mirror of https://github.com/AxioDL/metaforce.git
174 lines
6.6 KiB
C++
174 lines
6.6 KiB
C++
#include "CSpaceWarpFilter.hpp"
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#include "Graphics/CGraphics.hpp"
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#include "Graphics/CBooRenderer.hpp"
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#include "hecl/Pipeline.hpp"
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#define WARP_RAMP_RES 32
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namespace urde
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{
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static boo::ObjToken<boo::IShaderPipeline> s_Pipeline;
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void CSpaceWarpFilter::Initialize()
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{
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s_Pipeline = hecl::conv->convert(Shader_CSpaceWarpFilter{});
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}
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void CSpaceWarpFilter::Shutdown()
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{
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s_Pipeline.reset();
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}
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void CSpaceWarpFilter::GenerateWarpRampTex(boo::IGraphicsDataFactory::Context& ctx)
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{
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u8 data[WARP_RAMP_RES+1][WARP_RAMP_RES+1][4] = {};
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float halfRes = WARP_RAMP_RES / 2.f;
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for (int y=0 ; y<WARP_RAMP_RES+1 ; ++y)
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{
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for (int x=0 ; x<WARP_RAMP_RES+1 ; ++x)
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{
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zeus::CVector2f vec((x - halfRes) / halfRes, (y - halfRes) / halfRes);
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float mag = vec.magnitude();
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if (mag < 1.f && vec.canBeNormalized())
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{
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vec.normalize();
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vec *= zeus::CVector2f(std::sqrt(mag));
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}
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data[y][x][0] = zeus::clamp(0, int((((vec.x() / 2.f + 0.5f) - x / float(WARP_RAMP_RES)) + 0.5f) * 255), 255);
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data[y][x][1] = zeus::clamp(0, int((((vec.y() / 2.f + 0.5f) - y / float(WARP_RAMP_RES)) + 0.5f) * 255), 255);
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}
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}
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m_warpTex = ctx.newStaticTexture(WARP_RAMP_RES+1, WARP_RAMP_RES+1, 1,
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boo::TextureFormat::RGBA8, boo::TextureClampMode::Repeat,
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data[0], (WARP_RAMP_RES+1) * (WARP_RAMP_RES+1) * 4).get();
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}
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CSpaceWarpFilter::CSpaceWarpFilter()
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{
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CGraphics::CommitResources([&](boo::IGraphicsDataFactory::Context& ctx)
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{
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GenerateWarpRampTex(ctx);
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struct Vert
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{
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zeus::CVector2f m_pos;
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zeus::CVector2f m_uv;
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} verts[4] =
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{
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{{-1.0, -1.0}, {0.0, 0.0}},
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{{-1.0, 1.0}, {0.0, 1.0}},
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{{ 1.0, -1.0}, {1.0, 0.0}},
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{{ 1.0, 1.0}, {1.0, 1.0}},
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};
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m_vbo = ctx.newStaticBuffer(boo::BufferUse::Vertex, verts, 32, 4);
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m_uniBuf = ctx.newDynamicBuffer(boo::BufferUse::Uniform, sizeof(Uniform), 1);
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boo::ObjToken<boo::IGraphicsBuffer> bufs[] = {m_uniBuf.get()};
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boo::PipelineStage stages[] = {boo::PipelineStage::Vertex};
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boo::ObjToken<boo::ITexture> texs[] = {CGraphics::g_SpareTexture.get(), m_warpTex.get()};
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m_dataBind = ctx.newShaderDataBinding(s_Pipeline, m_vbo.get(), nullptr, nullptr,
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1, bufs, stages, nullptr, nullptr, 2, texs, nullptr, nullptr);
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return true;
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} BooTrace);
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}
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void CSpaceWarpFilter::draw(const zeus::CVector3f& pt)
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{
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/* Indirect coords are full-texture sampling when warp is completely in viewport */
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m_uniform.m_indXf[1][1] = 1.f;
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m_uniform.m_indXf[0][0] = 1.f;
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m_uniform.m_indXf[2][0] = 0.f;
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m_uniform.m_indXf[2][1] = 0.f;
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/* Warp effect is fixed at 192x192 rectangle in original (1/2.5 viewport height) */
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float aspect = CGraphics::g_CroppedViewport.xc_width / float(CGraphics::g_CroppedViewport.x10_height);
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m_uniform.m_matrix[1][1] = 1.f / 2.5f;
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m_uniform.m_matrix[0][0] = m_uniform.m_matrix[1][1] / aspect;
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SClipScreenRect clipRect = {};
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clipRect.x4_left = ((pt[0] - m_uniform.m_matrix[0][0]) / 2.f + 0.5f) * CGraphics::g_CroppedViewport.xc_width;
