/************************************************************************** * * 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 #include #include #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); }