost;
+
+	/* inline_cost/hardware_cost conversion ration */
+	float inline_cost_per_hardware_cost;
 };
 
 static INLINE struct nvfx_screen *