Example #1
0
void AbstractImageTest::dataSize() {
    /* Verify that row size is properly rounded */
    CORRADE_COMPARE(Image2D(ColorFormat::RGBA, ColorType::UnsignedByte).dataSize({}), 0);
    CORRADE_COMPARE(Image2D(ColorFormat::Red, ColorType::UnsignedByte).dataSize({4, 2}), 8);
    CORRADE_COMPARE(Image2D(ColorFormat::Red, ColorType::UnsignedByte).dataSize({2, 4}), 16);
    CORRADE_COMPARE(Image2D(ColorFormat::RGBA, ColorType::UnsignedByte).dataSize(Vector2i(1)), 4);

    CORRADE_COMPARE(Image2D(ColorFormat::RGBA, ColorType::UnsignedShort).dataSize({16, 8}),
                    4*2*16*8);
}
Example #2
0
	FlowMapHolder(
		GLuint flow_tex_size,
		GLuint tex_unit,
		const images::Image& flow_map_image
	): first_tex_unit(tex_unit)
	 , nhm(3)
	 , height_maps(nhm, Texture::Target::_2D, first_tex_unit)
	 , curr(0)
	{
		std::vector<GLfloat> v(flow_tex_size*flow_tex_size, 0.0f);
		for(GLuint i=0; i!=nhm; ++i)
		{
			height_maps[i].Image2D(
				0,
				PixelDataInternalFormat::Red,
				flow_tex_size, flow_tex_size,
				0,
				PixelDataFormat::Red,
				PixelDataType::Float,
				v.data()
			);
			height_maps[i].MinFilter(TextureMinFilter::Linear);
			height_maps[i].MagFilter(TextureMagFilter::Linear);
			height_maps[i].WrapS(TextureWrap::ClampToBorder);
			height_maps[i].WrapT(TextureWrap::ClampToBorder);
		}

		Texture::Active(BumpMapUnit());
		{
			auto bound_tex = Bind(bump_map, Texture::Target::_2D);
			bound_tex.Image2D(
				0,
				PixelDataInternalFormat::RGBA,
				flow_tex_size, flow_tex_size,
				0,
				PixelDataFormat::RGBA,
				PixelDataType::UnsignedByte,
				nullptr
			);
			bound_tex.MinFilter(TextureMinFilter::Linear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::ClampToEdge);
			bound_tex.WrapT(TextureWrap::ClampToEdge);
		}

		Texture::Active(FlowMapUnit());
		{
			auto bound_tex = Bind(flow_map, Texture::Target::_2D);
			bound_tex.Image2D(flow_map_image);
			bound_tex.MinFilter(TextureMinFilter::Linear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}
	}
Example #3
0
	FlowExample(void)
	 : gl()
	 , flow(images::LoadTexture("flow_map"), 1)
	 , screen(
		List("Position")("TexCoord").Get(),
		shapes::Screen(),
		screen_prog
	)
	{
		Texture::Active(0);
		{
			auto bound_tex = Bind(background, Texture::Target::_2D);
			bound_tex.Image2D(images::LoadTexture("flower_glass"));
			bound_tex.MinFilter(TextureMinFilter::Linear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::MirroredRepeat);
			bound_tex.WrapT(TextureWrap::MirroredRepeat);
		}

		screen_prog.background.Set(0);
		screen_prog.normal_map.Set(flow.TexUnit());

		gl.ClearColor(0.4f, 0.4f, 0.4f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);
	}
Example #4
0
 Image2D createImage(size2 size, cl_mem_flags flags = CL_MEM_READ_WRITE, typename ChannelType<T>::Type* host_ptr = NULL, size_t pitch = 0)
 {
     cl_image_format format;
     format.image_channel_order = O;
     format.image_channel_data_type = T;
     cl_int err;
     cl_mem mem = clCreateImage2D(id(), flags, &format, size.s[0], size.s[1], pitch, host_ptr, err);
     CLPP_CHECK_ERROR(err);
     return Image2D(mem);
 }
Example #5
0
	RippleTexHolder(GLuint ripple_tex_size, GLuint tex_unit)
	 : first_tex_unit(tex_unit)
	 , nhm(3)
	 , height_maps(nhm)
	 , curr(0)
	{
		std::vector<GLfloat> v(ripple_tex_size*ripple_tex_size, 0.0f);
		for(GLuint i=0; i!=nhm; ++i)
		{
			Texture::Active(first_tex_unit+i);
			auto bound_tex = Bind(height_maps[i], Texture::Target::_2D);
			bound_tex.Image2D(
				0,
				PixelDataInternalFormat::Red,
				ripple_tex_size, ripple_tex_size,
				0,
				PixelDataFormat::Red,
				PixelDataType::Float,
				v.data()
			);
			bound_tex.MinFilter(TextureMinFilter::Nearest);
			bound_tex.MagFilter(TextureMagFilter::Nearest);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}

		Texture::Active(first_tex_unit+nhm);
		auto bound_tex = Bind(bump_map, Texture::Target::_2D);
		bound_tex.Image2D(
			0,
			PixelDataInternalFormat::RGBA,
			ripple_tex_size, ripple_tex_size,
			0,
			PixelDataFormat::RGBA,
			PixelDataType::UnsignedByte,
			nullptr
		);
		bound_tex.MinFilter(TextureMinFilter::Linear);
		bound_tex.MagFilter(TextureMagFilter::Linear);
		bound_tex.WrapS(TextureWrap::Repeat);
		bound_tex.WrapT(TextureWrap::Repeat);
	}
	FBTexThread(FBTexExample& example)
	 : gl()
	 , prog(make_prog(example))
	 , projection_matrix(prog, "ProjectionMatrix")
	 , camera_matrix(prog, "CameraMatrix")
	 , model_matrix(prog, "ModelMatrix")
	 , shape(List("Position")("Normal")("TexCoord").Get(), shapes::TwistedTorus(), prog)
	 , tex_side(512)
	 , parent_ready(example.parent_ready)
	{
		example.thread_ready = &thread_ready;

		Uniform<Vec3f>(prog, "LightPos").Set(20.0f, 30.0f, 40.0f);

		Texture::Active(0);
		{
			auto bound_tex = Bind(example.tex, Texture::Target::_2D);
			bound_tex.Image2D(
				0,
				PixelDataInternalFormat::RGBA,
				tex_side, tex_side,
				0,
				PixelDataFormat::RGBA,
				PixelDataType::UnsignedByte,
				nullptr
			);
			bound_tex.MinFilter(TextureMinFilter::Linear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}

		{
			auto bound_fbo = Bind(fbo, Framebuffer::Target::Draw);
			auto bound_rbo = Bind(rbo, Renderbuffer::Target::Renderbuffer);

 			bound_rbo.Storage(
				PixelDataInternalFormat::DepthComponent,
				tex_side,
				tex_side
			);
			bound_fbo.AttachTexture(FramebufferAttachment::Color, example.tex, 0);
			bound_fbo.AttachRenderbuffer(FramebufferAttachment::Depth, rbo);
		}

