llvmpipe: fix race between draw and setting fragment shader.
[mesa.git] / src / gallium / drivers / llvmpipe / lp_rast_priv.h
index 6ee9bcaae3ad493f57e3dfe8e1beb142b4eee35f..4b5ca81926a092e263fed58d5367d936ad6141b1 100644 (file)
 #ifndef LP_RAST_PRIV_H
 #define LP_RAST_PRIV_H
 
-#include "os/os_thread.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
+#include "util/u_thread.h"
 #include "gallivm/lp_bld_debug.h"
+#include "lp_memory.h"
 #include "lp_rast.h"
-#include "lp_tile_soa.h"
+#include "lp_scene.h"
+#include "lp_state.h"
+#include "lp_texture.h"
+#include "lp_limits.h"
 
 
-#define MAX_THREADS 8  /* XXX probably temporary here */
+#define TILE_VECTOR_HEIGHT 4
+#define TILE_VECTOR_WIDTH 4
 
+/* If we crash in a jitted function, we can examine jit_line and jit_state
+ * to get some info.  This is not thread-safe, however.
+ */
+#ifdef DEBUG
 
-struct lp_rasterizer;
+struct lp_rasterizer_task;
+extern int jit_line;
+extern const struct lp_rast_state *jit_state;
+extern const struct lp_rasterizer_task *jit_task;
 
+#define BEGIN_JIT_CALL(state, task)                  \
+   do { \
+      jit_line = __LINE__; \
+      jit_state = state; \
+      jit_task = task; \
+   } while (0)
+
+#define END_JIT_CALL() \
+   do { \
+      jit_line = 0; \
+      jit_state = NULL; \
+   } while (0)
+
+#else
+
+#define BEGIN_JIT_CALL(X, Y)
+#define END_JIT_CALL()
+
+#endif
 
-/**
- * A tile's color and depth memory.
- * We can choose whatever layout for the internal tile storage we prefer.
- */
-struct lp_rast_tile
-{
-   uint8_t *color[PIPE_MAX_COLOR_BUFS];
-};
 
+struct lp_rasterizer;
+struct cmd_bin;
 
 /**
  * Per-thread rasterization state
  */
 struct lp_rasterizer_task
 {
-   struct lp_rast_tile tile;   /** Tile color/z/stencil memory */
+   const struct cmd_bin *bin;
+   const struct lp_rast_state *state;
 
+   struct lp_scene *scene;
    unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
+   unsigned width, height; /**< width, height of current tile, in pixels */
 
-   const struct lp_rast_state *current_state;
+   uint8_t *color_tiles[PIPE_MAX_COLOR_BUFS];
+   uint8_t *depth_tile;
 
    /** "back" pointer */
    struct lp_rasterizer *rast;
@@ -68,6 +97,9 @@ struct lp_rasterizer_task
    /** "my" index */
    unsigned thread_index;
 
+   /** Non-interpolated passthru state and occlude counter for visible pixels */
+   struct lp_jit_thread_data thread_data;
+
    pipe_semaphore work_ready;
    pipe_semaphore work_done;
 };
@@ -81,85 +113,103 @@ struct lp_rasterizer_task
 struct lp_rasterizer
 {
    boolean exit_flag;
-
-   /* Framebuffer stuff
-    */
-   struct {
-      void *map;
-      unsigned stride;
-      unsigned width;
-      unsigned height;
-      enum pipe_format format;
-   } cbuf[PIPE_MAX_COLOR_BUFS];
-
-   struct {
-      uint8_t *map;
-      unsigned stride;
-      unsigned blocksize;
-   } zsbuf;
-
-   struct {
-      unsigned nr_cbufs;
-      boolean write_color;
-      boolean write_zstencil;
-      unsigned clear_color;
-      unsigned clear_depth;
-      char clear_stencil;
-   } state;
+   boolean no_rast;  /**< For debugging/profiling */
 
    /** The incoming queue of scenes ready to rasterize */
    struct lp_scene_queue *full_scenes;
 
-   /**
-    * The outgoing queue of processed scenes to return to setup module
-    *
-    * XXX: while scenes are per-context but the rasterizer is
-    * (potentially) shared, these empty scenes should be returned to
-    * the context which created them rather than retained here.
-    */
-   struct lp_scene_queue *empty_scenes;
-
    /** The scene currently being rasterized by the threads */
    struct lp_scene *curr_scene;
 
