UnrealXR/raylib-go
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Add api and example for mesh drawing.

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This commit is contained in:
jackji 2021-06-22 21:37:46 +08:00
parent ace572fead
commit 15ed58856b
7 changed files with 510 additions and 18 deletions
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10
raylib/models.go
View file

@ -400,6 +400,16 @@ func DrawBillboardRec(camera Camera, texture Texture2D, sourceRec Rectangle, cen
C.DrawBillboardRec(*ccamera, *ctexture, *csourceRec, *ccenter, *csize, *ctint)
}
// DrawMesh - Draw a single mesh
func DrawMesh(mesh Mesh, material Material, transform Matrix) {
C.DrawMesh(*mesh.cptr(), *material.cptr(), *transform.cptr())
}
// DrawMeshInstanced - Draw mesh with instanced rendering
func DrawMeshInstanced(mesh Mesh, material Material, transforms []Matrix, instances int) {
C.DrawMeshInstanced(*mesh.cptr(), *material.cptr(), transforms[0].cptr(), C.int(instances))
}
// GetMeshBoundingBox - Compute mesh bounding box limits
func GetMeshBoundingBox(mesh Mesh) BoundingBox {
cmesh := mesh.cptr()

23
raylib/raylib.go
View file

@ -716,8 +716,10 @@ const (
)
// Shader location point type
type LocationPointType int32
const (
LocVertexPosition = iota
LocVertexPosition LocationPointType = iota
LocVertexTexcoord01
LocVertexTexcoord02
LocVertexNormal
@ -746,8 +748,10 @@ const (
)
// Material map type
type MaterialMapType int32
const (
MapAlbedo = iota
MapAlbedo MaterialMapType = iota
MapMetalness
MapNormal
MapRoughness
@ -830,6 +834,11 @@ func newMaterialFromPointer(ptr unsafe.Pointer) Material {
return *(*Material)(ptr)
}
// GetMap - Get pointer to MaterialMap by map type
func (mt Material) GetMap(index MaterialMapType) *MaterialMap {
return (*MaterialMap)(unsafe.Pointer(uintptr(unsafe.Pointer(mt.Maps)) + uintptr(index)*uintptr(unsafe.Sizeof(MaterialMap{}))))
}
// MaterialMap type
type MaterialMap struct {
// Texture
@ -920,6 +929,16 @@ func newShaderFromPointer(ptr unsafe.Pointer) Shader {
return *(*Shader)(ptr)
}
// GetLocation - Get shader value's location
func (sh Shader) GetLocation(index LocationPointType) int32 {
return *(*int32)(unsafe.Pointer(uintptr(unsafe.Pointer(sh.Locs)) + uintptr(index*4)))
}
// UpdateLocation - Update shader value's location
func (sh Shader) UpdateLocation(index LocationPointType, loc int32) {
*(*int32)(unsafe.Pointer(uintptr(unsafe.Pointer(sh.Locs)) + uintptr(index*4))) = loc
}
// CharInfo - Font character info
type CharInfo struct {
// Character value (Unicode)

32
raylib/raymath.go
View file

@ -673,22 +673,22 @@ func MatrixScale(x, y, z float32) Matrix {
func MatrixMultiply(left, right Matrix) Matrix {
var result Matrix
result.M0 = right.M0*left.M0 + right.M1*left.M4 + right.M2*left.M8 + right.M3*left.M12
result.M1 = right.M0*left.M1 + right.M1*left.M5 + right.M2*left.M9 + right.M3*left.M13
result.M2 = right.M0*left.M2 + right.M1*left.M6 + right.M2*left.M10 + right.M3*left.M14
result.M3 = right.M0*left.M3 + right.M1*left.M7 + right.M2*left.M11 + right.M3*left.M15
result.M4 = right.M4*left.M0 + right.M5*left.M4 + right.M6*left.M8 + right.M7*left.M12
result.M5 = right.M4*left.M1 + right.M5*left.M5 + right.M6*left.M9 + right.M7*left.M13
result.M6 = right.M4*left.M2 + right.M5*left.M6 + right.M6*left.M10 + right.M7*left.M14
result.M7 = right.M4*left.M3 + right.M5*left.M7 + right.M6*left.M11 + right.M7*left.M15
result.M8 = right.M8*left.M0 + right.M9*left.M4 + right.M10*left.M8 + right.M11*left.M12
result.M9 = right.M8*left.M1 + right.M9*left.M5 + right.M10*left.M9 + right.M11*left.M13
result.M10 = right.M8*left.M2 + right.M9*left.M6 + right.M10*left.M10 + right.M11*left.M14
result.M11 = right.M8*left.M3 + right.M9*left.M7 + right.M10*left.M11 + right.M11*left.M15
result.M12 = right.M12*left.M0 + right.M13*left.M4 + right.M14*left.M8 + right.M15*left.M12
result.M13 = right.M12*left.M1 + right.M13*left.M5 + right.M14*left.M9 + right.M15*left.M13
result.M14 = right.M12*left.M2 + right.M13*left.M6 + right.M14*left.M10 + right.M15*left.M14
result.M15 = right.M12*left.M3 + right.M13*left.M7 + right.M14*left.M11 + right.M15*left.M15
result.M0 = left.M0*right.M0 + left.M1*right.M4 + left.M2*right.M8 + left.M3*right.M12
result.M1 = left.M0*right.M1 + left.M1*right.M5 + left.M2*right.M9 + left.M3*right.M13
result.M2 = left.M0*right.M2 + left.M1*right.M6 + left.M2*right.M10 + left.M3*right.M14
result.M3 = left.M0*right.M3 + left.M1*right.M7 + left.M2*right.M11 + left.M3*right.M15
result.M4 = left.M4*right.M0 + left.M5*right.M4 + left.M6*right.M8 + left.M7*right.M12
result.M5 = left.M4*right.M1 + left.M5*right.M5 + left.M6*right.M9 + left.M7*right.M13
result.M6 = left.M4*right.M2 + left.M5*right.M6 + left.M6*right.M10 + left.M7*right.M14
result.M7 = left.M4*right.M3 + left.M5*right.M7 + left.M6*right.M11 + left.M7*right.M15
result.M8 = left.M8*right.M0 + left.M9*right.M4 + left.M10*right.M8 + left.M11*right.M12
result.M9 = left.M8*right.M1 + left.M9*right.M5 + left.M10*right.M9 + left.M11*right.M13
result.M10 = left.M8*right.M2 + left.M9*right.M6 + left.M10*right.M10 + left.M11*right.M14
result.M11 = left.M8*right.M3 + left.M9*right.M7 + left.M10*right.M11 + left.M11*right.M15
result.M12 = left.M12*right.M0 + left.M13*right.M4 + left.M14*right.M8 + left.M15*right.M12
result.M13 = left.M12*right.M1 + left.M13*right.M5 + left.M14*right.M9 + left.M15*right.M13
result.M14 = left.M12*right.M2 + left.M13*right.M6 + left.M14*right.M10 + left.M15*right.M14
result.M15 = left.M12*right.M3 + left.M13*right.M7 + left.M14*right.M11 + left.M15*right.M15
return result
}