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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>
This commit is contained in:
Kenneth Graunke 2015-01-15 01:41:14 -08:00
parent bb33a31c38
commit d523fefa75
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,