    /** A task object for each rasterization thread */
-   struct lp_rasterizer_task tasks[MAX_THREADS];
+   struct lp_rasterizer_task tasks[LP_MAX_THREADS];
 
    unsigned num_threads;
-   pipe_thread threads[MAX_THREADS];
+   thrd_t threads[LP_MAX_THREADS];
 
    /** For synchronizing the rasterization threads */
-   pipe_barrier barrier;
+   util_barrier barrier;
 };
 
 
-void lp_rast_shade_quads( struct lp_rasterizer_task *task,
-                          const struct lp_rast_shader_inputs *inputs,
-                          unsigned x, unsigned y,
-                          int32_t c1, int32_t c2, int32_t c3);
+void
+lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
+                         const struct lp_rast_shader_inputs *inputs,
+                         unsigned x, unsigned y,
+                         unsigned mask);
 
 
 /**
- * Get the pointer to the depth buffer for a block.
+ * Get the pointer to a 4x4 color block (within a 64x64 tile).
  * \param x, y location of 4x4 block in window coords
  */
-static INLINE void *
-lp_rast_depth_pointer( struct lp_rasterizer *rast,
-                       unsigned x, unsigned y )
+static inline uint8_t *
+lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
+                                unsigned buf, unsigned x, unsigned y,
+                                unsigned layer)
 {
-   void * depth;
+   unsigned px, py, pixel_offset;
+   uint8_t *color;
 
+   assert(x < task->scene->tiles_x * TILE_SIZE);
+   assert(y < task->scene->tiles_y * TILE_SIZE);
    assert((x % TILE_VECTOR_WIDTH) == 0);
    assert((y % TILE_VECTOR_HEIGHT) == 0);
+   assert(buf < task->scene->fb.nr_cbufs);
 
-   if (!rast->zsbuf.map)
-      return NULL;
+   assert(task->color_tiles[buf]);
 
-   depth = (rast->zsbuf.map +
-            rast->zsbuf.stride * y +
-            rast->zsbuf.blocksize * x * TILE_VECTOR_HEIGHT);
+   /*
+    * We don't actually benefit from having per tile cbuf/zsbuf pointers,
+    * it's just extra work - the mul/add would be exactly the same anyway.
+    * Fortunately the extra work (modulo) here is very cheap at least...
+    */
+   px = x % TILE_SIZE;
+   py = y % TILE_SIZE;
 
-   assert(lp_check_alignment(depth, 16));
+   pixel_offset = px * task->scene->cbufs[buf].format_bytes +
+                  py * task->scene->cbufs[buf].stride;
+   color = task->color_tiles[buf] + pixel_offset;
+
+   if (layer) {
+      color += layer * task->scene->cbufs[buf].layer_stride;
+   }
+
+   assert(lp_check_alignment(color, llvmpipe_get_format_alignment(task->scene->fb.cbufs[buf]->format)));
+   return color;
+}
+
+
+/**
+ * Get the pointer to a 4x4 depth block (within a 64x64 tile).
+ * \param x, y location of 4x4 block in window coords
+ */
+static inline uint8_t *
+lp_rast_get_depth_block_pointer(struct lp_rasterizer_task *task,
+                                unsigned x, unsigned y, unsigned layer)
+{
+   unsigned px, py, pixel_offset;
+   uint8_t *depth;
+
+   assert(x < task->scene->tiles_x * TILE_SIZE);
+   assert(y < task->scene->tiles_y * TILE_SIZE);
+   assert((x % TILE_VECTOR_WIDTH) == 0);
+   assert((y % TILE_VECTOR_HEIGHT) == 0);
+
+   assert(task->depth_tile);
+
+   px = x % TILE_SIZE;
+   py = y % TILE_SIZE;
+
+   pixel_offset = px * task->scene->zsbuf.format_bytes +
+                  py * task->scene->zsbuf.stride;
+   depth = task->depth_tile + pixel_offset;
+
+   if (layer) {
+      depth += layer * task->scene->zsbuf.layer_stride;
+   }
+
+   assert(lp_check_alignment(depth, llvmpipe_get_format_alignment(task->scene->fb.zsbuf->format)));
    return depth;
 }
 
