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C++ GLsizei函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中GLsizei函数的典型用法代码示例。如果您正苦于以下问题：C++ GLsizei函数的具体用法？C++ GLsizei怎么用？C++ GLsizei使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了GLsizei函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: set_active

	void GL1GraphicContextProvider::set_viewport(const Rectf &viewport)
	{
		set_active();
		glViewport(
			GLsizei(viewport.left),
			GLsizei(viewport.top),
			GLsizei(viewport.right - viewport.left),
			GLsizei(viewport.bottom - viewport.top));
	}
开发者ID:ArtHome12，项目名称:ClanLib，代码行数:9，代码来源:gl1_graphic_context_provider.cpp


示例2: initTexture

bool initTexture()
{
	glGenTextures(texture::MAX, TextureName);

	gli::texture2D Texture(gli::loadStorageDDS(glf::DATA_DIRECTORY + TEXTURE_DIFFUSE));
	assert(!Texture.empty());

	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

	glActiveTexture(GL_TEXTURE0);
	glBindTexture(GL_TEXTURE_2D, TextureName[texture::DIFFUSE]);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_GREEN);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_BLUE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ALPHA);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, GLint(Texture.levels() - 1));
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glTexStorage2D(GL_TEXTURE_2D, GLint(Texture.levels()), GL_RGBA8, GLsizei(Texture[0].dimensions().x), GLsizei(Texture[0].dimensions().y));
	for(gli::texture2D::size_type Level = 0; Level < Texture.levels(); ++Level)
	{
		glTexSubImage2D(
			GL_TEXTURE_2D, 
			GLint(Level), 
			0, 0, 
			GLsizei(Texture[Level].dimensions().x), 
			GLsizei(Texture[Level].dimensions().y), 
			GL_BGR, GL_UNSIGNED_BYTE, 
			Texture[Level].data());
	}
	
	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);

	GLint TextureBufferOffset(0);
	glGetIntegerv(
		GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT,
		&TextureBufferOffset);
	GLint TextureBufferRange = glm::max(GLint(PositionSize), TextureBufferOffset);

	glBindTexture(GL_TEXTURE_BUFFER, TextureName[texture::POSITION_INPUT]);
	glTexBufferRange(GL_TEXTURE_BUFFER, GL_RGBA32F, BufferName[buffer::POSITION_INPUT], 0, TextureBufferRange);
	glBindTexture(GL_TEXTURE_BUFFER, TextureName[texture::TEXCOORD_INPUT]);
	glTexBufferRange(GL_TEXTURE_BUFFER, GL_RGBA32F, BufferName[buffer::TEXCOORD_INPUT], 0, TextureBufferRange);
	glBindTexture(GL_TEXTURE_BUFFER, TextureName[texture::COLOR_INPUT]);
	glTexBufferRange(GL_TEXTURE_BUFFER, GL_RGBA32F, BufferName[buffer::COLOR_INPUT], 0, TextureBufferRange);
	glBindTexture(GL_TEXTURE_BUFFER, TextureName[texture::POSITION_OUTPUT]);
	glTexBufferRange(GL_TEXTURE_BUFFER, GL_RGBA32F, BufferName[buffer::POSITION_OUTPUT], 0, TextureBufferRange);
	glBindTexture(GL_TEXTURE_BUFFER, TextureName[texture::TEXCOORD_OUTPUT]);
	glTexBufferRange(GL_TEXTURE_BUFFER, GL_RGBA32F, BufferName[buffer::TEXCOORD_OUTPUT], 0, TextureBufferRange);
	glBindTexture(GL_TEXTURE_BUFFER, TextureName[texture::COLOR_OUTPUT]);
	glTexBufferRange(GL_TEXTURE_BUFFER, GL_RGBA32F, BufferName[buffer::COLOR_OUTPUT], 0, TextureBufferRange);
	glBindTexture(GL_TEXTURE_BUFFER, 0);

	return true;
}
开发者ID:alexa-infra，项目名称:ogl-samples，代码行数:56，代码来源:gl-430-program-compute-image.cpp


