freedreno/a4xx: better occlusion/sample counting
[mesa.git] / src / gallium / drivers / freedreno / freedreno_context.h
index 4ed31593d4143559cbd7494b599f05add5571fc1..85ce97c16b79c377c64e3d5b3396364155c28b20 100644 (file)
 #ifndef FREEDRENO_CONTEXT_H_
 #define FREEDRENO_CONTEXT_H_
 
-#include "draw/draw_context.h"
 #include "pipe/p_context.h"
+#include "indices/u_primconvert.h"
 #include "util/u_blitter.h"
+#include "util/list.h"
 #include "util/u_slab.h"
 #include "util/u_string.h"
 
 #include "freedreno_screen.h"
+#include "freedreno_gmem.h"
+#include "freedreno_util.h"
+
+#define BORDER_COLOR_UPLOAD_SIZE (2 * PIPE_MAX_SAMPLERS * BORDERCOLOR_SIZE)
 
-struct fd_blend_stateobj;
-struct fd_rasterizer_stateobj;
-struct fd_zsa_stateobj;
-struct fd_sampler_stateobj;
 struct fd_vertex_stateobj;
-struct fd_shader_stateobj;
 
 struct fd_texture_stateobj {
        struct pipe_sampler_view *textures[PIPE_MAX_SAMPLERS];
        unsigned num_textures;
-       struct fd_sampler_stateobj *samplers[PIPE_MAX_SAMPLERS];
+       struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
        unsigned num_samplers;
        unsigned dirty_samplers;
 };
 
 struct fd_program_stateobj {
-       struct fd_shader_stateobj *vp, *fp;
+       void *vp, *fp;
        enum {
                FD_SHADER_DIRTY_VP = (1 << 0),
                FD_SHADER_DIRTY_FP = (1 << 1),
@@ -79,38 +79,136 @@ struct fd_vertexbuf_stateobj {
        uint32_t dirty_mask;
 };
 
-struct fd_gmem_stateobj {
-       struct pipe_scissor_state scissor;
-       uint cpp;
-       uint16_t minx, miny;
-       uint16_t bin_h, nbins_y;
-       uint16_t bin_w, nbins_x;
-       uint16_t width, height;
+struct fd_vertex_stateobj {
+       struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
+       unsigned num_elements;
+};
+
+struct fd_streamout_stateobj {
+       struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
+       unsigned num_targets;
+       /* Track offset from vtxcnt for streamout data.  This counter
+        * is just incremented by # of vertices on each draw until
+        * reset or new streamout buffer bound.
+        *
+        * When we eventually have GS, the CPU won't actually know the
+        * number of vertices per draw, so I think we'll have to do
+        * something more clever.
+        */
+       unsigned offsets[PIPE_MAX_SO_BUFFERS];
+};
+
+/* group together the vertex and vertexbuf state.. for ease of passing
+ * around, and because various internal operations (gmem<->mem, etc)
+ * need their own vertex state:
+ */
+struct fd_vertex_state {
+       struct fd_vertex_stateobj *vtx;
+       struct fd_vertexbuf_stateobj vertexbuf;
 };
 
+/* Bitmask of stages in rendering that a particular query query is
+ * active.  Queries will be automatically started/stopped (generating
+ * additional fd_hw_sample_period's) on entrance/exit from stages that
+ * are applicable to the query.
+ *
+ * NOTE: set the stage to NULL at end of IB to ensure no query is still
+ * active.  Things aren't going to work out the way you want if a query
+ * is active across IB's (or between tile IB and draw IB)
+ */
+enum fd_render_stage {
+       FD_STAGE_NULL     = 0x00,
+       FD_STAGE_DRAW     = 0x01,
+       FD_STAGE_CLEAR    = 0x02,
+       /* TODO before queries which include MEM2GMEM or GMEM2MEM will
+        * work we will need to call fd_hw_query_prepare() from somewhere
+        * appropriate so that queries in the tiling IB get backed with
+        * memory to write results to.
+        */
+       FD_STAGE_MEM2GMEM = 0x04,
+       FD_STAGE_GMEM2MEM = 0x08,
+       /* used for driver internal draws (ie. util_blitter_blit()): */
+       FD_STAGE_BLIT     = 0x10,
+};
+
+#define MAX_HW_SAMPLE_PROVIDERS 4
+struct fd_hw_sample_provider;
+struct fd_hw_sample;
+
 struct fd_context {
        struct pipe_context base;
 
