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#include "drape/uniform_value.hpp"
#include "drape/glfunctions.hpp"
#include "base/assert.hpp"
#include "std/cstring.hpp"
namespace dp
{
namespace
{
template<typename T>
void CopyValues(T * dstPointer, T * values, size_t valuesCount)
{
for (size_t i = 0; i < valuesCount; ++i)
dstPointer[i] = values[i];
}
void ApplyInt(int8_t location, int32_t const * pointer, size_t componentCount)
{
switch (componentCount)
{
case 1:
GLFunctions::glUniformValuei(location, pointer[0]);
break;
case 2:
GLFunctions::glUniformValuei(location, pointer[0], pointer[1]);
break;
case 3:
GLFunctions::glUniformValuei(location, pointer[0], pointer[1], pointer[2]);
break;
case 4:
GLFunctions::glUniformValuei(location, pointer[0], pointer[1], pointer[2], pointer[3]);
break;
default:
ASSERT(false, ());
}
}
void ApplyFloat(int8_t location, float const * pointer, size_t componentCount)
{
switch (componentCount)
{
case 1:
GLFunctions::glUniformValuef(location, pointer[0]);
break;
case 2:
GLFunctions::glUniformValuef(location, pointer[0], pointer[1]);
break;
case 3:
GLFunctions::glUniformValuef(location, pointer[0], pointer[1], pointer[2]);
break;
case 4:
GLFunctions::glUniformValuef(location, pointer[0], pointer[1], pointer[2], pointer[3]);
break;
default:
ASSERT(false, ());
}
}
void ApplyMatrix(uint8_t location, float const * matrix)
{
GLFunctions::glUniformMatrix4x4Value(location, matrix);
}
} // namespace
UniformValue::UniformValue(string const & name, int32_t v)
: m_name(name)
, m_type(Int)
, m_componentCount(1)
{
Allocate(sizeof(int32_t));
SetIntValue(v);
}
UniformValue::UniformValue(string const & name, int32_t v1, int32_t v2)
: m_name(name)
, m_type(Int)
, m_componentCount(2)
{
Allocate(2 * sizeof(int32_t));
SetIntValue(v1, v2);
}
UniformValue::UniformValue(string const & name, int32_t v1, int32_t v2, int32_t v3)
: m_name(name)
, m_type(Int)
, m_componentCount(3)
{
Allocate(3 * sizeof(int32_t));
SetIntValue(v1, v2, v3);
}
UniformValue::UniformValue(string const & name, int32_t v1, int32_t v2, int32_t v3, int32_t v4)
: m_name(name)
, m_type(Int)
, m_componentCount(4)
{
Allocate(4 * sizeof(int32_t));
SetIntValue(v1, v2, v3, v4);
}
UniformValue::UniformValue(string const & name, float v)
: m_name(name)
, m_type(Float)
, m_componentCount(1)
{
Allocate(sizeof(float));
SetFloatValue(v);
}
UniformValue::UniformValue(string const & name, float v1, float v2)
: m_name(name)
, m_type(Float)
, m_componentCount(2)
{
Allocate(2 * sizeof(float));
SetFloatValue(v1, v2);
}
UniformValue::UniformValue(string const & name, float v1, float v2, float v3)
: m_name(name)
, m_type(Float)
, m_componentCount(3)
{
Allocate(3 * sizeof(float));
SetFloatValue(v1, v2, v3);
}
UniformValue::UniformValue(string const & name, float v1, float v2, float v3, float v4)
: m_name(name)
, m_type(Float)
, m_componentCount(4)
{
Allocate(4 * sizeof(float));
SetFloatValue(v1, v2, v3, v4);
}
UniformValue::UniformValue(string const & name, const float * matrixValue)
: m_name(name)
, m_type(Matrix4x4)
, m_componentCount(16)
{
Allocate(4 * 4 * sizeof(float));
SetMatrix4x4Value(matrixValue);
}
string const & UniformValue::GetName() const
{
return m_name;
}
UniformValue::Type UniformValue::GetType() const
{
return m_type;
}
size_t UniformValue::GetComponentCount() const
{
return m_componentCount;
}
void UniformValue::SetIntValue(int32_t v)
{
ASSERT(m_type == Int, ());
ASSERT(m_componentCount == 1, ());
CopyValues(CastMemory<int32_t>(), &v, m_componentCount);
}
void UniformValue::SetIntValue(int32_t v1, int32_t v2)
{
ASSERT(m_type == Int, ());
ASSERT(m_componentCount == 2, ());
int v[2] = { v1, v2 };
CopyValues(CastMemory<int32_t>(), v, m_componentCount);
}
void UniformValue::SetIntValue(int32_t v1, int32_t v2, int32_t v3)
{
ASSERT(m_type == Int, ());
ASSERT(m_componentCount == 3, ());
int v[3] = { v1, v2, v3 };
CopyValues(CastMemory<int32_t>(), v, m_componentCount);
}
void UniformValue::SetIntValue(int32_t v1, int32_t v2, int32_t v3, int32_t v4)
{
ASSERT(m_type == Int, ());
ASSERT(m_componentCount == 4, ());
int v[4] = { v1, v2, v3, v4 };
CopyValues(CastMemory<int32_t>(), v, m_componentCount);
}
void UniformValue::SetFloatValue(float v)
{
ASSERT(m_type == Float, ());
ASSERT(m_componentCount == 1, ());
CopyValues(CastMemory<float>(), &v, m_componentCount);
}
void UniformValue::SetFloatValue(float v1, float v2)
{
ASSERT(m_type == Float, ());
ASSERT(m_componentCount == 2, ());
float v[2] = { v1, v2 };
CopyValues(CastMemory<float>(), v, m_componentCount);
}
void UniformValue::SetFloatValue(float v1, float v2, float v3)
{
ASSERT(m_type == Float, ());
ASSERT(m_componentCount == 3, ());
float v[3] = { v1, v2, v3 };
CopyValues(CastMemory<float>(), v, m_componentCount);
}
void UniformValue::SetFloatValue(float v1, float v2, float v3, float v4)
{
ASSERT(m_type == Float, ());
ASSERT(m_componentCount == 4, ());
float v[4] = { v1, v2, v3, v4 };
CopyValues(CastMemory<float>(), v, m_componentCount);
}
void UniformValue::SetMatrix4x4Value(float const * matrixValue)
{
ASSERT(m_type == Matrix4x4, ());
ASSERT(m_componentCount == 16, ());
memcpy(CastMemory<float>(), matrixValue, 4 * 4 * sizeof(float));
}
void UniformValue::Apply(ref_ptr<GpuProgram> program) const
{
int8_t location = program->GetUniformLocation(m_name);
if (location == -1)
return;
switch (m_type)
{
case Int:
ApplyInt(location, CastMemory<int32_t>(), m_componentCount);
break;
case Float:
ApplyFloat(location, CastMemory<float>(), m_componentCount);
break;
case Matrix4x4:
ApplyMatrix(location, CastMemory<float>());
break;
default:
ASSERT(false, ());
}
}
void UniformValue::Allocate(size_t byteCount)
{
m_values.reset(new uint8_t[byteCount]);
}
} // namespace dp
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