示例3: adjustViewport

void adjustViewport()
{
	float scaleX, scaleY;
	int winWidth = glutGet(GLUT_WINDOW_WIDTH);
	int winHeight = glutGet(GLUT_WINDOW_HEIGHT);
	getAspectRatioAdjustment(XY_ASPECT, float(winWidth) / float(winHeight), &scaleX, &scaleY);
	GLsizei vpWidth = GLsizei(winWidth * scaleX);
	GLsizei vpHeight = GLsizei(winHeight * scaleY);
	glViewport((winWidth-vpWidth)/2, (winHeight-vpHeight)/2, vpWidth, vpHeight);
}
开发者ID:avi-jit，项目名称:kinect-ultra，代码行数:10，代码来源:util.cpp


示例4: png_set_read_fn

void ogl::texture::load_png(const void *buf, size_t len, std::vector<GLubyte>& p)
{
    // Initialize all PNG import data structures.

    png_structp rp = 0;
    png_infop   ip = 0;
    png_bytep  *bp = 0;

    if (!(rp = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0)))
        throw std::runtime_error("Failure creating PNG read structure");

    if (!(ip = png_create_info_struct(rp)))
        throw std::runtime_error("Failure creating PNG info structure");

    // Initialize the user-defined IO structure.

    struct png_user_io user;

    user.buf = (png_bytep)  buf;
    user.len = (png_size_t) len;

    png_set_read_fn(rp, &user, png_user_read);

    // Enable the default PNG error handler.

    if (setjmp(png_jmpbuf(rp)) == 0)
    {
        // Read the PNG header.

        png_read_png(rp, ip, PNG_TRANSFORM_EXPAND   |
                             PNG_TRANSFORM_PACKING  |
                             PNG_TRANSFORM_STRIP_16 |
                             PNG_TRANSFORM_SWAP_ENDIAN, 0);

        // Extract image properties.

        w = GLsizei(png_get_image_width (rp, ip));
        h = GLsizei(png_get_image_height(rp, ip));
        c = GLsizei(png_get_channels    (rp, ip));

        p.resize(w * h * c);

        // Read the pixel data.

        if ((bp = png_get_rows(rp, ip)))

            for (GLsizei i = 0, j = h - 1; i < h; ++i, --j)
                memcpy(&p[w * c * i], bp[j], (w * c));
    }

    // Release all resources.

    png_destroy_read_struct(&rp, &ip, 0);
}
开发者ID:rlk，项目名称:thumb，代码行数:54，代码来源:ogl-texture.cpp


示例5: initTexture

	bool initTexture()
	{
		bool Validated(true);

		gli::texture2d Texture(gli::load_dds((getDataDirectory() + TEXTURE_DIFFUSE).c_str()));
		assert(!Texture.empty());

		glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

		glGenTextures(texture::MAX, &TextureName[0]);

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::DIFFUSE]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, GLint(Texture.levels() - 1));
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

		for(std::size_t Level = 0; Level < Texture.levels(); ++Level)
		{
			glCompressedTexImage2D(GL_TEXTURE_2D,
				GLint(Level),
				GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
				GLsizei(Texture[Level].extent().x), 
				GLsizei(Texture[Level].extent().y), 
				0, 
				GLsizei(Texture[Level].size()), 
				Texture[Level].data());
		}
	
		glm::ivec2 WindowSize(this->getWindowSize() * this->FramebufferScale);

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::COLORBUFFER]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexImage2D(GL_TEXTURE_2D, GLint(0), GL_RGBA8, GLsizei(WindowSize.x), GLsizei(WindowSize.y), 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::DEPTHBUFFER]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
		glTexImage2D(GL_TEXTURE_2D, GLint(0), GL_DEPTH_COMPONENT24, GLsizei(WindowSize.x), GLsizei(WindowSize.y), 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr);

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::STENCILBUFFER]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
		glTexImage2D(GL_TEXTURE_2D, GLint(0), GL_STENCIL_INDEX8, GLsizei(WindowSize.x), GLsizei(WindowSize.y), 0, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, nullptr);

		glPixelStorei(GL_UNPACK_ALIGNMENT, 4);

		return Validated;
	}
开发者ID:byhj，项目名称:ogl-samples，代码行数:58，代码来源:gl-440-fbo-depth-stencil.cpp


示例6: initTexture

	bool initTexture()
	{
		bool Validated(true);

		gli::gl GL(gli::gl::PROFILE_GL32);
		gli::texture2d Texture(gli::load_dds((getDataDirectory() + TEXTURE_DIFFUSE).c_str()));
		assert(!Texture.empty());

		glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

		glGenTextures(texture::MAX, &TextureName[0]);

