float gamma_r = 1.0f, gamma_g = 1.0f, gamma_b = 1.0f;
float gain_r = 1.0f, gain_g = 1.0f, gain_b = 1.0f;
-GLhandleARB read_shader(const char* filename, GLenum type)
-{
- std::string shader_src = read_file(filename);
-
- GLhandleARB obj = glCreateShaderObjectARB(type);
- const GLchar* source[] = { shader_src.data() };
- const GLint length[] = { shader_src.size() };
- glShaderSource(obj, 1, source, length);
- glCompileShader(obj);
-
- GLchar info_log[4096];
- GLsizei log_length = sizeof(info_log) - 1;
- glGetShaderInfoLog(obj, log_length, &log_length, info_log);
- info_log[log_length] = 0;
- printf("shader compile log: %s\n", info_log);
-
- GLint status;
- glGetShaderiv(obj, GL_COMPILE_STATUS, &status);
- if (status == GL_FALSE) {
- exit(1);
- }
-
- return obj;
-}
-
void draw_picture_quad(GLint prog, int frame)
{
glUseProgramObjectARB(prog);
check_error();
load_texture("blg_wheels_woman_1.jpg");
+
+ EffectChain chain(WIDTH, HEIGHT);
+
+ ImageFormat inout_format;
+ inout_format.pixel_format = FORMAT_RGB;
+ inout_format.color_space = COLORSPACE_sRGB;
+ inout_format.gamma_curve = GAMMA_sRGB;
+
+ chain.add_input(inout_format);
+ Effect *lift_gamma_gain_effect = chain.add_effect(LIFT_GAMMA_GAIN);
+ chain.add_output(inout_format);
+ chain.finalize();
+
//glGenerateMipmap(GL_TEXTURE_2D);
//glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 4);
//check_error();
update_hsv();
int prog = glCreateProgram();
- GLhandleARB vs_obj = read_shader("vs.glsl", GL_VERTEX_SHADER);
- GLhandleARB fs_obj = read_shader("fs.glsl", GL_FRAGMENT_SHADER);
+ GLhandleARB vs_obj = compile_shader(read_file("vs.glsl"), GL_VERTEX_SHADER);
+ GLhandleARB fs_obj = compile_shader(read_file("fs.glsl"), GL_FRAGMENT_SHADER);
glAttachObjectARB(prog, vs_obj);
check_error();
glAttachObjectARB(prog, fs_obj);
++frame;
+
draw_picture_quad(prog, frame);
glReadPixels(0, 0, WIDTH, HEIGHT, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, BUFFER_OFFSET(0));