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-rw-r--r--src/video_core/regs_rasterizer.h14
-rw-r--r--src/video_core/swrasterizer/clipper.cpp15
2 files changed, 25 insertions, 4 deletions
diff --git a/src/video_core/regs_rasterizer.h b/src/video_core/regs_rasterizer.h
index 2874fd127..4fef00d76 100644
--- a/src/video_core/regs_rasterizer.h
+++ b/src/video_core/regs_rasterizer.h
@@ -5,10 +5,10 @@
#pragma once
#include <array>
-
#include "common/bit_field.h"
#include "common/common_funcs.h"
#include "common/common_types.h"
+#include "video_core/pica_types.h"
namespace Pica {
@@ -31,7 +31,17 @@ struct RasterizerRegs {
BitField<0, 24, u32> viewport_size_y;
- INSERT_PADDING_WORDS(0x9);
+ INSERT_PADDING_WORDS(0x3);
+
+ BitField<0, 1, u32> clip_enable;
+ BitField<0, 24, u32> clip_coef[4]; // float24
+
+ Math::Vec4<float24> GetClipCoef() const {
+ return {float24::FromRaw(clip_coef[0]), float24::FromRaw(clip_coef[1]),
+ float24::FromRaw(clip_coef[2]), float24::FromRaw(clip_coef[3])};
+ }
+
+ INSERT_PADDING_WORDS(0x1);
BitField<0, 24, u32> viewport_depth_range; // float24
BitField<0, 24, u32> viewport_depth_near_plane; // float24
diff --git a/src/video_core/swrasterizer/clipper.cpp b/src/video_core/swrasterizer/clipper.cpp
index cdbc71502..cc76ba555 100644
--- a/src/video_core/swrasterizer/clipper.cpp
+++ b/src/video_core/swrasterizer/clipper.cpp
@@ -127,8 +127,7 @@ void ProcessTriangle(const OutputVertex& v0, const OutputVertex& v1, const Outpu
// Simple implementation of the Sutherland-Hodgman clipping algorithm.
// TODO: Make this less inefficient (currently lots of useless buffering overhead happens here)
- for (auto edge : clipping_edges) {
-
+ auto Clip = [&](const ClippingEdge& edge) {
std::swap(input_list, output_list);
output_list->clear();
@@ -147,12 +146,24 @@ void ProcessTriangle(const OutputVertex& v0, const OutputVertex& v1, const Outpu
}
reference_vertex = &vertex;
}
+ };
+
+ for (auto edge : clipping_edges) {
+ Clip(edge);
// Need to have at least a full triangle to continue...
if (output_list->size() < 3)
return;
}
+ if (g_state.regs.rasterizer.clip_enable) {
+ ClippingEdge custom_edge{-g_state.regs.rasterizer.GetClipCoef()};
+ Clip(custom_edge);
+
+ if (output_list->size() < 3)
+ return;
+ }
+
InitScreenCoordinates((*output_list)[0]);
InitScreenCoordinates((*output_list)[1]);