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::DIFFUSE]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, GLint(Texture.levels() - 1));
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

		gli::gl::format const Format = GL.translate(Texture.format(), Texture.swizzles());
		for (gli::texture2d::size_type Level = 0; Level < Texture.levels(); ++Level)
		{
			glTexImage2D(GL_TEXTURE_2D, static_cast<GLint>(Level),
				Format.Internal,
				static_cast<GLsizei>(Texture[Level].extent().x), static_cast<GLsizei>(Texture[Level].extent().y), 0,
				Format.External, Format.Type,
				Texture[Level].data());
		}

		glm::ivec2 WindowSize(this->getWindowSize() * this->FramebufferScale);

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::COLORBUFFER]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexImage2D(GL_TEXTURE_2D, GLint(0), GL_RGBA8, GLsizei(WindowSize.x), GLsizei(WindowSize.y), 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::RENDERBUFFER]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
		glTexImage2D(GL_TEXTURE_2D, GLint(0), GL_DEPTH_COMPONENT24, GLsizei(WindowSize.x), GLsizei(WindowSize.y), 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL);

		glPixelStorei(GL_UNPACK_ALIGNMENT, 4);

		return Validated;
	}
开发者ID:g-truc，项目名称:ogl-samples，代码行数:51，代码来源:gl-320-fbo-readpixels-async.cpp


示例7: initTexture

bool initTexture()
{
	bool Validated(true);

	gli::texture2D Texture(gli::loadStorageDDS(glf::DATA_DIRECTORY + TEXTURE_DIFFUSE));
	assert(!Texture.empty());

	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

	glBindBuffer(GL_PIXEL_PACK_BUFFER, BufferName[buffer::VERTEX]);

	glGenTextures(1, &TextureName);
	glActiveTexture(GL_TEXTURE0);
	glBindTexture(GL_TEXTURE_2D, TextureName);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_GREEN);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_BLUE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ALPHA);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, GLint(Texture.levels() - 1));
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

	glTexStorage2D(GL_TEXTURE_2D,
		GLint(Texture.levels()),
		gli::internal_format(Texture.format()),
		GLsizei(Texture.dimensions().x), GLsizei(Texture.dimensions().y));

	for(gli::texture2D::size_type Level(0); Level < Texture.levels(); ++Level)
	{
		glTexSubImage2D(
			GL_TEXTURE_2D,
			GLint(Level),
			0, 0,
			GLsizei(Texture[Level].dimensions().x),
			GLsizei(Texture[Level].dimensions().y),
			gli::external_format(Texture.format()),
			gli::type_format(Texture.format()),
			Texture[Level].data());
	}

	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);

	// Query the texture handle and make the texture resident
	TextureHandle = glGetTextureHandleNV(TextureName);
	glMakeTextureHandleResidentNV(TextureHandle);

	glBindTexture(GL_TEXTURE_2D, 0);

	return Validated;
}
开发者ID:Daft-Freak，项目名称:vogl，代码行数:51，代码来源:gl-420-texture-bindless-nv.cpp


示例8: initTexture

	bool initTexture()
	{
		bool Validated(true);

		gli::texture2d Texture(gli::load_dds((getDataDirectory() + TEXTURE_DIFFUSE).c_str()));
		assert(!Texture.empty());

		glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

		glGenTextures(texture::MAX, &TextureName[0]);

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::DIFFUSE]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, GLint(Texture.levels() - 1));
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
		
		for(std::size_t Level = 0; Level < Texture.levels(); ++Level)
		{
			glCompressedTexImage2D(GL_TEXTURE_2D,
				GLint(Level),
				GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
				GLsizei(Texture[Level].extent().x),
				GLsizei(Texture[Level].extent().y),
				0, 
				GLsizei(Texture[Level].size()),
				Texture[Level].data());
		}
		
		glm::ivec2 WindowSize(this->getWindowSize());

		glActiveTexture(GL_TEXTURE0);
		glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, TextureName[texture::MULTISAMPLE]);
		
		this->checkError("initTexture 1");
		
		glTexParameteri(GL_TEXTURE_2D_MULTISAMPLE, GL_TEXTURE_BASE_LEVEL, 0);
		glTexParameteri(GL_TEXTURE_2D_MULTISAMPLE, GL_TEXTURE_MAX_LEVEL, 0);
		
		this->checkError("initTexture 2");
		
		glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, 4, GL_DEPTH_COMPONENT24, GLsizei(WindowSize.x), GLsizei(WindowSize.y), GL_TRUE);
		
		glPixelStorei(GL_UNPACK_ALIGNMENT, 4);

		return Validated && this->checkError("initTexture");
	}
开发者ID:byhj，项目名称:ogl-samples，代码行数:50，代码来源:gl-320-fbo-depth-multisample.cpp


