1 files changed, 706 insertions, 0 deletions
diff --git a/i965/brw_context.h b/i965/brw_context.h
new file mode 100644
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+++ b/i965/brw_context.h
@@ -0,0 +1,706 @@
+/*
+ Copyright (C) Intel Corp.  2006.  All Rights Reserved.
+ Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
+ develop this 3D driver.
+ 
+ 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, sublicense, 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 NONINFRINGEMENT.
+ IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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.
+ 
+ **********************************************************************/
+ /*
+  * Authors:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  */
+
+
+#ifndef BRWCONTEXT_INC
+#define BRWCONTEXT_INC
+
+#include "intel_context.h"
+#include "brw_structs.h"
+#include "imports.h"
+
+
+/* Glossary:
+ *
+ * URB - uniform resource buffer.  A mid-sized buffer which is
+ * partitioned between the fixed function units and used for passing
+ * values (vertices, primitives, constants) between them.
+ *
+ * CURBE - constant URB entry.  An urb region (entry) used to hold
+ * constant values which the fixed function units can be instructed to
+ * preload into the GRF when spawining a thread.
+ *
+ * VUE - vertex URB entry.  An urb entry holding a vertex and usually
+ * a vertex header.  The header contains control information and
+ * things like primitive type, Begin/end flags and clip codes.  
+ *
+ * PUE - primitive URB entry.  An urb entry produced by the setup (SF)
+ * unit holding rasterization and interpolation parameters.
+ *
+ * GRF - general register file.  One of several register files
+ * addressable by programmed threads.  The inputs (r0, payload, curbe,
+ * urb) of the thread are preloaded to this area before the thread is
+ * spawned.  The registers are individually 8 dwords wide and suitable
+ * for general usage.  Registers holding thread input values are not
+ * special and may be overwritten.
+ *
+ * MRF - message register file.  Threads communicate (and terminate)
+ * by sending messages.  Message parameters are placed in contigous
+ * MRF registers.  All program output is via these messages.  URB
+ * entries are populated by sending a message to the shared URB
+ * function containing the new data, together with a control word,
+ * often an unmodified copy of R0.
+ *
+ * R0 - GRF register 0.  Typically holds control information used when
+ * sending messages to other threads.
+ *
+ * EU or GEN4 EU: The name of the programmable subsystem of the
+ * i965 hardware.  Threads are executed by the EU, the registers
+ * described above are part of the EU architecture.
+ *
+ * Fixed function units:
+ *
+ * CS - Command streamer.  Notional first unit, little software
+ * interaction.  Holds the URB entries used for constant data, ie the
+ * CURBEs.
+ *
+ * VF/VS - Vertex Fetch / Vertex Shader.  The fixed function part of
+ * this unit is responsible for pulling vertices out of vertex buffers
+ * in vram and injecting them into the processing pipe as VUEs.  If
+ * enabled, it first passes them to a VS thread which is a good place
+ * for the driver to implement any active vertex shader.
+ *
+ * GS - Geometry Shader.  This corresponds to a new DX10 concept.  If
+ * enabled, incoming strips etc are passed to GS threads in individual
+ * line/triangle/point units.  The GS thread may perform arbitary
+ * computation and emit whatever primtives with whatever vertices it
+ * chooses.  This makes GS an excellent place to implement GL's
+ * unfilled polygon modes, though of course it is capable of much
+ * more.  Additionally, GS is used to translate away primitives not
+ * handled by latter units, including Quads and Lineloops.
+ *
+ * CS - Clipper.  Mesa's clipping algorithms are imported to run on
+ * this unit.  The fixed function part performs cliptesting against
+ * the 6 fixed clipplanes and makes descisions on whether or not the
+ * incoming primitive needs to be passed to a thread for clipping.
+ * User clip planes are handled via cooperation with the VS thread.
+ *
+ * SF - Strips Fans or Setup: Triangles are prepared for
+ * rasterization.  Interpolation coefficients are calculated.
+ * Flatshading and two-side lighting usually performed here.
+ *
+ * WM - Windower.  Interpolation of vertex attributes performed here.
+ * Fragment shader implemented here.  SIMD aspects of EU taken full
+ * advantage of, as pixels are processed in blocks of 16.
+ *
+ * CC - Color Calculator.  No EU threads associated with this unit.
+ * Handles blending and (presumably) depth and stencil testing.