+       struct fd_device *dev;
        struct fd_screen *screen;
+
        struct blitter_context *blitter;
+       struct primconvert_context *primconvert;
 
+       /* slab for pipe_transfer allocations: */
        struct util_slab_mempool transfer_pool;
 
+       /* slabs for fd_hw_sample and fd_hw_sample_period allocations: */
+       struct util_slab_mempool sample_pool;
+       struct util_slab_mempool sample_period_pool;
+
+       /* next sample offset.. incremented for each sample in the batch/
+        * submit, reset to zero on next submit.
+        */
+       uint32_t next_sample_offset;
+
+       /* sample-providers for hw queries: */
+       const struct fd_hw_sample_provider *sample_providers[MAX_HW_SAMPLE_PROVIDERS];
+
+       /* cached samples (in case multiple queries need to reference
+        * the same sample snapshot)
+        */
+       struct fd_hw_sample *sample_cache[MAX_HW_SAMPLE_PROVIDERS];
+
+       /* which sample providers were active in the current batch: */
+       uint32_t active_providers;
+
+       /* tracking for current stage, to know when to start/stop
+        * any active queries:
+        */
+       enum fd_render_stage stage;
+
+       /* list of active queries: */
+       struct list_head active_queries;
+
+       /* list of queries that are not active, but were active in the
+        * current submit:
+        */
+       struct list_head current_queries;
+
+       /* current query result bo and tile stride: */
+       struct fd_bo *query_bo;
+       uint32_t query_tile_stride;
+
+       /* list of resources used by currently-unsubmitted renders */
+       struct list_head used_resources;
+
+       /* table with PIPE_PRIM_MAX entries mapping PIPE_PRIM_x to
+        * DI_PT_x value to use for draw initiator.  There are some
+        * slight differences between generation:
+        */
+       const uint8_t *primtypes;
+       uint32_t primtype_mask;
+
        /* shaders used by clear, and gmem->mem blits: */
        struct fd_program_stateobj solid_prog; // TODO move to screen?
 
        /* shaders used by mem->gmem blits: */
-       struct fd_program_stateobj blit_prog; // TODO move to screen?
-
-       /* vertex buff used for clear/gmem->mem vertices, and mem->gmem
-        * vertices and tex coords:
-        */
-       struct pipe_resource *solid_vertexbuf;
+       struct fd_program_stateobj blit_prog[MAX_RENDER_TARGETS]; // TODO move to screen?
+       struct fd_program_stateobj blit_z, blit_zs;
 
        /* do we need to mem2gmem before rendering.  We don't, if for example,
         * there was a glClear() that invalidated the entire previous buffer
         * contents.  Keep track of which buffer(s) are cleared, or needs
         * restore.  Masks of PIPE_CLEAR_*
+        *
+        * The 'cleared' bits will be set for buffers which are *entirely*
+        * cleared, and 'partial_cleared' bits will be set if you must
+        * check cleared_scissor.
         */
        enum {
                /* align bitmask values w/ PIPE_CLEAR_*.. since that is convenient.. */
@@ -118,60 +216,142 @@ struct fd_context {
                FD_BUFFER_DEPTH   = PIPE_CLEAR_DEPTH,
                FD_BUFFER_STENCIL = PIPE_CLEAR_STENCIL,
                FD_BUFFER_ALL     = FD_BUFFER_COLOR | FD_BUFFER_DEPTH | FD_BUFFER_STENCIL,
-       } cleared, restore, resolve;
+       } cleared, partial_cleared, restore, resolve;
 
        bool needs_flush;
 
