1 files changed, 302 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_vbuf.c b/src/gallium/drivers/cell/ppu/cell_vbuf.c
new file mode 100644
index 0000000000..578ddf62dc
--- /dev/null
+++ b/src/gallium/drivers/cell/ppu/cell_vbuf.c
@@ -0,0 +1,302 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 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.
+ * 
+ **************************************************************************/
+
+/**
+ * Vertex buffer code.  The draw module transforms vertices to window
+ * coords, etc. and emits the vertices into buffer supplied by this module.
+ * When a vertex buffer is full, or we flush, we'll send the vertex data
+ * to the SPUs.
+ *
+ * Authors
+ *  Brian Paul
+ */
+
+
+#include "cell_batch.h"
+#include "cell_context.h"
+#include "cell_flush.h"
+#include "cell_spu.h"
+#include "cell_vbuf.h"
+#include "draw/draw_vbuf.h"
+#include "util/u_memory.h"
+
+
+/** Allow vertex data to be inlined after RENDER command */
+#define ALLOW_INLINE_VERTS 1
+
+
+/**
+ * Subclass of vbuf_render because we need a cell_context pointer in
+ * a few places.
+ */
+struct cell_vbuf_render
+{
+   struct vbuf_render base;
+   struct cell_context *cell;
+   uint prim;            /**< PIPE_PRIM_x */
+   uint vertex_size;     /**< in bytes */
+   void *vertex_buffer;  /**< just for debug, really */
+   uint vertex_buf;      /**< in [0, CELL_NUM_BUFFERS-1] */
+};
+
+
+/** cast wrapper */
+static struct cell_vbuf_render *
+cell_vbuf_render(struct vbuf_render *vbr)
+{
+   return (struct cell_vbuf_render *) vbr;
+}
+
+
+
+static const struct vertex_info *
+cell_vbuf_get_vertex_info(struct vbuf_render *vbr)
+{
+   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
+   return &cvbr->cell->vertex_info;
+}
+
+
+static void *
+cell_vbuf_allocate_vertices(struct vbuf_render *vbr,
+                            ushort vertex_size, ushort nr_vertices)
+{
+   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
+   /*printf("Alloc verts %u * %u\n", vertex_size, nr_vertices);*/
+
+   assert(cvbr->vertex_buf == ~0);
+   cvbr->vertex_buf = cell_get_empty_buffer(cvbr->cell);
+   cvbr->vertex_buffer = cvbr->cell->buffer[cvbr->vertex_buf];
+   cvbr->vertex_size = vertex_size;
+   return cvbr->vertex_buffer;
+}
+
+
+static void
+cell_vbuf_release_vertices(struct vbuf_render *vbr, void *vertices, 
+                           unsigned vertex_size, unsigned vertices_used)
+{
+   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
+   struct cell_context *cell = cvbr->cell;
+
+   /*
+   printf("%s vertex_buf = %u  count = %u\n",
+          __FUNCTION__, cvbr->vertex_buf, vertices_used);
+   */
+
+   /* Tell SPUs they can release the vert buf */
+   if (cvbr->vertex_buf != ~0U) {
+      struct cell_command_release_verts *release
+         = (struct cell_command_release_verts *)
+         cell_batch_alloc(cell, sizeof(struct cell_command_release_verts));
+      release->opcode = CELL_CMD_RELEASE_VERTS;
+      release->vertex_buf = cvbr->vertex_buf;
+   }
+
+   cvbr->vertex_buf = ~0;
+   cell_flush_int(cell, 0x0);
+
+   assert(vertices == cvbr->vertex_buffer);
+   cvbr->vertex_buffer = NULL;
+}
+
+
+
+static boolean
+cell_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim)
+{
+   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
+   cvbr->prim = prim;
+   /*printf("cell_set_prim %u\n", prim);*/
+   return TRUE;
+}
+
+
+static void
+cell_vbuf_draw(struct vbuf_render *vbr,
+	       const ushort *indices,
+               uint nr_indices)
+{
+   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
+   struct cell_context *cell = cvbr->cell;
+   float xmin, ymin, xmax, ymax;
+   uint i;
+   uint nr_vertices = 0, min_index = ~0;
+   const void *vertices = cvbr->vertex_buffer;
+   const uint vertex_size = cvbr->vertex_size;
+
+   for (i = 0; i < nr_indices; i++) {
+      if (indices[i] > nr_vertices)
+         nr_vertices = indices[i];
+      if (indices[i] < min_index)
+         min_index = indices[i];
+   }
+   nr_vertices++;
+
+#if 0
+   /*if (min_index > 0)*/
+      printf("%s min_index = %u\n", __FUNCTION__, min_index);
+#endif
+
+#if 0
+   printf("cell_vbuf_draw() nr_indices = %u nr_verts = %u\n",
+          nr_indices, nr_vertices);
+   printf("  ");
