GLUSboolean initWavefront(GLUSfloat viewMatrix[16], struct LightProperties* light) { // Color material with white specular color. struct MaterialProperties material = { { 0.0f, 1.0f, 1.0f, 1.0f }, { 0.0f, 1.0f, 1.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f }, 20.0f }; GLUStextfile vertexSource; GLUStextfile fragmentSource; GLUSshape wavefrontObj; g_viewMatrix = viewMatrix; g_light = light; // glusFileLoadText("shader/phong.vert.glsl", &vertexSource); glusFileLoadText("shader/phong.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_projectionMatrixLocation = glGetUniformLocation(g_program.program, "u_projectionMatrix"); g_modelViewMatrixLocation = glGetUniformLocation(g_program.program, "u_modelViewMatrix"); g_normalMatrixLocation = glGetUniformLocation(g_program.program, "u_normalMatrix"); g_lightLocations.directionLocation = glGetUniformLocation(g_program.program, "u_light.direction"); g_lightLocations.ambientColorLocation = glGetUniformLocation(g_program.program, "u_light.ambientColor"); g_lightLocations.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_light.diffuseColor"); g_lightLocations.specularColorLocation = glGetUniformLocation(g_program.program, "u_light.specularColor"); g_material.ambientColorLocation = glGetUniformLocation(g_program.program, "u_material.ambientColor"); g_material.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_material.diffuseColor"); g_material.specularColorLocation = glGetUniformLocation(g_program.program, "u_material.specularColor"); g_material.specularExponentLocation = glGetUniformLocation(g_program.program, "u_material.specularExponent"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); // // Use a helper function to load an wavefront object file. glusShapeLoadWavefront("teapot.obj", &wavefrontObj); g_numberVertices = wavefrontObj.numberVertices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) wavefrontObj.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) wavefrontObj.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glusShapeDestroyf(&wavefrontObj); // glUseProgram(g_program.program); glGenVertexArrays(1, &g_vao); glBindVertexArray(g_vao); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); // glusVector3Normalizef(g_light->direction); // Set up light ... // Direction is set later glUniform4fv(g_lightLocations.ambientColorLocation, 1, g_light->ambientColor); glUniform4fv(g_lightLocations.diffuseColorLocation, 1, g_light->diffuseColor); glUniform4fv(g_lightLocations.specularColorLocation, 1, g_light->specularColor); // ... and material values. glUniform4fv(g_material.ambientColorLocation, 1, material.ambientColor); glUniform4fv(g_material.diffuseColorLocation, 1, material.diffuseColor); glUniform4fv(g_material.specularColorLocation, 1, material.specularColor); glUniform1f(g_material.specularExponentLocation, material.specularExponent); // glClearColor(0.0f, 0.0f, 0.0f, 0.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); return GLUS_TRUE; }
GLUSboolean init(GLUSvoid) { // This is a white light. struct LightProperties light = { { 1.0f, 1.0f, 1.0f }, { 0.3f, 0.3f, 0.3f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } }; GLUStextfile vertexSource; GLUStextfile geometrySource; GLUStextfile fragmentSource; GLUStgaimage image; GLUSshape bunnyShape; // glusFileLoadText("../Example26/shader/ambient_diffuse_texture.vert.glsl", &vertexSource); glusFileLoadText("../Example26/shader/ambient_diffuse_texture.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); glusFileLoadText("../Example26/shader/fur.vert.glsl", &vertexSource); glusFileLoadText("../Example26/shader/fur.geom.glsl", &geometrySource); glusFileLoadText("../Example26/shader/fur.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_programFur, (const GLUSchar**) &vertexSource.text, 0, 0, (const GLUSchar**) &geometrySource.text, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&geometrySource); glusFileDestroyText(&fragmentSource); // g_projectionMatrixLocation = glGetUniformLocation(g_program.program, "u_projectionMatrix"); g_modelViewMatrixLocation = glGetUniformLocation(g_program.program, "u_modelViewMatrix"); g_normalMatrixLocation = glGetUniformLocation(g_program.program, "u_normalMatrix"); g_light.directionLocation = glGetUniformLocation(g_program.program, "u_light.direction"); g_light.ambientColorLocation = glGetUniformLocation(g_program.program, "u_light.ambientColor"); g_light.