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radv: fix scissor computation when using half-pixel viewport offset

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'scale[i]' can be non-integer.

Original patch by Philip Rebohle.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106074
Fixes: 0f3de89a56 ("radv: Use the guard band.")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Niuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset
2018-04-17 22:07:26 +02:00
parent 608d70bc02
commit 893e19efb7
1 changed files with 4 additions and 4 deletions
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8
src/amd/vulkan/si_cmd_buffer.c
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@@ -663,10 +663,10 @@ static VkRect2D si_scissor_from_viewport(const VkViewport *viewport)
get_viewport_xform(viewport, scale, translate); get_viewport_xform(viewport, scale, translate);
rect.offset.x = translate[0] - abs(scale[0]); rect.offset.x = translate[0] - fabs(scale[0]);
rect.offset.y = translate[1] - abs(scale[1]); rect.offset.y = translate[1] - fabs(scale[1]);
rect.extent.width = ceilf(translate[0] + abs(scale[0])) - rect.offset.x; rect.extent.width = ceilf(translate[0] + fabs(scale[0])) - rect.offset.x;
rect.extent.height = ceilf(translate[1] + abs(scale[1])) - rect.offset.y; rect.extent.height = ceilf(translate[1] + fabs(scale[1])) - rect.offset.y;
return rect; return rect;
} }