		Use();
	}
Example #7
0
	CubeExample(void)
	 : cube(
		List("Position")("Normal")("TexCoord").Get(),
		shapes::Cube(),
		cube_prog
	)
	{
		// setup the texture
		{
			GLuint tex_side = 512;
			auto image = images::NewtonFractal(
				tex_side, tex_side,
				Vec3f(0.2f, 0.1f, 0.4f),
				Vec3f(0.8f, 0.8f, 1.0f),
				Vec2f(-1.0f, -1.0f),
				Vec2f( 1.0f,  1.0f),
				images::NewtonFractal::X4Minus1(),
				images::NewtonFractal::DefaultMixer()
			);
			auto bound_tex = Bind(cube_tex, Texture::Target::_2D);

			bound_tex.Image2D(image);
			bound_tex.GenerateMipmap();
			bound_tex.BorderColor(Vec4f(0.8f, 0.8f, 1.0f, 1.0f));
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}

		cube_prog.cube_tex = 0;
		cube_prog.light_position.Set(4.0f, 4.0f, -8.0f);

		gl.ClearColor(0.8f, 0.8f, 0.7f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);
		gl.Enable(Capability::CullFace);
		gl.CullFace(Face::Back);
	}
Example #8
0
	CubeExample(void)
	 : cube_instr(make_cube.Instructions())
	 , cube_indices(make_cube.Indices())
	 , projection_matrix(prog, "ProjectionMatrix")
	 , camera_matrix(prog, "CameraMatrix")
	 , model_matrix(prog, "ModelMatrix")
	{
		// Set the vertex shader source
		vs.Source(
			"#version 330\n"
			"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
			"in vec4 Position;"
			"in vec3 Normal;"
			"in vec2 TexCoord;"
			"out vec3 vertNormal;"
			"out vec3 vertLight;"
			"out vec2 vertTexCoord;"
			"uniform vec3 LightPos;"
			"void main(void)"
			"{"
			"	vertNormal = mat3(ModelMatrix)*Normal;"
			"	gl_Position = ModelMatrix * Position;"
			"	vertLight = LightPos - gl_Position.xyz;"
			"	vertTexCoord = TexCoord * 6.0;"
			"	gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
			"}"
		);
		// compile it
		vs.Compile();

		// set the fragment shader source
		fs.Source(
			"#version 330\n"
			"uniform sampler2D TexUnit;"
			"in vec3 vertNormal;"
			"in vec3 vertLight;"
			"in vec2 vertTexCoord;"
			"out vec4 fragColor;"
			"void main(void)"
			"{"
			"	float l = dot(vertLight, vertLight);"
			"	float d = l != 0.0 ? dot("
			"		vertNormal, "
			"		normalize(vertLight)"
			"	) / l : 0.0;"
			"	vec3 c = vec3(0.9, 0.8, 0.2);"
			"	vec4 t  = texture(TexUnit, vertTexCoord);"
			"	float a = 1.0 - sqrt(abs(d)), e;"
			"	if(gl_FrontFacing)"
			"	{"
			"		e = d >= 0.0 ?"
			"		d * mix(0.5, 1.0, t.a):"
			"		(-0.9*d) * (1.0 - t.a);"
			"	}"
			"	else"
			"	{"
			"		e = d >= 0.0 ?"
			"		(0.6*d) * (1.0 - t.a):"
			"		(-0.7*d) * mix(0.5, 1.0, t.a);"
			"	}"
			"	float i = 0.1 + 9.0*e;"
			"	fragColor = vec4("
			"		t.r*c.r*i, "
			"		t.g*c.g*i, "
			"		t.b*c.b*i, "
			"		clamp(pow(t.a,2) + a*0.4, 0.0, 1.0)"
			"	);"
			"}"
		);
		// compile it
		fs.Compile();

		// attach the shaders to the program
		prog.AttachShader(vs);
		prog.AttachShader(fs);
		// link and use it
		prog.Link();
		prog.Use();

		// bind the VAO for the cube
		cube.Bind();

		verts.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Positions(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(prog, "Position");
			attr.Setup(n_per_vertex, DataType::Float);
			attr.Enable();
		}

		normals.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Normals(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(prog, "Normal");
			attr.Setup(n_per_vertex, DataType::Float);
			attr.Enable();
		}

		texcoords.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.TexCoordinates(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(prog, "TexCoord");
			attr.Setup(n_per_vertex, DataType::Float);
			attr.Enable();
		}

		// setup the texture
		{
			auto bound_tex = Bind(tex, Texture::Target::_2D);
			bound_tex.Image2D(images::LoadTexture("honeycomb"));
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::MirroredRepeat);
			bound_tex.WrapT(TextureWrap::MirroredRepeat);
		}
		//
		UniformSampler(prog, "TexUnit").Set(0);
		Uniform<Vec3f>(prog, "LightPos").Set(Vec3f(1.0f, 2.0f, 3.0f));
		//
		gl.ClearColor(0.1f, 0.1f, 0.1f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);
		gl.Enable(Capability::Blend);
		gl.BlendFunc(
			BlendFn::SrcAlpha,
			BlendFn::OneMinusSrcAlpha
		);

		gl.Enable(Capability::CullFace);
		gl.FrontFace(make_cube.FaceWinding());
	}
Example #9
0
Image2D loadTexture(const std::string filename) 
 {
	Image2D image;

   //header for testing if it is a png
   png_byte header[8];
 
   //open file as binary
   FILE *fp = fopen(filename.c_str(), "rb");
   if (!fp) {
     return image;
   }
 
   //read the header
   fread(header, 1, 8, fp);
 
   //test if png
   int is_png = !png_sig_cmp(header, 0, 8);
   if (!is_png) {
     fclose(fp);
     return image;
   }
 
   //create png struct
   png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL,
       NULL, NULL);
   if (!png_ptr) {
     fclose(fp);
     return image;
   }
 
   //create png info struct
   png_infop info_ptr = png_create_info_struct(png_ptr);
   if (!info_ptr) {
     png_destroy_read_struct(&png_ptr, (png_infopp) NULL, (png_infopp) NULL);
     fclose(fp);
     return image;
   }
 
   //create png info struct
   png_infop end_info = png_create_info_struct(png_ptr);
   if (!end_info) {
     png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
     fclose(fp);
     return image;
   }
 
   //png error stuff, not sure libpng man suggests this.
   if (setjmp(png_jmpbuf(png_ptr))) {
     png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
     fclose(fp);
     return image;
   }
 
   //init png reading
   png_init_io(png_ptr, fp);
 
   //let libpng know you already read the first 8 bytes
   png_set_sig_bytes(png_ptr, 8);
 
   // read all the info up to the image data
   png_read_info(png_ptr, info_ptr);
 
   //variables to pass to get info
   int bit_depth, color_type;
   png_uint_32 twidth, theight;
 
   // get info about png
   png_get_IHDR(png_ptr, info_ptr, &twidth, &theight, &bit_depth, &color_type,
       NULL, NULL, NULL);
 
   // Update the png info struct.
   png_read_update_info(png_ptr, info_ptr);
 
   // Row size in bytes.
   int rowbytes = png_get_rowbytes(png_ptr, info_ptr);

   image = Image2D(twidth, theight, GL_RGBA, GL_UNSIGNED_BYTE, rowbytes * theight);
 
   //row_pointers is for pointing to image_data for reading the png with libpng
   png_bytep *row_pointers = new png_bytep[theight];
   if (!row_pointers) {
     //clean up memory and close stuff
     png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
     fclose(fp);
     return image;
   }
   // set the individual row_pointers to point at the correct offsets of image_data
   for (png_uint_32 i = 0; i < theight; ++i)
     row_pointers[theight - 1 - i] = image.data() + i * rowbytes;
 
   //read the png into image_data through row_pointers
   png_read_image(png_ptr, row_pointers);
 
