void Texture::init(const void *data, GLint dataFormat, const Format &format)
{
m_impl->m_do_not_dispose = false;
m_impl->m_datatype = format.m_datatype;
if(!m_impl->m_texture_id)
{
glGenTextures(1, &m_impl->m_texture_id);
glBindTexture(m_impl->m_target, m_impl->m_texture_id);
glTexParameteri(m_impl->m_target, GL_TEXTURE_WRAP_S, format.m_wrap_s);
glTexParameteri(m_impl->m_target, GL_TEXTURE_WRAP_T, format.m_wrap_t);
glTexParameteri(m_impl->m_target, GL_TEXTURE_MIN_FILTER, format.m_min_filter);
glTexParameteri(m_impl->m_target, GL_TEXTURE_MAG_FILTER, format.m_mag_filter);
}
else{ glBindTexture(m_impl->m_target, m_impl->m_texture_id); }
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
//#if ! defined(KINSKI_GLES)
// glPixelStorei(GL_UNPACK_ROW_LENGTH, unpackRowLength);
//#endif
if(m_impl->m_target == GL_TEXTURE_2D)
{
glTexImage2D(m_impl->m_target, 0, m_impl->m_internal_format,
m_impl->m_width, m_impl->m_height, 0, dataFormat,
m_impl->m_datatype, data);
}
#if !defined(KINSKI_GLES)
else if (m_impl->m_target == GL_TEXTURE_3D ||
m_impl->m_target == GL_TEXTURE_2D_ARRAY)
{
glTexImage3D(m_impl->m_target, 0, m_impl->m_internal_format, m_impl->m_width, m_impl->m_height,
m_impl->m_depth, 0, dataFormat, m_impl->m_datatype, data);
}
#endif
#if ! defined(KINSKI_GLES)
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
#endif
if(format.m_mipmapping){ glGenerateMipmap(m_impl->m_target); }
#ifndef KINSKI_GLES
if(dataFormat != GL_RGB && dataFormat != GL_RGBA && dataFormat != GL_BGRA)
{
GLint swizzleMask[] = {(GLint)(dataFormat), (GLint)(dataFormat), (GLint)(dataFormat),
GL_ONE};
glTexParameteriv(m_impl->m_target, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask);
}
#endif
KINSKI_CHECK_GL_ERRORS();
}
void Fbo::resolve_textures() const
{
if(!m_impl->m_needs_resolve){ return; }
#if ! defined(KINSKI_GLES)
// if this FBO is multisampled, resolve it, so it can be displayed
if(m_impl->m_resolve_fbo_id)
{
//SaveFramebufferBinding saveFboBinding;
glBindFramebuffer(GL_READ_FRAMEBUFFER, m_impl->m_id);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_impl->m_resolve_fbo_id);
for(size_t c = 0; c < m_impl->m_color_textures.size(); ++c)
{
glDrawBuffer(GL_COLOR_ATTACHMENT0 + c);
glReadBuffer(GL_COLOR_ATTACHMENT0 + c);
GLbitfield bitfield = GL_COLOR_BUFFER_BIT;
if(m_impl->m_depth_texture && m_impl->m_depth_texture.id())
bitfield |= GL_DEPTH_BUFFER_BIT;
glBlitFramebuffer(0, 0, m_impl->m_width, m_impl->m_height, 0, 0, m_impl->m_width,
m_impl->m_height, bitfield, GL_NEAREST);
KINSKI_CHECK_GL_ERRORS();
}
// restore the draw buffers to the default for the antialiased (non-resolve) framebuffer
vector<GLenum> drawBuffers;
for(size_t c = 0; c < m_impl->m_color_textures.size(); ++c)
drawBuffers.push_back(GL_COLOR_ATTACHMENT0 + c);
glBindFramebuffer(GL_FRAMEBUFFER, m_impl->m_id);
glDrawBuffers(drawBuffers.size(), &drawBuffers[0]);
KINSKI_CHECK_GL_ERRORS();
}
#endif
m_impl->m_needs_resolve = false;
}
void Material::update_uniforms()
{
#if !defined(KINSKI_GLES)
