// Data uploads the passed data to the gpu to be placed in this buffer.
// The usage specifies how the program plans to use this buffer.
func (b Buffer) Data(data []byte, usage BufferUsage) {
var ptr unsafe.Pointer
if len(data) != 0 {
ptr = gl.Ptr(data)
}
gl.BufferData(uint32(currentBufferTarget), len(data), ptr, uint32(usage))
}
// Image3D uploads a 3D texture to the GPU.
func (t Texture) Image3D(level, width, height, depth int, format TextureFormat, ty Type, pix []byte) {
if t != currentTexture {
panic("texture not bound")
}
var ptr unsafe.Pointer
if len(pix) != 0 {
ptr = gl.Ptr(pix)
}
gl.TexImage3D(uint32(currentTextureTarget), int32(level), int32(format), int32(width), int32(height), int32(depth), int32(0), uint32(format), uint32(ty), ptr)
}
// InfoLog returns the log from compiling the shader.
func (s Shader) InfoLog() string {
l := s.Parameter(InfoLogLength)
var ptr unsafe.Pointer
var buf []byte
if l > 0 {
buf = make([]byte, l)
ptr = gl.Ptr(buf)
}
gl.GetShaderInfoLog(uint32(s), int32(l), nil, (*uint8)(ptr))
return strings.TrimRight(string(buf), "\x00")
}
// SubImage2D updates a region of a 2D texture.
func (t Texture) SubImage2D(level int, x, y, width, height int, format TextureFormat, ty Type, pix []byte) {
if t != currentTexture {
panic("texture not bound")
}
gl.TexSubImage2D(
uint32(currentTextureTarget),
int32(level),
int32(x),
int32(y),
int32(width),
int32(height),
uint32(format),
uint32(ty),
gl.Ptr(pix),
)
}
// Image2DEx uploads a 2D texture to the GPU.
func (t Texture) Image2DEx(level, width, height int, internalFormat, format TextureFormat, ty Type, pix []byte) {
if t != currentTexture {
panic("texture not bound")
}
var ptr unsafe.Pointer
if pix != nil {
ptr = gl.Ptr(pix)
}
gl.TexImage2D(
uint32(currentTextureTarget),
int32(level),
int32(internalFormat),
int32(width),
int32(height),
0,
uint32(format),
uint32(ty),
ptr,
)
}
func (t Texture) Get(level int, format TextureFormat, ty Type, pixels []byte) {
if t != currentTexture {
panic("texture not bound")
}
gl.GetTexImage(uint32(currentTextureTarget), int32(level), uint32(format), uint32(ty), gl.Ptr(pixels))
}
func DrawBuffers(bufs []Attachment) {
gl.DrawBuffers(int32(len(bufs)), (*uint32)(gl.Ptr(bufs)))
}
func ClearBuffer(buffer TargetBuffer, drawBuffer int, values []float32) {
gl.ClearBufferfv(uint32(buffer), int32(drawBuffer), (*float32)(gl.Ptr(values)))
}
func MultiDrawElements(ty DrawType, count []int32, dty Type, offset []uintptr) {
gl.MultiDrawElements(uint32(ty), (*int32)(gl.Ptr(count)), uint32(dty), (*uintptr)(gl.Ptr(offset)), int32(len(count)))
}
// Matrix4 sets the value of the uniform to the passed matrix.
func (u Uniform) Matrix4Multi(matrix []mgl32.Mat4) {
gl.UniformMatrix4fv(int32(u), int32(len(matrix)), false, (*float32)(gl.Ptr(matrix)))
}
func (u Uniform) FloatMutliRaw(a interface{}, l int) {
gl.Uniform4fv(int32(u), int32(l), (*float32)(gl.Ptr(a)))
}
func (u Uniform) FloatMutli(a []float32) {
gl.Uniform4fv(int32(u), int32(len(a)), (*float32)(gl.Ptr(a)))
}
// IntV sets the value of the uniform to the passed integer array.
func (u Uniform) IntV(v ...int) {
gl.Uniform1iv(int32(u), int32(len(v)), (*int32)(gl.Ptr(v)))
}