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address review and move bit casts to new header

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This commit is contained in:
toxieainc 2022-10-01 03:44:22 +02:00 committed by trzy
parent 1b0e3be8dc
commit 519d695f57
7 changed files with 97 additions and 81 deletions
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5
Src/Graphics/Legacy3D/Legacy3D.cpp
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@ -161,6 +161,7 @@
#include "Supermodel.h"
#include "Shaders3D.h" // fragment and vertex shaders
#include "Graphics/Shader.h"
#include "Util/BitCast.h"
#include <algorithm>
#include <cmath>
@ -851,8 +852,8 @@ void CLegacy3D::RenderViewport(UINT32 addr, int pri, bool wideScreen)
int vpHeight = (vpnode[0x14]>>18)&0x3FFF; // height (14.2)
// Field of view and clipping
GLfloat vpTopAngle = asinf(uint_as_float(vpnode[0x0E])); // FOV Y upper half-angle (radians)
GLfloat vpBotAngle = asinf(uint_as_float(vpnode[0x12])); // FOV Y lower half-angle
GLfloat vpTopAngle = asinf(Util::UintAsFloat(vpnode[0x0E])); // FOV Y upper half-angle (radians)
GLfloat vpBotAngle = asinf(Util::UintAsFloat(vpnode[0x12])); // FOV Y lower half-angle
GLfloat fovYDegrees = (vpTopAngle+vpBotAngle)*(float)(180.0/M_PI);
// TO-DO: investigate clipping planes

