GLUSboolean init(GLUSvoid) { GLUSshape plane; GLUStextfile vertexSource; GLUStextfile fragmentSource; GLUStgaimage image; GLfloat normalMatrix[9]; glusFileLoadText("../Example07/shader/normmap.vert.glsl", &vertexSource); glusFileLoadText("../Example07/shader/normmap.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_lightDirectionLocation = glGetUniformLocation(g_program.program, "u_lightDirection"); // One texture for the color and one for the normals. g_textureLocation = glGetUniformLocation(g_program.program, "u_texture"); g_normalMapLocation = glGetUniformLocation(g_program.program, "u_normalMap"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); // The tangent, bitangent and normal do define the tangent space. They are defined in object space, the inverse brings coordinates back to this tangent space. g_tangentLocation = glGetAttribLocation(g_program.program, "a_tangent"); g_bitangentLocation = glGetAttribLocation(g_program.program, "a_bitangent"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); g_texCoordLocation = glGetAttribLocation(g_program.program, "a_texCoord"); // glusImageLoadTga("rock_color.tga", &image); glGenTextures(1, &g_texture); glBindTexture(GL_TEXTURE_2D, g_texture); glTexImage2D(GL_TEXTURE_2D, 0, image.format, image.width, image.height, 0, image.format, GL_UNSIGNED_BYTE, image.data); glusImageDestroyTga(&image); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_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); glusImageLoadTga("rock_normal.tga", &image); glGenTextures(1, &g_normalMap); glBindTexture(GL_TEXTURE_2D, g_normalMap); glTexImage2D(GL_TEXTURE_2D, 0, image.format, image.width, image.height, 0, image.format, GL_UNSIGNED_BYTE, image.data); glusImageDestroyTga(&image); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_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); // glusShapeCreatePlanef(&plane, 1.5f); g_numberIndicesPlane = plane.numberIndices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) plane.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_tangentsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_tangentsVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) plane.tangents, GL_STATIC_DRAW); glGenBuffers(1, &g_bitangentsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_bitangentsVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) plane.bitangents, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) plane.normals, GL_STATIC_DRAW); glGenBuffers(1, &g_texCoordsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_texCoordsVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 2 * sizeof(GLfloat), (GLfloat*) plane.texCoords, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glGenBuffers(1, &g_indicesVBO); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesVBO); glBufferData(GL_ELEMENT_ARRAY_BUFFER, g_numberIndicesPlane * sizeof(GLuint), (GLuint*) plane.indices, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glusShapeDestroyf(&plane); // 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_tangentsVBO); glVertexAttribPointer(g_tangentLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_tangentLocation); glBindBuffer(GL_ARRAY_BUFFER, g_bitangentsVBO); glVertexAttribPointer(g_bitangentLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_bitangentLocation); 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); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesVBO); // glusMatrix4x4LookAtf(g_viewMatrix, 0.0f, 0.0f, 5.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f); glUniformMatrix4fv(g_modelViewMatrixLocation, 1, GL_FALSE, g_viewMatrix); glusMatrix4x4ExtractMatrix3x3f(normalMatrix, g_viewMatrix); glUniformMatrix3fv(g_normalMatrixLocation, 1, GL_FALSE, normalMatrix); // // Activate and bind first ... glUniform1i(g_textureLocation, 0); glActiveTexture(GL_TEXTURE0); glBindTexture(GL_TEXTURE_2D, g_texture); // .. and second texture. glUniform1i(g_normalMapLocation, 1); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, g_normalMap); glClearColor(0.0f, 0.0f, 0.0f, 0.0f); return GLUS_TRUE; }