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_light.diffuseColor"); g_light.specularColorLocation = glGetUniformLocation(g_program.program, "u_light.specularColor"); g_textureLocation = glGetUniformLocation(g_program.program, "u_textureFurColor"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); g_texCoordLocation = glGetAttribLocation(g_program.program, "a_texCoord"); g_projectionMatrixFurLocation = glGetUniformLocation(g_programFur.program, "u_projectionMatrix"); g_modelViewMatrixFurLocation = glGetUniformLocation(g_programFur.program, "u_modelViewMatrix"); g_normalMatrixFurLocation = glGetUniformLocation(g_programFur.program, "u_normalMatrix"); g_lightDirectionFurLocation = glGetUniformLocation(g_programFur.program, "u_lightDirection"); g_textureFurColorLocation = glGetUniformLocation(g_programFur.program, "u_textureFurColor"); g_textureFurStrengthLocation = glGetUniformLocation(g_programFur.program, "u_textureFurStrength"); g_vertexFurLocation = glGetAttribLocation(g_programFur.program, "a_vertex"); g_normalFurLocation = glGetAttribLocation(g_programFur.program, "a_normal"); g_texCoordFurLocation = glGetAttribLocation(g_programFur.program, "a_texCoord"); // // Color texture set up. glusImageLoadTga("tiger.tga", &image); glGenTextures(1, &g_textureFurColor); glBindTexture(GL_TEXTURE_2D, g_textureFurColor); glTexImage2D(GL_TEXTURE_2D, 0, image.format, image.width, image.height, 0, image.format, GL_UNSIGNED_BYTE, image.data); // Mipmap generation is now included in OpenGL 3 and above glGenerateMipmap(GL_TEXTURE_2D); // Trilinear filtering 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_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glBindTexture(GL_TEXTURE_2D, 0); glusImageDestroyTga(&image); // A simple noise texture influences the strength of each fur pixel. glusPerlinCreateNoise2D(&image, 64, 64, 0, 100.0f, 255.0f, 0.5f, 1); glGenTextures(1, &g_textureFurStrength); glBindTexture(GL_TEXTURE_2D, g_textureFurStrength); glTexImage2D(GL_TEXTURE_2D, 0, image.format, image.width, image.height, 0, image.format, GL_UNSIGNED_BYTE, image.data); // Mipmap generation is now included in OpenGL 3 and above glGenerateMipmap(GL_TEXTURE_2D); // Trilinear filtering 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_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glBindTexture(GL_TEXTURE_2D, 0); glusImageDestroyTga(&image); // // Use a helper function to load an wavefront object file. glusShapeLoadWavefront("bunny.obj", &bunnyShape); // This model does not have any texture coordinates, so generate them. glusShapeTexGenByAxesf(&bunnyShape, 2.0f, 0.0f, 2.0f, 0.0f, 0.0f, 0.0f); g_numberVertices = bunnyShape.numberVertices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, bunnyShape.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) bunnyShape.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, bunnyShape.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) bunnyShape.normals, GL_STATIC_DRAW); glGenBuffers(1, &g_texCoordsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_texCoordsVBO); glBufferData(GL_ARRAY_BUFFER, bunnyShape.numberVertices * 2 * sizeof(GLfloat), (GLfloat*) bunnyShape.texCoords, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glusShapeDestroyf(&bunnyShape); // glUseProgram(g_program.program); glGenVertexArrays(1, &g_vao); glBindVertexArray(g_vao); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); glBindBuffer(GL_ARRAY_BUFFER, g_texCoordsVBO); glVertexAttribPointer(g_texCoordLocation, 2, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_texCoordLocation); glUseProgram(g_programFur.program); glGenVertexArrays(1, &g_vaoFur); glBindVertexArray(g_vaoFur); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); glBindBuffer(GL_ARRAY_BUFFER, g_texCoordsVBO); glVertexAttribPointer(g_texCoordLocation, 2, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_texCoordLocation); // glusMatrix4x4LookAtf(g_viewMatrix, 0.0f, 0.75f, 3.0f, 0.0f, 0.75f, 0.0f, 0.0f, 