size_t VAOManager::getVertexPitch(enum VTXTYPE tp) const
{
switch (tp)
{
case VTXTYPE_STANDARD:
return getVertexPitchFromType(video::EVT_STANDARD);
case VTXTYPE_TCOORD:
return getVertexPitchFromType(video::EVT_2TCOORDS);
case VTXTYPE_TANGENT:
return getVertexPitchFromType(video::EVT_TANGENTS);
default:
assert(0 && "Wrong vtxtype");
return -1;
}
}
void shadeMeshFaces(scene::IMesh *mesh)
{
if (mesh == NULL)
return;
u32 mc = mesh->getMeshBufferCount();
for (u32 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
const u32 stride = getVertexPitchFromType(buf->getVertexType());
u32 vertex_count = buf->getVertexCount();
u8 *vertices = (u8 *)buf->getVertices();
for (u32 i = 0; i < vertex_count; i++) {
video::S3DVertex *vertex = (video::S3DVertex *)(vertices + i * stride);
video::SColor &vc = vertex->Color;
if (vertex->Normal.Y < -0.5) {
applyFacesShading (vc, 0.447213);
} else if (vertex->Normal.Z > 0.5) {
applyFacesShading (vc, 0.670820);
} else if (vertex->Normal.Z < -0.5) {
applyFacesShading (vc, 0.670820);
} else if (vertex->Normal.X > 0.5) {
applyFacesShading (vc, 0.836660);
} else if (vertex->Normal.X < -0.5) {
applyFacesShading (vc, 0.836660);
}
}
}
}
void translateMesh(scene::IMesh *mesh, v3f vec)
{
if (mesh == NULL)
return;
core::aabbox3d<f32> bbox;
bbox.reset(0, 0, 0);
u32 mc = mesh->getMeshBufferCount();
for (u32 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
const u32 stride = getVertexPitchFromType(buf->getVertexType());
u32 vertex_count = buf->getVertexCount();
u8 *vertices = (u8 *)buf->getVertices();
for (u32 i = 0; i < vertex_count; i++)
((video::S3DVertex *)(vertices + i * stride))->Pos += vec;
buf->recalculateBoundingBox();
// calculate total bounding box
if (j == 0)
bbox = buf->getBoundingBox();
else
bbox.addInternalBox(buf->getBoundingBox());
}
mesh->setBoundingBox(bbox);
}
GLMesh allocateMeshBuffer(scene::IMeshBuffer* mb)
{
GLMesh result = {};
if (!mb)
return result;
result.IndexCount = mb->getIndexCount();
switch (mb->getIndexType())
{
case irr::video::EIT_16BIT:
{
result.IndexType = GL_UNSIGNED_SHORT;
break;
}
case irr::video::EIT_32BIT:
{
result.IndexType = GL_UNSIGNED_INT;
break;
}
default:
{
assert(0 && "Wrong index size");
}
}
result.VAOType = mb->getVertexType();
result.Stride = getVertexPitchFromType(result.VAOType);
result.IndexCount = mb->getIndexCount();
switch (mb->getPrimitiveType())
{
case scene::EPT_POINTS:
result.PrimitiveType = GL_POINTS;
break;
case scene::EPT_TRIANGLE_STRIP:
result.PrimitiveType = GL_TRIANGLE_STRIP;
break;
case scene::EPT_TRIANGLE_FAN:
result.PrimitiveType = GL_TRIANGLE_FAN;
break;
case scene::EPT_LINES:
result.PrimitiveType = GL_LINES;
break;
case scene::EPT_TRIANGLES:
result.PrimitiveType = GL_TRIANGLES;
break;
case scene::EPT_POINT_SPRITES:
case scene::EPT_LINE_LOOP:
case scene::EPT_POLYGON:
case scene::EPT_LINE_STRIP:
case scene::EPT_QUAD_STRIP:
case scene::EPT_QUADS:
assert(0 && "Unsupported primitive type");
}
for (unsigned i = 0; i < 6; i++)
result.textures[i] = mb->getMaterial().getTexture(i);
result.TextureMatrix = 0;
result.VAOType = mb->getVertexType();
return result;
}
void draw2DVertexPrimitiveList(video::ITexture *tex, const void* vertices,
u32 vertexCount, const void* indexList, u32 primitiveCount,
video::E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, video::E_INDEX_TYPE iType)