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if (clipRect.x4_left >= CGraphics::g_CroppedViewport.xc_width)
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return;
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clipRect.x8_top = ((pt[1] - m_uniform.m_matrix[1][1]) / 2.f + 0.5f) * CGraphics::g_CroppedViewport.x10_height;
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if (clipRect.x8_top >= CGraphics::g_CroppedViewport.x10_height)
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return;
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clipRect.xc_width = CGraphics::g_CroppedViewport.xc_width * m_uniform.m_matrix[0][0];
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if (clipRect.x4_left + clipRect.xc_width <= 0)
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return;
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clipRect.x10_height = CGraphics::g_CroppedViewport.x10_height * m_uniform.m_matrix[1][1];
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if (clipRect.x8_top + clipRect.x10_height <= 0)
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return;
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float oldW = clipRect.xc_width;
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if (clipRect.x4_left < 0)
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{
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clipRect.xc_width += clipRect.x4_left;
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m_uniform.m_indXf[0][0] = clipRect.xc_width / oldW;
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m_uniform.m_indXf[2][0] = -clipRect.x4_left / oldW;
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clipRect.x4_left = 0;
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}
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float oldH = clipRect.x10_height;
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if (clipRect.x8_top < 0)
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{
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clipRect.x10_height += clipRect.x8_top;
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m_uniform.m_indXf[1][1] = clipRect.x10_height / oldH;
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m_uniform.m_indXf[2][1] = -clipRect.x8_top / oldH;
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clipRect.x8_top = 0;
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}
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float tmp = clipRect.x4_left + clipRect.xc_width;
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if (tmp >= CGraphics::g_CroppedViewport.xc_width)
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{
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clipRect.xc_width = CGraphics::g_CroppedViewport.xc_width - clipRect.x4_left;
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m_uniform.m_indXf[0][0] = clipRect.xc_width / oldW;
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}
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tmp = clipRect.x8_top + clipRect.x10_height;
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if (tmp >= CGraphics::g_CroppedViewport.x10_height)
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{
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clipRect.x10_height = CGraphics::g_CroppedViewport.x10_height - clipRect.x8_top;
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m_uniform.m_indXf[1][1] = clipRect.x10_height / oldH;
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}
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/* Transform UV coordinates of rectangle within viewport and sampled scene texels (clamped to viewport bounds) */
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zeus::CVector2f vp{float(CGraphics::g_CroppedViewport.xc_width), float(CGraphics::g_CroppedViewport.x10_height)};
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m_uniform.m_matrix[0][0] = clipRect.xc_width / vp.x();
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m_uniform.m_matrix[1][1] = clipRect.x10_height / vp.y();
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m_uniform.m_matrix[3][0] = pt.x() + (1.f / vp.x());
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m_uniform.m_matrix[3][1] = pt.y() + (1.f / vp.y());
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if (CGraphics::g_BooPlatform == boo::IGraphicsDataFactory::Platform::OpenGL)
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m_uniform.m_matrix[3][2] = pt.z() * 2.f - 1.f;
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else
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m_uniform.m_matrix[3][2] = pt.z();
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if (clipRect.x4_left)
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{
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clipRect.x4_left -= 1;
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clipRect.xc_width += 1;
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}
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if (clipRect.x8_top)
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{
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clipRect.x8_top -= 1;
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clipRect.x10_height += 1;
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}
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if (clipRect.x4_left + clipRect.xc_width < CGraphics::g_CroppedViewport.xc_width)
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clipRect.xc_width += 1;
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if (clipRect.x8_top + clipRect.x10_height < CGraphics::g_CroppedViewport.x10_height)
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clipRect.x10_height += 1;
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clipRect.x4_left += CGraphics::g_CroppedViewport.x4_left;
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clipRect.x8_top += CGraphics::g_CroppedViewport.x8_top;
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clipRect.x8_top = g_Viewport.xc_height - clipRect.x10_height - clipRect.x8_top;
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CGraphics::ResolveSpareTexture(clipRect);
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m_uniform.m_strength.x() = m_uniform.m_matrix[0][0] * m_strength * 0.5f *
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(clipRect.x10_height / float(clipRect.xc_width));
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m_uniform.m_strength.y() = m_uniform.m_matrix[1][1] * m_strength * 0.5f;
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m_uniBuf->load(&m_uniform, sizeof(m_uniform));
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CGraphics::SetShaderDataBinding(m_dataBind);
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CGraphics::DrawArray(0, 4);
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}
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}
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