+ */
+
+#define BRW_FALLBACK_TEXTURE		 0x1
+#define BRW_MAX_CURBE                    (32*16)
+
+struct brw_context;
+
+#define BRW_NEW_URB_FENCE               0x1
+#define BRW_NEW_FRAGMENT_PROGRAM        0x2
+#define BRW_NEW_VERTEX_PROGRAM          0x4
+#define BRW_NEW_INPUT_DIMENSIONS        0x8
+#define BRW_NEW_CURBE_OFFSETS           0x10
+#define BRW_NEW_REDUCED_PRIMITIVE       0x20
+#define BRW_NEW_PRIMITIVE               0x40
+#define BRW_NEW_CONTEXT                 0x80
+#define BRW_NEW_WM_INPUT_DIMENSIONS     0x100
+#define BRW_NEW_INPUT_VARYING           0x200
+#define BRW_NEW_TNL_PROGRAM             0x400
+#define BRW_NEW_PSP                     0x800
+#define BRW_NEW_METAOPS                 0x1000
+#define BRW_NEW_FENCE                   0x2000
+#define BRW_NEW_LOCK                    0x4000
+
+
+
+struct brw_state_flags {
+   GLuint mesa;
+   GLuint cache;
+   GLuint brw;
+};
+
+struct brw_vertex_program {
+   struct gl_vertex_program program;
+   GLuint id;
+   GLuint param_state;		/* flags indicating state tracked by params */
+};
+
+
+
+struct brw_fragment_program {
+   struct gl_fragment_program program;
+   GLuint id;
+   GLuint param_state;		/* flags indicating state tracked by params */
+};
+
+
+
+
+/* Data about a particular attempt to compile a program.  Note that
+ * there can be many of these, each in a different GL state
+ * corresponding to a different brw_wm_prog_key struct, with different
+ * compiled programs:
+ */
+struct brw_wm_prog_data {
+   GLuint curb_read_length;
+   GLuint urb_read_length;
+
+   GLuint first_curbe_grf;
+   GLuint total_grf;
+   GLuint total_scratch;
+
+   GLuint nr_params;
+   GLboolean error;
+
+   /* Pointer to tracked values (only valid once
+    * _mesa_load_state_parameters has been called at runtime).
+    */
+   const GLfloat *param[BRW_MAX_CURBE];
+};
+
+struct brw_sf_prog_data {
+   GLuint urb_read_length;
+   GLuint total_grf;
+
+   /* Each vertex may have upto 12 attributes, 4 components each,
+    * except WPOS which requires only 2.  (11*4 + 2) == 44 ==> 11
+    * rows.
+    *
+    * Actually we use 4 for each, so call it 12 rows.
+    */
+   GLuint urb_entry_size;
+};
+
+struct brw_clip_prog_data {
+   GLuint curb_read_length;	/* user planes? */
+   GLuint clip_mode;
+   GLuint urb_read_length;
+   GLuint total_grf;
+};
+
+struct brw_gs_prog_data {
+   GLuint urb_read_length;
+   GLuint total_grf;
+};
+
+struct brw_vs_prog_data {
+   GLuint curb_read_length;
+   GLuint urb_read_length;
+   GLuint total_grf;
+   GLuint outputs_written;
+
+   GLuint inputs_read;
+
+   /* Used for calculating urb partitions:
+    */
+   GLuint urb_entry_size;
+};
+
+
+/* Size == 0 if output either not written, or always [0,0,0,1]
+ */
+struct brw_vs_ouput_sizes {
+   GLubyte output_size[VERT_RESULT_MAX];
+};
+
+
+#define BRW_MAX_TEX_UNIT 8
+#define BRW_WM_MAX_SURF BRW_MAX_TEX_UNIT + 1
+
+/* Create a fixed sized struct for caching binding tables:
+ */
+struct brw_surface_binding_table {
+   GLuint surf_ss_offset[BRW_WM_MAX_SURF];
+};
+
+
+struct brw_cache;
+
+struct brw_mem_pool {
+   struct buffer *buffer;
+
+   GLuint size;
+   GLuint offset;		/* offset of first free byte */
+
+   struct brw_context *brw;
+};
+
+struct brw_cache_item {
+   GLuint hash;
+   GLuint key_size;		/* for variable-sized keys */
+   const void *key;
+
+   GLuint offset;		/* offset within pool's buffer */
+   GLuint data_size;
+