@@ -170,40 +220,122 @@ lp_rast_depth_pointer( struct lp_rasterizer *rast,
  * triangle in/out tests.
  * \param x, y location of 4x4 block in window coords
  */
-static INLINE void
+static inline void
 lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
                          const struct lp_rast_shader_inputs *inputs,
                          unsigned x, unsigned y )
 {
-   struct lp_rasterizer *rast = task->rast;
-   const struct lp_rast_state *state = task->current_state;
-   struct lp_rast_tile *tile = &task->tile;
-   const unsigned ix = x % TILE_SIZE, iy = y % TILE_SIZE;
+   const struct lp_scene *scene = task->scene;
+   const struct lp_rast_state *state = task->state;
+   struct lp_fragment_shader_variant *variant = state->variant;
    uint8_t *color[PIPE_MAX_COLOR_BUFS];
-   void *depth;
-   unsigned block_offset, i;
-
-   /* offset of the containing 16x16 pixel block within the tile */
-   block_offset = (iy / 4) * (16 * 16) + (ix / 4) * 16;
+   unsigned stride[PIPE_MAX_COLOR_BUFS];
+   uint8_t *depth = NULL;
+   unsigned depth_stride = 0;
+   unsigned i;
 
    /* color buffer */
-   for (i = 0; i < rast->state.nr_cbufs; i++)
-      color[i] = tile->color[i] + 4 * block_offset;
-
-   depth = lp_rast_depth_pointer(rast, x, y);
-
-   /* run shader */
-   state->jit_function[0]( &state->jit_context,
-                           x, y,
-                           inputs->facing,
-                           inputs->a0,
-                           inputs->dadx,
-                           inputs->dady,
-                           color,
-                           depth,
-                           INT_MIN, INT_MIN, INT_MIN,
-                           NULL, NULL, NULL );
+   for (i = 0; i < scene->fb.nr_cbufs; i++) {
+      if (scene->fb.cbufs[i]) {
+         stride[i] = scene->cbufs[i].stride;
+         color[i] = lp_rast_get_color_block_pointer(task, i, x, y,
+                                                    inputs->layer);
+      }
+      else {
+         stride[i] = 0;
+         color[i] = NULL;
+      }
+   }
+
+   if (scene->zsbuf.map) {
+      depth = lp_rast_get_depth_block_pointer(task, x, y, inputs->layer);
+      depth_stride = scene->zsbuf.stride;
+   }
+
+   /*
+    * The rasterizer may produce fragments outside our
+    * allocated 4x4 blocks hence need to filter them out here.
+    */
+   if ((x % TILE_SIZE) < task->width && (y % TILE_SIZE) < task->height) {
+      /* Propagate non-interpolated raster state. */
+      task->thread_data.raster_state.viewport_index = inputs->viewport_index;
+
+      /* run shader on 4x4 block */
+      BEGIN_JIT_CALL(state, task);
+      variant->jit_function[RAST_WHOLE]( &state->jit_context,
+                                         x, y,
+                                         inputs->frontfacing,
+                                         GET_A0(inputs),
+                                         GET_DADX(inputs),
+                                         GET_DADY(inputs),
+                                         color,
+                                         depth,
+                                         0xffff,
+                                         &task->thread_data,
+                                         stride,
+                                         depth_stride);
+      END_JIT_CALL();
+   }
 }
 
+void lp_rast_triangle_1( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_2( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_3( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_4( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_5( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_6( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_7( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_8( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+
+void lp_rast_triangle_3_4(struct lp_rasterizer_task *,
+                         const union lp_rast_cmd_arg );
+
+void lp_rast_triangle_3_16( struct lp_rasterizer_task *, 
+                            const union lp_rast_cmd_arg );
+
+void lp_rast_triangle_4_16( struct lp_rasterizer_task *, 
+                            const union lp_rast_cmd_arg );
+
+
+void lp_rast_triangle_32_1( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_32_2( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_32_3( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_32_4( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_32_5( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_32_6( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_32_7( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+void lp_rast_triangle_32_8( struct lp_rasterizer_task *, 
+                         const union lp_rast_cmd_arg );
+
+void lp_rast_triangle_32_3_4(struct lp_rasterizer_task *,
+                         const union lp_rast_cmd_arg );
+
+void lp_rast_triangle_32_3_16( struct lp_rasterizer_task *, 
+                            const union lp_rast_cmd_arg );
+
+void lp_rast_triangle_32_4_16( struct lp_rasterizer_task *, 
+                            const union lp_rast_cmd_arg );
+
+void
+lp_rast_set_state(struct lp_rasterizer_task *task,
+                  const union lp_rast_cmd_arg arg);
+void
+lp_debug_bin( const struct cmd_bin *bin, int x, int y );
 
 #endif