{
if (!irr_driver->isGLSL())
{
irr_driver->getVideoDriver()->draw2DVertexPrimitiveList(vertices, vertexCount, indexList, primitiveCount, vType, pType, iType);
return;
}
GLuint tmpvao, tmpvbo, tmpibo;
primitiveCount += 2;
glGenVertexArrays(1, &tmpvao);
glBindVertexArray(tmpvao);
glGenBuffers(1, &tmpvbo);
glBindBuffer(GL_ARRAY_BUFFER, tmpvbo);
glBufferData(GL_ARRAY_BUFFER, vertexCount * getVertexPitchFromType(vType), vertices, GL_STREAM_DRAW);
glGenBuffers(1, &tmpibo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, tmpibo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, primitiveCount * sizeof(u16), indexList, GL_STREAM_DRAW);
VertexUtils::bindVertexArrayAttrib(vType);
glUseProgram(UIShader::Primitive2DList::getInstance()->Program);
UIShader::Primitive2DList::getInstance()->setUniforms();
const video::SOverrideMaterial &m = irr_driver->getVideoDriver()->getOverrideMaterial();
compressTexture(tex, false);
UIShader::Primitive2DList::getInstance()->SetTextureUnits({ getTextureGLuint(tex) });
glDrawElements(GL_TRIANGLE_FAN, primitiveCount, GL_UNSIGNED_SHORT, 0);
glDeleteVertexArrays(1, &tmpvao);
glDeleteBuffers(1, &tmpvbo);
glDeleteBuffers(1, &tmpibo);
}
void setMeshColorByNormalXYZ(scene::IMesh *mesh,
const video::SColor &colorX,
const video::SColor &colorY,
const video::SColor &colorZ)
{
if (mesh == NULL)
return;
u16 mc = mesh->getMeshBufferCount();
for (u16 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
const u32 stride = getVertexPitchFromType(buf->getVertexType());
u32 vertex_count = buf->getVertexCount();
u8 *vertices = (u8 *)buf->getVertices();
for (u32 i = 0; i < vertex_count; i++) {
video::S3DVertex *vertex = (video::S3DVertex *)(vertices + i * stride);
f32 x = fabs(vertex->Normal.X);
f32 y = fabs(vertex->Normal.Y);
f32 z = fabs(vertex->Normal.Z);
if (x >= y && x >= z)
vertex->Color = colorX;
else if (y >= z)
vertex->Color = colorY;
else
vertex->Color = colorZ;
}
}
}
void rotateMeshYZby(scene::IMesh *mesh, f64 degrees)
{
u16 mc = mesh->getMeshBufferCount();
for (u16 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
const u32 stride = getVertexPitchFromType(buf->getVertexType());
u32 vertex_count = buf->getVertexCount();
u8 *vertices = (u8 *)buf->getVertices();
for (u32 i = 0; i < vertex_count; i++)
((video::S3DVertex *)(vertices + i * stride))->Pos.rotateYZBy(degrees);
}
}
void setMeshColor(scene::IMesh *mesh, const video::SColor &color)
{
if (mesh == NULL)
return;
u32 mc = mesh->getMeshBufferCount();
for (u32 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
const u32 stride = getVertexPitchFromType(buf->getVertexType());
u32 vertex_count = buf->getVertexCount();
u8 *vertices = (u8 *)buf->getVertices();
for (u32 i = 0; i < vertex_count; i++)
((video::S3DVertex *)(vertices + i * stride))->Color = color;
}
}
// ----------------------------------------------------------------------------
void draw2DVertexPrimitiveList(video::ITexture *tex, const void* vertices,
u32 vertexCount, const void* indexList,
u32 primitiveCount, video::E_VERTEX_TYPE vType,
scene::E_PRIMITIVE_TYPE pType,
video::E_INDEX_TYPE iType)
{
if (!CVS->isGLSL())
{
irr_driver->getVideoDriver()
->draw2DVertexPrimitiveList(vertices, vertexCount, indexList,
primitiveCount, vType, pType, iType);
return;
}