+   struct brw_cache_item *next;
+};   
+
+
+
+struct brw_cache {
+   GLuint id;
+
+   const char *name;
+
+   struct brw_context *brw;
+   struct brw_mem_pool *pool;
+
+   struct brw_cache_item **items;
+   GLuint size, n_items;
+   
+   GLuint key_size;		/* for fixed-size keys */
+   GLuint aux_size;
+
+   GLuint aub_type;
+   GLuint aub_sub_type;
+   
+   GLuint last_addr;			/* offset of active item */
+};
+
+
+
+struct brw_state_pointers {
+   struct gl_colorbuffer_attrib	*Color;
+   struct gl_depthbuffer_attrib	*Depth;
+   struct gl_fog_attrib		*Fog;
+   struct gl_hint_attrib	*Hint;
+   struct gl_light_attrib	*Light;
+   struct gl_line_attrib	*Line;
+   struct gl_point_attrib	*Point;
+   struct gl_polygon_attrib	*Polygon;
+   GLuint                       *PolygonStipple;
+   struct gl_scissor_attrib	*Scissor;
+   struct gl_stencil_attrib	*Stencil;
+   struct gl_texture_attrib	*Texture;
+   struct gl_transform_attrib	*Transform;
+   struct gl_viewport_attrib	*Viewport;
+   struct gl_vertex_program_state *VertexProgram; 
+   struct gl_fragment_program_state *FragmentProgram;
+};
+
+/* Considered adding a member to this struct to document which flags
+ * an update might raise so that ordering of the state atoms can be
+ * checked or derived at runtime.  Dropped the idea in favor of having
+ * a debug mode where the state is monitored for flags which are
+ * raised that have already been tested against.
+ */
+struct brw_tracked_state {
+   struct brw_state_flags dirty;
+   void (*update)( struct brw_context *brw );
+};
+
+
+enum brw_cache_id {
+   BRW_CC_VP,
+   BRW_CC_UNIT,
+   BRW_WM_PROG,
+   BRW_SAMPLER_DEFAULT_COLOR,
+   BRW_SAMPLER,
+   BRW_WM_UNIT,
+   BRW_SF_PROG,
+   BRW_SF_VP,
+   BRW_SF_UNIT,
+   BRW_VS_UNIT,
+   BRW_VS_PROG,
+   BRW_GS_UNIT,
+   BRW_GS_PROG,
+   BRW_CLIP_VP,
+   BRW_CLIP_UNIT,
+   BRW_CLIP_PROG,
+
+   /* These two are in the SS pool:
+    */
+   BRW_SS_SURFACE,
+   BRW_SS_SURF_BIND,
+
+   BRW_MAX_CACHE
+};
+
+/* Flags for brw->state.cache.
+ */
+#define CACHE_NEW_CC_VP                  (1<<BRW_CC_VP)
+#define CACHE_NEW_CC_UNIT                (1<<BRW_CC_UNIT)
+#define CACHE_NEW_WM_PROG                (1<<BRW_WM_PROG)
+#define CACHE_NEW_SAMPLER_DEFAULT_COLOR  (1<<BRW_SAMPLER_DEFAULT_COLOR)
+#define CACHE_NEW_SAMPLER                (1<<BRW_SAMPLER)
+#define CACHE_NEW_WM_UNIT                (1<<BRW_WM_UNIT)
+#define CACHE_NEW_SF_PROG                (1<<BRW_SF_PROG)
+#define CACHE_NEW_SF_VP                  (1<<BRW_SF_VP)
+#define CACHE_NEW_SF_UNIT                (1<<BRW_SF_UNIT)
+#define CACHE_NEW_VS_UNIT                (1<<BRW_VS_UNIT)
+#define CACHE_NEW_VS_PROG                (1<<BRW_VS_PROG)
+#define CACHE_NEW_GS_UNIT                (1<<BRW_GS_UNIT)
+#define CACHE_NEW_GS_PROG                (1<<BRW_GS_PROG)
+#define CACHE_NEW_CLIP_VP                (1<<BRW_CLIP_VP)
+#define CACHE_NEW_CLIP_UNIT              (1<<BRW_CLIP_UNIT)
+#define CACHE_NEW_CLIP_PROG              (1<<BRW_CLIP_PROG)
+#define CACHE_NEW_SURFACE                (1<<BRW_SS_SURFACE)
+#define CACHE_NEW_SURF_BIND              (1<<BRW_SS_SURF_BIND)
+
+
+
+
+enum brw_mempool_id {
+   BRW_GS_POOL,
+   BRW_SS_POOL,
+   BRW_MAX_POOL
+};
+
+
+struct brw_cached_batch_item {
+   struct header *header;
+   GLuint sz;
+   struct brw_cached_batch_item *next;
+};
+   
+
+
+/* Protect against a future where VERT_ATTRIB_MAX > 32.  Wouldn't life
+ * be easier if C allowed arrays of packed elements?