1.0f, 0.0f); // glusVector3Normalizef(light.direction); // Transform light to camera space, as it is currently in world space. glusMatrix4x4MultiplyVector3f(light.direction, g_viewMatrix, light.direction); glUseProgram(g_program.program); // Set up light ... glUniform3fv(g_light.directionLocation, 1, light.direction); glUniform4fv(g_light.ambientColorLocation, 1, light.ambientColor); glUniform4fv(g_light.diffuseColorLocation, 1, light.diffuseColor); glUniform4fv(g_light.specularColorLocation, 1, light.specularColor); // ... and the texture. glActiveTexture(GL_TEXTURE0); glBindTexture(GL_TEXTURE_2D, g_textureFurColor); glUniform1i(g_textureLocation, 0); glUseProgram(g_programFur.program); glUniform3fv(g_lightDirectionFurLocation, 1, light.direction); // Fur color and position textures. glActiveTexture(GL_TEXTURE0); glBindTexture(GL_TEXTURE_2D, g_textureFurColor); glUniform1i(g_textureFurColorLocation, 0); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, g_textureFurStrength); glUniform1i(g_textureFurStrengthLocation, 1); // glClearColor(0.8f, 0.8f, 0.8f, 0.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); return GLUS_TRUE; }
GLUSboolean init(GLUSvoid) { GLUSshape wavefrontObj; GLUStextfile vertexSource; GLUStextfile fragmentSource; GLfloat viewMatrix[16]; GLfloat lightDirection[3]; lightDirection[0] = g_lightPosition[0]; lightDirection[1] = g_lightPosition[1]; lightDirection[2] = g_lightPosition[2]; glusVector3Normalizef(lightDirection); // glusFileLoadText("../Example34/shader/renderdepthmap.vert.glsl", &vertexSource); glusFileLoadText("../Example34/shader/renderdepthmap.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_programDepthPass, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // glusFileLoadText("../Example34/shader/subsurfacescattering.vert.glsl", &vertexSource); glusFileLoadText("../Example34/shader/subsurfacescattering.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_projectionMatrixDepthPassLocation = glGetUniformLocation(g_programDepthPass.program, "u_projectionMatrix"); g_modelViewMatrixDepthPassLocation = glGetUniformLocation(g_programDepthPass.program, "u_modelViewMatrix"); g_vertexDepthPassLocation = glGetAttribLocation(g_programDepthPass.program, "a_vertex"); // g_projectionMatrixLocation = glGetUniformLocation(g_program.program, "u_projectionMatrix"); g_viewMatrixLocation = glGetUniformLocation(g_program.program, "u_viewMatrix"); g_modelMatrixLocation = glGetUniformLocation(g_program.program, "u_modelMatrix"); g_normalMatrixLocation = glGetUniformLocation(g_program.program, "u_normalMatrix"); g_depthPassMatrixLocation = glGetUniformLocation(g_program.program, "u_depthPassMatrix"); g_diffuseColorLocation = glGetUniformLocation(g_program.program, "u_diffuseColor"); g_scatterColorLocation = glGetUniformLocation(g_program.program, "u_scatterColor"); g_lightDirectionLocation = glGetUniformLocation(g_program.program, "u_lightDirection"); g_depthPassTextureLocation = glGetUniformLocation(g_program.program, "u_depthPassTexture"); g_nearFarLocation = glGetUniformLocation(g_program.program, "u_nearFar"); g_wrapLocation = glGetUniformLocation(g_program.program, "u_wrap"); g_scatterWidthLocation = glGetUniformLocation(g_program.program, "u_scatterWidth"); g_scatterFalloffLocation = glGetUniformLocation(g_program.program, "u_scatterFalloff"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); // glGenTextures(1, &g_depthPassTexture); glBindTexture(GL_TEXTURE_2D, g_depthPassTexture); glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, g_depthPassTextureSize, g_depthPassTextureSize, 0, GL_DEPTH_COMPONENT, GL_FLOAT, 0); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glBindTexture(GL_TEXTURE_2D, 0); // glGenFramebuffers(1, &g_fbo); glBindFramebuffer(GL_FRAMEBUFFER, g_fbo); glDrawBuffer(GL_NONE); glReadBuffer(GL_NONE); glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, g_depthPassTexture, 0); if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) { printf("GL_FRAMEBUFFER_COMPLETE error 0x%x", glCheckFramebufferStatus(GL_FRAMEBUFFER)); return GLUS_FALSE; } glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); glBindFramebuffer(GL_FRAMEBUFFER, 0); // // Use a helper function to load an wavefront object file. glusShapeLoadWavefront("dragon.obj", &wavefrontObj); g_numberVertices = wavefrontObj.numberVertices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) wavefrontObj.