51
Src/Graphics/New3D/New3D.cpp
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@ -7,6 +7,7 @@
#include <cstring>
#include <unordered_map>
#include "R3DFloat.h"
#include "Util/BitCast.h"
#define MAX_RAM_VERTS 300000
#define MAX_ROM_VERTS 1500000
@ -553,7 +554,7 @@ void CNew3D::DescendCullingNode(UINT32 addr)
if (!m_offset) { // Step 1.5+
float modelScale = uint_as_float(node[1]);
float modelScale = Util::UintAsFloat(node[1]);
if (modelScale > std::numeric_limits<float>::min()) {
m_nodeAttribs.currentModelScale = modelScale;
}
@ -573,9 +574,9 @@ void CNew3D::DescendCullingNode(UINT32 addr)
// apply translation vector
if (node[0x00] & 0x10) {
float x = uint_as_float(node[0x04 - m_offset]);
float y = uint_as_float(node[0x05 - m_offset]);
float z = uint_as_float(node[0x06 - m_offset]);
float x = Util::UintAsFloat(node[0x04 - m_offset]);
float y = Util::UintAsFloat(node[0x05 - m_offset]);
float z = Util::UintAsFloat(node[0x06 - m_offset]);
m_modelMat.Translate(x, y, z);
}
// multiply matrix, if specified
@ -831,16 +832,16 @@ void CNew3D::RenderViewport(UINT32 addr)
m_LODBlendTable = (LODBlendTable*)TranslateCullingAddress(vpnode[0x17] & 0xFFFFFF);
/*
vp->angle_left = -atan2(*(float *)&vpnode[12], *(float *)&vpnode[13]); // These values work out as the normals for the clipping planes.
vp->angle_right = atan2(*(float *)&vpnode[16], -*(float *)&vpnode[17]); // Sometimes these values (dirt devils,lost world) are totally wrong
vp->angle_top = atan2(*(float *)&vpnode[14], *(float *)&vpnode[15]); // and don't work for the frustum values exactly.
vp->angle_bottom = -atan2(*(float *)&vpnode[18], -*(float *)&vpnode[19]); // Perhaps they are just used for culling and not rendering.
vp->angle_left = -atan2f(Util::UintAsFloat(vpnode[12]), Util::UintAsFloat(vpnode[13])); // These values work out as the normals for the clipping planes.
vp->angle_right = atan2f(Util::UintAsFloat(vpnode[16]), -Util::UintAsFloat(vpnode[17])); // Sometimes these values (dirt devils,lost world) are totally wrong
vp->angle_top = atan2f(Util::UintAsFloat(vpnode[14]), Util::UintAsFloat(vpnode[15])); // and don't work for the frustum values exactly.
vp->angle_bottom = -atan2f(Util::UintAsFloat(vpnode[18]), -Util::UintAsFloat(vpnode[19])); // Perhaps they are just used for culling and not rendering.
*/
float cv = uint_as_float(vpnode[0x8]); // 1/(left-right)
float cw = uint_as_float(vpnode[0x9]); // 1/(top-bottom)
float io = uint_as_float(vpnode[0xa]); // top / bottom (ratio) - ish
float jo = uint_as_float(vpnode[0xb]); // left / right (ratio)
float cv = Util::UintAsFloat(vpnode[0x8]); // 1/(left-right)
float cw = Util::UintAsFloat(vpnode[0x9]); // 1/(top-bottom)
float io = Util::UintAsFloat(vpnode[0xa]); // top / bottom (ratio) - ish
float jo = Util::UintAsFloat(vpnode[0xb]); // left / right (ratio)
vp->angle_left = (0.0f - jo) / cv;
vp->angle_right = (1.0f - jo) / cv;
@ -854,10 +855,10 @@ void CNew3D::RenderViewport(UINT32 addr)
CalcFrustumPlanes(m_planes, vp->projectionMatrix); // we need to calc a 'projection matrix' to get the correct frustum planes for clipping
// Lighting (note that sun vector points toward sun -- away from vertex)
vp->lightingParams[0] = uint_as_float(vpnode[0x05]); // sun X
vp->lightingParams[1] = -uint_as_float(vpnode[0x06]); // sun Y (- to convert to ogl cordinate system)
vp->lightingParams[2] = -uint_as_float(vpnode[0x04]); // sun Z (- to convert to ogl cordinate system)
