vk_rasterizer: flip scissor y on lower left origin mode (#13122)

3 files changed, 51 insertions, 17 deletions

diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
index 84955bdc8..8ba50a834 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
@@ -125,11 +125,23 @@ VkRect2D GetScissorState(const Maxwell& regs, size_t index, u32 up_scale = 1, u3
         return value < 0 ? std::min<s32>(converted_value - acumm, -1)
                          : std::max<s32>(converted_value + acumm, 1);
     };
+
+    const bool lower_left = regs.window_origin.mode != Maxwell::WindowOrigin::Mode::UpperLeft;
+    const s32 clip_height = regs.surface_clip.height;
+
+    // Flip coordinates if lower left
+    s32 min_y = lower_left ? (clip_height - src.max_y) : src.min_y.Value();
+    s32 max_y = lower_left ? (clip_height - src.min_y) : src.max_y.Value();
+
+    // Bound to render area
+    min_y = std::max(min_y, 0);
+    max_y = std::max(max_y, 0);
+
     if (src.enable) {
-        scissor.offset.x = scale_up(static_cast<s32>(src.min_x));
-        scissor.offset.y = scale_up(static_cast<s32>(src.min_y));
+        scissor.offset.x = scale_up(src.min_x);
+        scissor.offset.y = scale_up(min_y);
         scissor.extent.width = scale_up(src.max_x - src.min_x);
-        scissor.extent.height = scale_up(src.max_y - src.min_y);
+        scissor.extent.height = scale_up(max_y - min_y);
     } else {
         scissor.offset.x = 0;
         scissor.offset.y = 0;
@@ -308,17 +320,33 @@ void RasterizerVulkan::DrawTexture() {
     const auto& draw_texture_state = maxwell3d->draw_manager->GetDrawTextureState();
     const auto& sampler = texture_cache.GetGraphicsSampler(draw_texture_state.src_sampler);
     const auto& texture = texture_cache.GetImageView(draw_texture_state.src_texture);
-    Region2D dst_region = {Offset2D{.x = static_cast<s32>(draw_texture_state.dst_x0),
-                                    .y = static_cast<s32>(draw_texture_state.dst_y0)},
-                           Offset2D{.x = static_cast<s32>(draw_texture_state.dst_x1),
-                                    .y = static_cast<s32>(draw_texture_state.dst_y1)}};
-    Region2D src_region = {Offset2D{.x = static_cast<s32>(draw_texture_state.src_x0),
-                                    .y = static_cast<s32>(draw_texture_state.src_y0)},
-                           Offset2D{.x = static_cast<s32>(draw_texture_state.src_x1),
-                                    .y = static_cast<s32>(draw_texture_state.src_y1)}};
-    blit_image.BlitColor(texture_cache.GetFramebuffer(), texture.RenderTarget(),
-                         texture.ImageHandle(), sampler->Handle(), dst_region, src_region,
-                         texture.size);
+    const auto* framebuffer = texture_cache.GetFramebuffer();
+
+    const bool src_rescaling = texture_cache.IsRescaling() && texture.IsRescaled();
+    const bool dst_rescaling = texture_cache.IsRescaling() && framebuffer->IsRescaled();
+
+    const auto ScaleSrc = [&](auto dim_f) -> s32 {
+        auto dim = static_cast<s32>(dim_f);
+        return src_rescaling ? Settings::values.resolution_info.ScaleUp(dim) : dim;
+    };
+
+    const auto ScaleDst = [&](auto dim_f) -> s32 {
+        auto dim = static_cast<s32>(dim_f);
+        return dst_rescaling ? Settings::values.resolution_info.ScaleUp(dim) : dim;
+    };
+
+    Region2D dst_region = {Offset2D{.x = ScaleDst(draw_texture_state.dst_x0),
+                                    .y = ScaleDst(draw_texture_state.dst_y0)},
+                           Offset2D{.x = ScaleDst(draw_texture_state.dst_x1),
+                                    .y = ScaleDst(draw_texture_state.dst_y1)}};
+    Region2D src_region = {Offset2D{.x = ScaleSrc(draw_texture_state.src_x0),
+                                    .y = ScaleSrc(draw_texture_state.src_y0)},
+                           Offset2D{.x = ScaleSrc(draw_texture_state.src_x1),
+                                    .y = ScaleSrc(draw_texture_state.src_y1)}};
+    Extent3D src_size = {static_cast<u32>(ScaleSrc(texture.size.width)),
+                         static_cast<u32>(ScaleSrc(texture.size.height)), texture.size.depth};
+    blit_image.BlitColor(framebuffer, texture.RenderTarget(), texture.ImageHandle(),
+                         sampler->Handle(), dst_region, src_region, src_size);
 }
 
 void RasterizerVulkan::Clear(u32 layer_count) {
diff --git a/src/video_core/renderer_vulkan/vk_texture_cache.cpp b/src/video_core/renderer_vulkan/vk_texture_cache.cpp
index 832b5e2b1..6d4deb0eb 100644
--- a/src/video_core/renderer_vulkan/vk_texture_cache.cpp
+++ b/src/video_core/renderer_vulkan/vk_texture_cache.cpp
@@ -1962,21 +1962,22 @@ Framebuffer::Framebuffer(TextureCacheRuntime& runtime, std::span<ImageView*, NUM
 }
 
 Framebuffer::Framebuffer(TextureCacheRuntime& runtime, ImageView* color_buffer,
-                         ImageView* depth_buffer, VkExtent2D extent, bool is_rescaled)
+                         ImageView* depth_buffer, VkExtent2D extent, bool is_rescaled_)
     : render_area{extent} {
     std::array<ImageView*, NUM_RT> color_buffers{color_buffer};
-    CreateFramebuffer(runtime, color_buffers, depth_buffer, is_rescaled);
+    CreateFramebuffer(runtime, color_buffers, depth_buffer, is_rescaled_);
 }
 
 Framebuffer::~Framebuffer() = default;
 
 void Framebuffer::CreateFramebuffer(TextureCacheRuntime& runtime,
                                     std::span<ImageView*, NUM_RT> color_buffers,
-                                    ImageView* depth_buffer, bool is_rescaled) {
+                                    ImageView* depth_buffer, bool is_rescaled_) {
     boost::container::small_vector<VkImageView, NUM_RT + 1> attachments;
     RenderPassKey renderpass_key{};
     s32 num_layers = 1;
 
+    is_rescaled = is_rescaled_;
     const auto& resolution = runtime.resolution;
 
     u32 width = std::numeric_limits<u32>::max();
diff --git a/src/video_core/renderer_vulkan/vk_texture_cache.h b/src/video_core/renderer_vulkan/vk_texture_cache.h
index aaeb5ef93..8501ec384 100644
--- a/src/video_core/renderer_vulkan/vk_texture_cache.h
+++ b/src/video_core/renderer_vulkan/vk_texture_cache.h
@@ -361,6 +361,10 @@ public:
         return has_stencil;
     }
 
+    [[nodiscard]] bool IsRescaled() const noexcept {
+        return is_rescaled;
+    }
+
 private:
     vk::Framebuffer framebuffer;
     VkRenderPass renderpass{};
@@ -373,6 +377,7 @@ private:
     std::array<size_t, NUM_RT> rt_map{};
     bool has_depth{};
     bool has_stencil{};
+    bool is_rescaled{};
 };
 
 struct TextureCacheParams {