Cell: move cmd_render() into new spu_render.c file

1 files changed, 240 insertions, 0 deletions

diff --git a/src/mesa/pipe/cell/spu/spu_render.c b/src/mesa/pipe/cell/spu/spu_render.c
new file mode 100644
index 0000000000..21a286a23d
--- /dev/null
+++ b/src/mesa/pipe/cell/spu/spu_render.c
@@ -0,0 +1,240 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 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.
+ * 
+ **************************************************************************/
+
+
+#include <stdio.h>
+#include <libmisc.h>
+#include <spu_mfcio.h>
+
+#include "spu_main.h"
+#include "spu_render.h"
+#include "spu_tri.h"
+#include "spu_tile.h"
+#include "pipe/cell/common.h"
+
+
+
+/**
+ * Given a rendering command's bounding box (in pixels) compute the
+ * location of the corresponding screen tile bounding box.
+ */
+static INLINE void
+tile_bounding_box(const struct cell_command_render *render,
+                  uint *txmin, uint *tymin,
+                  uint *box_num_tiles, uint *box_width_tiles)
+{
+#if 0
+   /* Debug: full-window bounding box */
+   uint txmax = spu.fb.width_tiles - 1;
+   uint tymax = spu.fb.height_tiles - 1;
+   *txmin = 0;
+   *tymin = 0;
+   *box_num_tiles = spu.fb.width_tiles * spu.fb.height_tiles;
+   *box_width_tiles = spu.fb.width_tiles;
+   (void) render;
+   (void) txmax;
+   (void) tymax;
+#else
+   uint txmax, tymax, box_height_tiles;
+
+   *txmin = (uint) render->xmin / TILE_SIZE;
+   *tymin = (uint) render->ymin / TILE_SIZE;
+   txmax = (uint) render->xmax / TILE_SIZE;
+   tymax = (uint) render->ymax / TILE_SIZE;
+   *box_width_tiles = txmax - *txmin + 1;
+   box_height_tiles = tymax - *tymin + 1;
+   *box_num_tiles = *box_width_tiles * box_height_tiles;
+#endif
+#if 0
+   printf("SPU %u: bounds: %g, %g  ...  %g, %g\n", spu.init.id,
+          render->xmin, render->ymin, render->xmax, render->ymax);
+   printf("SPU %u: tiles:  %u, %u .. %u, %u\n",
+           spu.init.id, *txmin, *tymin, txmax, tymax);
+   ASSERT(render->xmin <= render->xmax);
+   ASSERT(render->ymin <= render->ymax);
+#endif
+}
+
+
+/** Check if the tile at (tx,ty) belongs to this SPU */
+static INLINE boolean
+my_tile(uint tx, uint ty)
+{
+   return (spu.fb.width_tiles * ty + tx) % spu.init.num_spus == spu.init.id;
+}
+
+
+/**
+ * Render primitives
+ * \param pos_incr  returns value indicating how may words to skip after
+ *                  this command in the batch buffer
+ */
+void
+cmd_render(const struct cell_command_render *render, uint *pos_incr)
+{
+   /* we'll DMA into these buffers */
+   ubyte vertex_data[CELL_BUFFER_SIZE] ALIGN16_ATTRIB;
+   const uint vertex_size = render->vertex_size; /* in bytes */
+   /*const*/ uint total_vertex_bytes = render->num_verts * vertex_size;
+   const ubyte *vertices;
+   const ushort *indexes;
+   uint i, j;
+
+
+   if (Debug) {
+      printf("SPU %u: RENDER prim %u, num_vert=%u  num_ind=%u  "
+             "inline_vert=%u\n",
+             spu.init.id,
+             render->prim_type,
+             render->num_verts,
+             render->num_indexes,
+             render->inline_verts);
+
+      /*
+      printf("       bound: %g, %g .. %g, %g\n",
+             render->xmin, render->ymin, render->xmax, render->ymax);
+      */
+   }
+
+   ASSERT(sizeof(*render) % 4 == 0);
+   ASSERT(total_vertex_bytes % 16 == 0);
+
+   /* indexes are right after the render command in the batch buffer */
+   indexes = (const ushort *) (render + 1);
+   *pos_incr = (render->num_indexes * 2 + 3) / 4;
