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i965: Prefer Meta over the BLT for BlitFramebuffer.

Browse source 
There's some debate about whether we should use Meta or BLORP,
but either should run circles around the BLT engine.

In particular, this means that Gen8+ will use the 3D engine for blits,
like we do on Gen6-7.

Improves performance in "copypixrate -blit -back" (from Mesa demos)
by 232.037% +/- 3.15795% (n=10) on Broadwell GT3e.

v2: Rebase on Laura's changes.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Cc: "10.5" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit d523fefa75)
This commit is contained in:
Kenneth Graunke 2015-01-15 01:41:14 -08:00 • committed by Emil Velikov
parent 3e513ea65c
commit 86aaa10ce7
1 changed files with 7 additions and 7 deletions
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14
src/mesa/drivers/dri/i965/intel_fbo.c
View file

@ -885,6 +885,13 @@ intel_blit_framebuffer(struct gl_context *ctx,
if (mask == 0x0)
return;
mask = _mesa_meta_BlitFramebuffer(ctx, readFb, drawFb,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
if (mask == 0x0)
return;
if (brw->gen >= 8 && (mask & GL_STENCIL_BUFFER_BIT)) {
brw_meta_fbo_stencil_blit(brw_context(ctx), readFb, drawFb,
srcX0, srcY0, srcX1, srcY1,
@ -902,13 +909,6 @@ intel_blit_framebuffer(struct gl_context *ctx,
if (mask == 0x0)
return;
mask = _mesa_meta_BlitFramebuffer(ctx, readFb, drawFb,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
if (mask == 0x0)
return;
_swrast_BlitFramebuffer(ctx, readFb, drawFb,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,