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) wavefrontObj.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glusShapeDestroyf(&wavefrontObj); // glUseProgram(g_program.program); glusMatrix4x4LookAtf(viewMatrix, g_cameraPosition[0], g_cameraPosition[1], g_cameraPosition[2], 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f); glusMatrix4x4MultiplyVector3f(lightDirection, viewMatrix, lightDirection); glUniform3fv(g_lightDirectionLocation, 1, lightDirection); glUniform1i(g_depthPassTextureLocation, 0); // Dragon glGenVertexArrays(1, &g_vao); glBindVertexArray(g_vao); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); // glUseProgram(g_programDepthPass.program); // Dragon glGenVertexArrays(1, &g_vaoDepthPass); glBindVertexArray(g_vaoDepthPass); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexDepthPassLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexDepthPassLocation); // glClearColor(0.0f, 0.0f, 0.0f, 0.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); return GLUS_TRUE; }
GLUSboolean init(GLUSvoid) { // This is a white light. struct LightProperties light = { { 1.0f, 1.0f, 1.0f }, { 0.3f, 0.3f, 0.3f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } }; // Green color material with white specular color, half transparent. struct MaterialProperties material = { { 0.0f, 1.0f, 0.0f, 1.0f }, { 0.0f, 1.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f }, 20.0f, 0.5f }; static GLfloat biasMatrix[] = { 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 0.5f, 0.0f, 0.5f, 0.5f, 0.5f, 1.0f }; GLUStextfile vertexSource; GLUStextfile fragmentSource; GLUSshape wavefrontObj; glusFileLoadText("shader/phong_depth_peel.vert.glsl", &vertexSource); glusFileLoadText("shader/phong_depth_peel.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_biasMatrixLocation = glGetUniformLocation(g_program.program, "u_biasMatrix"); g_projectionMatrixLocation = glGetUniformLocation(g_program.program, "u_projectionMatrix"); g_modelViewMatrixLocation = glGetUniformLocation(g_program.program, "u_modelViewMatrix"); g_normalMatrixLocation = glGetUniformLocation(g_program.program, "u_normalMatrix"); g_light.directionLocation = glGetUniformLocation(g_program.program, "u_light.direction"); g_light.ambientColorLocation = glGetUniformLocation(g_program.program, "u_light.ambientColor"); g_light.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_light.diffuseColor"); g_light.specularColorLocation = glGetUniformLocation(g_program.program, "u_light.specularColor"); g_material.ambientColorLocation = glGetUniformLocation(g_program.program, "u_material.ambientColor"); g_material.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_material.diffuseColor"); g_material.specularColorLocation = glGetUniformLocation(g_program.program, "u_material.specularColor"); g_material.specularExponentLocation = glGetUniformLocation(g_program.program, "u_material.specularExponent"); g_material.alphaLocation = glGetUniformLocation(g_program.program, "u_material.alpha"); g_peelTextureLocation = glGetUniformLocation(g_program.program, "u_peelTexture"); g_layerLocation = glGetUniformLocation(g_program.program, "u_layer"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); // glusFileLoadText("shader/fullscreen_blend.vert.glsl", &vertexSource); glusFileLoadText("shader/fullscreen_blend.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_blendFullscreenProgram, (const GLchar**)&vertexSource.text, 0, 0, 0, (const GLchar**)&fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_framebufferTextureBlendFullscreenLocation = glGetUniformLocation(g_blendFullscreenProgram.program, "u_framebufferTexture"); g_layersBlendFullscreenLocation = glGetUniformLocation(g_blendFullscreenProgram.program, "u_layers"); // // Use a helper function to load an wavefront object file. glusShapeLoadWavefront("../../media/dragon.obj", &wavefrontObj); g_numberVertices = wavefrontObj.numberVertices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) wavefrontObj.