Remove references to PICA and rasterizers in video_core

1 files changed, 0 insertions, 197 deletions

diff --git a/src/video_core/swrasterizer/clipper.cpp b/src/video_core/swrasterizer/clipper.cpp
deleted file mode 100644
index c1ed48398..000000000
--- a/src/video_core/swrasterizer/clipper.cpp
+++ /dev/null
@@ -1,197 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <algorithm>
-#include <array>
-#include <cstddef>
-#include <boost/container/static_vector.hpp>
-#include <boost/container/vector.hpp>
-#include "common/bit_field.h"
-#include "common/common_types.h"
-#include "common/logging/log.h"
-#include "common/vector_math.h"
-#include "video_core/pica_state.h"
-#include "video_core/pica_types.h"
-#include "video_core/shader/shader.h"
-#include "video_core/swrasterizer/clipper.h"
-#include "video_core/swrasterizer/rasterizer.h"
-
-using Pica::Rasterizer::Vertex;
-
-namespace Pica {
-
-namespace Clipper {
-
-struct ClippingEdge {
-public:
-    ClippingEdge(Math::Vec4<float24> coeffs, Math::Vec4<float24> bias = Math::Vec4<float24>(
-                                                 float24::FromFloat32(0), float24::FromFloat32(0),
-                                                 float24::FromFloat32(0), float24::FromFloat32(0)))
-        : coeffs(coeffs), bias(bias) {}
-
-    bool IsInside(const Vertex& vertex) const {
-        return Math::Dot(vertex.pos + bias, coeffs) >= float24::FromFloat32(0);
-    }
-
-    bool IsOutSide(const Vertex& vertex) const {
-        return !IsInside(vertex);
-    }
-
-    Vertex GetIntersection(const Vertex& v0, const Vertex& v1) const {
-        float24 dp = Math::Dot(v0.pos + bias, coeffs);
-        float24 dp_prev = Math::Dot(v1.pos + bias, coeffs);
-        float24 factor = dp_prev / (dp_prev - dp);
-
-        return Vertex::Lerp(factor, v0, v1);
-    }
-
-private:
-    float24 pos;
-    Math::Vec4<float24> coeffs;
-    Math::Vec4<float24> bias;
-};
-
-static void InitScreenCoordinates(Vertex& vtx) {
-    struct {
-        float24 halfsize_x;
-        float24 offset_x;
-        float24 halfsize_y;
-        float24 offset_y;
-        float24 zscale;
-        float24 offset_z;
-    } viewport;
-
-    const auto& regs = g_state.regs;
-    viewport.halfsize_x = float24::FromRaw(regs.rasterizer.viewport_size_x);
-    viewport.halfsize_y = float24::FromRaw(regs.rasterizer.viewport_size_y);
-    viewport.offset_x = float24::FromFloat32(static_cast<float>(regs.rasterizer.viewport_corner.x));
-    viewport.offset_y = float24::FromFloat32(static_cast<float>(regs.rasterizer.viewport_corner.y));
-
-    float24 inv_w = float24::FromFloat32(1.f) / vtx.pos.w;
-    vtx.pos.w = inv_w;
-    vtx.quat *= inv_w;
-    vtx.color *= inv_w;
-    vtx.tc0 *= inv_w;
-    vtx.tc1 *= inv_w;
-    vtx.tc0_w *= inv_w;
-    vtx.view *= inv_w;
-    vtx.tc2 *= inv_w;
-
-    vtx.screenpos[0] =
-        (vtx.pos.x * inv_w + float24::FromFloat32(1.0)) * viewport.halfsize_x + viewport.offset_x;
-    vtx.screenpos[1] =
-        (vtx.pos.y * inv_w + float24::FromFloat32(1.0)) * viewport.halfsize_y + viewport.offset_y;
-    vtx.screenpos[2] = vtx.pos.z * inv_w;
-}
-
-void ProcessTriangle(const OutputVertex& v0, const OutputVertex& v1, const OutputVertex& v2) {
-    using boost::container::static_vector;
-
-    // Clipping a planar n-gon against a plane will remove at least 1 vertex and introduces 2 at
-    // the new edge (or less in degenerate cases). As such, we can say that each clipping plane
-    // introduces at most 1 new vertex to the polygon. Since we start with a triangle and have a
-    // fixed 6 clipping planes, the maximum number of vertices of the clipped polygon is 3 + 6 = 9.
-    static const size_t MAX_VERTICES = 9;
-    static_vector<Vertex, MAX_VERTICES> buffer_a = {v0, v1, v2};
-    static_vector<Vertex, MAX_VERTICES> buffer_b;
-
-    auto FlipQuaternionIfOpposite = [](auto& a, const auto& b) {
-        if (Math::Dot(a, b) < float24::Zero())
-            a = a * float24::FromFloat32(-1.0f);
-    };
-
-    // Flip the quaternions if they are opposite to prevent interpolating them over the wrong
-    // direction.