示例9: GL_RET_CALL

// ************************************************************************* //
ScissorRect::ScissorRect( float _x, float _y, float _w, float _h )
{
	// Store old state to restore it later
	m_wasEnabled = GL_RET_CALL(glIsEnabled, GL_SCISSOR_TEST) == GL_TRUE;
	GL_CALL(glGetIntegerv, GL_SCISSOR_BOX, m_previousRect); // TODO: Avoid glgetter

	IVec2 size = Device::GetBackbufferSize();
	// Translate coordinates to absolute pixel coordinates and set directly.
	GL_CALL(glScissor, GLint((_x * 0.5f + 0.5f) * size[0]),
			   GLint((_y * 0.5f + 0.5f) * size[1]),
			   GLsizei(_w * 0.5f * size[0]),
			   GLsizei(_h * 0.5f * size[1]) );

	GL_CALL(glEnable, GL_SCISSOR_TEST);
}
开发者ID:Jojendersie，项目名称:Monolith，代码行数:16，代码来源:scissor.cpp


示例10: drawElementsInstancedBaseVertex

inline void drawElementsInstancedBaseVertex(
	DrawElementsInstancedBaseVertexMode mode,
	GLsizei count,
	DrawElementsInstancedBaseVertexType type,
	GLvoid *indices,
	GLsizei primcount,
	GLint basevertex) {
	glDrawElementsInstancedBaseVertex(
		GLenum(mode),
		GLsizei(count),
		GLenum(type),
		(GLvoid*)(indices),
		GLsizei(primcount),
		GLint(basevertex));
}
开发者ID:ngzHappy，项目名称:OpenGL45Book，代码行数:15，代码来源:DrawFunctions.hpp


示例11: render

	bool render()
	{
		glm::vec2 WindowSize(this->getWindowSize());

		{
			glBindBuffer(GL_UNIFORM_BUFFER, BufferName[buffer::TRANSFORM]);
			glm::mat4* Pointer = (glm::mat4*)glMapBufferRange(
				GL_UNIFORM_BUFFER, 0,	sizeof(glm::mat4),
				GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);

			glm::mat4 Projection = glm::perspective(glm::pi<float>() * 0.25f, WindowSize.x * 0.5f / WindowSize.y, 0.1f, 100.0f);
			glm::mat4 Model = glm::mat4(1.0f);
		
			*Pointer = Projection * this->view() * Model;

			// Make sure the uniform buffer is uploaded
			glUnmapBuffer(GL_UNIFORM_BUFFER);
		}

		float Depth(1.0f);
		glClearBufferfv(GL_DEPTH, 0, &Depth);
		glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 0.5f, 0.0f, 1.0f)[0]);

		glActiveTexture(GL_TEXTURE0 + sementics::sampler::RGB8);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::RGB8]);

		glActiveTexture(GL_TEXTURE0 + sementics::sampler::DXT1);
		glBindTexture(GL_TEXTURE_2D, TextureName[texture::DXT1]);

		glBindProgramPipeline(PipelineName);
		glBindBufferBase(GL_UNIFORM_BUFFER, semantic::uniform::TRANSFORM0, BufferName[buffer::TRANSFORM]);
		glBindVertexArray(VertexArrayName);

		glUseProgram(ProgramName);
		std::vector<GLuint> Index(2);
		Index[0] = sementics::sampling::RGB8;
		Index[1] = sementics::sampling::DXT1;
		
		glViewportIndexedf(0, 0, 0, GLfloat(WindowSize.x) / 2.0f, GLfloat(WindowSize.y));
		glUniformSubroutinesuiv(GL_FRAGMENT_SHADER, GLsizei(1), &Index[0]);
		glDrawElementsInstancedBaseVertex(GL_TRIANGLES, ElementCount, GL_UNSIGNED_INT, nullptr, 1, 0);