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) wavefrontObj.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glusShapeDestroyf(&wavefrontObj); // // // Setting up the frame buffer. // glGenTextures(1, &g_colorTexture); glActiveTexture(GL_TEXTURE0); glBindTexture(GL_TEXTURE_2D_ARRAY, g_colorTexture); glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA, SCREEN_WIDTH, SCREEN_HEIGHT, LAYERS, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0); glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glBindTexture(GL_TEXTURE_2D_ARRAY, 0); // glGenTextures(2, g_depthTexture); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, g_depthTexture[0]); glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, SCREEN_WIDTH, SCREEN_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, 0); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE); // Peel depth test "function". See shader for more information. glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_GREATER); glBindTexture(GL_TEXTURE_2D, g_depthTexture[1]); glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, SCREEN_WIDTH, SCREEN_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, 0); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE); // Peel depth test "function". See shader for more information. glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_GREATER); glBindTexture(GL_TEXTURE_2D, 0); // glGenFramebuffers(1, &g_blendFullscreenFBO); glBindFramebuffer(GL_FRAMEBUFFER, g_blendFullscreenFBO); // Attach the color buffer ... glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, g_colorTexture, 0, 0); // ... and the depth buffer, glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, g_depthTexture[1], 0); if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) { printf("GL_FRAMEBUFFER_COMPLETE error 0x%x", glCheckFramebufferStatus(GL_FRAMEBUFFER)); return GLUS_FALSE; } glBindFramebuffer(GL_FRAMEBUFFER, 0); // glUseProgram(g_blendFullscreenProgram.program); glGenVertexArrays(1, &g_blendFullscreenVAO); glBindVertexArray(g_blendFullscreenVAO); glUniform1i(g_framebufferTextureBlendFullscreenLocation, 0); glUniform1i(g_layersBlendFullscreenLocation, LAYERS); glBindVertexArray(0); // glUseProgram(g_program.program); glGenVertexArrays(1, &g_vao); glBindVertexArray(g_vao); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); glBindVertexArray(0); // glusMatrix4x4LookAtf(g_viewMatrix, 0.0f, 0.0f, 3.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f); // glusVector3Normalizef(light.direction); // Transform light to camera space, as it is currently in world space. glusMatrix4x4MultiplyVector3f(light.direction, g_viewMatrix, light.direction); // Set up light ... glUniform3fv(g_light.directionLocation, 1, light.direction); glUniform4fv(g_light.ambientColorLocation, 1, light.ambientColor); glUniform4fv(g_light.diffuseColorLocation, 1, light.diffuseColor); glUniform4fv(g_light.specularColorLocation, 1, light.specularColor); // ... and material values. glUniform4fv(g_material.ambientColorLocation, 1, material.ambientColor); glUniform4fv(g_material.diffuseColorLocation, 1, material.diffuseColor); glUniform4fv(g_material.specularColorLocation, 1, material.specularColor); glUniform1f(g_material.specularExponentLocation, material.specularExponent); glUniform1f(g_material.alphaLocation, material.alpha); glUniform1i(g_peelTextureLocation, 1); glUniformMatrix4fv(g_biasMatrixLocation, 1, GL_FALSE, biasMatrix); // glClearColor(0.0f, 0.0f, 0.0f, 0.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); return GLUS_TRUE; }
GLUSboolean init(GLUSvoid) { // This is a white light. struct LightProperties light = { { 1.0f, 1.0f, 1.0f }, { 0.3f, 0.3f, 0.3f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } }; // Green color material with white specular color, half transparent. struct MaterialProperties material = { { 0.0f, 1.0f, 0.0f, 1.0f }, { 0.0f, 1.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f }, 20.0f, 0.5f }; // Buffer for cleaning the head index testure. static GLuint clearBuffer[SCREEN_WIDTH * SCREEN_HEIGHT]; GLUStextfile vertexSource; GLUStextfile fragmentSource; GLUSshape wavefrontObj; GLuint i; for (i = 0; i < SCREEN_WIDTH * SCREEN_HEIGHT; i++) { // 0xffffffff means end of list, so for the start tehre is no entry. clearBuffer[i] = 0xffffffff; } // glusFileLoadText("../Example36/shader/phong_linked_list.vert.glsl", &vertexSource); glusFileLoadText("../Example36/shader/phong_linked_list.