diff options
author | Brian <brian.paul@tungstengraphics.com> | 2007-10-25 19:27:29 -0600 |
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committer | Brian <brian.paul@tungstengraphics.com> | 2007-10-25 20:35:23 -0600 |
commit | f684120417c6b3ca9e7486ffeb24fe88e428834d (patch) | |
tree | c4e9a773294e968866e601a45032f6312dab7b79 /src/mesa/drivers/dri/intel_winsys | |
parent | 616112ea2e0eefea356be228bff8754ee955d8b3 (diff) |
Move region_alloc() and region_release() to pipe_winsys.
This allows regions to be allocated w/out a rendering context.
Diffstat (limited to 'src/mesa/drivers/dri/intel_winsys')
-rw-r--r-- | src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c b/src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c index f6eb050152..c481495309 100644 --- a/src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c +++ b/src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c @@ -120,6 +120,64 @@ static void intel_i915_batch_flush( struct i915_winsys *sws ) +static struct pipe_region * +intel_i915_region_alloc(struct pipe_winsys *winsys, + unsigned cpp, unsigned width, + unsigned height, unsigned flags) +{ + struct pipe_region *region = calloc(sizeof(*region), 1); + const unsigned alignment = 64; + + /* Choose a pitch to match hardware requirements - requires 64 byte + * alignment of render targets. + * + * XXX: is this ok for textures?? + * clearly want to be able to render to textures under some + * circumstances, but maybe not always a requirement. + */ + unsigned pitch; + + /* XXX is the pitch different for textures vs. drawables? */ + if (flags & PIPE_SURFACE_FLAG_TEXTURE) /* or PIPE_SURFACE_FLAG_RENDER? */ + pitch = ((cpp * width + 63) & ~63) / cpp; + else + pitch = ((cpp * width + 63) & ~63) / cpp; + + region->cpp = cpp; + region->pitch = pitch; + region->height = height; /* needed? */ + region->refcount = 1; + + region->buffer = winsys->buffer_create( winsys, alignment ); + + winsys->buffer_data( winsys, + region->buffer, + pitch * cpp * height, + NULL ); + + return region; +} + +static void +intel_i915_region_release(struct pipe_winsys *winsys, + struct pipe_region **region) +{ + if (!*region) + return; + + assert((*region)->refcount > 0); + (*region)->refcount--; + + if ((*region)->refcount == 0) { + assert((*region)->map_refcount == 0); + + winsys->buffer_reference( winsys, + &((*region)->buffer), NULL ); + free(*region); + } + *region = NULL; +} + struct pipe_context * intel_create_i915simple( struct intel_context *intel ) @@ -135,6 +193,9 @@ intel_create_i915simple( struct intel_context *intel ) iws->winsys.batch_flush = intel_i915_batch_flush; iws->intel = intel; + iws->winsys.region_alloc = intel_i915_region_alloc; + iws->winsys.region_release = intel_i915_region_release; + /* Create the i915simple context: */ return i915_create( intel_create_pipe_winsys(intel), |