   //clean up memory and close stuff
   png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
   delete[] row_pointers;
   fclose(fp);
 
   return image;
 }
	CubeExample(void)
	 : cube_instr(make_cube.Instructions())
	 , cube_indices(make_cube.Indices())
	 , projection_matrix(prog, "ProjectionMatrix")
	 , camera_matrix(prog, "CameraMatrix")
	 , model_matrix(prog, "ModelMatrix")
	{
		namespace se = oglplus::smart_enums;
		VertexShader vs;
		vs.Source(
			"#version 120\n"
			"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
			"attribute vec4 Position;"
			"attribute vec3 Normal;"
			"attribute vec2 TexCoord;"
			"varying vec3 vertNormal;"
			"varying vec3 vertLight;"
			"varying vec2 vertTexCoord;"
			"uniform vec3 LightPos;"
			"void main(void)"
			"{"
			"	vertNormal = mat3(ModelMatrix)*Normal;"
			"	gl_Position = ModelMatrix * Position;"
			"	vertLight = LightPos - gl_Position.xyz;"
			"	vertTexCoord = TexCoord;"
			"	gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
			"}"
		).Compile();

		FragmentShader fs;
		fs.Source(
			"#version 120\n"
			"uniform sampler2D TexUnit;"
			"varying vec3 vertNormal;"
			"varying vec3 vertLight;"
			"varying vec2 vertTexCoord;"
			"void main(void)"
			"{"
			"	float l = length(vertLight);"
			"	float d = l > 0 ? dot(vertNormal, normalize(vertLight)) / l : 0.0;"
			"	float i = 0.3 + 2.0*max(d, 0.0);"
			"	vec4 t = texture2D(TexUnit, vertTexCoord);"
			"	gl_FragColor = vec4(t.rgb*i, 1.0);"
			"}"
		).Compile();

		prog.AttachShader(vs).AttachShader(fs).Link().Use();

		// bind the VAO for the cube
		cube.Bind();

		verts.Bind(se::Array());
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Positions(data);
			Buffer::Data(se::Array(), data);
			(prog|"Position").Setup(n_per_vertex, se::Float()).Enable();
		}

		normals.Bind(se::Array());
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Normals(data);
			Buffer::Data(se::Array(), data);
			(prog|"Normal").Setup(n_per_vertex, se::Float()).Enable();
		}

		texcoords.Bind(se::Array());
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.TexCoordinates(data);
			Buffer::Data(se::Array(), data);
			(prog|"TexCoord").Setup(n_per_vertex, se::Float()).Enable();
		}

		// setup the texture
		{
			auto bound_tex = Bind(tex, se::_2D());
			auto image = images::NewtonFractal(
				512, 512,
				Vec3f(1.0f, 1.4f, 1.3f),
				Vec3f(0.2f, 0.3f, 0.1f),
				Vec2f(-1.0f, -1.0f),
				Vec2f( 1.0f,  1.0f),
				images::NewtonFractal::X4Minus1(),
				[](double x) -> double
				{
					return pow(SineWave(pow(x,0.5)), 4.0);
				}
			);
			bound_tex.Image2D(image);
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(se::LinearMipmapLinear());
			bound_tex.MagFilter(se::Linear());
			bound_tex.WrapS(se::Repeat());
			bound_tex.WrapT(se::Repeat());
		}
		// set the uniform values
		(prog/"TexUnit") = 0;
		(prog/"LightPos") = Vec3f(1.0f, 2.0f, 3.0f);
		//
		gl.ClearColor(0.1f, 0.1f, 0.1f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(se::DepthTest());

		gl.Enable(se::CullFace());
		gl.FrontFace(make_cube.FaceWinding());
	}
Example #11
0
	Test01(void)
	{
		// Set the vertex shader source
		vs.Source(
			"#version 330\n"
			"uniform mat4 projectionMatrix, cameraMatrix, modelMatrix;"
			"in vec4 vertex;"
			"in vec3 normal;"
			"in vec3 tangent;"
			"in vec2 texcoord;"
			"out vec3 fragLight;"
			"out vec2 fragTex;"
			"out mat3 normalMatrix;"
			"uniform vec3 lightPos;"
			"void main(void)"
			"{"
			"	vec3 fragNormal = ("
			"		modelMatrix *"
			"		vec4(normal, 0.0)"
			"	).xyz;"
			"	vec3 fragTangent = ("
			"		modelMatrix *"
			"		vec4(tangent, 0.0)"
			"	).xyz;"
			"	normalMatrix[0] = fragTangent;"
			"	normalMatrix[1] = cross(fragNormal, fragTangent);"
			"	normalMatrix[2] = fragNormal;"
			"	fragLight = ("
			"		vec4(lightPos, 0.0)-"
			"		modelMatrix*vertex"
			"	).xyz;"
			"	fragTex = texcoord;"
			"	gl_Position = "
			"		projectionMatrix *"
			"		cameraMatrix *"
			"		modelMatrix *"
			"		vertex;"
			"}"
		);
		// compile it
		vs.Compile();

		// set the fragment shader source
		fs.Source(
			"#version 330\n"
			"uniform sampler2D colorTex, normalTex;"
			"in vec3 fragLight;"
			"in vec2 fragTex;"
			"in mat3 normalMatrix;"
			"out vec4 fragColor;"
			"void main(void)"
			"{"
			"	float s = 5.0;"
			"	float l = length(fragLight);"
			"	vec3 n = texture2D(normalTex, fragTex*s).xyz;"
			"	vec3 finalNormal = normalMatrix * n;"
			"	float d = (l != 0.0)?"
			"		dot(fragLight, finalNormal)/l:"
			"		0.0;"
			"	float i = 0.1 + 2.5*clamp(d, 0.0, 1.0);"
			"	vec4 t  = texture2D(colorTex, fragTex*s);"
			"	fragColor = vec4(t.rgb*i, 1.0);"
			"}"
		);
		// compile it
		fs.Compile();

		// attach the shaders to the program
		prog.AttachShader(vs);
		prog.AttachShader(fs);
		// link and use it
		prog.Link();
		prog.Use();

		// bind the VAO for the shape
		vao.Bind();

		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = shape.Positions(data);
			Bind(verts, Buffer::Target::Array).Data(data);
			// setup the vertex attribs array for the vertices
			VertexAttribArray attr(prog, "vertex");
			attr.Setup(n_per_vertex, DataType::Float);
			attr.Enable();
		}

		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = shape.Normals(data);
			Bind(normals, Buffer::Target::Array).Data(data);
			// setup the vertex attribs array for the normals
			VertexAttribArray attr(prog, "normal");
			attr.Setup(n_per_vertex, DataType::Float);
			attr.Enable();
		}

		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = shape.Tangents(data);
			Bind(tangents, Buffer::Target::Array).Data(data);
			VertexAttribArray attr(prog, "tangent");
			attr.Setup(n_per_vertex, DataType::Float);
			attr.Enable();
		}

		// bind the VBO for the shape tex-coords
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = shape.TexCoordinates(data);
			Bind(texcoords, Buffer::Target::Array).Data(data);
			//
			VertexAttribArray attr(prog, "texcoord");
			attr.Setup(n_per_vertex, DataType::Float);
			attr.Enable();
		}

		// setup the textures
		{
			Texture::Active(0);
			UniformSampler(prog, "colorTex").Set(0);
			auto bound_tex = Bind(color_tex, Texture::Target::_2D);
			bound_tex.Image2D(images::LoadTexture("stones"));
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}
		{
			Texture::Active(1);
			UniformSampler(prog, "normalTex").Set(1);
			auto bound_tex = Bind(normal_tex, Texture::Target::_2D);
			bound_tex.Image2D(
				images::NormalMap(images::LoadTexture("stones-hmap"))
			);
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}