-    FlipQuaternionIfOpposite(buffer_a[1].quat, buffer_a[0].quat);
-    FlipQuaternionIfOpposite(buffer_a[2].quat, buffer_a[0].quat);
-
-    auto* output_list = &buffer_a;
-    auto* input_list = &buffer_b;
-
-    // NOTE: We clip against a w=epsilon plane to guarantee that the output has a positive w value.
-    // TODO: Not sure if this is a valid approach. Also should probably instead use the smallest
-    //       epsilon possible within float24 accuracy.
-    static const float24 EPSILON = float24::FromFloat32(0.00001f);
-    static const float24 f0 = float24::FromFloat32(0.0);
-    static const float24 f1 = float24::FromFloat32(1.0);
-    static const std::array<ClippingEdge, 7> clipping_edges = {{
-        {Math::MakeVec(-f1, f0, f0, f1)},                                          // x = +w
-        {Math::MakeVec(f1, f0, f0, f1)},                                           // x = -w
-        {Math::MakeVec(f0, -f1, f0, f1)},                                          // y = +w
-        {Math::MakeVec(f0, f1, f0, f1)},                                           // y = -w
-        {Math::MakeVec(f0, f0, -f1, f0)},                                          // z =  0
-        {Math::MakeVec(f0, f0, f1, f1)},                                           // z = -w
-        {Math::MakeVec(f0, f0, f0, f1), Math::Vec4<float24>(f0, f0, f0, EPSILON)}, // w = EPSILON
-    }};
-
-    // Simple implementation of the Sutherland-Hodgman clipping algorithm.
-    // TODO: Make this less inefficient (currently lots of useless buffering overhead happens here)
-    auto Clip = [&](const ClippingEdge& edge) {
-        std::swap(input_list, output_list);
-        output_list->clear();
-
-        const Vertex* reference_vertex = &input_list->back();
-
-        for (const auto& vertex : *input_list) {
-            // NOTE: This algorithm changes vertex order in some cases!
-            if (edge.IsInside(vertex)) {
-                if (edge.IsOutSide(*reference_vertex)) {
-                    output_list->push_back(edge.GetIntersection(vertex, *reference_vertex));
-                }
-
-                output_list->push_back(vertex);
-            } else if (edge.IsInside(*reference_vertex)) {
-                output_list->push_back(edge.GetIntersection(vertex, *reference_vertex));
-            }
-            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]);
-
-    for (size_t i = 0; i < output_list->size() - 2; i++) {
-        Vertex& vtx0 = (*output_list)[0];
-        Vertex& vtx1 = (*output_list)[i + 1];
-        Vertex& vtx2 = (*output_list)[i + 2];
-
-        InitScreenCoordinates(vtx2);
-
-        LOG_TRACE(Render_Software,
-                  "Triangle %lu/%lu at position (%.3f, %.3f, %.3f, %.3f), "
-                  "(%.3f, %.3f, %.3f, %.3f), (%.3f, %.3f, %.3f, %.3f) and "
-                  "screen position (%.2f, %.2f, %.2f), (%.2f, %.2f, %.2f), (%.2f, %.2f, %.2f)",
-                  i + 1, output_list->size() - 2, vtx0.pos.x.ToFloat32(), vtx0.pos.y.ToFloat32(),
-                  vtx0.pos.z.ToFloat32(), vtx0.pos.w.ToFloat32(), vtx1.pos.x.ToFloat32(),
-                  vtx1.pos.y.ToFloat32(), vtx1.pos.z.ToFloat32(), vtx1.pos.w.ToFloat32(),
-                  vtx2.pos.x.ToFloat32(), vtx2.pos.y.ToFloat32(), vtx2.pos.z.ToFloat32(),
-                  vtx2.pos.w.ToFloat32(), vtx0.screenpos.x.ToFloat32(),
-                  vtx0.screenpos.y.ToFloat32(), vtx0.screenpos.z.ToFloat32(),
-                  vtx1.screenpos.x.ToFloat32(), vtx1.screenpos.y.ToFloat32(),
-                  vtx1.screenpos.z.ToFloat32(), vtx2.screenpos.x.ToFloat32(),
-                  vtx2.screenpos.y.ToFloat32(), vtx2.screenpos.z.ToFloat32());
-
-        Rasterizer::ProcessTriangle(vtx0, vtx1, vtx2);
-    }
-}
-
-} // namespace
-
-} // namespace