if(!m_uniform_buffer){ m_uniform_buffer = gl::Buffer(GL_UNIFORM_BUFFER, GL_DYNAMIC_DRAW); }
struct material_struct_std140
{
vec4 diffuse;
vec4 ambient;
vec4 specular;
vec4 emission;
vec4 point_vals;
float shinyness;
uint32_t pad[3];
};
if(m_dirty_uniform_buffer)
{
material_struct_std140 m;
m.diffuse = m_diffuse;
m.ambient = m_ambient;
m.specular = m_specular;
m.emission = m_emission;
m.point_vals[0] = m_point_size;
m.point_vals[1] = m_point_attenuation.constant;
m.point_vals[2] = m_point_attenuation.linear;
m.point_vals[3] = m_point_attenuation.quadratic;
m.shinyness = m_shinyness;
m_uniform_buffer.set_data(&m, sizeof(m));
m_dirty_uniform_buffer = false;
}
glBindBufferBase(GL_UNIFORM_BUFFER, 0, m_uniform_buffer.id());
#else
if(m_dirty_uniform_buffer)
{
m_uniforms["u_material.diffuse"] = m_diffuse;
m_uniforms["u_material.ambient"] = m_ambient;
m_uniforms["u_material.specular"] = m_specular;
m_uniforms["u_material.emmission"] = m_emission;
m_uniforms["u_material.shinyness"] = m_shinyness;
m_uniforms["u_material.point_vals"] = vec4(m_point_size,
m_point_attenuation.constant,
m_point_attenuation.linear,
m_point_attenuation.quadratic);
m_dirty_uniform_buffer = false;
}
#endif
// if(m_dirty_uniform_buffer)
{
// set all other uniform values
for (auto it = uniforms().begin(); it != uniforms().end(); ++it)
{
boost::apply_visitor(InsertUniformVisitor(shader(), it->first), it->second);
KINSKI_CHECK_GL_ERRORS();
}
}
}
Texture create_texture_from_image(const ImagePtr& the_img, bool mipmap,
bool compress, GLfloat anisotropic_filter_lvl)
{
Texture ret;
if(!the_img){ return ret; }
GLenum format = 0, internal_format = 0;
switch(the_img->bytes_per_pixel)
{
#ifdef KINSKI_GLES
case 1:
internal_format = format = GL_LUMINANCE;
break;
case 2:
internal_format = format = GL_LUMINANCE_ALPHA;
break;
case 3:
internal_format = format = GL_RGB;
// needs precompressed image and call to glCompressedTexImage2D
// internal_format = compress ? GL_ETC1_RGB8_OES : GL_RGB;
break;
case 4:
internal_format = format = GL_RGBA;
default:
break;
#else
case 1:
format = GL_RED;
internal_format = compress? GL_COMPRESSED_RED_RGTC1 : GL_RGBA;
break;
case 2:
format = GL_RG;
internal_format = compress? GL_COMPRESSED_RG_RGTC2 : GL_RGBA;
break;
case 3:
format = GL_RGB;
internal_format = compress? GL_COMPRESSED_RGB_S3TC_DXT1_EXT : GL_RGBA;
break;
case 4:
format = GL_RGBA;
internal_format = compress? GL_COMPRESSED_RGBA_S3TC_DXT5_EXT : GL_RGBA;
default:
break;
#endif
}
Texture::Format fmt;
fmt.set_internal_format(internal_format);
if(mipmap)
{
fmt.set_mipmapping();
fmt.set_min_filter(GL_LINEAR_MIPMAP_NEAREST);
}
uint8_t *data = the_img->data;
#if !defined(KINSKI_GLES)
gl::Buffer pixel_buf;
pixel_buf.set_data(the_img->data, the_img->num_bytes());
pixel_buf.bind(GL_PIXEL_UNPACK_BUFFER);
data = nullptr;
#endif
ret = Texture(data, format, the_img->width, the_img->height, fmt);
ret.set_flipped();
KINSKI_CHECK_GL_ERRORS();
ret.set_anisotropic_filter(anisotropic_filter_lvl);
return ret;
}