		Uniform<Mat4f>(prog, "projectionMatrix").Set(
			CamMatrixf::Perspective(Degrees(24), 1.25, 1, 100)
		);
		//
		VertexArray::Unbind();
		gl.ClearColor(0.3f, 0.3f, 0.3f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);
		//
		gl.FrontFace(shape.FaceWinding());
		gl.CullFace(Face::Back);
		gl.Enable(Capability::CullFace);
	}
Example #12
0
	CubeExample(void)
	 : cube_instr(make_cube.Instructions())
	 , cube_indices(make_cube.Indices())
	 , projection_matrix(prog, "ProjectionMatrix")
	 , camera_matrix(prog, "CameraMatrix")
	 , model_matrix(prog, "ModelMatrix")
	{
		namespace se = oglplus::smart_enums;
		// Set the vertex shader source
		vs.Source(
			"#version 330\n"
			"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
			"in vec4 Position;"
			"in vec3 Normal;"
			"in vec2 TexCoord;"
			"out vec3 vertNormal;"
			"out vec3 vertLight;"
			"out vec2 vertTexCoord;"
			"uniform vec3 LightPos;"
			"void main(void)"
			"{"
			"	vertNormal = mat3(ModelMatrix)*Normal;"
			"	gl_Position = ModelMatrix * Position;"
			"	vertLight = LightPos - gl_Position.xyz;"
			"	vertTexCoord = TexCoord;"
			"	gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
			"}"
		);
		// compile it
		vs.Compile();

		// set the fragment shader source
		fs.Source(
			"#version 330\n"
			"uniform sampler2D TexUnit;"
			"in vec3 vertNormal;"
			"in vec3 vertLight;"
			"in vec2 vertTexCoord;"
			"out vec4 fragColor;"
			"void main(void)"
			"{"
			"	float l = length(vertLight);"
			"	float d = l > 0 ? dot(vertNormal, normalize(vertLight)) / l : 0.0;"
			"	float i = 0.3 + 2.0*max(d, 0.0);"
			"	vec4 t  = texture(TexUnit, vertTexCoord);"
			"	fragColor = vec4(t.rgb*i, 1.0);"
			"}"
		);
		// compile it
		fs.Compile();

		// attach the shaders to the program
		prog.AttachShader(vs);
		prog.AttachShader(fs);
		// link and use it
		prog.Link();
		prog.Use();

		// bind the VAO for the cube
		cube.Bind();

		verts.Bind(se::Array());
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Positions(data);
			Buffer::Data(se::Array(), data);
			(prog|"Position").Setup(n_per_vertex, se::Float()).Enable();
		}

		normals.Bind(se::Array());
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Normals(data);
			Buffer::Data(se::Array(), data);
			(prog|"Normal").Setup(n_per_vertex, se::Float()).Enable();
		}

		texcoords.Bind(se::Array());
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.TexCoordinates(data);
			Buffer::Data(se::Array(), data);
			(prog|"TexCoord").Setup(n_per_vertex, se::Float()).Enable();
		}

		// setup the texture
		{
			auto bound_tex = Bind(tex, se::_2D());
			bound_tex.Image2D(images::LoadTexture("concrete_block"));
			bound_tex.MinFilter(se::Linear());
			bound_tex.MagFilter(se::Linear());
			bound_tex.WrapS(se::Repeat());
			bound_tex.WrapT(se::Repeat());
		}
		// set the uniform values
		(prog/"TexUnit") = 0;
		(prog/"LightPos") = Vec3f(1.0f, 2.0f, 3.0f);
		//
		gl.ClearColor(0.1f, 0.1f, 0.1f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(se::DepthTest());

		gl.Enable(se::CullFace());
		gl.FrontFace(make_cube.FaceWinding());
	}
Example #13
0
	FBTexExample(void)
	 : make_cube()
	 , cube_instr(make_cube.Instructions())
	 , cube_indices(make_cube.Indices())
	 , make_torus(1.0, 0.5, 72, 48)
	 , torus_instr(make_torus.Instructions())
	 , torus_indices(make_torus.Indices())
	 , cube_fs(ObjectDesc("Cube fragment"))
	 , torus_fs(ObjectDesc("Torus fragment"))
	 , torus_projection_matrix(torus_prog, "ProjectionMatrix")
	 , torus_camera_matrix(torus_prog, "CameraMatrix")
	 , torus_model_matrix(torus_prog, "ModelMatrix")
	 , cube_projection_matrix(cube_prog, "ProjectionMatrix")
	 , cube_camera_matrix(cube_prog, "CameraMatrix")
	 , cube_model_matrix(cube_prog, "ModelMatrix")
	 , tex_side(512)
	 , width(tex_side)
	 , height(tex_side)
	{
		vs.Source(
			"#version 330\n"
			"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
			"in vec4 Position;"
			"in vec3 Normal;"
			"in vec2 TexCoord;"
			"out vec3 vertNormal;"
			"out vec3 vertLight;"
			"out vec2 vertTexCoord;"
			"uniform vec3 LightPos;"
			"void main(void)"
			"{"
			"	vertNormal = mat3(ModelMatrix)*Normal;"
			"	gl_Position = ModelMatrix * Position;"
			"	vertLight = LightPos-gl_Position.xyz;"
			"	vertTexCoord = TexCoord;"
			"	gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
			"}"
		);
		vs.Compile();

		cube_fs.Source(
			"#version 330\n"
			"uniform sampler2D TexUnit;"
			"in vec3 vertNormal;"
			"in vec3 vertLight;"
			"in vec2 vertTexCoord;"
			"out vec4 fragColor;"
			"void main(void)"
			"{"
			"	float l = sqrt(length(vertLight));"
			"	float d = l > 0? dot(vertNormal, normalize(vertLight)) / l : 0.0;"
			"	float i = 0.6 + max(d, 0.0);"
			"	fragColor = texture(TexUnit, vertTexCoord)*i;"
			"}"
		);
		cube_fs.Compile();

		cube_prog.AttachShader(vs);
		cube_prog.AttachShader(cube_fs);
		cube_prog.Link();
		cube_prog.Use();

		cube.Bind();

		cube_verts.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Positions(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(cube_prog, "Position");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		cube_normals.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Normals(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(cube_prog, "Normal");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		cube_texcoords.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.TexCoordinates(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(cube_prog, "TexCoord");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		UniformSampler(cube_prog, "TexUnit").Set(0);
		Uniform<Vec3f>(cube_prog, "LightPos").Set(4.0f, 4.0f, -8.0f);

		torus_fs.Source(
			"#version 330\n"
			"in vec3 vertNormal;"
			"in vec3 vertLight;"
			"in vec2 vertTexCoord;"
			"out vec4 fragColor;"
			"void main(void)"
			"{"
			"	float d = dot("
			"		vertNormal, "
			"		normalize(vertLight)"
			"	);"
			"	float i = ("
			"		int(vertTexCoord.x*18) % 2+"
			"		int(vertTexCoord.y*14) % 2"
			"	) % 2;"
			"	float c = (0.4 + max(d, 0.0))*(1-i/2);"
			"	fragColor = vec4(c, c, c, 1.0);"
			"}"
		);
		torus_fs.Compile();

		torus_prog.AttachShader(vs);
		torus_prog.AttachShader(torus_fs);
		torus_prog.Link();
		torus_prog.Use();

		torus.Bind();

		torus_verts.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_torus.Positions(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(torus_prog, "Position");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		torus_normals.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_torus.Normals(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(torus_prog, "Normal");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		torus_texcoords.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_torus.TexCoordinates(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(torus_prog, "TexCoord");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		Uniform<Vec3f>(torus_prog, "LightPos").Set(2.0f, 3.0f, 4.0f);

		{
			auto bound_tex = Bind(tex, Texture::Target::_2D);
			bound_tex.Image2D(
				0,
				PixelDataInternalFormat::RGBA,
				tex_side, tex_side,
				0,
				PixelDataFormat::RGBA,
				PixelDataType::UnsignedByte,
				nullptr
			);
			bound_tex.MinFilter(TextureMinFilter::Linear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}