GLUSboolean init(GLUSvoid) { GLUSshape background; GLUSshape torus; GLUStextfile vertexSource; GLUStextfile fragmentSource; GLfloat viewMatrix[16]; GLfloat lightDirection[3]; lightDirection[0] = g_lightDirection[0]; lightDirection[1] = g_lightDirection[1]; lightDirection[2] = g_lightDirection[2]; glusVector3Normalizef(lightDirection); // glusFileLoadText("../Example27/shader/shadow.vert.glsl", &vertexSource); glusFileLoadText("../Example27/shader/shadow.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_programShadow, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // glusFileLoadText("../Example27/shader/color.vert.glsl", &vertexSource); glusFileLoadText("../Example27/shader/color.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_projectionMatrixShadowLocation = glGetUniformLocation(g_programShadow.program, "u_projectionMatrix"); g_viewMatrixShadowLocation = glGetUniformLocation(g_programShadow.program, "u_viewMatrix"); g_shadowProjectionMatrixShadowLocation = glGetUniformLocation(g_programShadow.program, "u_shadowProjectionMatrix"); g_modelMatrixShadowLocation = glGetUniformLocation(g_programShadow.program, "u_modelMatrix"); g_vertexShadowLocation = glGetAttribLocation(g_programShadow.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_colorLocation = glGetUniformLocation(g_program.program, "u_shapeColor"); g_lightDirectionLocation = glGetUniformLocation(g_program.program, "u_lightDirection"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); // glusShapeCreateTorusf(&torus, 0.5f, 1.0f, 32, 32); g_numberIndicesTorus = torus.numberIndices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, torus.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) torus.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, torus.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) torus.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glGenBuffers(1, &g_indicesVBO); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesVBO); glBufferData(GL_ELEMENT_ARRAY_BUFFER, torus.numberIndices * sizeof(GLuint), (GLuint*) torus.indices, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glusShapeDestroyf(&torus); // glusShapeCreatePlanef(&background, 10.0f); g_numberIndicesBackground = background.numberIndices; glGenBuffers(1, &g_verticesBackgroundVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesBackgroundVBO); glBufferData(GL_ARRAY_BUFFER, background.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) background.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsBackgroundVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsBackgroundVBO); glBufferData(GL_ARRAY_BUFFER, background.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) background.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glGenBuffers(1, &g_indicesBackgroundVBO); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesBackgroundVBO); glBufferData(GL_ELEMENT_ARRAY_BUFFER, background.numberIndices * sizeof(GLuint), (GLuint*) background.indices, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glusShapeDestroyf(&background); // 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); // Torus 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_ELEMENT_ARRAY_BUFFER, g_indicesVBO); // Plane glGenVertexArrays(1, &g_vaoBackground); glBindVertexArray(g_vaoBackground); glBindBuffer(GL_ARRAY_BUFFER, g_verticesBackgroundVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsBackgroundVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesBackgroundVBO); // glUseProgram(g_programShadow.program); // Torus glGenVertexArrays(1, &g_vaoShadow); glBindVertexArray(g_vaoShadow); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexShadowLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexShadowLocation); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesVBO); // 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) { GLUSshape background; GLUSshape torus; GLUStextfile vertexSource; GLUStextfile fragmentSource; GLfloat viewMatrix[16]; GLfloat lightDirection[3]; GLenum none[] = {GL_NONE}; lightDirection[0] = g_lightPosition[0]; lightDirection[1] = g_lightPosition[1]; lightDirection[2] = g_lightPosition[2]; glusVector3Normalizef(lightDirection); // glusFileLoadText("../Example12_ES/shader/rendershadow.vert.glsl", &vertexSource); glusFileLoadText("../Example12_ES/shader/rendershadow.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_programShadow, (const GLUSchar**) &vertexSource.text, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // glusFileLoadText("../Example12_ES/shader/useshadow.vert.glsl", &vertexSource); glusFileLoadText("../Example12_ES/shader/useshadow.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_projectionMatrixShadowLocation = glGetUniformLocation(g_programShadow.program, "u_projectionMatrix"); g_modelViewMatrixShadowLocation = glGetUniformLocation(g_programShadow.program, "u_modelViewMatrix"); g_vertexShadowLocation = glGetAttribLocation(g_programShadow.