+
+
+   if (render->inline_verts) {
+      /* Vertices are right after indexes in batch buffer */
+      vertices = (const ubyte *) (render + 1) + *pos_incr * 4;
+      *pos_incr = *pos_incr + total_vertex_bytes / 4;
+   }
+   else {
+      /* Begin DMA fetch of vertex buffer */
+      ubyte *src = spu.init.buffers[render->vertex_buf];
+      ubyte *dest = vertex_data;
+
+      /* skip vertex data we won't use */
+#if 01
+      src += render->min_index * vertex_size;
+      dest += render->min_index * vertex_size;
+      total_vertex_bytes -= render->min_index * vertex_size;
+#endif
+      ASSERT(total_vertex_bytes % 16 == 0);
+      ASSERT_ALIGN16(dest);
+      ASSERT_ALIGN16(src);
+
+      mfc_get(dest,   /* in vertex_data[] array */
+              (unsigned int) src,  /* src in main memory */
+              total_vertex_bytes,  /* size */
+              TAG_VERTEX_BUFFER,
+              0, /* tid */
+              0  /* rid */);
+
+      vertices = vertex_data;
+
+      wait_on_mask(1 << TAG_VERTEX_BUFFER);
+   }
+
+
+   /**
+    ** find tiles which intersect the prim bounding box
+    **/
+   uint txmin, tymin, box_width_tiles, box_num_tiles;
+   tile_bounding_box(render, &txmin, &tymin,
+                     &box_num_tiles, &box_width_tiles);
+
+
+   /* make sure any pending clears have completed */
+   wait_on_mask(1 << TAG_SURFACE_CLEAR); /* XXX temporary */
+
+
+   /**
+    ** loop over tiles, rendering tris
+    **/
+   for (i = 0; i < box_num_tiles; i++) {
+      const uint tx = txmin + i % box_width_tiles;
+      const uint ty = tymin + i / box_width_tiles;
+
+      ASSERT(tx < spu.fb.width_tiles);
+      ASSERT(ty < spu.fb.height_tiles);
+
+      if (!my_tile(tx, ty))
+         continue;
+
+      /* Start fetching color/z tiles.  We'll wait for completion when
+       * we need read/write to them later in triangle rasterization.
+       */
+      if (spu.depth_stencil.depth.enabled) {
+         if (tile_status_z[ty][tx] != TILE_STATUS_CLEAR) {
+            get_tile(tx, ty, &ztile, TAG_READ_TILE_Z, 1);
+         }
+      }
+
+      if (tile_status[ty][tx] != TILE_STATUS_CLEAR) {
+         get_tile(tx, ty, &ctile, TAG_READ_TILE_COLOR, 0);
+      }
+
+      ASSERT(render->prim_type == PIPE_PRIM_TRIANGLES);
+      ASSERT(render->num_indexes % 3 == 0);
+
+      /* loop over tris */
+      for (j = 0; j < render->num_indexes; j += 3) {
+         const float *v0, *v1, *v2;
+
+         v0 = (const float *) (vertices + indexes[j+0] * vertex_size);
+         v1 = (const float *) (vertices + indexes[j+1] * vertex_size);
+         v2 = (const float *) (vertices + indexes[j+2] * vertex_size);
+
+         tri_draw(v0, v1, v2, tx, ty);
+      }
+
+      /* write color/z tiles back to main framebuffer, if dirtied */
+      if (tile_status[ty][tx] == TILE_STATUS_DIRTY) {
+         put_tile(tx, ty, &ctile, TAG_WRITE_TILE_COLOR, 0);
+         tile_status[ty][tx] = TILE_STATUS_DEFINED;
+      }
+      if (spu.depth_stencil.depth.enabled) {
+         if (tile_status_z[ty][tx] == TILE_STATUS_DIRTY) {
+            put_tile(tx, ty, &ztile, TAG_WRITE_TILE_Z, 1);
+            tile_status_z[ty][tx] = TILE_STATUS_DEFINED;
+         }
+      }
+
+      /* XXX move these... */
+      wait_on_mask(1 << TAG_WRITE_TILE_COLOR);
+      if (spu.depth_stencil.depth.enabled) {
+         wait_on_mask(1 << TAG_WRITE_TILE_Z);
+      }
+   }
+
+   if (Debug)
+      printf("SPU %u: RENDER done\n",
+             spu.init.id);
+}
+
+