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mesa: avoid redundant viewport changes in meta code

This commit is contained in:
Brian Paul 2009-08-27 14:47:24 -06:00
parent c28f253ac2
commit 0243f79eac
1 changed files with 18 additions and 3 deletions
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21
src/mesa/drivers/common/meta.c
View File

@ -432,13 +432,23 @@ _mesa_meta_begin(GLcontext *ctx, GLbitfield state)
}
if (state & META_VIEWPORT) {
/* save viewport state */
save->ViewportX = ctx->Viewport.X;
save->ViewportY = ctx->Viewport.Y;
save->ViewportW = ctx->Viewport.Width;
save->ViewportH = ctx->Viewport.Height;
_mesa_Viewport(0, 0, ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);
/* set viewport to match window size */
if (ctx->Viewport.X != 0 ||
ctx->Viewport.Y != 0 ||
ctx->Viewport.Width != ctx->DrawBuffer->Width ||
ctx->Viewport.Height != ctx->DrawBuffer->Height) {
_mesa_set_viewport(ctx, 0, 0,
ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);
}
/* save depth range state */
save->DepthNear = ctx->Viewport.Near;
save->DepthFar = ctx->Viewport.Far;
/* set depth range to default */
_mesa_DepthRange(0.0, 1.0);
}
@ -642,8 +652,13 @@ _mesa_meta_end(GLcontext *ctx)
}
if (state & META_VIEWPORT) {
_mesa_Viewport(save->ViewportX, save->ViewportY,
save->ViewportW, save->ViewportH);
if (save->ViewportX != ctx->Viewport.X ||
save->ViewportY != ctx->Viewport.Y ||
save->ViewportW != ctx->Viewport.Width ||
save->ViewportH != ctx->Viewport.Height) {
_mesa_set_viewport(ctx, save->ViewportX, save->ViewportY,
save->ViewportW, save->ViewportH);
}
_mesa_DepthRange(save->DepthNear, save->DepthFar);
}