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_shadowMatrixLocation = glGetUniformLocation(g_program.program, "u_shadowMatrix"); g_shadowTextureLocation = glGetUniformLocation(g_program.program, "u_shadowTexture"); g_colorLocation = glGetUniformLocation(g_program.program, "u_shapeColor"); g_lightDirectionLocation = glGetUniformLocation(g_program.program, "u_lightDirection"); g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); // glGenTextures(1, &g_shadowTexture); glBindTexture(GL_TEXTURE_2D, g_shadowTexture); glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, g_shadowTextureSize, g_shadowTextureSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, 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); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_LESS); glBindTexture(GL_TEXTURE_2D, 0); // glGenFramebuffers(1, &g_fbo); glBindFramebuffer(GL_FRAMEBUFFER, g_fbo); glDrawBuffers(1, none); glReadBuffer(GL_NONE); glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, g_shadowTexture, 0); if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) { printf("GL_FRAMEBUFFER_COMPLETE error 0x%x", glCheckFramebufferStatus(GL_FRAMEBUFFER)); return GLUS_FALSE; } glClearDepthf(1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); glBindFramebuffer(GL_FRAMEBUFFER, 0); // glusShapeCreateTorusf(&torus, 0.5f, 1.0f, 32, 32); g_numberIndicesSphere = torus.numberIndices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, torus.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) torus.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, torus.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) torus.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glGenBuffers(1, &g_indicesVBO); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesVBO); glBufferData(GL_ELEMENT_ARRAY_BUFFER, torus.numberIndices * sizeof(GLuint), (GLuint*) torus.indices, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glusShapeDestroyf(&torus); // glusShapeCreatePlanef(&background, 10.0f); g_numberIndicesBackground = background.numberIndices; glGenBuffers(1, &g_verticesBackgroundVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesBackgroundVBO); glBufferData(GL_ARRAY_BUFFER, background.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) background.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsBackgroundVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsBackgroundVBO); glBufferData(GL_ARRAY_BUFFER, background.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) background.normals, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glGenBuffers(1, &g_indicesBackgroundVBO); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesBackgroundVBO); glBufferData(GL_ELEMENT_ARRAY_BUFFER, background.numberIndices * sizeof(GLuint), (GLuint*) background.indices, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glusShapeDestroyf(&background); // 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_shadowTextureLocation, 0); // Torus 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_ELEMENT_ARRAY_BUFFER, g_indicesVBO); // Plane glGenVertexArrays(1, &g_vaoBackground); glBindVertexArray(g_vaoBackground); glBindBuffer(GL_ARRAY_BUFFER, g_verticesBackgroundVBO); glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexLocation); glBindBuffer(GL_ARRAY_BUFFER, g_normalsBackgroundVBO); glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_normalLocation); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesBackgroundVBO); // glUseProgram(g_programShadow.program); // Torus glGenVertexArrays(1, &g_vaoShadow); glBindVertexArray(g_vaoShadow); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glVertexAttribPointer(g_vertexShadowLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexShadowLocation); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesVBO); // Plane glGenVertexArrays(1, &g_vaoShadowBackground); glBindVertexArray(g_vaoShadowBackground); glBindBuffer(GL_ARRAY_BUFFER, g_verticesBackgroundVBO); glVertexAttribPointer(g_vertexShadowLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexShadowLocation); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesBackgroundVBO); // glClearColor(0.0f, 0.0f, 0.0f, 0.0f); glClearDepthf(1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); // Needed when rendering the shadow map. This will avoid artifacts. glPolygonOffset(1.0f, 0.0f); return GLUS_TRUE; }