+       /* To decide whether to render to system memory, keep track of the
+        * number of draws, and whether any of them require multisample,
+        * depth_test (or depth write), stencil_test, blending, and
+        * color_logic_Op (since those functions are disabled when by-
+        * passing GMEM.
+        */
+       enum {
+               FD_GMEM_CLEARS_DEPTH_STENCIL = 0x01,
+               FD_GMEM_DEPTH_ENABLED        = 0x02,
+               FD_GMEM_STENCIL_ENABLED      = 0x04,
+
+               FD_GMEM_MSAA_ENABLED         = 0x08,
+               FD_GMEM_BLEND_ENABLED        = 0x10,
+               FD_GMEM_LOGICOP_ENABLED      = 0x20,
+       } gmem_reason;
+       unsigned num_draws;   /* number of draws in current batch */
+
+       /* Stats/counters:
+        */
+       struct {
+               uint64_t prims_emitted;
+               uint64_t draw_calls;
+               uint64_t batch_total, batch_sysmem, batch_gmem, batch_restore;
+       } stats;
+
+       /* we can't really sanely deal with wraparound point in ringbuffer
+        * and because of the way tiling works we can't really flush at
+        * arbitrary points (without a big performance hit).  When we get
+        * too close to the end of the current ringbuffer, cycle to the next
+        * one (and wait for pending rendering from next rb to complete).
+        * We want the # of ringbuffers to be high enough that we don't
+        * normally have to wait before resetting to the start of the next
+        * rb.
+        */
+       struct fd_ringbuffer *rings[8];
+       unsigned rings_idx;
+
+       /* NOTE: currently using a single ringbuffer for both draw and
+        * tiling commands, we need to make sure we need to leave enough
+        * room at the end to append the tiling commands when we flush.
+        * 0x7000 dwords should be a couple times more than we ever need
+        * so should be a nice conservative threshold.
+        */
+#define FD_TILING_COMMANDS_DWORDS 0x7000
+
+       /* normal draw/clear cmds: */
        struct fd_ringbuffer *ring;
        struct fd_ringmarker *draw_start, *draw_end;
 
-       /* scissor can't really be changed mid-render.. we probably need
-        * to flush out all pending draws and then start a new tile pass
-        * w/ new stencil state..
+       /* binning pass draw/clear cmds: */
+       struct fd_ringbuffer *binning_ring;
+       struct fd_ringmarker *binning_start, *binning_end;
+
+       /* Keep track if WAIT_FOR_IDLE is needed for registers we need
+        * to update via RMW:
+        */
+       bool needs_wfi;
+
+       /* Do we need to re-emit RB_FRAME_BUFFER_DIMENSION?  At least on a3xx
+        * it is not a banked context register, so it needs a WFI to update.
+        * Keep track if it has actually changed, to avoid unneeded WFI.
+        * */
+       bool needs_rb_fbd;
+
+       /* Keep track of DRAW initiators that need to be patched up depending
+        * on whether we using binning or not:
         */
+       struct util_dynarray draw_patches;
+
        struct pipe_scissor_state scissor;
 
+       /* we don't have a disable/enable bit for scissor, so instead we keep
+        * a disabled-scissor state which matches the entire bound framebuffer
+        * and use that when scissor is not enabled.
+        */
+       struct pipe_scissor_state disabled_scissor;
+
        /* Track the maximal bounds of the scissor of all the draws within a
         * batch.  Used at the tile rendering step (fd_gmem_render_tiles(),
         * mem2gmem/gmem2mem) to avoid needlessly moving data in/out of gmem.
         */
        struct pipe_scissor_state max_scissor;
 
