unsigned int GLTexture::_Load(unsigned char* data)
{
glGenTextures(1, &glTex);
glBindTexture(GL_TEXTURE_2D, glTex);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
if(!data)
glTexImage2D(GetGLType(), 0, 4, width, height, 0, GetGLFormat(), GL_UNSIGNED_BYTE, data);
else
gluBuild2DMipmaps(GetGLType(), 4, width, height, GetGLFormat(), GL_UNSIGNED_BYTE, data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
return true;
}
/*virtual*/ void GL2RenderTarget::Initialize(
const SRenderTargetParams& Params) {
XTRACE_FUNCTION;
m_Width = Params.Width;
m_Height = Params.Height;
#ifdef PANDORA
if ((m_Height == 480) && (m_Width = 800))
{
m_Width = 512;
m_Height = 256;
}
#endif
#ifdef HAVE_GLES
m_Width = NPOT(m_Width);
m_Height = NPOT(m_Height);
glGenFramebuffers(1, &m_FrameBufferObject);
ASSERT(m_FrameBufferObject != 0);
glBindFramebuffer(GL_FRAMEBUFFER, m_FrameBufferObject);
if (Params.ColorFormat != ERTF_None) {
glGenTextures(1, &m_ColorTextureObject);
ASSERT(m_ColorTextureObject != 0);
glBindTexture(GL_TEXTURE_2D, m_ColorTextureObject);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, m_Width, m_Height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
m_ColorTexture = new GL2Texture(m_ColorTextureObject);
glBindTexture(GL_TEXTURE_2D, 0); // Unbind ?
}
if (Params.DepthStencilFormat != ERTF_None) {
glGenRenderbuffers(1, &m_DepthStencilRenderBufferObject);
ASSERT(m_DepthStencilRenderBufferObject != 0);
glBindRenderbuffer(GL_RENDERBUFFER, m_DepthStencilRenderBufferObject);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, m_Width,
m_Height);
}
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
m_ColorTextureObject, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER,
m_DepthStencilRenderBufferObject);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
GL_RENDERBUFFER,
m_DepthStencilRenderBufferObject);
const GLenum FrameBufferStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
ASSERT(FrameBufferStatus == GL_FRAMEBUFFER_COMPLETE);
Unused(FrameBufferStatus);
#else
// FBOs were supported in GL 2.1 only by extension, but some newer drivers
// don't still support that extension. Use whichever is available.
ASSERT(GLEW_EXT_framebuffer_object || GLEW_ARB_framebuffer_object);
if (GLEW_ARB_framebuffer_object) {
glGenFramebuffers(1, &m_FrameBufferObject);
ASSERT(m_FrameBufferObject != 0);
glBindFramebuffer(GL_FRAMEBUFFER, m_FrameBufferObject);
} else if (GLEW_EXT_framebuffer_object) {
glGenFramebuffersEXT(1, &m_FrameBufferObject);
ASSERT(m_FrameBufferObject != 0);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_FrameBufferObject);
}
if (Params.ColorFormat != ERTF_None) {
glGenTextures(1, &m_ColorTextureObject);
ASSERT(m_ColorTextureObject != 0);
glBindTexture(GL_TEXTURE_2D, m_ColorTextureObject);
const GLenum ColorFormat = GetGLFormat(Params.ColorFormat);
// The image format parameters don't necessarily match the color format,
// but it doesn't matter because we're not providing image data here.
glTexImage2D(GL_TEXTURE_2D, 0, ColorFormat, Params.Width, Params.Height, 0,
GL_BGRA, GL_UNSIGNED_BYTE, nullptr);
m_ColorTexture = new GL2Texture(m_ColorTextureObject);
}
if (Params.DepthStencilFormat != ERTF_None) {
if (GLEW_ARB_framebuffer_object) {
glGenRenderbuffers(1, &m_DepthStencilRenderBufferObject);
ASSERT(m_DepthStencilRenderBufferObject != 0);
glBindRenderbuffer(GL_RENDERBUFFER, m_DepthStencilRenderBufferObject);
const GLenum DepthStencilFormat = GetGLFormat(Params.DepthStencilFormat);
glRenderbufferStorage(GL_RENDERBUFFER, DepthStencilFormat, Params.Width,
Params.Height);
} else if (GLEW_EXT_framebuffer_object) {
glGenRenderbuffersEXT(1, &m_DepthStencilRenderBufferObject);
ASSERT(m_DepthStencilRenderBufferObject != 0);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT,
m_DepthStencilRenderBufferObject);
const GLenum DepthStencilFormat = GetGLFormat(Params.DepthStencilFormat);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, DepthStencilFormat,
Params.Width, Params.Height);
}
}
if (GLEW_ARB_framebuffer_object) {
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
m_ColorTextureObject, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
GL_RENDERBUFFER,
m_DepthStencilRenderBufferObject);
const GLenum FrameBufferStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
ASSERT(FrameBufferStatus == GL_FRAMEBUFFER_COMPLETE);
Unused(FrameBufferStatus);
} else if (GLEW_EXT_framebuffer_object) {
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, m_ColorTextureObject, 0);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT,
m_DepthStencilRenderBufferObject);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT,
m_DepthStencilRenderBufferObject);
const GLenum FrameBufferStatus =
glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
ASSERT(FrameBufferStatus == GL_FRAMEBUFFER_COMPLETE_EXT);
Unused(FrameBufferStatus);
}
#endif //HAVE_GLES
}
