bool SpriteSheet::Write(const std::string& base_name)
{
std::string file_name=base_name+".png";
if (WriteTexture(file_name)) {
file_name=base_name+".tat";
if (WriteTextureAtlas(file_name)) {
return true;
}
}
return false;
}
void BlurCubemap::DoTask(const Texture& inputTex, Texture& outputTex)
{
if (!inputTex.m_cubemap)
{
printf("Error: For this task required cubmap.\n");
return;
}
float s = m_blurRadius / sqrt(inputTex.m_width * inputTex.m_height);
int size = outputTex.m_width*outputTex.m_height;
for(int k = 0; k <6; ++k)
{
outputTex.m_faces[k].m_buff.resize(size);
for (int i = 0;i<outputTex.m_height;i++)
{
for (int j = 0;j<outputTex.m_width;j++)
{
double2 uv = GetUVFromIndices(outputTex.m_width, outputTex.m_height, i, j);
double3 v = uv2cube(uv, k);
fpixel p(0.0,0.0,0.0);
int iterationCount = m_blurQuality;
for (int itx = 0; itx < iterationCount; ++itx)
{
for (int ity = 0; ity < iterationCount; ++ity)
{
for (int itz = 0; itz < iterationCount; ++itz)
{
float x = fastNormal(itx * (1.0/iterationCount), (itx+1) * (1.0/iterationCount));
float y = fastNormal(ity * (1.0/iterationCount), (ity+1) * (1.0/iterationCount));
float z = fastNormal(itz * (1.0/iterationCount), (itz+1) * (1.0/iterationCount));
double3 noise(x, y, z);
double3 v_ = v;
v_ += noise * s;
v_.Normalize();
int face = 0;
double2 uv_ = cube2uv(v_, &face);
p += FetchTexture(inputTex, uv_, face);
}
}
}
p /= iterationCount;
p /= iterationCount;
p /= iterationCount;
//p = p * (k!=5) + fpixel(((float)i)/outputTex.m_width,((float)j)/outputTex.m_width,1.0) * (k==5);
WriteTexture(outputTex, uv, k, p);
}
}
}
outputTex.m_cubemap = true;
}
static std::string GenFragmentShader( shaderStage_t& stage,
std::vector< std::string >& uniforms )
{
size_t fragTransferOffset = 2;
size_t fragUnifOffset = 3;
// Fragment shader....
// Unspecified alphaGen implies a default 1.0 alpha channel
std::vector< std::string > fragmentSrc =
{
DeclPrecision(),
"const float gamma = 1.0 / 2.2;",
DeclTransferVar( "frag_Tex", "vec2", "in" ),
#ifdef G_USE_GL_CORE
DeclTransferVar( "fragment", "vec4", "out" ),
#endif
"void main(void) {"
};
// Add our base image data
std::initializer_list<std::string> data =
{
"uniform sampler2D sampler0;",
"uniform vec4 imageTransform;",
"uniform vec2 imageScaleRatio;",
"vec2 applyTransform(in vec2 coords) {",
"\treturn coords * imageTransform.zw * imageScaleRatio + imageTransform.xy;",
"}"
};
fragmentSrc.insert( fragmentSrc.begin() + fragUnifOffset, data );
fragmentSrc.push_back( "\tvec2 st = frag_Tex;" );
if ( UsesColor( stage ) )
{
fragmentSrc.insert( fragmentSrc.begin() + fragTransferOffset++,
DeclTransferVar( "frag_Color", "vec4", "in" ) );
}
for ( const effect_t& op: stage.effects )
{
// Modify the texture coordinate as necessary before we write to the texture
if ( op.name == "tcModTurb" )
{
fragmentSrc.insert( fragmentSrc.begin() + fragUnifOffset,
"uniform float tcModTurb;" );
fragmentSrc.push_back( "\tst *= tcModTurb;" );
uniforms.push_back( "tcModTurb" );
}
else if ( op.name == "tcModScroll" )
{
fragmentSrc.insert( fragmentSrc.begin() + fragUnifOffset,
"uniform vec4 tcModScroll;" );
fragmentSrc.push_back( "\tst += tcModScroll.xy * tcModScroll.zw;" );
uniforms.push_back( "tcModScroll" );
}
else if ( op.name == "tcModRotate" )
{
fragmentSrc.insert( fragmentSrc.begin() + fragUnifOffset,
"uniform mat2 texRotate;" );
fragmentSrc.insert( fragmentSrc.begin() + fragUnifOffset,
"uniform vec2 texCenter;" );
fragmentSrc.push_back( "\tst += texRotate * ( frag_Tex - texCenter );" );
uniforms.push_back( "texRotate" );
uniforms.push_back( "texCenter" );
}
else if ( op.name == "tcModScale" )
{
fragmentSrc.insert( fragmentSrc.begin() + fragUnifOffset,
"uniform mat2 tcModScale;" );
fragmentSrc.push_back( "\tst = tcModScale * st;" );
uniforms.push_back( "tcModScale" );
}
}
switch ( stage.alphaFunc )
{
case ALPHA_FUNC_UNDEFINED:
WriteTexture( fragmentSrc, stage, nullptr );
break;
case ALPHA_FUNC_GEQUAL_128:
WriteTexture( fragmentSrc, stage, "color.a < 0.5" );
break;
case ALPHA_FUNC_GTHAN_0:
WriteTexture( fragmentSrc, stage, "color.a == 0" );
break;
case ALPHA_FUNC_LTHAN_128:
WriteTexture( fragmentSrc, stage, "color.a >= 0.5" );
break;
}
return JoinLines( fragmentSrc );
}
