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#include "hw_texture.hpp"
#include "glfunctions.hpp"
#include "glextensions_list.hpp"
#include "base/math.hpp"
#if defined(OMIM_OS_IPHONE)
#include "hw_texture_ios.hpp"
#endif
#define ASSERT_ID ASSERT(GetID() != -1, ())
namespace dp
{
HWTexture::HWTexture()
: m_width(0)
, m_height(0)
, m_format(UNSPECIFIED)
, m_textureID(-1)
, m_filter(gl_const::GLLinear)
{
}
void HWTexture::Create(Params const & params)
{
Create(params, nullptr);
}
void HWTexture::Create(Params const & params, ref_ptr<void> /*data*/)
{
m_width = params.m_width;
m_height = params.m_height;
m_format = params.m_format;
m_filter = params.m_filter;
#if defined(TRACK_GPU_MEM)
glConst layout;
glConst pixelType;
UnpackFormat(format, layout, pixelType);
uint32_t channelBitSize = 8;
uint32_t channelCount = 4;
if (pixelType == gl_const::GL4BitOnChannel)
channelBitSize = 4;
if (layout == gl_const::GLAlpha)
channelCount = 1;
uint32_t bitCount = channelBitSize * channelCount * m_width * m_height;
uint32_t memSize = bitCount >> 3;
dp::GPUMemTracker::Inst().AddAllocated("Texture", m_textureID, memSize);
dp::GPUMemTracker::Inst().SetUsed("Texture", m_textureID, memSize);
#endif
}
TextureFormat HWTexture::GetFormat() const
{
return m_format;
}
uint32_t HWTexture::GetWidth() const
{
ASSERT_ID;
return m_width;
}
uint32_t HWTexture::GetHeight() const
{
ASSERT_ID;
return m_height;
}
float HWTexture::GetS(uint32_t x) const
{
ASSERT_ID;
return x / (float)m_width;
}
float HWTexture::GetT(uint32_t y) const
{
ASSERT_ID;
return y / (float)m_height;
}
void HWTexture::UnpackFormat(TextureFormat format, glConst & layout, glConst & pixelType)
{
switch (format)
{
case RGBA8:
layout = gl_const::GLRGBA;
pixelType = gl_const::GL8BitOnChannel;
break;
case ALPHA:
layout = gl_const::GLAlpha;
pixelType = gl_const::GL8BitOnChannel;
break;
default:
ASSERT(false, ());
break;
}
}
void HWTexture::Bind() const
{
ASSERT_ID;
GLFunctions::glBindTexture(GetID());
}
void HWTexture::SetFilter(glConst filter)
{
if (m_filter != filter)
{
m_filter = filter;
GLFunctions::glTexParameter(gl_const::GLMinFilter, m_filter);
GLFunctions::glTexParameter(gl_const::GLMagFilter, m_filter);
}
}
int32_t HWTexture::GetID() const
{
return m_textureID;
}
OpenGLHWTexture::~OpenGLHWTexture()
{
if (m_textureID != -1)
GLFunctions::glDeleteTexture(m_textureID);
}
void OpenGLHWTexture::Create(Params const & params, ref_ptr<void> data)
{
TBase::Create(params, data);
if (!GLExtensionsList::Instance().IsSupported(GLExtensionsList::TextureNPOT))
{
m_width = my::NextPowOf2(m_width);
m_height = my::NextPowOf2(m_height);
}
m_textureID = GLFunctions::glGenTexture();
Bind();
glConst layout;
glConst pixelType;
UnpackFormat(m_format, layout, pixelType);
GLFunctions::glTexImage2D(m_width, m_height, layout, pixelType, data.get());
GLFunctions::glTexParameter(gl_const::GLMinFilter, params.m_filter);
GLFunctions::glTexParameter(gl_const::GLMagFilter, params.m_filter);
GLFunctions::glTexParameter(gl_const::GLWrapS, params.m_wrapSMode);
GLFunctions::glTexParameter(gl_const::GLWrapT, params.m_wrapTMode);
GLFunctions::glFlush();
GLFunctions::glBindTexture(0);
}
void OpenGLHWTexture::UploadData(uint32_t x, uint32_t y, uint32_t width, uint32_t height, ref_ptr<void> data)
{
ASSERT_ID;
glConst layout;
glConst pixelType;
UnpackFormat(m_format, layout, pixelType);
GLFunctions::glTexSubImage2D(x, y, width, height, layout, pixelType, data.get());
}
drape_ptr<HWTexture> OpenGLHWTextureAllocator::CreateTexture()
{
return make_unique_dp<OpenGLHWTexture>();
}
drape_ptr<HWTextureAllocator> CreateAllocator()
{
#if defined(OMIM_OS_IPHONE) && !defined(OMIM_OS_IPHONE_SIMULATOR)
return make_unique_dp<HWTextureAllocatorApple>();
#else
return make_unique_dp<OpenGLHWTextureAllocator>();
#endif
}
ref_ptr<HWTextureAllocator> GetDefaultAllocator()
{
static OpenGLHWTextureAllocator s_allocator;
return make_ref<HWTextureAllocator>(&s_allocator);
}
}
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