		{
			auto bound_fbo = Bind(
				fbo,
				Framebuffer::Target::Draw
			);
			auto bound_rbo = Bind(
				rbo,
				Renderbuffer::Target::Renderbuffer
			);
			bound_rbo.Storage(
				PixelDataInternalFormat::DepthComponent,
				tex_side,
				tex_side
			);
			bound_fbo.AttachTexture(
				FramebufferAttachment::Color,
				tex,
				0
			);
			bound_fbo.AttachRenderbuffer(
				FramebufferAttachment::Depth,
				rbo
			);
		}

		gl.Enable(Capability::DepthTest);
		gl.Enable(Capability::CullFace);
		gl.CullFace(Face::Back);
	}
Example #14
0
	TriangleExample(void)
	 : projection_matrix(prog, "ProjectionMatrix")
	 , camera_matrix(prog, "CameraMatrix")
	 , camera_position(prog, "CameraPosition")
	 , light_position(prog, "LightPosition")
	 , shape(
		List("Position")("TexCoord").Get(),
		shapes::Plane(
			Vec3f(),
			Vec3f(1.0f, 0.0f, 0.0f),
			Vec3f(0.0f, 0.0f,-1.0f),
			32, 32
		)
	)
	{
		VertexShader vs;
		vs.Source(StrLit(
			"#version 330\n"
			"in vec3 Position;"
			"in vec2 TexCoord;"
			"out vec2 vertTexCoord;"
			"void main(void)"
			"{"
			"	gl_Position = vec4(Position, 1.0);"
			"	vertTexCoord = TexCoord;"
			"}"
		)).Compile();
		prog.AttachShader(vs);

		GeometryShader gs;
		gs.Source(StrLit(
			"#version 330\n"
			"#extension GL_ARB_gpu_shader5 : enable\n"
			"layout(triangles, invocations = 7) in;"
			"layout(triangle_strip, max_vertices = 21) out;"

			"uniform mat4 ProjectionMatrix, CameraMatrix;"
			"mat4 Matrix = ProjectionMatrix * CameraMatrix;"
			"uniform vec3 CameraPosition;"

			"in vec2 vertTexCoord[3];"

			"out gl_PerVertex {"
			"	vec4 gl_Position;"
			"	float gl_ClipDistance[3];"
			"};"
			"flat out mat3 geomPositionFront;"
			"flat out mat3 geomTexCoordFront;"
			"flat out vec3 geomWFront;"
			"noperspective out vec3 geomBarycentric;"
			"out vec3 geomPosition;"
			"out vec3 geomTexCoord;"

			"void main(void)"
			"{"
			"	vec4 world_pos[8*3];"
			"	vec3 tex_coord[8*3];"

			"	vec4 view_pos[8*3];"
			"	vec3 screen_pos[8*3];"
			"	bool front_facing[8];"

			"	int ft = gl_InvocationID+1;"

			"	for(int pass=0; pass!=2; ++pass)"
			"	{"
			"		bool first = pass == 0;"
			"		if(((ft == 0) && first) || (((ft != 0) && !first)))"
			"		{"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				int w = 2-v;"
			"				world_pos[0+v] = gl_in[w].gl_Position;"
			"				tex_coord[0+v] = vec3(vertTexCoord[w], 0.0);"
			"			}"
			"		}"

			"		vec4 n = vec4(-0.15 * normalize(cross("
			"			gl_in[1].gl_Position.xyz-gl_in[0].gl_Position.xyz,"
			"			gl_in[2].gl_Position.xyz-gl_in[0].gl_Position.xyz "
			"		)), 0.0);"

			"		if(((ft == 1) && first) || (((ft != 1) && !first)))"
			"		{"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				world_pos[3+v] = gl_in[v].gl_Position + n;"
			"				tex_coord[3+v] = vec3(vertTexCoord[v], 1.0);"
			"			}"
			"		}"

			"		for(int v=0; v!=3; ++v)"
			"		{"
			"			int w = (v+1)%3;"
			"			int k = 2+2*v;"
			"			if(((ft == k) && first) || (((ft != k) && !first)))"
			"			{"
			"				world_pos[6+0+v*6] = gl_in[v].gl_Position;"
			"				tex_coord[6+0+v*6] = vec3(vertTexCoord[v], 0.0);"
			"				world_pos[6+1+v*6] = gl_in[w].gl_Position;"
			"				tex_coord[6+1+v*6] = vec3(vertTexCoord[w], 0.0);"
			"				world_pos[6+2+v*6] = gl_in[v].gl_Position + n;"
			"				tex_coord[6+2+v*6] = vec3(vertTexCoord[v], 1.0);"
			"			}"

			"			k = 3+2*v;"
			"			if(((ft == k) && first) || (((ft != k) && !first)))"
			"			{"
			"				world_pos[6+3+v*6] = gl_in[w].gl_Position;"
			"				tex_coord[6+3+v*6] = vec3(vertTexCoord[w], 0.0);"
			"				world_pos[6+4+v*6] = gl_in[w].gl_Position + n;"
			"				tex_coord[6+4+v*6] = vec3(vertTexCoord[w], 1.0);"
			"				world_pos[6+5+v*6] = gl_in[v].gl_Position + n;"
			"				tex_coord[6+5+v*6] = vec3(vertTexCoord[v], 1.0);"
			"			}"
			"		}"

			"		for(int t=first?ft:0; t!=8; ++t)"
			"		{"
			"			if(!first && (t == ft)) continue;"
			"			int o = t*3;"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				int w = o+v;"
			"				view_pos[w] = Matrix * world_pos[w];"
			"				screen_pos[w] = view_pos[w].xyz/view_pos[w].w;"
			"			}"
			"			front_facing[t] = cross("
			"				screen_pos[o+1]-screen_pos[o+0],"
			"				screen_pos[o+2]-screen_pos[o+0] "
			"			).z < 0.0;"
			"			if(first) break;"
			"		}"
			"		if(first && !front_facing[ft]) return;"
			"	}"

			"	int o = ft*3;"
			"	vec4 clip_plane[3];"
			"	for(int v=0; v!=3; ++v)"
			"	{"
			"		int w = (v+1)%3;"
			"		vec3 p0 = world_pos[o+v].xyz;"
			"		vec3 p1 = world_pos[o+w].xyz;"
			"		vec3 p2 = CameraPosition;"
			"		vec3 pv = normalize(cross(p1-p0, p2-p0));"
			"		clip_plane[v] = vec4(pv, -dot(pv, p0));"
			"	}"
			"	vec3 lo = CameraPosition;"
			"	vec3 p0 = world_pos[o+0].xyz;"
			"	vec3 pu = world_pos[o+1].xyz-p0;"
			"	vec3 pv = world_pos[o+2].xyz-p0;"
			"	vec3 lp = lo-p0;"

			"	float w0 = view_pos[o+0].w;"
			"	float wu = view_pos[o+1].w-w0;"
			"	float wv = view_pos[o+2].w-w0;"

			"	vec3 t0 = tex_coord[o+0];"
			"	vec3 tu = tex_coord[o+1]-t0;"
			"	vec3 tv = tex_coord[o+2]-t0;"

			"	for(int bt=0; bt!=8; ++bt)"
			"	{"
			"		int k = bt*3;"
			"		if((ft != bt) && !front_facing[bt])"
			"		{"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				vec3 lt = world_pos[k+v].xyz;"
			"				mat3 im = mat3(lo-lt, pu, pv);"
			"				vec3 ic = inverse(im)*lp;"
			"				float s = ic.y;"
			"				float t = ic.z;"