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_projectionMatrixLocation = glGetUniformLocation(g_program.program, "u_projectionMatrix"); g_modelViewMatrixLocation = glGetUniformLocation(g_program.program, "u_modelViewMatrix"); g_normalMatrixLocation = glGetUniformLocation(g_program.program, "u_normalMatrix"); g_light.directionLocation = glGetUniformLocation(g_program.program, "u_light.direction"); g_light.ambientColorLocation = glGetUniformLocation(g_program.program, "u_light.ambientColor"); g_light.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_light.diffuseColor"); g_light.specularColorLocation = glGetUniformLocation(g_program.program, "u_light.specularColor"); g_material.ambientColorLocation = glGetUniformLocation(g_program.program, "u_material.ambientColor"); g_material.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_material.diffuseColor"); g_material.specularColorLocation = glGetUniformLocation(g_program.program, "u_material.specularColor"); g_material.specularExponentLocation = glGetUniformLocation(g_program.program, "u_material.specularExponent"); g_material.alphaLocation = glGetUniformLocation(g_program.program, "u_material.alpha"); g_maxNodesLocation = glGetUniformLocation(g_program.program, "u_maxNodes"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); // glusFileLoadText("../Example36/shader/fullscreen_blend.vert.glsl", &vertexSource); glusFileLoadText("../Example36/shader/fullscreen_blend.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_blendFullscreenProgram, (const GLchar**)&vertexSource.text, 0, 0, 0, (const GLchar**)&fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // Atomic counter to gather a free node slot concurrently. glGenBuffers(1, &g_freeNodeIndex); glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, BINDING_ATOMIC_FREE_INDEX, g_freeNodeIndex); glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(GLuint), 0, GL_DYNAMIC_DRAW); // Head index texture/image, which contains the glGenTextures(1, &g_headIndexTexture); glBindTexture(GL_TEXTURE_2D, g_headIndexTexture); glTexImage2D(GL_TEXTURE_2D, 0, GL_R32UI, SCREEN_WIDTH, SCREEN_HEIGHT, 0, GL_RED_INTEGER, GL_UNSIGNED_INT, 0); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glBindTexture(GL_TEXTURE_2D, 0); glBindImageTexture(BINDING_IMAGE_HEAD_INDEX, g_headIndexTexture, 0, GL_FALSE, 0, GL_READ_WRITE, GL_R32UI); // Buffer to clear/reset the head pointers. glGenBuffers(1, &g_clearBuffer); glBindBuffer(GL_PIXEL_UNPACK_BUFFER, g_clearBuffer); glBufferData(GL_PIXEL_UNPACK_BUFFER, SCREEN_WIDTH * SCREEN_HEIGHT * sizeof(GLuint), clearBuffer, GL_STATIC_COPY); // Buffer for the linked list. glGenBuffers(1, &g_linkedListBuffer); glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_LINKED_LIST, g_linkedListBuffer); // Size is RGBA, depth (5 * GLfloat), next pointer (1 * GLuint) and 2 paddings (2 * GLfloat). glBufferData(GL_SHADER_STORAGE_BUFFER, MAX_NODES * (sizeof(GLfloat) * 5 + sizeof(GLuint) * 1) + sizeof(GLfloat) * 2, 0, GL_DYNAMIC_DRAW); // // Use a helper function to load an wavefront object file. glusShapeLoadWavefront("dragon.obj", &wavefrontObj); g_numberVertices = wavefrontObj.numberVertices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) wavefrontObj.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) wavefrontObj.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glusShapeDestroyf(&wavefrontObj); // glUseProgram(g_blendFullscreenProgram.program); glGenVertexArrays(1, &g_blendFullscreenVAO); glBindVertexArray(g_blendFullscreenVAO); glBindVertexArray(0); // glUseProgram(g_program.program); glGenVertexArrays(1, &g_vao); glBindVertexArray(g_vao); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); glBindVertexArray(0); // glusMatrix4x4LookAtf(g_viewMatrix, 0.0f, 0.0f, 3.