		glViewportIndexedf(0, GLfloat(WindowSize.x) / 2.0f, 0, GLfloat(WindowSize.x) / 2.0f, GLfloat(WindowSize.y));
		glUniformSubroutinesuiv(GL_FRAGMENT_SHADER, GLsizei(1), &Index[1]);
		glDrawElementsInstancedBaseVertex(GL_TRIANGLES, ElementCount, GL_UNSIGNED_INT, nullptr, 1, 0);
		
		return true;
	}
开发者ID:h3rb，项目名称:ogl-samples，代码行数:48，代码来源:gl-430-program-subroutine.cpp


示例12: glBindVertexArray

    void ScreenText::draw(GLContext* context)
    {
      if(!usedSize_)
	return;

#ifdef SCIGMA_USE_OPENGL_3_2
      glBindVertexArray(vertexArray_);
#else
      glBindBuffer(GL_ARRAY_BUFFER,glBuffer_);   
      prepare_attributes();
#endif    

      glUniform4fv(fColorLocation_,1,fColor_);
      glUniform4fv(bColorLocation_,1,bColor_);
      glUniform2fv(offsetLocation_,1,offset_);

      switch(screenAnchor_)
	{
	case SCREEN_ANCHOR_BOTTOM_LEFT:
	  glUniform4f(screenAnchorLocation_,-1,-1,0,0);break;
	case SCREEN_ANCHOR_BOTTOM_RIGHT:
	  glUniform4f(screenAnchorLocation_,1,-1,0,0);break;
	case SCREEN_ANCHOR_TOP_RIGHT:
	  glUniform4f(screenAnchorLocation_,1,1,0,0);;break;
	case SCREEN_ANCHOR_TOP_LEFT:
	  glUniform4f(screenAnchorLocation_,-1,1,0,0);break;
	}
     
      glBindTexture(GL_TEXTURE_2D,font_.textureID);
      glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
      glDrawArrays(GL_TRIANGLES, 0, GLsizei(usedSize_/4));

      GLERR;
    }
开发者ID:rhoelzel，项目名称:scigma，代码行数:34，代码来源:screentext.cpp


示例13: drawFillCircle

// 塗り潰し円
// center_x, center_y 円の中心位置
// radius_x, radius_y 半径(横と縦)
// division           円の分割数(数値が大きいと滑らかな円になる)
// color              色
void drawFillCircle(const float center_x, const float center_y,
                    const float radius_x, const float radius_y,
                    const int division,
                    const Color& color) {
  // 色を設定
  color.setToGl();

  // 頂点データを生成
  std::vector<GLfloat> vtx;
  vtx.reserve(division * 2);
  vtx.push_back(center_x);
  vtx.push_back(center_y);
  for (int i = 0; i <= division; ++i) {
    float r = (M_PI * 2.0 * i) / division;

    // 反時計回りが表面となる
    vtx.push_back(radius_x * -std::sin(r) + center_x);
    vtx.push_back(radius_y * std::cos(r) + center_y);
  }

  glVertexPointer(2, GL_FLOAT, 0, &vtx[0]);
  
  glEnableClientState(GL_VERTEX_ARRAY);
  
  glDrawArrays(GL_TRIANGLE_FAN, 0, GLsizei(vtx.size() / 2));
  
  glDisableClientState(GL_VERTEX_ARRAY);
}
开发者ID:tek-nishi，项目名称:FadeTest，代码行数:33，代码来源:graph.cpp


示例14: drawCircle

// 円を描画
// center_x, center_y 円の中心位置
// radius_x, radius_y 半径(横と縦)
// division           円の分割数(数値が大きいと滑らかな円になる)
// line_width         線幅
// color              色
void drawCircle(const float center_x, const float center_y,
                const float radius_x, const float radius_y,
                const int division,
                const float line_width,
                const Color& color) {
  // 線分の太さを指示
  glLineWidth(line_width);

  // 色を設定
  color.setToGl();