			"				geomPositionFront[v] = p0+pu*s+pv*t;"
			"				geomTexCoordFront[v] = t0+tu*s+tv*t;"
			"				geomWFront[v] = w0+wu*s+wv*t;"
			"			}"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				int w = k+v;"
			"				gl_Position = view_pos[w];"
			"				for(int c=0; c!=3; ++c)"
			"				{"
			"					gl_ClipDistance[c] = dot("
			"						clip_plane[c],"
			"						world_pos[w]"
			"					);"
			"				}"
			"				geomPosition = world_pos[w].xyz;"
			"				geomTexCoord = tex_coord[w];"
			"				geomBarycentric = vec3(0.0);"
			"				geomBarycentric[v] = 1.0;"

			"				EmitVertex();"
			"			}"
			"			EndPrimitive();"
			"		}"
			"	}"
			"}"
		)).Compile();
		prog.AttachShader(gs);

		FragmentShader fs;
		fs.Source(StrLit(
			"#version 330\n"

			"uniform float Time;"
			"uniform sampler2D ColorMap;"
			"uniform sampler2D BumpMap;"
			"uniform vec3 LightPosition;"

			"flat in mat3 geomPositionFront;"
			"flat in mat3 geomTexCoordFront;"
			"flat in vec3 geomWFront;"
			"noperspective in vec3 geomBarycentric;"
			"in vec3 geomPosition;"
			"in vec3 geomTexCoord;"

			"out vec3 fragColor;"

			"vec3 vcdiv(vec3 a, vec3 b)"
			"{"
			"	return vec3(a.x/b.x, a.y/b.y, a.z/b.z);"
			"}"

			"void main(void)"
			"{"
			"	const vec3 one = vec3(1.0, 1.0, 1.0);"

			"	vec3 bzfv = vcdiv(geomBarycentric,geomWFront);"

			"	vec3 p0 = geomPosition;"
			"	vec3 p1 = (geomPositionFront*bzfv)/dot(one,bzfv);"
			"	vec3 tc0 = geomTexCoord;"
			"	vec3 tc1 = (geomTexCoordFront*bzfv)/dot(one,bzfv);"
			"	ivec2 ts = textureSize(BumpMap, 0);"
			"	int mts = max(ts.x, ts.y);"
			"	vec2 dtc = tc1.xy - tc0.xy;"
			"	float mdtc = max(abs(dtc.x), abs(dtc.y));"

			"	int nsam = max(min(int(mdtc*mts), mts/2), 1);"
			"	float step = 1.0 / nsam;"
			"	for(int s=0; s<=nsam; ++s)"
			"	{"
			"		vec3 tc = mix(tc1, tc0, s*step);"
			"		vec4 bm = texture(BumpMap, tc.xy);"
			"		if(tc.z <= bm.w)"
			"		{"
			"			vec3 p = mix(p1, p0, s*step);"
			"			vec3 ldir = normalize(LightPosition - p);"
			"			float l = max(dot(ldir, bm.xzy), 0.0)*1.3;"
			"			fragColor = texture(ColorMap, tc.xy).rgb*l;"
			"			return;"
			"		}"
			"	}"
			"	discard;"
			"}"
		)).Compile();
		prog.AttachShader(fs);

		prog.Link();
		prog.Use();

		shape.UseInProgram(prog);

		auto tex_image = images::LoadTexture("stones_color_hmap");

		Texture::Active(0);
		try
		{
			UniformSampler(prog, "ColorMap").Set(0);
			auto bound_tex = Bind(color_tex, Texture::Target::_2D);
			bound_tex.Image2D(tex_image);
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}
		catch(Error&){ }

		Texture::Active(1);
		try
		{
			UniformSampler(prog, "BumpMap").Set(1);
			auto bound_tex = Bind(bump_tex, Texture::Target::_2D);
			bound_tex.Image2D(
				images::NormalMap(
					tex_image,
					images::NormalMap::FromAlpha()
				)
			);
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}
		catch(Error&){ }

		gl.ClearColor(0.1f, 0.1f, 0.1f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);
		gl.Disable(Capability::CullFace);

		gl.Enable(Functionality::ClipDistance, 0);
		gl.Enable(Functionality::ClipDistance, 1);
		gl.Enable(Functionality::ClipDistance, 2);
	}
Example #15
0
	CubeExample(void)
	 : cube_instr(make_cube.Instructions())
	 , cube_indices(make_cube.Indices())
	 , projection_matrix(prog, "ProjectionMatrix")
	 , camera_matrix(prog, "CameraMatrix")
	 , model_matrix(prog, "ModelMatrix")
	 , light_pos(prog, "LightPos")
	{
		namespace se = oglplus::smart_enums;
		// Set the vertex shader source
		vs.Source(
			"#version 330\n"
			"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
			"in vec4 Position;"
			"in vec3 Normal;"
			"in vec3 Tangent;"
			"in vec2 TexCoord;"
			"out vec3 vertLight;"
			"out vec2 vertTexCoord;"
			"out mat3 NormalMatrix;"
			"uniform vec3 LightPos;"
			"void main(void)"
			"{"
			"	vec3 fragNormal = mat3(ModelMatrix) * Normal;"
			"	vec3 fragTangent = mat3(ModelMatrix) * Tangent;"
			"	NormalMatrix[0] = fragTangent;"
			"	NormalMatrix[1] = cross(fragNormal, fragTangent);"
			"	NormalMatrix[2] = fragNormal;"

			"	gl_Position = ModelMatrix * Position;"
			"	vertLight = LightPos - gl_Position.xyz;"
			"	vertTexCoord = TexCoord;"
			"	gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
			"}"
		);
		// compile it
		vs.Compile();

		// set the fragment shader source
		fs.Source(
			"#version 330\n"
			"uniform sampler2D ColorTex, NormalTex;"
			"in mat3 NormalMatrix;"
			"in vec3 vertLight;"
			"in vec2 vertTexCoord;"
			"out vec4 fragColor;"
			"void main(void)"
			"{"
			"	float l = dot(vertLight, vertLight);"
			"	vec3 n = texture(NormalTex, vertTexCoord).xyz;"
			"	vec3 finalNormal = NormalMatrix * n;"
			"	float d = (l > 0.0) ? dot("
			"		normalize(vertLight), "
			"		finalNormal"
			"	) / l : 0.0;"
			"	float i = 0.2 + 4.5*max(d, 0.0);"
			"	vec4 t  = texture(ColorTex, vertTexCoord);"
			"	fragColor = vec4(t.rgb*i, 1.0);"
			"}"
		);
		// compile it
		fs.Compile();

		// attach the shaders to the program
		prog.AttachShader(vs);
		prog.AttachShader(fs);
		// link and use it
		prog.Link();
		prog.Use();

