[Mesa-dev] [PATCH 4/4] i965: Refactor Gen4-6 SURFACE_STATE setup for buffer surfaces.
Paul Berry
stereotype441 at gmail.com
Mon Sep 16 17:24:50 PDT 2013
On 13 September 2013 23:10, Kenneth Graunke <kenneth at whitecape.org> wrote:
> This was an embarassingly large amount of copy and pasted code,
> and it wasn't particularly simple code either. By factoring it out
> into a helper function, we consolidate the complexity.
>
I believe the off-by-one error with buffer_size that I mentioned in patch 1
applies to this patch too.
With that fixed, the patch is:
Reviewed-by: Paul Berry <stereotype441 at gmail.com>
>
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
> ---
> src/mesa/drivers/dri/i965/brw_wm_surface_state.c | 98
> +++++++++---------------
> 1 file changed, 37 insertions(+), 61 deletions(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
> b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
> index 8d87786..bbe7803 100644
> --- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
> +++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
> @@ -190,6 +190,36 @@ brw_get_texture_swizzle(const struct gl_context *ctx,
> swizzles[GET_SWZ(t->_Swizzle, 3)]);
> }
>
> +static void
> +gen4_emit_buffer_surface_state(struct brw_context *brw,
> + uint32_t *out_offset,
> + drm_intel_bo *bo,
> + unsigned buffer_offset,
> + unsigned surface_format,
> + unsigned buffer_size,
> + unsigned pitch)
> +{
> + uint32_t *surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE,
> + 6 * 4, 32, out_offset);
> + memset(surf, 0, 6 * 4);
> +
> + surf[0] = BRW_SURFACE_BUFFER << BRW_SURFACE_TYPE_SHIFT |
> + surface_format << BRW_SURFACE_FORMAT_SHIFT |
> + (brw->gen >= 6 ? BRW_SURFACE_RC_READ_WRITE : 0);
> + surf[1] = bo->offset + buffer_offset; /* reloc */
> + surf[2] = (buffer_size & 0x7f) << BRW_SURFACE_WIDTH_SHIFT |
> + ((buffer_size >> 7) & 0x1fff) << BRW_SURFACE_HEIGHT_SHIFT;
> + surf[3] = ((buffer_size >> 20) & 0x7f) << BRW_SURFACE_DEPTH_SHIFT |
> + (pitch - 1) << BRW_SURFACE_PITCH_SHIFT;
> +
> + /* Emit relocation to surface contents. The 965 PRM, Volume 4, section
> + * 5.1.2 "Data Cache" says: "the data cache does not exist as a
> separate
> + * physical cache. It is mapped in hardware to the sampler cache."
> + */
> + drm_intel_bo_emit_reloc(brw->batch.bo, *out_offset + 4,
> + bo, buffer_offset,
> + I915_GEM_DOMAIN_SAMPLER, 0);
> +}
>
> static void
> brw_update_buffer_texture_surface(struct gl_context *ctx,
> @@ -198,49 +228,22 @@ brw_update_buffer_texture_surface(struct gl_context
> *ctx,
> {
> struct brw_context *brw = brw_context(ctx);
> struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
> - uint32_t *surf;
> struct intel_buffer_object *intel_obj =
> intel_buffer_object(tObj->BufferObject);
> drm_intel_bo *bo = intel_obj ? intel_obj->buffer : NULL;
> gl_format format = tObj->_BufferObjectFormat;
> uint32_t brw_format = brw_format_for_mesa_format(format);
> int texel_size = _mesa_get_format_bytes(format);
> + int w = intel_obj ? intel_obj->Base.Size / texel_size : 0;
>
> if (brw_format == 0 && format != MESA_FORMAT_RGBA_FLOAT32) {
> _mesa_problem(NULL, "bad format %s for texture buffer\n",
> _mesa_get_format_name(format));
> }
>
> - surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE,
> - 6 * 4, 32, surf_offset);
> -
> - surf[0] = (BRW_SURFACE_BUFFER << BRW_SURFACE_TYPE_SHIFT |
> - (brw_format_for_mesa_format(format) <<
> BRW_SURFACE_FORMAT_SHIFT));
> -
> - if (brw->gen >= 6)
> - surf[0] |= BRW_SURFACE_RC_READ_WRITE;
> -
> - if (bo) {
> - surf[1] = bo->offset; /* reloc */
> -
> - /* Emit relocation to surface contents. */
> - drm_intel_bo_emit_reloc(brw->batch.bo,
> - *surf_offset + 4,
> - bo, 0, I915_GEM_DOMAIN_SAMPLER, 0);
> -
> - int w = intel_obj->Base.Size / texel_size;
> - surf[2] = ((w & 0x7f) << BRW_SURFACE_WIDTH_SHIFT |
> - ((w >> 7) & 0x1fff) << BRW_SURFACE_HEIGHT_SHIFT);
> - surf[3] = (((w >> 20) & 0x7f) << BRW_SURFACE_DEPTH_SHIFT |
> - (texel_size - 1) << BRW_SURFACE_PITCH_SHIFT);
> - } else {
> - surf[1] = 0;
> - surf[2] = 0;
> - surf[3] = 0;
> - }
> -
> - surf[4] = 0;
> - surf[5] = 0;
> + gen4_emit_buffer_surface_state(brw, surf_offset, bo, 0,
> + brw_format,
> + w, texel_size);
> }
>
> static void
> @@ -311,37 +314,10 @@ brw_create_constant_surface(struct brw_context *brw,
> {
> uint32_t stride = dword_pitch ? 4 : 16;
> uint32_t elements = ALIGN(size, stride) / stride;
> - const GLint w = elements - 1;
> - uint32_t *surf;
> -
> - surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE,
> - 6 * 4, 32, out_offset);
> -
> - surf[0] = (BRW_SURFACE_BUFFER << BRW_SURFACE_TYPE_SHIFT |
> - BRW_SURFACEFORMAT_R32G32B32A32_FLOAT <<
> BRW_SURFACE_FORMAT_SHIFT);
> -
> - if (brw->gen >= 6)
> - surf[0] |= BRW_SURFACE_RC_READ_WRITE;
> -
> - surf[1] = bo->offset + offset; /* reloc */
> -
> - surf[2] = ((w & 0x7f) << BRW_SURFACE_WIDTH_SHIFT |
> - ((w >> 7) & 0x1fff) << BRW_SURFACE_HEIGHT_SHIFT);
> -
> - surf[3] = (((w >> 20) & 0x7f) << BRW_SURFACE_DEPTH_SHIFT |
> - (stride - 1) << BRW_SURFACE_PITCH_SHIFT);
>
> - surf[4] = 0;
> - surf[5] = 0;
> -
> - /* Emit relocation to surface contents. The 965 PRM, Volume 4, section
> - * 5.1.2 "Data Cache" says: "the data cache does not exist as a
> separate
> - * physical cache. It is mapped in hardware to the sampler cache."
> - */
> - drm_intel_bo_emit_reloc(brw->batch.bo,
> - *out_offset + 4,
> - bo, offset,
> - I915_GEM_DOMAIN_SAMPLER, 0);
> + gen4_emit_buffer_surface_state(brw, out_offset, bo, offset,
> + BRW_SURFACEFORMAT_R32G32B32A32_FLOAT,
> + elements - 1, stride);
> }
>
> /**
> --
> 1.8.3.4
>
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev
>
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