GLuint tmpvao, tmpvbo, tmpibo;
primitiveCount += 2;
glGenVertexArrays(1, &tmpvao);
glBindVertexArray(tmpvao);
glGenBuffers(1, &tmpvbo);
glBindBuffer(GL_ARRAY_BUFFER, tmpvbo);
glBufferData(GL_ARRAY_BUFFER, vertexCount * getVertexPitchFromType(vType),
vertices, GL_STREAM_DRAW);
glGenBuffers(1, &tmpibo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, tmpibo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, primitiveCount * sizeof(u16),
indexList, GL_STREAM_DRAW);
VertexUtils::bindVertexArrayAttrib(vType);
Primitive2DList::getInstance()->use();
Primitive2DList::getInstance()->setUniforms(1.0f);
Primitive2DList::getInstance()->setTextureUnits(tex->getOpenGLTextureName());
glDrawElements(GL_TRIANGLE_FAN, primitiveCount, GL_UNSIGNED_SHORT, 0);
glDeleteVertexArrays(1, &tmpvao);
glDeleteBuffers(1, &tmpvbo);
glDeleteBuffers(1, &tmpibo);
} // draw2DVertexPrimitiveList
GLMesh allocateMeshBuffer(scene::IMeshBuffer* mb)
{
GLMesh result = {};
if (!mb)
return result;
glBindVertexArray(0);
glGenBuffers(1, &(result.vertex_buffer));
glGenBuffers(1, &(result.index_buffer));
glBindBuffer(GL_ARRAY_BUFFER, result.vertex_buffer);
const void* vertices = mb->getVertices();
const u32 vertexCount = mb->getVertexCount();
const irr::video::E_VERTEX_TYPE vType = mb->getVertexType();
result.Stride = getVertexPitchFromType(vType);
const c8* vbuf = static_cast<const c8*>(vertices);
glBufferData(GL_ARRAY_BUFFER, vertexCount * result.Stride, vbuf, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, result.index_buffer);
const void* indices = mb->getIndices();
u32 indexCount = mb->getIndexCount();
GLenum indexSize;
switch (mb->getIndexType())
{
case irr::video::EIT_16BIT:
{
indexSize = sizeof(u16);
result.IndexType = GL_UNSIGNED_SHORT;
break;
}
case irr::video::EIT_32BIT:
{
indexSize = sizeof(u32);
result.IndexType = GL_UNSIGNED_INT;
break;
}
default:
{
assert(0 && "Wrong index size");
}
}
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indexCount * indexSize, indices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
result.IndexCount = mb->getIndexCount();
switch (mb->getPrimitiveType())
{
case scene::EPT_POINTS:
result.PrimitiveType = GL_POINTS;
break;
case scene::EPT_TRIANGLE_STRIP:
result.PrimitiveType = GL_TRIANGLE_STRIP;
break;
case scene::EPT_TRIANGLE_FAN:
result.PrimitiveType = GL_TRIANGLE_FAN;
break;
case scene::EPT_LINES:
result.PrimitiveType = GL_LINES;
break;
case scene::EPT_TRIANGLES:
result.PrimitiveType = GL_TRIANGLES;
break;
case scene::EPT_POINT_SPRITES:
case scene::EPT_LINE_LOOP:
case scene::EPT_POLYGON:
case scene::EPT_LINE_STRIP:
case scene::EPT_QUAD_STRIP:
case scene::EPT_QUADS:
assert(0 && "Unsupported primitive type");
}
ITexture *tex;
for (unsigned i = 0; i < 6; i++)
{
tex = mb->getMaterial().getTexture(i);
if (tex)
result.textures[i] = getTextureGLuint(tex);
else
result.textures[i] = 0;
}
return result;
}
GLuint createVAO(GLuint vbo, GLuint idx, video::E_VERTEX_TYPE type)
{
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
assert(vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
switch (type)
{
case video::EVT_STANDARD:
// Position
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), 0);
// Normal
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)12);
// Color