  // 頂点データを生成
  std::vector<GLfloat> vtx;
  vtx.reserve(division * 2);
  for (int i = 0; i < division; ++i) {
    float r = (M_PI * 2.0 * i) / division;

    vtx.push_back(radius_x * std::sin(r) + center_x);
    vtx.push_back(radius_y * std::cos(r) + center_y);
  }

  glVertexPointer(2, GL_FLOAT, 0, &vtx[0]);
  
  glEnableClientState(GL_VERTEX_ARRAY);
  
  glDrawArrays(GL_LINE_LOOP, 0, GLsizei(vtx.size() / 2));
  
  glDisableClientState(GL_VERTEX_ARRAY);
}
开发者ID:tek-nishi，项目名称:FadeTest，代码行数:35，代码来源:graph.cpp


示例15: PrintShaderWarning

bool PickingShaderForPointCloud::PrepareBinding(const Geometry &geometry,
        const RenderOption &option, const ViewControl &view,
        std::vector<Eigen::Vector3f> &points,
        std::vector<float> &indices)
{
    if (geometry.GetGeometryType() !=
            Geometry::GeometryType::PointCloud) {
        PrintShaderWarning("Rendering type is not PointCloud.");
        return false;
    }
    const PointCloud &pointcloud = (const PointCloud &)geometry;
    if (pointcloud.HasPoints() == false) {
        PrintShaderWarning("Binding failed with empty pointcloud.");
        return false;
    }
    points.resize(pointcloud.points_.size());
    indices.resize(pointcloud.points_.size());
    for (size_t i = 0; i < pointcloud.points_.size(); i++) {
        const auto &point = pointcloud.points_[i];
        points[i] = point.cast<float>();
        indices[i] = (float)i;
    }
    draw_arrays_mode_ = GL_POINTS;
    draw_arrays_size_ = GLsizei(points.size());
    return true;
}
开发者ID:rvbust，项目名称:Open3D，代码行数:26，代码来源:PickingShader.cpp


示例16: render

    bool render()
    {
        glm::vec2 WindowSize(this->getWindowSize());

        {
            float Aspect = (WindowSize.x * 0.33f) / (WindowSize.y * 0.50f);
            glm::mat4 Projection = glm::perspective(glm::pi<float>() * 0.25f, Aspect, 0.1f, 100.0f);
            glm::mat4 MVP = Projection * this->view() * glm::mat4(1.0f);

            *UniformPointer = MVP;
        }

        glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 0.5f, 0.0f, 1.0f)[0]);

        glBindProgramPipeline(PipelineName);
        glBindBuffersBase(GL_UNIFORM_BUFFER, semantic::uniform::TRANSFORM0, 1, &BufferName[buffer::TRANSFORM]);
        glBindTextures(semantic::sampler::DIFFUSE, 1, &TextureName);
        glBindVertexArray(VertexArrayName);
        glBindVertexBuffer(semantic::buffer::STATIC, BufferName[buffer::VERTEX], 0, GLsizei(sizeof(vertex)));

        for(std::size_t Index = 0; Index < viewport::MAX; ++Index)
        {
            glViewportIndexedf(0,
                               Viewport[Index].x,
                               Viewport[Index].y,
                               Viewport[Index].z,
                               Viewport[Index].w);

            glBindSamplers(0, 1, &SamplerName[Index]);
            glDrawArraysInstanced(GL_TRIANGLES, 0, VertexCount, 1);
        }

        return true;
    }
开发者ID:h3rb，项目名称:ogl-samples，代码行数:34，代码来源:gl-440-sampler-wrap.cpp


示例17: processor

void NVprPathRendererState::validate()
{
    if (valid) {
        return;
    }

    NVprPathCacheProcessor processor(owner, path, fill_rule);
    owner->processSegments(processor);
    if (owner->style.do_stroke) {
        glPathParameteriNV(path, GL_PATH_JOIN_STYLE_NV, lineJoinConverter(owner));
        glPathParameteriNV(path, GL_PATH_END_CAPS_NV, lineCapConverter(owner));
        glPathParameterfNV(path, GL_PATH_STROKE_WIDTH_NV, owner->style.stroke_width);
        glPathParameterfNV(path, GL_PATH_MITER_LIMIT_NV, owner->style.miter_limit);
        if (owner->style.dash_array.size()) {
            glPathDashArrayNV(path, GLsizei(owner->style.dash_array.size()), &owner->style.dash_array[0]);
            glPathParameteriNV(path, GL_PATH_DASH_CAPS_NV, lineCapConverter(owner));
            glPathParameterfNV(path, GL_PATH_DASH_OFFSET_NV, owner->style.dash_offset);
            GLenum dash_offset_reset = (owner->style.dash_phase == PathStyle::MOVETO_RESETS)
                ? GL_MOVE_TO_RESETS_NV
                : GL_MOVE_TO_CONTINUES_NV;
            glPathParameteriNV(path, GL_PATH_DASH_OFFSET_RESET_NV, dash_offset_reset);
        } else {
            glPathDashArrayNV(path, 0, NULL);
        }
    }
    valid = true;
}
开发者ID:ghub，项目名称:NVprSDK，代码行数:27，代码来源:renderer_nvpr_path.cpp