+ */
+#define ATTRIB_BIT_DWORDS  ((VERT_ATTRIB_MAX+31)/32)
+
+struct brw_vertex_element {
+   const struct gl_client_array *glarray;
+
+   struct brw_vertex_element_state *vep;
+
+   GLuint index;
+   GLuint element_size;
+   GLuint count;
+   GLuint vbo_rebase_offset;
+};
+
+
+
+struct brw_vertex_info {
+   GLuint varying;  /* varying:1[VERT_ATTRIB_MAX] */
+   GLuint sizes[ATTRIB_BIT_DWORDS * 2]; /* sizes:2[VERT_ATTRIB_MAX] */
+};
+
+
+
+
+/* Cache for TNL programs.
+ */
+struct brw_tnl_cache_item {
+   GLuint hash;
+   void *key;
+   void *data;
+   struct brw_tnl_cache_item *next;
+};
+
+struct brw_tnl_cache {
+   struct brw_tnl_cache_item **items;
+   GLuint size, n_items;
+};
+
+
+
+struct brw_context 
+{
+   struct intel_context intel;
+   GLuint primitive;
+
+   GLboolean emit_state_always;
+   GLboolean wrap;
+   GLboolean tmp_fallback;
+
+   struct {
+      struct brw_state_flags dirty;
+      struct brw_tracked_state **atoms;
+      GLuint nr_atoms;
+
+
+      struct intel_region *draw_region;
+      struct intel_region *depth_region;
+   } state;
+
+   struct brw_state_pointers attribs;
+   struct brw_mem_pool pool[BRW_MAX_POOL];
+   struct brw_cache cache[BRW_MAX_CACHE];
+   struct brw_cached_batch_item *cached_batch_items;
+
+   struct {
+
+      /* Arrays with buffer objects to copy non-bufferobj arrays into
+       * for upload:
+       */
+      struct gl_client_array vbo_array[VERT_ATTRIB_MAX];
+
+      struct brw_vertex_element inputs[VERT_ATTRIB_MAX];
+
+#define BRW_NR_UPLOAD_BUFS 17
+#define BRW_UPLOAD_INIT_SIZE (128*1024)
+
+      struct {
+	 struct gl_buffer_object *vbo[BRW_NR_UPLOAD_BUFS];
+	 GLuint buf;
+	 GLuint offset;
+	 GLuint size;
+	 GLuint wrap;
+      } upload;
+
+      /* Summary of size and varying of active arrays, so we can check
+       * for changes to this state:
+       */
+      struct brw_vertex_info info;
+   } vb;
+
+   struct {
+      /* Will be allocated on demand if needed.   
+       */
+      struct brw_state_pointers attribs;
+      struct gl_vertex_program *vp;
+      struct gl_fragment_program *fp, *fp_tex;
+
+      struct gl_buffer_object *vbo;
+
+      struct intel_region *saved_draw_region;
+      struct intel_region *saved_depth_region;
+
+      GLuint restore_draw_mask;
+      struct gl_fragment_program *restore_fp;
+      
+      GLboolean active;
+   } metaops;
+
+   /* Track fixed function t&l in a vertex program:
+    */
+   struct gl_vertex_program *tnl_program;
+   struct brw_tnl_cache tnl_program_cache;
+
+   /* Active vertex program: 
+    */
+   const struct gl_vertex_program *vertex_program;
+   const struct gl_fragment_program *fragment_program;
+
+
+   /* For populating the gtt:
+    */
+   GLuint next_free_page;
+
+
+   /* BRW_NEW_URB_ALLOCATIONS:
+    */
+   struct {
+      GLuint vsize;		/* vertex size plus header in urb registers */
+      GLuint csize;		/* constant buffer size in urb registers */
+      GLuint sfsize;		/* setup data size in urb registers */
+
+      GLboolean constrained;
+
+      GLuint nr_vs_entries;
+      GLuint nr_gs_entries;
+      GLuint nr_clip_entries;
+      GLuint nr_sf_entries;
+      GLuint nr_cs_entries;
+
+/*       GLuint vs_size; */
+/*       GLuint gs_size; */
+/*       GLuint clip_size; */
+/*       GLuint sf_size; */
+/*       GLuint cs_size; */
+
+      GLuint vs_start;
+      GLuint gs_start;
+      GLuint clip_start;
+      GLuint sf_start;
+      GLuint cs_start;
+   } urb;
+
+   
+   /* BRW_NEW_CURBE_OFFSETS: 
+    */
+   struct {
+      GLuint wm_start;
+      GLuint wm_size;
+      GLuint clip_start;
+      GLuint clip_size;
+      GLuint vs_start;
+      GLuint vs_size;
+      GLuint total_size;
+
+      /* Dynamic tracker which changes to reflect the state referenced