+       /* Track the cleared scissor for color/depth/stencil, so we know
+        * which, if any, tiles need to be restored (mem2gmem).  Only valid
+        * if the corresponding bit in ctx->cleared is set.
+        */
+       struct {
+               struct pipe_scissor_state color, depth, stencil;
+       } cleared_scissor;
+
        /* Current gmem/tiling configuration.. gets updated on render_tiles()
         * if out of date with current maximal-scissor/cpp:
         */
        struct fd_gmem_stateobj gmem;
+       struct fd_vsc_pipe      pipe[8];
+       struct fd_tile          tile[256];
 
        /* which state objects need to be re-emit'd: */
        enum {
-               FD_DIRTY_BLEND       = (1 << 0),
-               FD_DIRTY_RASTERIZER  = (1 << 1),
-               FD_DIRTY_ZSA         = (1 << 2),
-               FD_DIRTY_FRAGTEX     = (1 << 3),
-               FD_DIRTY_VERTTEX     = (1 << 4),
-               FD_DIRTY_PROG        = (1 << 5),
-               FD_DIRTY_VTX         = (1 << 6),
-               FD_DIRTY_BLEND_COLOR = (1 << 7),
-               FD_DIRTY_STENCIL_REF = (1 << 8),
-               FD_DIRTY_SAMPLE_MASK = (1 << 9),
+               FD_DIRTY_BLEND       = (1 <<  0),
+               FD_DIRTY_RASTERIZER  = (1 <<  1),
+               FD_DIRTY_ZSA         = (1 <<  2),
+               FD_DIRTY_FRAGTEX     = (1 <<  3),
+               FD_DIRTY_VERTTEX     = (1 <<  4),
+               FD_DIRTY_TEXSTATE    = (1 <<  5),
+               FD_DIRTY_PROG        = (1 <<  6),
+               FD_DIRTY_BLEND_COLOR = (1 <<  7),
+               FD_DIRTY_STENCIL_REF = (1 <<  8),
+               FD_DIRTY_SAMPLE_MASK = (1 <<  9),
                FD_DIRTY_FRAMEBUFFER = (1 << 10),
-               FD_DIRTY_STIPPLE     = (1 << 12),
+               FD_DIRTY_STIPPLE     = (1 << 11),
                FD_DIRTY_VIEWPORT    = (1 << 12),
                FD_DIRTY_CONSTBUF    = (1 << 13),
-               FD_DIRTY_VERTEXBUF   = (1 << 14),
-               FD_DIRTY_INDEXBUF    = (1 << 15),
-               FD_DIRTY_SCISSOR     = (1 << 16),
+               FD_DIRTY_VTXSTATE    = (1 << 14),
+               FD_DIRTY_VTXBUF      = (1 << 15),
+               FD_DIRTY_INDEXBUF    = (1 << 16),
+               FD_DIRTY_SCISSOR     = (1 << 17),
+               FD_DIRTY_STREAMOUT   = (1 << 18),
+               FD_DIRTY_UCP         = (1 << 19),
+               FD_DIRTY_BLEND_DUAL  = (1 << 20),
        } dirty;
 
-       struct fd_blend_stateobj *blend;
-       struct fd_rasterizer_stateobj *rasterizer;
-       struct fd_zsa_stateobj *zsa;
+       struct pipe_blend_state *blend;
+       struct pipe_rasterizer_state *rasterizer;
+       struct pipe_depth_stencil_alpha_state *zsa;
 
        struct fd_texture_stateobj verttex, fragtex;
 
        struct fd_program_stateobj prog;
 
