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llvmpipe: implement lp_rast_load_zstencil

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Load zbuffer contents for binned scenes that don't start with a clear
and which have a bound zbuffer.
This commit is contained in:
Keith Whitwell 2010-01-13 16:52:17 +00:00
parent 0bb5c3060f
commit 95ee14f147
1 changed files with 34 additions and 2 deletions
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36
src/gallium/drivers/llvmpipe/lp_rast.c
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@ -269,6 +269,23 @@ void lp_rast_load_color( struct lp_rasterizer *rast,
}
static void
lp_tile_read_z32(uint32_t *tile,
const uint8_t *map,
unsigned map_stride,
unsigned x0, unsigned y0, unsigned w, unsigned h)
{
unsigned x, y;
const uint8_t *map_row = map + y0*map_stride;
for (y = 0; y < h; ++y) {
const uint32_t *map_pixel = (uint32_t *)(map_row + x0*4);
for (x = 0; x < w; ++x) {
*tile++ = *map_pixel++;
}
map_row += map_stride;
}
}
/**
* Load tile z/stencil from the framebuffer surface.
* This is a bin command called during bin processing.
@ -277,9 +294,24 @@ void lp_rast_load_zstencil( struct lp_rasterizer *rast,
unsigned thread_index,
const union lp_rast_cmd_arg arg )
{
LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__);
const unsigned x = rast->tasks[thread_index].x;
const unsigned y = rast->tasks[thread_index].y;
unsigned w = TILE_SIZE;
unsigned h = TILE_SIZE;
/* call u_tile func to load depth (and stencil?) from surface */
if (x + w > rast->state.fb.width)
w -= x + w - rast->state.fb.width;
if (y + h > rast->state.fb.height)
h -= y + h - rast->state.fb.height;
LP_DBG(DEBUG_RAST, "%s %d,%d %dx%d\n", __FUNCTION__, x, y, w, h);
assert(rast->zsbuf_transfer->texture->format == PIPE_FORMAT_Z32_UNORM);
lp_tile_read_z32(rast->tasks[thread_index].tile.depth,
rast->zsbuf_map,
rast->zsbuf_transfer->stride,
x, y, w, h);
}