vp->lightingParams[3] = std::max(0.f, std::min(uint_as_float(vpnode[0x07]), 1.0f)); // sun intensity (clamp to 0-1)
vp->lightingParams[0] = Util::UintAsFloat(vpnode[0x05]); // sun X
vp->lightingParams[1] = -Util::UintAsFloat(vpnode[0x06]); // sun Y (- to convert to ogl cordinate system)
vp->lightingParams[2] = -Util::UintAsFloat(vpnode[0x04]); // sun Z (- to convert to ogl cordinate system)
vp->lightingParams[3] = std::max(0.f, std::min(Util::UintAsFloat(vpnode[0x07]), 1.0f)); // sun intensity (clamp to 0-1)
vp->lightingParams[4] = (float)((vpnode[0x24] >> 8) & 0xFF) * (float)(1.0 / 255.0); // ambient intensity
vp->lightingParams[5] = 0.0f; // reserved
@ -868,13 +869,13 @@ void CNew3D::RenderViewport(UINT32 addr)
// Spotlight
int spotColorIdx = (vpnode[0x20] >> 11) & 7; // spotlight color index
int spotFogColorIdx = (vpnode[0x20] >> 8) & 7; // spotlight on fog color index
vp->spotEllipse[0] = (float)(INT16)(vpnode[0x1E] & 0xFFFF) * (float)(1.0 / 8.0); // spotlight X position (13.3 fixed point)
vp->spotEllipse[1] = (float)(INT16)(vpnode[0x1D] & 0xFFFF) * (float)(1.0 / 8.0); // spotlight Y
vp->spotEllipse[0] = (float)(INT16)(vpnode[0x1E] & 0xFFFF) * (float)(1.0 / 8.0);// spotlight X position (13.3 fixed point)
vp->spotEllipse[1] = (float)(INT16)(vpnode[0x1D] & 0xFFFF) * (float)(1.0 / 8.0);// spotlight Y
vp->spotEllipse[2] = (float)((vpnode[0x1E] >> 16) & 0xFFFF); // spotlight X size (16-bit)
vp->spotEllipse[3] = (float)((vpnode[0x1D] >> 16) & 0xFFFF); // spotlight Y size
vp->spotRange[0] = 1.0f / uint_as_float(vpnode[0x21]); // spotlight start
vp->spotRange[1] = uint_as_float(vpnode[0x1F]); // spotlight extent
vp->spotRange[0] = 1.0f / Util::UintAsFloat(vpnode[0x21]); // spotlight start
vp->spotRange[1] = Util::UintAsFloat(vpnode[0x1F]); // spotlight extent
vp->spotColor[0] = color[spotColorIdx][0]; // spotlight color
vp->spotColor[1] = color[spotColorIdx][1];
@ -908,7 +909,7 @@ void CNew3D::RenderViewport(UINT32 addr)
vp->fogParams[0] = (float)((vpnode[0x22] >> 16) & 0xFF) * (float)(1.0 / 255.0); // fog color R
vp->fogParams[1] = (float)((vpnode[0x22] >> 8) & 0xFF) * (float)(1.0 / 255.0); // fog color G
vp->fogParams[2] = (float)((vpnode[0x22] >> 0) & 0xFF) * (float)(1.0 / 255.0); // fog color B
vp->fogParams[3] = std::abs(uint_as_float(vpnode[0x23])); // fog density - ocean hunter uses negative values, but looks the same
vp->fogParams[3] = std::abs(Util::UintAsFloat(vpnode[0x23])); // fog density - ocean hunter uses negative values, but looks the same
vp->fogParams[4] = (float)(INT16)(vpnode[0x25] & 0xFFFF)* (float)(1.0 / 255.0); // fog start
// Avoid Infinite and NaN values for Star Wars Trilogy
@ -1065,6 +1066,9 @@ void CNew3D::SetMeshValues(SortingMesh *currentMesh, PolyHeader &ph)
void CNew3D::CacheModel(Model *m, const UINT32 *data)
{
if (data == NULL)
return;
UINT16 texCoords[4][2];
PolyHeader ph;
UINT64 lastHash = -1;
@ -1072,9 +1076,6 @@ void CNew3D::CacheModel(Model *m, const UINT32 *data)
std::unordered_map<UINT64, SortingMesh> sMap;
if (data == NULL)
return;
ph = data;
int numTriangles = ph.NumTrianglesTotal();
@ -1253,7 +1254,7 @@ void CNew3D::CacheModel(Model *m, const UINT32 *data)
//sorted the data, now copy to main data structures
// we know how many meshes we have so reserve appropriate space
// we know how many meshes we have to reserve appropriate space
m->meshes->reserve(sMap.size());
for (auto& it : sMap) {