-       struct fd_vertex_stateobj *vtx;
+       struct fd_vertex_state vtx;
 
        struct pipe_blend_color blend_color;
        struct pipe_stencil_ref stencil_ref;
@@ -180,18 +360,96 @@ struct fd_context {
        struct pipe_poly_stipple stipple;
        struct pipe_viewport_state viewport;
        struct fd_constbuf_stateobj constbuf[PIPE_SHADER_TYPES];
-       struct fd_vertexbuf_stateobj vertexbuf;
        struct pipe_index_buffer indexbuf;
+       struct fd_streamout_stateobj streamout;
+       struct pipe_clip_state ucp;
+
+       struct pipe_query *cond_query;
+       bool cond_cond; /* inverted rendering condition */
+       uint cond_mode;
+
+       /* GMEM/tile handling fxns: */
+       void (*emit_tile_init)(struct fd_context *ctx);
+       void (*emit_tile_prep)(struct fd_context *ctx, struct fd_tile *tile);
+       void (*emit_tile_mem2gmem)(struct fd_context *ctx, struct fd_tile *tile);
+       void (*emit_tile_renderprep)(struct fd_context *ctx, struct fd_tile *tile);
+       void (*emit_tile_gmem2mem)(struct fd_context *ctx, struct fd_tile *tile);
+
+       /* optional, for GMEM bypass: */
+       void (*emit_sysmem_prep)(struct fd_context *ctx);
+
+       /* draw: */
+       void (*draw_vbo)(struct fd_context *ctx, const struct pipe_draw_info *info);
+       void (*clear)(struct fd_context *ctx, unsigned buffers,
+                       const union pipe_color_union *color, double depth, unsigned stencil);
+
+       /* constant emit:  (note currently not used/needed for a2xx) */
+       void (*emit_const)(struct fd_ringbuffer *ring, enum shader_t type,
+                       uint32_t regid, uint32_t offset, uint32_t sizedwords,
+                       const uint32_t *dwords, struct pipe_resource *prsc);
+       void (*emit_const_bo)(struct fd_ringbuffer *ring, enum shader_t type, boolean write,
+                       uint32_t regid, uint32_t num, struct fd_bo **bos, uint32_t *offsets);
+
+       /* indirect-branch emit: */
+       void (*emit_ib)(struct fd_ringbuffer *ring, struct fd_ringmarker *start,
+                       struct fd_ringmarker *end);
 };
 
-static INLINE struct fd_context *
+static inline struct fd_context *
 fd_context(struct pipe_context *pctx)
 {
        return (struct fd_context *)pctx;
 }
 
-struct pipe_context * fd_context_create(struct pipe_screen *pscreen, void *priv);
+static inline struct pipe_scissor_state *
+fd_context_get_scissor(struct fd_context *ctx)
+{
+       if (ctx->rasterizer && ctx->rasterizer->scissor)
+               return &ctx->scissor;
+       return &ctx->disabled_scissor;
+}
+
+static inline bool
+fd_supported_prim(struct fd_context *ctx, unsigned prim)
+{
+       return (1 << prim) & ctx->primtype_mask;
+}
+
+static inline void
+fd_reset_wfi(struct fd_context *ctx)
+{
+       ctx->needs_wfi = true;
+}
+
+/* emit a WAIT_FOR_IDLE only if needed, ie. if there has not already
+ * been one since last draw:
+ */
+static inline void
+fd_wfi(struct fd_context *ctx, struct fd_ringbuffer *ring)
+{
+       if (ctx->needs_wfi) {
+               OUT_WFI(ring);
+               ctx->needs_wfi = false;
+       }
+}
+
+/* emit a CP_EVENT_WRITE:
+ */
+static inline void
+fd_event_write(struct fd_context *ctx, struct fd_ringbuffer *ring,
+               enum vgt_event_type evt)
+{
+       OUT_PKT3(ring, CP_EVENT_WRITE, 1);
+       OUT_RING(ring, evt);
+       fd_reset_wfi(ctx);
+}
+
+struct pipe_context * fd_context_init(struct fd_context *ctx,
+               struct pipe_screen *pscreen, const uint8_t *primtypes,
+               void *priv);
 
 void fd_context_render(struct pipe_context *pctx);
 
+void fd_context_destroy(struct pipe_context *pctx);
+
 #endif /* FREEDRENO_CONTEXT_H_ */