GLUSboolean init(GLUSvoid) { GLUStextfile vertexSource; GLUStextfile fragmentSource; GLUStgaimage image; GLUSshape plane; // glusMatrix4x4LookAtf(g_viewMatrix, g_camera.eye[0], g_camera.eye[1], g_camera.eye[2], g_camera.center[0], g_camera.center[1], g_camera.center[2], g_camera.up[0], g_camera.up[1], g_camera.up[2]); // if (!initWavefront(g_viewMatrix, &g_light)) { return GLUS_FALSE; } // glusFileLoadText("../Example19_ES/shader/basic_proj.vert.glsl", &vertexSource); glusFileLoadText("../Example19_ES/shader/texture_multi_proj.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_program, (const GLUSchar**) &vertexSource.text, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // // Retrieve the uniform locations in the program. g_viewProjectionMatrixLocation = glGetUniformLocation(g_program.program, "u_viewProjectionMatrix"); g_viewProjectionBiasTextureMatrixLocation = glGetUniformLocation(g_program.program, "u_viewProjectionBiasTextureMatrix"); g_modelMatrixLocation = glGetUniformLocation(g_program.program, "u_modelMatrix"); g_normalMatrixLocation = glGetUniformLocation(g_program.program, "u_normalMatrix"); g_lightDirectionLocation = glGetUniformLocation(g_program.program, "u_lightDirection"); g_repeatLocation = glGetUniformLocation(g_program.program, "u_repeat"); g_textureLocation = glGetUniformLocation(g_program.program, "u_texture"); g_mirrorTextureLocation = glGetUniformLocation(g_program.program, "u_mirrorTexture"); // Retrieve the attribute locations in the program. g_vertexLocation = glGetAttribLocation(g_program.program, "a_vertex"); g_normalLocation = glGetAttribLocation(g_program.program, "a_normal"); g_texCoordLocation = glGetAttribLocation(g_program.program, "a_texCoord"); // // Texture set up. glusImageLoadTga("ice.tga", &image); glGenTextures(1, &g_texture); glBindTexture(GL_TEXTURE_2D, g_texture); 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); // // Setting up the offscreen frame buffer. // glGenTextures(1, &g_mirrorTexture); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, g_mirrorTexture); glTexImage2D(GL_TEXTURE_2D, 0, GLUS_RGB, TEXTURE_WIDTH, TEXTURE_HEIGHT, 0, GLUS_RGB, GL_UNSIGNED_BYTE, 0); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_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); glBindTexture(GL_TEXTURE_2D, 0); // glGenRenderbuffers(1, &g_depthMirrorTexture); glBindRenderbuffer(GL_RENDERBUFFER, g_depthMirrorTexture); glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, TEXTURE_WIDTH, TEXTURE_HEIGHT); glBindRenderbuffer(GL_RENDERBUFFER, 0); // glGenFramebuffers(1, &g_fboMirrorTexture); glBindFramebuffer(GL_FRAMEBUFFER, g_fboMirrorTexture); // Attach the color buffer ... glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, g_mirrorTexture, 0); // ... and the depth buffer, glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, g_depthMirrorTexture); if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) { printf("GL_FRAMEBUFFER_COMPLETE error 0x%x", glCheckFramebufferStatus(GL_FRAMEBUFFER)); return GLUS_FALSE; } glBindFramebuffer(GL_FRAMEBUFFER, 0); // // // glusShapeCreatePlanef(&plane, 3.0f); g_numberIndicesSphere = plane.numberIndices; glGenBuffers(1, &g_verticesVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) plane.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_normalsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_normalsVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 3 * sizeof(GLfloat), (GLfloat*) plane.normals, GL_STATIC_DRAW); glGenBuffers(1, &g_texCoordsVBO); glBindBuffer(GL_ARRAY_BUFFER, g_texCoordsVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 2 * sizeof(GLfloat), (GLfloat*) plane.texCoords, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glGenBuffers(1, &g_indicesVBO); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesVBO); glBufferData(GL_ELEMENT_ARRAY_BUFFER, plane.numberIndices * sizeof(GLuint), (GLuint*) plane.indices, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glusShapeDestroyf(&plane); // 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); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesVBO); // glActiveTexture(GL_TEXTURE0); glBindTexture(GL_TEXTURE_2D, g_texture); glUniform1i(g_textureLocation, 0); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, g_mirrorTexture); glUniform1i(g_mirrorTextureLocation, 1); // How many times the surface texture is repeated. glUniform1f(g_repeatLocation, 6.0f); // glClearColor(0.0f, 0.0f, 0.0f, 0.0f); glClearDepthf(1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); return GLUS_TRUE; }
