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Further work on the IRR and IRRMESH loaders. IRR is still WIP, IRRMESH loads lightmaps correctly now.

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Added lightmap viewing support to the viewer. Irrlicht's tone scaling is hardcoded for the moment, a proper implementation will follow with the new viewer.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@232 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
This commit is contained in:
aramis_acg
2008-11-05 12:26:11 +00:00
parent 7c50899481
commit df9f4130eb
7 changed files with 234 additions and 18 deletions
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142
code/IRRMeshLoader.cpp
View File

@@ -191,7 +191,9 @@ void ColorFromARGBPacked(uint32_t in, aiColor4D& clr)
int ConvertMappingMode(const std::string& mode)
{
if (mode == "texture_clamp_repeat")
{
return aiTextureMapMode_Wrap;
}
else if (mode == "texture_clamp_mirror")
return aiTextureMapMode_Mirror;
@@ -206,7 +208,8 @@ aiMaterial* IrrlichtBase::ParseMaterial(unsigned int& matFlags)
aiColor4D clr;
aiString s;
matFlags = 0;
matFlags = 0; // zero output flags
int cnt = 0; // number of used texture channels
// Continue reading from the file
while (reader->read())
@@ -274,8 +277,6 @@ aiMaterial* IrrlichtBase::ParseMaterial(unsigned int& matFlags)
{
StringProperty prop;
ReadStringProperty(prop);
int cnt = 0;
if (prop.value.length())
{
// material type (shader)
@@ -289,6 +290,10 @@ aiMaterial* IrrlichtBase::ParseMaterial(unsigned int& matFlags)
{
matFlags = AI_IRRMESH_MAT_lightmap;
}
else if (prop.value == "solid_2layer")
{
matFlags = AI_IRRMESH_MAT_solid_2layer;
}
else if (prop.value == "lightmap_m2")
{
matFlags = AI_IRRMESH_MAT_lightmap_m2;
@@ -297,32 +302,90 @@ aiMaterial* IrrlichtBase::ParseMaterial(unsigned int& matFlags)
{
matFlags = AI_IRRMESH_MAT_lightmap_m4;
}
else if (prop.value == "lightmap_light")
{
matFlags = AI_IRRMESH_MAT_lightmap_light;
}
else if (prop.value == "lightmap_light_m2")
{
matFlags = AI_IRRMESH_MAT_lightmap_light_m2;
}
else if (prop.value == "lightmap_light_m4")
{
matFlags = AI_IRRMESH_MAT_lightmap_light_m4;
}
else if (prop.value == "lightmap_add")
{
matFlags = AI_IRRMESH_MAT_lightmap_add;
}
// Normal and parallax maps are treated equally
else if (prop.value == "normalmap_solid" ||
prop.value == "parallaxmap_solid")
{
matFlags = AI_IRRMESH_MAT_normalmap_solid;
}
else if (prop.value == "normalmap_trans_vertex_alpha" ||
prop.value == "parallaxmap_trans_vertex_alpha")
{
matFlags = AI_IRRMESH_MAT_normalmap_tva;
}
else if (prop.value == "normalmap_trans_add" ||
prop.value == "parallaxmap_trans_add")
{
matFlags = AI_IRRMESH_MAT_normalmap_ta;
}
}
// Up to 4 texture channels are supported
else if (prop.name == "Texture1")
{
// Always accept the primary texture channel
++cnt;
s.Set(prop.value);
mat->AddProperty(&s,AI_MATKEY_TEXTURE_DIFFUSE(0));
}
else if (prop.name == "Texture2")
{
++cnt;
s.Set(prop.value);
mat->AddProperty(&s,AI_MATKEY_TEXTURE_DIFFUSE(1));
// 2-layer material lightmapped?
if (matFlags & (AI_IRRMESH_MAT_solid_2layer | AI_IRRMESH_MAT_lightmap))
{
++cnt;
s.Set(prop.value);
mat->AddProperty(&s,AI_MATKEY_TEXTURE_DIFFUSE(1));
// set the corresponding material flag
matFlags |= AI_IRRMESH_EXTRA_2ND_TEXTURE;
}
// alternatively: normal or parallax mapping
else if (matFlags & AI_IRRMESH_MAT_normalmap_solid)
{
++cnt;
s.Set(prop.value);
mat->AddProperty(&s,AI_MATKEY_TEXTURE_NORMALS(1));
// set the corresponding material flag
matFlags |= AI_IRRMESH_EXTRA_2ND_TEXTURE;
}
}
else if (prop.name == "Texture3")
{
// We don't process the third texture channel as Irrlicht
// does not seem to use it.
#if 0
++cnt;
s.Set(prop.value);
mat->AddProperty(&s,AI_MATKEY_TEXTURE_DIFFUSE(2));
#endif
}
else if (prop.name == "Texture4" )
{
// We don't process the fourth texture channel as Irrlicht
// does not seem to use it.
#if 0
++cnt;
s.Set(prop.value);
mat->AddProperty(&s,AI_MATKEY_TEXTURE_DIFFUSE(3));
#endif
}
// Texture mapping options
@@ -360,6 +423,47 @@ aiMaterial* IrrlichtBase::ParseMaterial(unsigned int& matFlags)
if (/* IRRMESH */ !ASSIMP_stricmp(reader->getNodeName(),"material") ||
/* IRR */ !ASSIMP_stricmp(reader->getNodeName(),"attributes"))
{
// Now process lightmapping flags
// We should have at least one texture, however
// if there are multiple textures we assign the
// lightmap settings to the last texture.
if (cnt && matFlags & AI_IRRMESH_MAT_lightmap)
{
static const char* PropArray[4] =
{
AI_MATKEY_TEXBLEND_DIFFUSE(0),
AI_MATKEY_TEXBLEND_DIFFUSE(1),
AI_MATKEY_TEXBLEND_DIFFUSE(2),
AI_MATKEY_TEXBLEND_DIFFUSE(3)
};
static const char* PropArray2[4] =
{
AI_MATKEY_TEXOP_DIFFUSE(0),
AI_MATKEY_TEXOP_DIFFUSE(1),
AI_MATKEY_TEXOP_DIFFUSE(2),
AI_MATKEY_TEXOP_DIFFUSE(3)
};
float f = 1.f;
// Additive lightmap?
int op = (matFlags & AI_IRRMESH_MAT_lightmap_add
? aiTextureOp_Add : aiTextureOp_Multiply);
// Handle Irrlicht's lightmapping scaling factor
if (matFlags & AI_IRRMESH_MAT_lightmap_m2 ||
matFlags & AI_IRRMESH_MAT_lightmap_light_m2)
{
f = 2.f;
}
else if (matFlags & AI_IRRMESH_MAT_lightmap_m4 ||
matFlags & AI_IRRMESH_MAT_lightmap_light_m4)
{
f = 4.f;
}
mat->AddProperty( &f, 1, PropArray [cnt-1]);
mat->AddProperty( &op,1, PropArray2 [cnt-1]);
}
return mat;
}
default:
@@ -514,6 +618,27 @@ void IRRMeshImporter::InternReadFile( const std::string& pFile,
{
curUV2s.reserve (num);
vertexFormat = 1;
if (curMatFlags & AI_IRRMESH_EXTRA_2ND_TEXTURE)
{
// *********************************************************
// We have a second texture! So use this UV channel
// for it. The 2nd texture can be either a normal
// texture (solid_2layer or lightmap_xxx) or a normal
// map (normal_..., parallax_...)
// *********************************************************
int idx = 1;
MaterialHelper* mat = ( MaterialHelper* ) curMat;
if (curMatFlags & (AI_IRRMESH_MAT_solid_2layer | AI_IRRMESH_MAT_lightmap))
{
mat->AddProperty(&idx,1,AI_MATKEY_UVWSRC_DIFFUSE(0));
}
else if (curMatFlags & AI_IRRMESH_MAT_normalmap_solid)
{
mat->AddProperty(&idx,1,AI_MATKEY_UVWSRC_NORMALS(0));
}
}
}
else if (!ASSIMP_stricmp("tangents", t))
{
@@ -789,11 +914,6 @@ void IRRMeshImporter::InternReadFile( const std::string& pFile,
if (materials.empty())
throw new ImportErrorException("IRRMESH: Unable to read a mesh from this file");
if(needLightMap)
{
// Compute light map UV coordinates
// ComputeLightMapUVCoordinates(meshes,materials);
}
// now generate the output scene
pScene->mNumMeshes = (unsigned int)meshes.size();

