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propagating precision requirments into operations

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This commit is contained in:
Chris Russ
2016-07-15 15:38:29 +10:00
parent 5adb0e899c
commit fa1d6d8c55
36 changed files with 437 additions and 411 deletions
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52
code/3DSLoader.cpp
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@@ -458,20 +458,20 @@ void Discreet3DSImporter::ParseChunk(const char* name, unsigned int num)
camera->mLookAt.x = stream->GetF4() - camera->mPosition.x;
camera->mLookAt.y = stream->GetF4() - camera->mPosition.y;
camera->mLookAt.z = stream->GetF4() - camera->mPosition.z;
float len = camera->mLookAt.Length();
if (len < 1e-5f) {
ai_real len = camera->mLookAt.Length();
if (len < 1e-5) {
// There are some files with lookat == position. Don't know why or whether it's ok or not.
DefaultLogger::get()->error("3DS: Unable to read proper camera look-at vector");
camera->mLookAt = aiVector3D(0.f,1.f,0.f);
camera->mLookAt = aiVector3D(0.0,1.0,0.0);
}
else camera->mLookAt /= len;
// And finally - the camera rotation angle, in counter clockwise direction
const float angle = AI_DEG_TO_RAD( stream->GetF4() );
const ai_real angle = AI_DEG_TO_RAD( stream->GetF4() );
aiQuaternion quat(camera->mLookAt,angle);
camera->mUp = quat.GetMatrix() * aiVector3D(0.f,1.f,0.f);
camera->mUp = quat.GetMatrix() * aiVector3D(0.0,1.0,0.0);
// Read the lense angle
camera->mHorizontalFOV = AI_DEG_TO_RAD ( stream->GetF4() );
@@ -1167,13 +1167,13 @@ void Discreet3DSImporter::ParseMaterialChunk()
case Discreet3DS::CHUNK_MAT_TRANSPARENCY:
{
// This is the material's transparency
float* pcf = &mScene->mMaterials.back().mTransparency;
ai_real* pcf = &mScene->mMaterials.back().mTransparency;
*pcf = ParsePercentageChunk();
// NOTE: transparency, not opacity
if (is_qnan(*pcf))
*pcf = 1.0f;
else *pcf = 1.0f - *pcf * (float)0xFFFF / 100.0f;
*pcf = 1.0;
else *pcf = 1.0 - *pcf * (ai_real)0xFFFF / 100.0;
}
break;
@@ -1189,30 +1189,30 @@ void Discreet3DSImporter::ParseMaterialChunk()
case Discreet3DS::CHUNK_MAT_SHININESS:
{ // This is the shininess of the material
float* pcf = &mScene->mMaterials.back().mSpecularExponent;
ai_real* pcf = &mScene->mMaterials.back().mSpecularExponent;
*pcf = ParsePercentageChunk();
if (is_qnan(*pcf))
*pcf = 0.0f;
else *pcf *= (float)0xFFFF;
*pcf = 0.0;
else *pcf *= (ai_real)0xFFFF;
}
break;
case Discreet3DS::CHUNK_MAT_SHININESS_PERCENT:
{ // This is the shininess strength of the material
float* pcf = &mScene->mMaterials.back().mShininessStrength;
ai_real* pcf = &mScene->mMaterials.back().mShininessStrength;
*pcf = ParsePercentageChunk();
if (is_qnan(*pcf))
*pcf = 0.0f;
else *pcf *= (float)0xffff / 100.0f;
*pcf = 0.0;
else *pcf *= (ai_real)0xffff / 100.0;
}
break;
case Discreet3DS::CHUNK_MAT_SELF_ILPCT:
{ // This is the self illumination strength of the material
float f = ParsePercentageChunk();
ai_real f = ParsePercentageChunk();
if (is_qnan(f))
f = 0.0f;
else f *= (float)0xFFFF / 100.0f;
f = 0.0;
else f *= (ai_real)0xFFFF / 100.0;
mScene->mMaterials.back().mEmissive = aiColor3D(f,f,f);
}
break;
@@ -1277,7 +1277,7 @@ void Discreet3DSImporter::ParseTextureChunk(D3DS::Texture* pcOut)
case Discreet3DS::CHUNK_PERCENTW:
// Manually parse the blend factor
pcOut->mTextureBlend = (float)((uint16_t)stream->GetI2()) / 100.0f;
pcOut->mTextureBlend = (ai_real)((uint16_t)stream->GetI2()) / 100.0;
break;
case Discreet3DS::CHUNK_MAT_MAP_USCALE:
@@ -1336,7 +1336,7 @@ void Discreet3DSImporter::ParseTextureChunk(D3DS::Texture* pcOut)
// ------------------------------------------------------------------------------------------------
// Read a percentage chunk
float Discreet3DSImporter::ParsePercentageChunk()
ai_real Discreet3DSImporter::ParsePercentageChunk()
{
Discreet3DS::Chunk chunk;
ReadChunk(&chunk);
@@ -1344,7 +1344,7 @@ float Discreet3DSImporter::ParsePercentageChunk()
if (Discreet3DS::CHUNK_PERCENTF == chunk.Flag)
return stream->GetF4();
else if (Discreet3DS::CHUNK_PERCENTW == chunk.Flag)
return (float)((uint16_t)stream->GetI2()) / (float)0xFFFF;
return (ai_real)((uint16_t)stream->GetI2()) / (ai_real)0xFFFF;
return get_qnan();
}
@@ -1356,7 +1356,7 @@ void Discreet3DSImporter::ParseColorChunk(aiColor3D* out,
ai_assert(out != NULL);
// error return value
const float qnan = get_qnan();
const ai_real qnan = get_qnan();
static const aiColor3D clrError = aiColor3D(qnan,qnan,qnan);
Discreet3DS::Chunk chunk;
@@ -1372,7 +1372,7 @@ void Discreet3DSImporter::ParseColorChunk(aiColor3D* out,
bGamma = true;
case Discreet3DS::CHUNK_RGBF:
if (sizeof(float) * 3 > diff) {
if (sizeof(ai_real) * 3 > diff) {
*out = clrError;
return;
}
@@ -1388,9 +1388,9 @@ void Discreet3DSImporter::ParseColorChunk(aiColor3D* out,
*out = clrError;
return;
}
out->r = (float)(uint8_t)stream->GetI1() / 255.0f;
out->g = (float)(uint8_t)stream->GetI1() / 255.0f;
out->b = (float)(uint8_t)stream->GetI1() / 255.0f;
out->r = (ai_real)(uint8_t)stream->GetI1() / 255.0;
out->g = (ai_real)(uint8_t)stream->GetI1() / 255.0;
out->b = (ai_real)(uint8_t)stream->GetI1() / 255.0;
break;
// Percentage chunks are accepted, too.
@@ -1404,7 +1404,7 @@ void Discreet3DSImporter::ParseColorChunk(aiColor3D* out,
case Discreet3DS::CHUNK_PERCENTW:
if (acceptPercent && 1 <= diff) {
out->g = out->b = out->r = (float)(uint8_t)stream->GetI1() / 255.0f;
out->g = out->b = out->r = (ai_real)(uint8_t)stream->GetI1() / 255.0;
break;
}
*out = clrError;