		// bind the VAO for the cube
		cube.Bind();

		verts.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Positions(data);
			Buffer::Data(se::Array(), data);
			VertexAttribArray attr(prog, "Position");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		normals.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Normals(data);
			Buffer::Data(se::Array(), data);
			VertexAttribArray attr(prog, "Normal");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		tangents.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Tangents(data);
			Buffer::Data(se::Array(), data);
			VertexAttribArray attr(prog, "Tangent");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		texcoords.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.TexCoordinates(data);
			Buffer::Data(se::Array(), data);
			VertexAttribArray attr(prog, "TexCoord");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		// setup the textures
		{
			Texture::Active(0);
			UniformSampler(prog, "ColorTex").Set(0);
			auto bound_tex = Bind(colorTex, se::_2D());
			bound_tex.Image2D(images::LoadTexture("wooden_crate"));
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(se::LinearMipmapLinear());
			bound_tex.MagFilter(se::Linear());
			bound_tex.WrapS(se::Repeat());
			bound_tex.WrapT(se::Repeat());
		}
		{
			Texture::Active(1);
			UniformSampler(prog, "NormalTex").Set(1);
			auto bound_tex = Bind(normalTex, se::_2D());
			bound_tex.Image2D(
				images::NormalMap(
					images::LoadTexture("wooden_crate-hmap"),
					images::NormalMap::FromRed()
				)
			);
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(se::LinearMipmapLinear());
			bound_tex.MagFilter(se::Linear());
			bound_tex.WrapS(se::Repeat());
			bound_tex.WrapT(se::Repeat());
		}
		//
		gl.ClearColor(0.1f, 0.1f, 0.1f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(se::DepthTest());

		gl.Enable(se::CullFace());
		gl.FrontFace(make_cube.FaceWinding());
	}
Example #16
0
	DOFExample(const ExampleParams& params)
	 : face_instr(make_cube.Instructions())
	 , edge_instr(make_cube.EdgeInstructions())
	 , face_indices(make_cube.Indices())
	 , edge_indices(make_cube.EdgeIndices())
	 , cube_matrices(MakeCubeMatrices(100, 10.0))
	 , viewport_width(dof_prog, "ViewportWidth")
	 , viewport_height(dof_prog, "ViewportHeight")
	 , projection_matrix(main_prog, "ProjectionMatrix")
	 , camera_matrix(main_prog, "CameraMatrix")
	 , model_matrix(main_prog, "ModelMatrix")
	 , ambient_color(main_prog, "AmbientColor")
	 , diffuse_color(main_prog, "DiffuseColor")
	 , focus_depth(dof_prog, "FocusDepth")
	 , color_tex(Texture::Target::Rectangle)
	 , depth_tex(Texture::Target::Rectangle)
	 , width(800)
	 , height(600)
	{
		main_vs.Source(
			"#version 330\n"
			"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
			"uniform vec3 LightPos;"
			"in vec4 Position;"
			"in vec3 Normal;"
			"out vec3 vertLightDir;"
			"out vec3 vertNormal;"
			"void main(void)"
			"{"
			"	gl_Position = ModelMatrix * Position;"
			"	vertLightDir = normalize(LightPos - gl_Position.xyz);"
			"	vertNormal = normalize(mat3(ModelMatrix)*Normal);"
			"	gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
			"}"
		);
		// compile it
		main_vs.Compile();

		// set the fragment shader source
		main_fs.Source(
			"#version 330\n"
			"uniform vec3 AmbientColor, DiffuseColor;"
			"in vec3 vertLightDir;"
			"in vec3 vertNormal;"
			"out vec4 fragColor;"
			"void main(void)"
			"{"
			"	float d = max(dot(vertLightDir,vertNormal),0.0);"
			"	float e = sin("
			"		10.0*vertLightDir.x + "
			"		20.0*vertLightDir.y + "
			"		25.0*vertLightDir.z   "
			"	)*0.9;"
			"	fragColor = vec4("
			"		mix(AmbientColor, DiffuseColor, d+e),"
			"		1.0"
			"	);"
			"}"
		);
		// compile it
		main_fs.Compile();

		// attach the shaders to the program
		main_prog.AttachShader(main_vs);
		main_prog.AttachShader(main_fs);
		// link and use it
		main_prog.Link();
		main_prog.Use();

		// bind the VAO for the cube
		cube.Bind();

		// bind the VBO for the cube vertices
		positions.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Positions(data);
			// upload the data
			Buffer::Data(Buffer::Target::Array, data);
			// setup the vertex attribs array for the vertices
			VertexAttribArray attr(main_prog, "Position");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		// bind the VBO for the cube normals
		normals.Bind(Buffer::Target::Array);
		{
			std::vector<GLfloat> data;
			GLuint n_per_vertex = make_cube.Normals(data);
			Buffer::Data(Buffer::Target::Array, data);
			VertexAttribArray attr(main_prog, "Normal");
			attr.Setup<GLfloat>(n_per_vertex);
			attr.Enable();
		}

		Uniform<Vec3f>(main_prog, "LightPos").Set(30.0, 50.0, 20.0);

		dof_vs.Source(
			"#version 330\n"
			"uniform uint ViewportWidth, ViewportHeight;"
			"in vec4 Position;"
			"out vec2 vertTexCoord;"
			"void main(void)"
			"{"
			"	gl_Position = Position;"
			"	vertTexCoord = vec2("
			"		(Position.x*0.5 + 0.5)*ViewportWidth,"
			"		(Position.y*0.5 + 0.5)*ViewportHeight"
			"	);"
			"}"
		);
		dof_vs.Compile();

		dof_fs.Source(
			"#version 330\n"
			"uniform sampler2DRect ColorTex;"
			"uniform sampler2DRect DepthTex;"
			"uniform float FocusDepth;"
			"uniform uint SampleMult;"
			"in vec2 vertTexCoord;"
			"out vec4 fragColor;"
			"const float strength = 16.0;"
			"void main(void)"
			"{"
			"	float fragDepth = texture(DepthTex, vertTexCoord).r;"
			"	vec3 color = texture(ColorTex, vertTexCoord).rgb;"
			"	float of = abs(fragDepth - FocusDepth);"
			"	int nsam = int(of*SampleMult);"
			"	float inv_nsam = 1.0 / (1.0 + nsam);"
			"	float astep = (3.14151*4.0)/nsam;"
			"	for(int i=0; i!=nsam; ++i)"
			"	{"
			"		float a = i*astep;"
			"		float d = sqrt(i*inv_nsam);"
			"		float sx = cos(a)*of*strength*d;"
			"		float sy = sin(a)*of*strength*d;"
			"		vec2 samTexCoord = vertTexCoord + vec2(sx, sy) + noise2(vec2(sx, sy));"
			"		color += texture(ColorTex, samTexCoord).rgb;"
			"	}"
			"	fragColor = vec4(color * inv_nsam , 1.0);"
			"}"
		);
		dof_fs.Compile();

		dof_prog.AttachShader(dof_vs);
		dof_prog.AttachShader(dof_fs);
		dof_prog.Link();
		dof_prog.Use();

		GLuint sample_mult = params.HighQuality()?512:128;
		Uniform<GLuint>(dof_prog, "SampleMult") = sample_mult;

		// bind the VAO for the screen
		screen.Bind();

		corners.Bind(Buffer::Target::Array);
		{
			GLfloat screen_verts[8] = {
				-1.0f, -1.0f,
				-1.0f,  1.0f,
				 1.0f, -1.0f,
				 1.0f,  1.0f
			};
			Buffer::Data(Buffer::Target::Array, 8, screen_verts);
			VertexAttribArray attr(dof_prog, "Position");
			attr.Setup<Vec2f>();
			attr.Enable();
		}

		Texture::Active(0);
		UniformSampler(dof_prog, "ColorTex").Set(0);
		{
			auto bound_tex = Bind(color_tex, Texture::Target::Rectangle);
			bound_tex.MinFilter(TextureMinFilter::Linear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::ClampToEdge);
			bound_tex.WrapT(TextureWrap::ClampToEdge);
			bound_tex.Image2D(
				0,
				PixelDataInternalFormat::RGB,
				width, height,
				0,
				PixelDataFormat::RGB,
				PixelDataType::UnsignedByte,
				nullptr
			);
		}

		Texture::Active(1);
		UniformSampler(dof_prog, "DepthTex").Set(1);
		{
			auto bound_tex = Bind(depth_tex, Texture::Target::Rectangle);
			bound_tex.MinFilter(TextureMinFilter::Linear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::ClampToEdge);
			bound_tex.WrapT(TextureWrap::ClampToEdge);
			bound_tex.Image2D(
				0,
				PixelDataInternalFormat::DepthComponent,
				width, height,
				0,
				PixelDataFormat::DepthComponent,
				PixelDataType::Float,
				nullptr
			);
		}