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 4, GL_UNSIGNED_BYTE, GL_TRUE, getVertexPitchFromType(type), (GLvoid*)24);
// Texcoord
glEnableVertexAttribArray(3);
glVertexAttribPointer(3, 2, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)28);
break;
case video::EVT_2TCOORDS:
// Position
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), 0);
// Normal
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)12);
// Color
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 4, GL_UNSIGNED_BYTE, GL_TRUE, getVertexPitchFromType(type), (GLvoid*)24);
// Texcoord
glEnableVertexAttribArray(3);
glVertexAttribPointer(3, 2, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)28);
// SecondTexcoord
glEnableVertexAttribArray(4);
glVertexAttribPointer(4, 2, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)36);
break;
case video::EVT_TANGENTS:
// Position
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), 0);
// Normal
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)12);
// Color
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 4, GL_UNSIGNED_BYTE, GL_TRUE, getVertexPitchFromType(type), (GLvoid*)24);
// Texcoord
glEnableVertexAttribArray(3);
glVertexAttribPointer(3, 2, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)28);
// Tangent
glEnableVertexAttribArray(5);
glVertexAttribPointer(5, 3, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)36);
// Bitangent
glEnableVertexAttribArray(6);
glVertexAttribPointer(6, 3, GL_FLOAT, GL_FALSE, getVertexPitchFromType(type), (GLvoid*)48);
break;
default:
assert(0 && "Wrong vertex type");
}
assert(idx);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, idx);
return vao;
}
void rotateMeshBy6dFacedir(scene::IMesh *mesh, int facedir)
{
int axisdir = facedir >> 2;
facedir &= 0x03;
u16 mc = mesh->getMeshBufferCount();
for (u16 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
const u32 stride = getVertexPitchFromType(buf->getVertexType());
u32 vertex_count = buf->getVertexCount();
u8 *vertices = (u8 *)buf->getVertices();
for (u32 i = 0; i < vertex_count; i++) {
video::S3DVertex *vertex = (video::S3DVertex *)(vertices + i * stride);
switch (axisdir) {
case 0:
if (facedir == 1)
vertex->Pos.rotateXZBy(-90);
else if (facedir == 2)
vertex->Pos.rotateXZBy(180);
else if (facedir == 3)
vertex->Pos.rotateXZBy(90);
break;
case 1: // z+
vertex->Pos.rotateYZBy(90);
if (facedir == 1)
vertex->Pos.rotateXYBy(90);
else if (facedir == 2)
vertex->Pos.rotateXYBy(180);
else if (facedir == 3)
vertex->Pos.rotateXYBy(-90);
break;
case 2: //z-
vertex->Pos.rotateYZBy(-90);
if (facedir == 1)
vertex->Pos.rotateXYBy(-90);
else if (facedir == 2)
vertex->Pos.rotateXYBy(180);
else if (facedir == 3)
vertex->Pos.rotateXYBy(90);
break;
case 3: //x+
vertex->Pos.rotateXYBy(-90);
if (facedir == 1)
vertex->Pos.rotateYZBy(90);
else if (facedir == 2)
vertex->Pos.rotateYZBy(180);
else if (facedir == 3)
vertex->Pos.rotateYZBy(-90);
break;
case 4: //x-
vertex->Pos.rotateXYBy(90);
if (facedir == 1)
vertex->Pos.rotateYZBy(-90);
else if (facedir == 2)
vertex->Pos.rotateYZBy(180);
else if (facedir == 3)
vertex->Pos.rotateYZBy(90);
break;
case 5:
vertex->Pos.rotateXYBy(-180);
if (facedir == 1)
vertex->Pos.rotateXZBy(90);
else if (facedir == 2)
vertex->Pos.rotateXZBy(180);
else if (facedir == 3)
vertex->Pos.rotateXZBy(-90);
break;
default:
break;
}
}
}
}