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f); // glusVector3Normalizef(light.direction); // Transform light to camera space, as it is currently in world space. glusMatrix4x4MultiplyVector3f(light.direction, g_viewMatrix, light.direction); // Set up light ... glUniform3fv(g_light.directionLocation, 1, light.direction); glUniform4fv(g_light.ambientColorLocation, 1, light.ambientColor); glUniform4fv(g_light.diffuseColorLocation, 1, light.diffuseColor); glUniform4fv(g_light.specularColorLocation, 1, light.specularColor); // ... and material values. glUniform4fv(g_material.ambientColorLocation, 1, material.ambientColor); glUniform4fv(g_material.diffuseColorLocation, 1, material.diffuseColor); glUniform4fv(g_material.specularColorLocation, 1, material.specularColor); glUniform1f(g_material.specularExponentLocation, material.specularExponent); glUniform1f(g_material.alphaLocation, material.alpha); glUniform1ui(g_maxNodesLocation, MAX_NODES); // glDisable(GL_DEPTH_TEST); return GLUS_TRUE; }
GLUSboolean init(GLUSvoid) { // This is a white light. struct LightProperties light = { { 1.0f, 1.0f, 1.0f }, { 0.3f, 0.3f, 0.3f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } }; // Blue color material with white specular color. struct MaterialProperties material = { { 0.0f, 1.0f, 0.0f, 1.0f }, { 0.0f, 1.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f }, 20.0f }; GLUStextfile vertexSource; GLUStextfile fragmentSource; GLUSshape wavefrontObj; glusFileLoadText("../Example16/shader/phong.vert.glsl", &vertexSource); glusFileLoadText("../Example16/shader/phong.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_projectionMatrixLocation = glGetUniformLocation(g_program.program, "u_projectionMatrix"); g_modelViewMatrixLocation = glGetUniformLocation(g_program.program, "u_modelViewMatrix"); g_normalMatrixLocation = glGetUniformLocation(g_program.program, "u_normalMatrix"); g_light.directionLocation = glGetUniformLocation(g_program.program, "u_light.direction"); g_light.ambientColorLocation = glGetUniformLocation(g_program.program, "u_light.ambientColor"); g_light.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_light.diffuseColor"); g_light.specularColorLocation = glGetUniformLocation(g_program.program, "u_light.specularColor"); g_material.ambientColorLocation = glGetUniformLocation(g_program.program, "u_material.ambientColor"); g_material.diffuseColorLocation = glGetUniformLocation(g_program.program, "u_material.diffuseColor"); g_material.specularColorLocation = glGetUniformLocation(g_program.program, "u_material.specularColor"); g_material.specularExponentLocation = glGetUniformLocation(g_program.program, "u_material.specularExponent"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); // // Use a helper function to load an wavefront object file. glusShapeLoadWavefront("monkey.obj", &wavefrontObj); g_numberVertices = wavefrontObj.numberVertices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) wavefrontObj.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, wavefrontObj.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) wavefrontObj.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glusShapeDestroyf(&wavefrontObj); // glUseProgram(g_program.program); glGenVertexArrays(1, &g_vao); glBindVertexArray(g_vao); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); // glusMatrix4x4LookAtf(g_viewMatrix, 0.0f, 0.0f, 5.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f); // glusVector3Normalizef(light.direction); // Transform light to camera space, as it is currently in world space. glusMatrix4x4MultiplyVector3f(light.direction, g_viewMatrix, light.direction); // Set up light ... glUniform3fv(g_light.directionLocation, 1, light.direction); glUniform4fv(g_light.ambientColorLocation, 1, light.ambientColor); glUniform4fv(g_light.diffuseColorLocation, 1, light.diffuseColor); glUniform4fv(g_light.specularColorLocation, 1, light.specularColor); // ... and material values. glUniform4fv(g_material.ambientColorLocation, 1, material.ambientColor); glUniform4fv(g_material.diffuseColorLocation, 1, material.diffuseColor); glUniform4fv(g_material.specularColorLocation, 1, material.specularColor); glUniform1f(g_material.specularExponentLocation, material.specularExponent); // glClearColor(0.0f, 0.0f, 0.0f, 0.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); return GLUS_TRUE; }