		{
			auto bound_fbo = Bind(
				fbo,
				Framebuffer::Target::Draw
			);
			bound_fbo.AttachTexture(
				FramebufferAttachment::Color,
				color_tex,
				0
			);
			bound_fbo.AttachTexture(
				FramebufferAttachment::Depth,
				depth_tex,
				0
			);
		}

		//
		gl.ClearColor(0.9f, 0.9f, 0.9f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);
		gl.DepthFunc(CompareFn::LEqual);
		gl.Enable(Capability::LineSmooth);
		gl.BlendFunc(BlendFn::SrcAlpha, BlendFn::OneMinusSrcAlpha);
	}
Example #17
0
ImageStack::ImageStack( const Image2D& p ) {
    fn = p.frame_number();
    planes_.push_back(p);
    background_.push_back(Image2D());
}
Example #18
0
void ImageStack::push_back( const Plane& p ) 
{
    planes_.push_back( p );
    background_.push_back( Image2D() );
}
	SmokeExample(void)
	 : emitters(
		{
			{
				{
					{-20.0f, -10.0f,  10.0f},
					{ 20.0f,   0.0f, -20.0f},
					{ 20.0f,  10.0f,  20.0f},
					{-20.0f,   0.0f, -10.0f}
				}, 15.0, 200.0
			},
			{
				{
					{ 30.0f,   0.0f,   5.0f},
					{-30.0f,   0.0f,  -5.0f},
					{-20.0f,  20.0f,   5.0f},
					{ 20.0f, -10.0f,  -5.0f}
				}, 17.0, 200.0
			},
		}
	), vs(ShaderType::Vertex, "Vertex")
	 , gs(ShaderType::Geometry, "Geometry")
	 , fs(ShaderType::Fragment, "Fragment")
	 , projection_matrix(prog, "ProjectionMatrix")
	 , camera_matrix(prog, "CameraMatrix")
	 , light_cam_pos(prog, "LightCamPos")
	{
		// Set the vertex shader source
		vs.Source(
			"#version 330\n"
			"uniform mat4 CameraMatrix;"
			"in vec4 Position;"
			"in float Age;"
			"in int Id;"
			"out float vertAge;"
			"out int vertId;"
			"void main(void)"
			"{"
			"	gl_Position = CameraMatrix * Position;"
			"	vertAge = Age;"
			"	vertId = Id;"
			"}"
		);
		// compile it
		vs.Compile();

		// Set the geometry shader source
		gs.Source(
			"#version 330\n"
			"layout(points) in;"
			"layout(triangle_strip, max_vertices = 4) out;"
			"uniform vec3 LightCamPos;"
			"uniform mat4 ProjectionMatrix;"
			"in float vertAge[];"
			"in int vertId[];"
			"out vec2 geomTexCoord;"
			"out float geomAge;"
			"out float geomLightVal;"
			"out float geomLightBias;"
			"void main(void)"
			"{"
			"	if(vertAge[0] > 1.0) return;"
			"	vec3 pos = gl_in[0].gl_Position.xyz;"
			"	vec3 lightDir = normalize(LightCamPos - pos);"
			"	float s = 0.8, g = 3.0;"
			"	float yo[2] = float[2](-1.0, 1.0);"
			"	float xo[2] = float[2](-1.0, 1.0);"
			"	float angle = vertId[0];"
			"	float cx = cos(angle), sx = sin(angle);"
			"	mat2 rot = mat2(cx, sx, -sx, cx);"
			"	for(int j=0;j!=2;++j)"
			"	for(int i=0;i!=2;++i)"
			"	{"
			"		float xoffs = xo[i]*(1.0+vertAge[0]*g)*s;"
			"		float yoffs = yo[j]*(1.0+vertAge[0]*g)*s;"
			"		vec2 offs = rot*vec2(xoffs, yoffs);"
			"		gl_Position = ProjectionMatrix * vec4("
			"			pos.x-offs.x,"
			"			pos.y-offs.y,"
			"			pos.z,"
			"			1.0"
			"		);"
			"		geomTexCoord = vec2(float(i), float(j));"
			"		geomAge = vertAge[0];"
			"		geomLightVal = lightDir.z;"
			"		geomLightBias = -dot("
			"			normalize(vec3(offs, 0.0)),"
			"			lightDir"
			"		);"
			"		EmitVertex();"
			"	}"
			"	EndPrimitive();"
			"}"
		);
		// compile it
		gs.Compile();

		// set the fragment shader source
		fs.Source(
			"#version 330\n"
			"uniform sampler2D SmokeTex;"
			"in vec2 geomTexCoord;"
			"in float geomAge;"
			"in float geomLightVal;"
			"in float geomLightBias;"
			"out vec4 fragColor;"
			"void main(void)"
			"{"
			"	vec3 c = texture(SmokeTex, geomTexCoord).rgb;"
			"	float depth = c.g - c.r;"
			"	if(depth == 0.0) discard;"
			"	float density = min(depth * c.b * 2.0, 1.0);"
			"	float intensity = min("
			"		max("
			"			geomLightVal*0.5+"
			"			geomLightBias,"
			"			0.0"
			"		)+max("
			"			-geomLightVal*"
			"			(1.0 - density)*"
			"			geomLightBias * 5.0,"
			"			0.0"
			"		),"
			"		1.0"
			"	) + 0.1;"
			"	fragColor = vec4("
			"		intensity,"
			"		intensity,"
			"		intensity,"
			"		(1.0 - geomAge)*density"
			"	);"
			"}"
		);
		// compile it
		fs.Compile();

		// attach the shaders to the program
		prog.AttachShader(vs);
		prog.AttachShader(gs);
		prog.AttachShader(fs);
		// link and use it
		prog.Link();
		prog.Use();

		// bind the VAO for the particles
		particles.Bind();

		// bind the VBO for the particle positions
		pos_buf.Bind(Buffer::Target::Array);
		{
			Buffer::Data(Buffer::Target::Array, positions);
			VertexAttribArray attr(prog, "Position");
			attr.Setup<Vec3f>();
			attr.Enable();
		}

		// bind the VBO for the particle ages
		age_buf.Bind(Buffer::Target::Array);
		{
			Buffer::Data(Buffer::Target::Array, ages);
			VertexAttribArray attr(prog, "Age");
			attr.Setup<GLfloat>();
			attr.Enable();
		}

		// bind the VBO for the particle identifiers
		id_buf.Bind(Buffer::Target::Array);
		{
			Buffer::Data(Buffer::Target::Array, ids);
			VertexAttribArray attr(prog, "Id");
			attr.Setup<GLint>();
			attr.Enable();
		}

		Texture::Active(0);
		UniformSampler(prog, "SmokeTex").Set(0);
		{
			auto bound_tex = Bind(smoke_tex, Texture::Target::_2D);
			bound_tex.Image2D(
				images::Cloud2D(
					images::Cloud(
						128, 128, 128,
						Vec3f(0.1f, -0.5f, 0.3f),
						0.5f
					)
				)
			);
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.BorderColor(Vec4f(0.0f, 0.0f, 0.0f, 0.0f));
			bound_tex.WrapS(TextureWrap::ClampToBorder);
			bound_tex.WrapT(TextureWrap::ClampToBorder);
		}
		//
		gl.ClearColor(0.0f, 0.1f, 0.2f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);
		gl.Enable(Capability::Blend);
		gl.BlendFunc(BlendFn::SrcAlpha, BlendFn::OneMinusSrcAlpha);
	}