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Diffstat (limited to 'src/gallium/drivers/cell/spu/spu_render.c')
-rw-r--r--src/gallium/drivers/cell/spu/spu_render.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_render.c b/src/gallium/drivers/cell/spu/spu_render.c
new file mode 100644
index 0000000000..305dc98881
--- /dev/null
+++ b/src/gallium/drivers/cell/spu/spu_render.c
@@ -0,0 +1,301 @@
+/**************************************************************************
+ *
+ * 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 "cell/common.h"
+#include "util/u_memory.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;
+ if (txmax >= spu.fb.width_tiles)
+ txmax = spu.fb.width_tiles-1;
+ if (tymax >= spu.fb.height_tiles)
+ tymax = spu.fb.height_tiles-1;
+ *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;
+}
+
+
+/**
+ * Start fetching non-clear color/Z tiles from main memory
+ */
+static INLINE void
+get_cz_tiles(uint tx, uint ty)
+{
+ if (spu.read_depth) {
+ if (spu.cur_ztile_status != TILE_STATUS_CLEAR) {
+ //printf("SPU %u: getting Z tile %u, %u\n", spu.init.id, tx, ty);
+ get_tile(tx, ty, &spu.ztile, TAG_READ_TILE_Z, 1);
+ spu.cur_ztile_status = TILE_STATUS_GETTING;
+ }
+ }
+
+ if (spu.cur_ctile_status != TILE_STATUS_CLEAR) {
+ //printf("SPU %u: getting C tile %u, %u\n", spu.init.id, tx, ty);
+ get_tile(tx, ty, &spu.ctile, TAG_READ_TILE_COLOR, 0);
+ spu.cur_ctile_status = TILE_STATUS_GETTING;
+ }
+}
+
+
+/**
+ * Start putting dirty color/Z tiles back to main memory
+ */
+static INLINE void
+put_cz_tiles(uint tx, uint ty)
+{
+ if (spu.cur_ztile_status == TILE_STATUS_DIRTY) {
+ /* tile was modified and needs to be written back */
+ //printf("SPU %u: put dirty Z tile %u, %u\n", spu.init.id, tx, ty);
+ put_tile(tx, ty, &spu.ztile, TAG_WRITE_TILE_Z, 1);
+ spu.cur_ztile_status = TILE_STATUS_DEFINED;
+ }
+ else if (spu.cur_ztile_status == TILE_STATUS_GETTING) {
+ /* tile was never used */
+ spu.cur_ztile_status = TILE_STATUS_DEFINED;
+ //printf("SPU %u: put getting Z tile %u, %u\n", spu.init.id, tx, ty);
+ }
+
+ if (spu.cur_ctile_status == TILE_STATUS_DIRTY) {
+ /* tile was modified and needs to be written back */
+ //printf("SPU %u: put dirty C tile %u, %u\n", spu.init.id, tx, ty);
+ put_tile(tx, ty, &spu.ctile, TAG_WRITE_TILE_COLOR, 0);
+ spu.cur_ctile_status = TILE_STATUS_DEFINED;
+ }
+ else if (spu.cur_ctile_status == TILE_STATUS_GETTING) {
+ /* tile was never used */
+ spu.cur_ctile_status = TILE_STATUS_DEFINED;
+ //printf("SPU %u: put getting C tile %u, %u\n", spu.init.id, tx, ty);
+ }
+}
+
+
+/**
+ * Wait for 'put' of color/z tiles to complete.
+ */
+static INLINE void
+wait_put_cz_tiles(void)
+{
+ wait_on_mask(1 << TAG_WRITE_TILE_COLOR);
+ if (spu.read_depth) {
+ wait_on_mask(1 << TAG_WRITE_TILE_Z);
+ }
+}
+
+
+/**
+ * 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;
+ uint index_bytes;
+ 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);
+ ASSERT(render->prim_type == PIPE_PRIM_TRIANGLES);
+ ASSERT(render->num_indexes % 3 == 0);
+
+
+ /* indexes are right after the render command in the batch buffer */
+ indexes = (const ushort *) (render + 1);
+ index_bytes = ROUNDUP8(render->num_indexes * 2);
+ *pos_incr = index_bytes / 8 + sizeof(*render) / 8;
+
+
+ if (render->inline_verts) {
+ /* Vertices are after indexes in batch buffer at next 16-byte addr */
+ vertices = (const ubyte *) render + (*pos_incr * 8);
+ vertices = (const ubyte *) align_pointer((void *) vertices, 16);
+ ASSERT_ALIGN16(vertices);
+ *pos_incr = ((vertices + total_vertex_bytes) - (ubyte *) render) / 8;
+ }
+ 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;
+
+ spu.cur_ctile_status = spu.ctile_status[ty][tx];
+ spu.cur_ztile_status = spu.ztile_status[ty][tx];
+
+ get_cz_tiles(tx, ty);
+
+ uint drawn = 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);
+
+ drawn += tri_draw(v0, v1, v2, tx, ty);
+ }
+
+ //printf("SPU %u: drew %u of %u\n", spu.init.id, drawn, render->num_indexes/3);
+
+ /* write color/z tiles back to main framebuffer, if dirtied */
+ put_cz_tiles(tx, ty);
+
+ wait_put_cz_tiles(); /* XXX seems unnecessary... */
+
+ spu.ctile_status[ty][tx] = spu.cur_ctile_status;
+ spu.ztile_status[ty][tx] = spu.cur_ztile_status;
+ }
+
+ if (Debug)
+ printf("SPU %u: RENDER done\n",
+ spu.init.id);
+}
+
+
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