34
code/IRRMeshLoader.h
View File

@@ -48,10 +48,36 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
namespace Assimp {
#define AI_IRRMESH_MAT_trans_vertex_alpha 0x1
#define AI_IRRMESH_MAT_lightmap 0x2
#define AI_IRRMESH_MAT_lightmap_m2 (AI_IRRMESH_MAT_lightmap|0x4)
#define AI_IRRMESH_MAT_lightmap_m4 (AI_IRRMESH_MAT_lightmap|0x5)
// Default: 0 = solid, one texture
#define AI_IRRMESH_MAT_solid_2layer 0x10000
// Transparency flags
#define AI_IRRMESH_MAT_trans_vertex_alpha 0x1
#define AI_IRRMESH_MAT_trans_add 0x2
// Lightmapping flags
#define AI_IRRMESH_MAT_lightmap 0x2
#define AI_IRRMESH_MAT_lightmap_m2 (AI_IRRMESH_MAT_lightmap|0x4)
#define AI_IRRMESH_MAT_lightmap_m4 (AI_IRRMESH_MAT_lightmap|0x8)
#define AI_IRRMESH_MAT_lightmap_light (AI_IRRMESH_MAT_lightmap|0x10)
#define AI_IRRMESH_MAT_lightmap_light_m2 (AI_IRRMESH_MAT_lightmap|0x20)
#define AI_IRRMESH_MAT_lightmap_light_m4 (AI_IRRMESH_MAT_lightmap|0x40)
#define AI_IRRMESH_MAT_lightmap_add (AI_IRRMESH_MAT_lightmap|0x80)
// Standard NormalMap (or Parallax map, they're treated equally)
#define AI_IRRMESH_MAT_normalmap_solid (0x100)
// Normal map combined with vertex alpha
#define AI_IRRMESH_MAT_normalmap_tva \
(AI_IRRMESH_MAT_normalmap_solid | AI_IRRMESH_MAT_trans_vertex_alpha)
// Normal map combined with additive transparency
#define AI_IRRMESH_MAT_normalmap_ta \
(AI_IRRMESH_MAT_normalmap_solid | AI_IRRMESH_MAT_trans_add)
// Special flag. It indicates a second texture has been found
// Its type depends ... either a normal textue or a normal map
#define AI_IRRMESH_EXTRA_2ND_TEXTURE 0x100000
// ---------------------------------------------------------------------------