Method LoadSprites

PanzerChasm/client/map_drawer_gl.cpp:705–760

}

void MapDrawerGL::LoadSprites( const std::vector<ObjSprite>& sprites, std::vector<GLuint>& out_textures )
{
	const Palette& palette= game_resources_->palette;

	std::vector<unsigned char> data_rgba;

	out_textures.resize( sprites.size() );
	glGenTextures( out_textures.size(), out_textures.data() );
	for( unsigned int i= 0u; i < out_textures.size(); i++ )
	{
		const ObjSprite& sprite= sprites[i];

		data_rgba.clear();
		data_rgba.resize( sprite.data.size() * 4u, 0u );

		for( unsigned int j= 0u; j < sprite.data.size(); j++ )
		{
			const unsigned char color_index= sprite.data[j];

			unsigned char* const dst= data_rgba.data() + 4u * j;

			dst[0]= palette[ 3u * color_index + 0u ];
			dst[1]= palette[ 3u * color_index + 1u ];
			dst[2]= palette[ 3u * color_index + 2u ];
			dst[3]= color_index == 255u ? 0u : 255u;
		}

		if( filter_textures_ )
		{
			for( unsigned int j= 0u; j < sprite.frame_count; j++ )
				FillAlphaTexelsColorRGBA(
					sprite.size[0], sprite.size[1],
					data_rgba.data() + 4u * sprite.size[0] * sprite.size[1] * j );
		}

		glBindTexture( GL_TEXTURE_2D_ARRAY, out_textures[i] );
		glTexImage3D(
			GL_TEXTURE_2D_ARRAY, 0, GL_RGBA8,
			sprite.size[0], sprite.size[1], sprite.frame_count,
			0, GL_RGBA, GL_UNSIGNED_BYTE, data_rgba.data() );

		if( filter_textures_ )
		{
			glTexParameteri( GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
			glTexParameteri( GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
			glTexParameteri( GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
			glTexParameteri( GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
		}
		else
		{
			glTexParameteri( GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
			glTexParameteri( GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_LINEAR );
		}
		glGenerateMipmap( GL_TEXTURE_2D_ARRAY );
	}
}

void MapDrawerGL::PrepareSkyGeometry()