示例18: initDataItem

void Raycaster::initDataItem(Raycaster::DataItem* dataItem) const
	{
	/* Calculate the appropriate volume texture's size: */
	if(dataItem->hasNPOTDTextures)
		{
		/* Use the data size directly: */
		for(int i=0;i<3;++i)
			dataItem->textureSize[i]=dataSize[i];
		}
	else
		{
		/* Pad to the next power of two: */
		for(int i=0;i<3;++i)
			for(dataItem->textureSize[i]=1;dataItem->textureSize[i]<GLsizei(dataSize[i]);dataItem->textureSize[i]<<=1)
				;
		}
	
	/* Calculate the texture coordinate box for trilinear interpolation and the transformation from model space to data space: */
	Point tcMin,tcMax;
	for(int i=0;i<3;++i)
		{
		tcMin[i]=Scalar(0.5)/Scalar(dataItem->textureSize[i]);
		tcMax[i]=(Scalar(dataSize[i])-Scalar(0.5))/Scalar(dataItem->textureSize[i]);
		Scalar scale=(tcMax[i]-tcMin[i])/domain.getSize(i);
		dataItem->mcScale[i]=GLfloat(scale);
		dataItem->mcOffset[i]=GLfloat(tcMin[i]-domain.min[i]*scale);
		}
	dataItem->texCoords=Box(tcMin,tcMax);
	}
开发者ID:VisualIdeation，项目名称:ATR-Vessel，代码行数:29，代码来源:Raycaster.cpp


示例19: initTexture

	bool initTexture()
	{
		gli::texture2d Texture(gli::load_dds((getDataDirectory() + TEXTURE_DIFFUSE).c_str()));
		assert(!Texture.empty());

		glm::uvec2 FramebufferSize(this->getWindowSize() / 16u);

		glCreateTextures(GL_TEXTURE_2D_ARRAY, texture::MAX, &TextureName[0]);
		glTextureParameteri(TextureName[0], GL_TEXTURE_BASE_LEVEL, 0);
		glTextureParameteri(TextureName[0], GL_TEXTURE_MAX_LEVEL, 0);
		glTextureParameteri(TextureName[0], GL_TEXTURE_MIN_FILTER, GL_NEAREST);
		glTextureParameteri(TextureName[0], GL_TEXTURE_MAG_FILTER, GL_NEAREST);
		glTextureStorage3D(TextureName[0], GLint(1), GL_RGBA8, GLsizei(FramebufferSize.x), GLsizei(FramebufferSize.y), 1);

		return true;
	}
开发者ID:g-truc，项目名称:ogl-samples，代码行数:16，代码来源:gl-500-conservative-raster-nv.cpp


示例20: SetBounds

/// @brief Sets the render bounds
/// @param fX Screen x coordinate, in [0, 1]
/// @param fY Screen y coordinate, in [0, 1]
/// @param fW Screen width, in [0, 1]
/// @param fH Screen height, in [0, 1]
/// @return 0 on failure, non-0 for success
/// @note Tested
int SetBounds (float fX, float fY, float fW, float fH)
{
	Graphics::Main & g = Graphics::Main::Get();

	fX *= g.mResW;
	fY = (1.0f - fY - fH) * g.mResH;
	fW *= g.mResW;
	fH *= g.mResH;

	fX = floorf(fX), fY = floorf(fY);
	fW = ceilf(fW), fH = ceilf(fH);

	glScissor(GLint(fX), GLint(fY), GLsizei(fW), GLsizei(fH));

	return 1;
}
开发者ID:ggcrunchy，项目名称:ui-edit-v2，代码行数:23，代码来源:Graphics.cpp



注：本文中的GLsizei函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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