+       * by active fp and vp program parameters:
+       */
+      struct brw_tracked_state tracked_state;
+
+      GLuint gs_offset;
+
+      GLfloat *last_buf;
+      GLuint last_bufsz;
+   } curbe;
+
+   struct {
+      struct brw_vs_prog_data *prog_data;
+
+      GLuint prog_gs_offset;
+      GLuint state_gs_offset;	
+   } vs;
+
+   struct {
+      struct brw_gs_prog_data *prog_data;
+
+      GLboolean prog_active;
+      GLuint prog_gs_offset;
+      GLuint state_gs_offset;	
+   } gs;
+
+   struct {
+      struct brw_clip_prog_data *prog_data;
+
+      GLuint prog_gs_offset;
+      GLuint vp_gs_offset;
+      GLuint state_gs_offset;	
+   } clip;
+
+
+   struct {
+      struct brw_sf_prog_data *prog_data;
+
+      GLuint prog_gs_offset;
+      GLuint vp_gs_offset;
+      GLuint state_gs_offset;
+   } sf;
+
+   struct {
+      struct brw_wm_prog_data *prog_data;
+      struct brw_wm_compile *compile_data;
+
+      /* Input sizes, calculated from active vertex program:
+       */
+      GLuint input_size_masks[4];
+
+
+      /* State structs
+       */
+      struct brw_sampler_default_color sdc[BRW_MAX_TEX_UNIT];
+      struct brw_sampler_state sampler[BRW_MAX_TEX_UNIT];
+
+      GLuint render_surf;
+      GLuint nr_surfaces;      
+
+      GLuint max_threads;
+      struct buffer *scratch_buffer;
+      GLuint scratch_buffer_size;
+
+      GLuint sampler_count;
+      GLuint sampler_gs_offset;
+
+      struct brw_surface_binding_table bind;
+      GLuint bind_ss_offset;
+
+      GLuint prog_gs_offset;
+      GLuint state_gs_offset;
+   } wm;
+
+
+   struct {
+      GLuint vp_gs_offset;
+      GLuint state_gs_offset;
+   } cc;
+
+   
+   /* Used to give every program string a unique id
+    */
+   GLuint program_id;
+};
+
+
+#define BRW_PACKCOLOR8888(r,g,b,a)  ((r<<24) | (g<<16) | (b<<8) | a)
+
+
+
+/*======================================================================
+ * brw_vtbl.c
+ */
+void brwInitVtbl( struct brw_context *brw );
+void brw_do_flush( struct brw_context *brw, 
+		   GLuint flags );
+
+/*======================================================================
+ * brw_context.c
+ */
+GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
+			    __DRIcontextPrivate *driContextPriv,
+			    void *sharedContextPrivate);
+
+
+
+/*======================================================================
+ * brw_state.c
+ */
+void brw_validate_state( struct brw_context *brw );
+void brw_init_state( struct brw_context *brw );
+void brw_destroy_state( struct brw_context *brw );
+
+
+
+/*======================================================================
+ * brw_tex.c
+ */
+void brwUpdateTextureState( struct intel_context *intel );
+void brwInitTextureFuncs( struct dd_function_table *functions );
+void brw_FrameBufferTexInit( struct brw_context *brw );
+void brw_FrameBufferTexDestroy( struct brw_context *brw );
+
+/*======================================================================
+ * brw_metaops.c
+ */
+
+void brw_init_metaops( struct brw_context *brw );
+void brw_destroy_metaops( struct brw_context *brw );
+
+
+/*======================================================================
+ * brw_program.c
+ */
+void brwInitFragProgFuncs( struct dd_function_table *functions );
+
+
+/* brw_urb.c
+ */
+void brw_upload_urb_fence(struct brw_context *brw);
+
+void brw_upload_constant_buffer_state(struct brw_context *brw);
+
+
+/*======================================================================
+ * Inline conversion functions.  These are better-typed than the
+ * macros used previously:
+ */
+static inline struct brw_context *
+brw_context( GLcontext *ctx )
+{
+   return (struct brw_context *)ctx;
+}
+
+#endif
+