GLUSuint initWaterTexture(GLUSfloat waterPlaneLength) { GLfloat projectionMatrixWaterTexture[16]; GLfloat modelViewMatrixWaterTexture[16]; GLUSshape plane; GLUStextfile vertexSource; GLUStextfile fragmentSource; glusFileLoadText("../Example15/shader/WaterTexture.vert.glsl", &vertexSource); glusFileLoadText("../Example15/shader/WaterTexture.frag.glsl", &fragmentSource); glusProgramBuildFromSource(&g_programWaterTexture, (const GLUSchar**) &vertexSource.text, 0, 0, 0, (const GLUSchar**) &fragmentSource.text); glusFileDestroyText(&vertexSource); glusFileDestroyText(&fragmentSource); // g_projectionMatrixWaterTextureLocation = glGetUniformLocation(g_programWaterTexture.program, "u_projectionMatrix"); g_modelViewMatrixWaterTextureLocation = glGetUniformLocation(g_programWaterTexture.program, "u_modelViewMatrix"); g_waterPlaneLengthWaterTextureLocation = glGetUniformLocation(g_programWaterTexture.program, "u_waterPlaneLength"); g_passedTimeWaterTextureLocation = glGetUniformLocation(g_programWaterTexture.program, "u_passedTime"); g_waveParametersWaterTextureLocation = glGetUniformLocation(g_programWaterTexture.program, "u_waveParameters"); g_waveDirectionsWaterTextureLocation = glGetUniformLocation(g_programWaterTexture.program, "u_waveDirections"); g_vertexWaterTextureLocation = glGetAttribLocation(g_programWaterTexture.program, "a_vertex"); g_texCoordWaterTextureLocation = glGetAttribLocation(g_programWaterTexture.program, "a_texCoord"); // glGenTextures(1, &g_mirrorTexture); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, g_mirrorTexture); glTexImage2D(GL_TEXTURE_2D, 0, GLUS_RGB, TEXTURE_SIZE, TEXTURE_SIZE, 0, GLUS_RGB, GL_UNSIGNED_BYTE, 0); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_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); // glGenRenderbuffers(1, &g_depthMirrorTexture); glBindRenderbuffer(GL_RENDERBUFFER, g_depthMirrorTexture); glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, TEXTURE_SIZE, TEXTURE_SIZE); glBindRenderbuffer(GL_RENDERBUFFER, 0); // glGenFramebuffers(1, &g_fboWaterTexture); glBindFramebuffer(GL_FRAMEBUFFER, g_fboWaterTexture); // Attach the color buffer ... glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, g_mirrorTexture, 0); // ... and the depth buffer, glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, g_depthMirrorTexture); if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) { printf("GL_FRAMEBUFFER_COMPLETE error 0x%x", glCheckFramebufferStatus(GL_FRAMEBUFFER)); return GLUS_FALSE; } glBindFramebuffer(GL_FRAMEBUFFER, 0); // glBindVertexArray(0); // glusShapeCreatePlanef(&plane, TEXTURE_SIZE / 2.0f); g_numberIndicesWaterTexture = plane.numberIndices; glGenBuffers(1, &g_verticesWaterTextureVBO); glBindBuffer(GL_ARRAY_BUFFER, g_verticesWaterTextureVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 4 * sizeof(GLfloat), (GLfloat*) plane.vertices, GL_STATIC_DRAW); glGenBuffers(1, &g_texCoordsWaterTextureVBO); glBindBuffer(GL_ARRAY_BUFFER, g_texCoordsWaterTextureVBO); glBufferData(GL_ARRAY_BUFFER, plane.numberVertices * 2 * sizeof(GLfloat), (GLfloat*) plane.texCoords, GL_STATIC_DRAW); glBindBuffer(GL_ARRAY_BUFFER, 0); glGenBuffers(1, &g_indicesWaterTextureVBO); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesWaterTextureVBO); glBufferData(GL_ELEMENT_ARRAY_BUFFER, plane.numberIndices * sizeof(GLuint), (GLuint*) plane.indices, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glusShapeDestroyf(&plane); // glUseProgram(g_programWaterTexture.program); glusMatrix4x4LookAtf(modelViewMatrixWaterTexture, 0.0f, 0.0f, 5.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f); glUniformMatrix4fv(g_modelViewMatrixWaterTextureLocation, 1, GL_FALSE, modelViewMatrixWaterTexture); glusMatrix4x4Orthof(projectionMatrixWaterTexture, -(GLfloat) TEXTURE_SIZE / 2, (GLfloat) TEXTURE_SIZE / 2, -(GLfloat) TEXTURE_SIZE / 2, (GLfloat) TEXTURE_SIZE / 2, 1.0f, 100.0f); glUniformMatrix4fv(g_projectionMatrixWaterTextureLocation, 1, GL_FALSE, projectionMatrixWaterTexture); glUniform1f(g_waterPlaneLengthWaterTextureLocation, waterPlaneLength); // glGenVertexArrays(1, &g_vaoWaterTexture); glBindVertexArray(g_vaoWaterTexture); glBindBuffer(GL_ARRAY_BUFFER, g_verticesWaterTextureVBO); glVertexAttribPointer(g_vertexWaterTextureLocation, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_vertexWaterTextureLocation); glBindBuffer(GL_ARRAY_BUFFER, g_texCoordsWaterTextureVBO); glVertexAttribPointer(g_texCoordWaterTextureLocation, 2, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(g_texCoordWaterTextureLocation); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indicesWaterTextureVBO); // glClearColor(0.0f, 0.0f, 0.0f, 0.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); return g_mirrorTexture; }