From b185567a03aebea36a553254e74e890e5375d370 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Thu, 29 Jul 2021 02:17:53 -0300 Subject: vk_rasterizer: Flip viewport on Y_NEGATE Matches OpenGL's behavior. I don't believe this register flips geometry, but we have to try to match behavior on both backends. --- src/video_core/renderer_vulkan/vk_rasterizer.cpp | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'src') diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp index c7a07fdd8..23cef2996 100644 --- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp +++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp @@ -61,11 +61,16 @@ struct DrawParams { VkViewport GetViewportState(const Device& device, const Maxwell& regs, size_t index) { const auto& src = regs.viewport_transform[index]; const float width = src.scale_x * 2.0f; - const float height = src.scale_y * 2.0f; + float y = src.translate_y - src.scale_y; + float height = src.scale_y * 2.0f; + if (regs.screen_y_control.y_negate) { + y += height; + height = -height; + } const float reduce_z = regs.depth_mode == Maxwell::DepthMode::MinusOneToOne ? 1.0f : 0.0f; VkViewport viewport{ .x = src.translate_x - src.scale_x, - .y = src.translate_y - src.scale_y, + .y = y, .width = width != 0.0f ? width : 1.0f, .height = height != 0.0f ? height : 1.0f, .minDepth = src.translate_z - src.scale_z * reduce_z, -- cgit v1.2.3