D3D11: Force level zero render target in FL 9.3.

Since 9.3 doesn't support non-zero level render targets, we should always be getting the level zero render target. Previously the code would never try creating a render target when level zero mode was not enabled, but this can break if we refactor the code. Fixes a bug in a future patch which creates the storage as a render target instead of as a non-renderable texture first. BUG=angleproject:2107 Change-Id: Ib2732a35e586bc4956d07783325429e8edeb0c66 Reviewed-on: https://chromium-review.googlesource.com/614120Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

D3D11: Force level zero render target in FL 9.3.
200e2d23 · Jamie Madill · Commit Bot · e59000c3 · 200e2d23
Commit 200e2d23 authored Aug 14, 2017 by Jamie Madill Committed by Commit Bot Aug 16, 2017
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TextureStorage11.cpp src/libANGLE/renderer/d3d/d3d11/TextureStorage11.cpp +12 -0

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--- a/src/libANGLE/renderer/d3d/d3d11/TextureStorage11.cpp
+++ b/src/libANGLE/renderer/d3d/d3d11/TextureStorage11.cpp
@@ -1045,6 +1045,12 @@ gl::Error TextureStorage11_2D::getRenderTarget(const gl::Context *context,
        return gl::NoError();
    }
+    if (mRenderer->getWorkarounds().zeroMaxLodWorkaround)
+    {
+        ASSERT(index.mipIndex == 0);
+        useLevelZeroWorkaroundTexture(true);
+    }
    const TextureHelper11 *texture = nullptr;
    ANGLE_TRY(getResource(context, &texture));
@@ -1986,6 +1992,12 @@ gl::Error TextureStorage11_Cube::getRenderTarget(const gl::Context *context,
    if (!mRenderTarget[faceIndex][level])
    {
+        if (mRenderer->getWorkarounds().zeroMaxLodWorkaround)
+        {
+            ASSERT(index.mipIndex == 0);
+            useLevelZeroWorkaroundTexture(true);
+        }
        const TextureHelper11 *texture = nullptr;
        ANGLE_TRY(getResource(context, &texture));