+   for (i = 0; i < nr_indices; i += 3) {
+      printf("%u %u %u, ", indices[i+0], indices[i+1], indices[i+2]);
+   }
+   printf("\n");
+#elif 0
+   printf("cell_vbuf_draw() nr_indices = %u nr_verts = %u  indexes = [%u %u %u ...]\n",
+          nr_indices, nr_vertices,
+          indices[0], indices[1], indices[2]);
+   printf("ind space = %u, vert space = %u, space = %u\n",
+          nr_indices * 2,
+          nr_vertices * 4 * cell->vertex_info.size,
+          cell_batch_free_space(cell));
+#endif
+
+   /* compute x/y bounding box */
+   xmin = ymin = 1e50;
+   xmax = ymax = -1e50;
+   for (i = min_index; i < nr_vertices; i++) {
+      const float *v = (float *) ((ubyte *) vertices + i * vertex_size);
+      if (v[0] < xmin)
+         xmin = v[0];
+      if (v[0] > xmax)
+         xmax = v[0];
+      if (v[1] < ymin)
+         ymin = v[1];
+      if (v[1] > ymax)
+         ymax = v[1];
+   }
+#if 0
+   printf("PPU Bounds %g, %g .. %g, %g\n", xmin, ymin, xmax, ymax);
+   fflush(stdout);
+#endif
+
+   if (cvbr->prim != PIPE_PRIM_TRIANGLES)
+      return; /* only render tris for now */
+
+   /* build/insert batch RENDER command */
+   {
+      const uint index_bytes = ROUNDUP8(nr_indices * 2);
+      const uint vertex_bytes = nr_vertices * 4 * cell->vertex_info.size;
+      const uint batch_size = sizeof(struct cell_command_render) + index_bytes;
+
+      struct cell_command_render *render
+         = (struct cell_command_render *)
+         cell_batch_alloc(cell, batch_size);
+
+      render->opcode = CELL_CMD_RENDER;
+      render->prim_type = cvbr->prim;
+      render->front_winding = cell->rasterizer->front_winding;
+
+      render->num_indexes = nr_indices;
+      render->min_index = min_index;
+
+      /* append indices after render command */
+      memcpy(render + 1, indices, nr_indices * 2);
+
+      /* if there's room, append vertices after the indices, else leave
+       * vertices in the original/separate buffer.
+       */
+      render->vertex_size = 4 * cell->vertex_info.size;
+      render->num_verts = nr_vertices;
+      if (ALLOW_INLINE_VERTS &&
+          min_index == 0 &&
+          vertex_bytes + 16 <= cell_batch_free_space(cell)) {
+         /* vertex data inlined, after indices, at 16-byte boundary */
+         void *dst = cell_batch_alloc_aligned(cell, vertex_bytes, 16);
+         memcpy(dst, vertices, vertex_bytes);
+         render->inline_verts = TRUE;
+         render->vertex_buf = ~0;
+      }
+      else {
+         /* vertex data in separate buffer */
+         render->inline_verts = FALSE;
+         ASSERT(cvbr->vertex_buf >= 0);
+         render->vertex_buf = cvbr->vertex_buf;
+      }
+
+      render->xmin = xmin;
+      render->ymin = ymin;
+      render->xmax = xmax;
+      render->ymax = ymax;
+   }
+
+#if 0
+   /* helpful for debug */
+   cell_flush_int(cell, CELL_FLUSH_WAIT);
+#endif
+}
+
+
+static void
+cell_vbuf_destroy(struct vbuf_render *vbr)
+{
+   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
+   cvbr->cell->vbuf_render = NULL;
+   FREE(cvbr);
+}
+
+
+/**
+ * Initialize the post-transform vertex buffer information for the given
+ * context.
+ */
+void
+cell_init_vbuf(struct cell_context *cell)
+{
+   assert(cell->draw);
+
+   cell->vbuf_render = CALLOC_STRUCT(cell_vbuf_render);
+
+   /* The max number of indexes is what can fix into a batch buffer,
+    * minus the render and release-verts commands.
+    */
+   cell->vbuf_render->base.max_indices
+      = (CELL_BUFFER_SIZE
+         - sizeof(struct cell_command_render)
+         - sizeof(struct cell_command_release_verts))
+      / sizeof(ushort);
+   cell->vbuf_render->base.max_vertex_buffer_bytes = CELL_BUFFER_SIZE;
+
+   cell->vbuf_render->base.get_vertex_info = cell_vbuf_get_vertex_info;
+   cell->vbuf_render->base.allocate_vertices = cell_vbuf_allocate_vertices;
+   cell->vbuf_render->base.set_primitive = cell_vbuf_set_primitive;
+   cell->vbuf_render->base.draw = cell_vbuf_draw;
+   cell->vbuf_render->base.release_vertices = cell_vbuf_release_vertices;
+   cell->vbuf_render->base.destroy = cell_vbuf_destroy;
+
+   cell->vbuf_render->cell = cell;
+#if 1
+   cell->vbuf_render->vertex_buf = ~0;
+#endif
+
+   cell->vbuf = draw_vbuf_stage(cell->draw, &cell->vbuf_render->base);
+}