From 57a46c69f1ae65902c3937bbfedc6ffa9f8ecf47 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Fri, 27 Sep 2019 16:10:45 -0400
Subject: [PATCH] Fermi2D: limit blit area to only available area
Normaly OpenGL does not care if the areas exceed the texture regions but
other backends such as Vulkan do care about the limits of this areas.
This PR crops the areas of the blit in order that they don't surpass the
limits of the textures. This should help Vulkan and faulty OpenGL
drivers
---
src/video_core/engines/fermi_2d.cpp | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/src/video_core/engines/fermi_2d.cpp b/src/video_core/engines/fermi_2d.cpp
index 7ff44f06d2..c2d4dcc09b 100644
--- a/src/video_core/engines/fermi_2d.cpp
+++ b/src/video_core/engines/fermi_2d.cpp
@@ -47,10 +47,20 @@ void Fermi2D::HandleSurfaceCopy() {
src_blit_x2 = static_cast<u32>((regs.blit_src_x >> 32) + regs.blit_dst_width);
src_blit_y2 = static_cast<u32>((regs.blit_src_y >> 32) + regs.blit_dst_height);
}
- const Common::Rectangle<u32> src_rect{src_blit_x1, src_blit_y1, src_blit_x2, src_blit_y2};
- const Common::Rectangle<u32> dst_rect{regs.blit_dst_x, regs.blit_dst_y,
- regs.blit_dst_x + regs.blit_dst_width,
- regs.blit_dst_y + regs.blit_dst_height};
+ const u32 dst_blit_x2 = regs.blit_dst_x + regs.blit_dst_width;
+ const u32 dst_blit_y2 = regs.blit_dst_x + regs.blit_dst_height;
+ const u32 excess_src_x2 = std::max<s32>(0, dst_blit_x2 - regs.dst.width);
+ const u32 excess_src_y2 = std::max<s32>(0, dst_blit_y2 - regs.dst.height);
+ const u32 excess_dst_x2 = std::max<s32>(0, src_blit_x2 - regs.src.width);
+ const u32 excess_dst_y2 = std::max<s32>(0, src_blit_y2 - regs.src.height);
+
+ const Common::Rectangle<u32> src_rect{
+ src_blit_x1, src_blit_y1, std::min<u32>(regs.src.width, src_blit_x2) - excess_src_x2,
+ std::min<u32>(regs.src.height, src_blit_y2) - excess_src_y2};
+ const Common::Rectangle<u32> dst_rect{
+ regs.blit_dst_x, regs.blit_dst_y,
+ std::min<u32>(regs.dst.width, dst_blit_x2) - excess_dst_x2,
+ std::min<u32>(regs.dst.height, dst_blit_y2) - excess_dst_y2};
Config copy_config;
copy_config.operation = regs.operation;
copy_config.filter = regs.blit_control.filter;