4
Src/Graphics/New3D/R3DFloat.cpp
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@ -1,6 +1,6 @@
#include "Types.h"
#include "R3DFloat.h"
#include "Util/GenericValue.h"
#include "Util/BitCast.h"
float R3DFloat::GetFloat16(UINT16 f)
{
@ -35,5 +35,5 @@ UINT32 R3DFloat::Convert16BitProFloat(UINT32 a1)
float R3DFloat::ToFloat(UINT32 a1)
{
return uint_as_float(a1);
return Util::UintAsFloat(a1);
}

61
Src/Util/BitCast.h Normal file
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@ -0,0 +1,61 @@
#ifndef INCLUDED_UTIL_BITCAST_H
#define INCLUDED_UTIL_BITCAST_H
#include <stdexcept>
#include <cstring>
namespace Util
{
#if __cplusplus >= 202002L
#include <bit>
#define FloatAsInt(x) std::bit_cast<int>(x)
#define IntAsFloat(x) std::bit_cast<float>(x)
#define UintAsFloat(x) std::bit_cast<float>(x)
#elif 1
template <class Dest, class Source>
inline Dest bit_cast(Source const& source) {
static_assert(sizeof(Dest) == sizeof(Source), "size of destination and source objects must be equal");
static_assert(std::is_trivially_copyable<Dest>::value, "destination type must be trivially copyable.");
static_assert(std::is_trivially_copyable<Source>::value, "source type must be trivially copyable");
Dest dest;
std::memcpy(&dest, &source, sizeof(dest));
return dest;
}
#define FloatAsInt(x) bit_cast<int,float>(x)
#define IntAsFloat(x) bit_cast<float,int>(x)
#define UintAsFloat(x) bit_cast<float,unsigned int>(x)
#else
inline int FloatAsInt(const float x)
{
union {
float f;
int i;
} uc;
uc.f = x;
return uc.i;
}
inline float IntAsFloat(const int i)
{
union {
int i;
float f;
} iaf;
iaf.i = i;
return iaf.f;
}
inline float UintAsFloat(const unsigned int i)
{
union {
unsigned int u;
float f;
} iaf;
iaf.u = i;
return iaf.f;
}
#endif
} // Util
#endif // INCLUDED_UTIL_BITCAST_H

51
Src/Util/GenericValue.h
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@ -20,57 +20,6 @@
#include <memory>
#include <cctype>
#if __cplusplus >= 202002L
#include <bit>
#define float_as_int(x) std::bit_cast<int>(x)
#define int_as_float(x) std::bit_cast<float>(x)
#define uint_as_float(x) std::bit_cast<float>(x)
#elif 1
template <class Dest, class Source>
inline Dest bit_cast(Source const& source) {
static_assert(sizeof(Dest) == sizeof(Source), "size of destination and source objects must be equal");
static_assert(std::is_trivially_copyable<Dest>::value, "destination type must be trivially copyable.");
static_assert(std::is_trivially_copyable<Source>::value, "source type must be trivially copyable");
Dest dest;
std::memcpy(&dest, &source, sizeof(dest));
return dest;
}
#define float_as_int(x) bit_cast<int,float>(x)
#define int_as_float(x) bit_cast<float,int>(x)
#define uint_as_float(x) bit_cast<float,unsigned int>(x)
#else
inline int float_as_int(const float x)
{
union {
float f;
int i;
} uc;
uc.f = x;
return uc.i;
}
inline float int_as_float(const int i)
{
union {
int i;
float f;
} iaf;
iaf.i = i;
return iaf.f;
}
inline float uint_as_float(const unsigned int i)
{
union {
unsigned int u;
float f;
} iaf;
iaf.u = i;
return iaf.f;
}
#endif
namespace Util
{
namespace detail

3
VS2008/Supermodel.vcxproj
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@ -1,4 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup Label="ProjectConfigurations">
<ProjectConfiguration Include="Debug|Win32">
@ -545,6 +545,7 @@ xcopy /D /Y "$(ProjectDir)..\Config\*" "$(TargetDir)Config"</Command>
<ClInclude Include="..\Src\Sound\SCSP.h" />
<ClInclude Include="..\Src\Sound\SCSPDSP.h" />
<ClInclude Include="..\Src\Supermodel.h" />
<ClInclude Include="..\Src\Util\BitCast.h" />
<ClInclude Include="..\Src\Util\BitRegister.h" />
<ClInclude Include="..\Src\Util\BMPFile.h" />
<ClInclude Include="..\Src\Util\ByteSwap.h" />

3
VS2008/Supermodel.vcxproj.filters
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@ -847,6 +847,9 @@
<ClInclude Include="..\Src\Graphics\New3D\Vec.h">
<Filter>Header Files\Graphics\New</Filter>
</ClInclude>
<ClInclude Include="..\Src\Util\BitCast.h">
<Filter>Header Files\Util</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<CustomBuild Include="..\Src\Debugger\ReadMe.txt">