Fix indentation
This commit is contained in:
parent
4b03ea2a9c
commit
a240df3979
1 changed files with 82 additions and 82 deletions
164
glslview.c
164
glslview.c
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@ -23,117 +23,117 @@ static GLint res_loc;
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static char * readfile(const char *filename) {
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FILE *f = fopen(filename, "r");
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if (!f)
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return NULL;
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FILE *f = fopen(filename, "r");
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if (!f)
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return NULL;
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size_t size = 1024;
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char *buffer = malloc(size+1);
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size_t count = 0, r;
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size_t size = 1024;
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char *buffer = malloc(size+1);
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size_t count = 0, r;
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do {
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if (count == size) {
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size *= 2;
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buffer = realloc(buffer, size+1);
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}
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do {
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if (count == size) {
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size *= 2;
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buffer = realloc(buffer, size+1);
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}
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r = fread(buffer+count, 1, size-count, f);
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count += r;
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} while (r);
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r = fread(buffer+count, 1, size-count, f);
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count += r;
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} while (r);
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fclose(f);
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fclose(f);
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buffer[count] = 0;
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buffer[count] = 0;
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return buffer;
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return buffer;
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}
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static void printShaderInfoLog(GLuint obj) {
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GLint length = 0;
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GLint length = 0;
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glGetShaderiv(obj, GL_INFO_LOG_LENGTH, &length);
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glGetShaderiv(obj, GL_INFO_LOG_LENGTH, &length);
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if(length > 0) {
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char log[length];
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if(length > 0) {
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char log[length];
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glGetShaderInfoLog(obj, sizeof(log), NULL, log);
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fprintf(stderr, "%s\n", log);
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}
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glGetShaderInfoLog(obj, sizeof(log), NULL, log);
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fprintf(stderr, "%s\n", log);
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}
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}
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static void printProgramInfoLog(GLuint obj) {
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GLint length = 0;
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GLint length = 0;
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glGetProgramiv(obj, GL_INFO_LOG_LENGTH, &length);
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glGetProgramiv(obj, GL_INFO_LOG_LENGTH, &length);
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if(length > 0) {
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char log[length];
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if(length > 0) {
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char log[length];
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glGetProgramInfoLog(obj, sizeof(log), NULL, log);
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fprintf(stderr, "%s\n", log);
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}
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glGetProgramInfoLog(obj, sizeof(log), NULL, log);
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fprintf(stderr, "%s\n", log);
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}
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}
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static void init(char *filename) {
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glewInit();
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glewInit();
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glDisable(GL_DEPTH_TEST);
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char *shader = readfile(filename);
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if (!shader) {
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fprintf(stderr, "Error: unable to read '%s'\n", filename);
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exit(1);
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}
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char *shader = readfile(filename);
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if (!shader) {
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fprintf(stderr, "Error: unable to read '%s'\n", filename);
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exit(1);
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}
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GLuint frag = glCreateShader(GL_FRAGMENT_SHADER);
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glShaderSource(frag, 1, (const GLchar **)&shader, NULL);
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glCompileShader(frag);
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printShaderInfoLog(frag);
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GLuint frag = glCreateShader(GL_FRAGMENT_SHADER);
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glShaderSource(frag, 1, (const GLchar **)&shader, NULL);
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glCompileShader(frag);
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printShaderInfoLog(frag);
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GLuint program = glCreateProgram();
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glAttachShader(program, frag);
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GLuint program = glCreateProgram();
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glAttachShader(program, frag);
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glLinkProgram(program);
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printProgramInfoLog(program);
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glLinkProgram(program);
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printProgramInfoLog(program);
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glBindFragDataLocation(program, 0, "fragColor");
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time_loc = glGetUniformLocation(program, "time");
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res_loc = glGetUniformLocation(program, "res");
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glBindFragDataLocation(program, 0, "fragColor");
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time_loc = glGetUniformLocation(program, "time");
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res_loc = glGetUniformLocation(program, "res");
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glUseProgram(program);
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glUseProgram(program);
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}
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#ifdef GLSLWRITE
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static void savePNG(int width, int height, const char *output_dir) {
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uint8_t pixels[width*height*4];
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glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, pixels);
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uint8_t pixels[width*height*4];
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glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, pixels);
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char filename[strlen(output_dir) + 20];
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snprintf(filename, sizeof(filename), "%s/%010u.png", output_dir, frame_time);
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char filename[strlen(output_dir) + 20];
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snprintf(filename, sizeof(filename), "%s/%010u.png", output_dir, frame_time);
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FILE *f = fopen(filename, "wb");
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FILE *f = fopen(filename, "wb");
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if (!f) {
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fprintf(stderr, "unable to open PNG file\n");
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exit(1);
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}
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fprintf(stderr, "unable to open PNG file\n");
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exit(1);
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}
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png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if (!png_ptr) {
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fprintf(stderr, "unable to open PNG file\n");
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exit(1);
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}
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fprintf(stderr, "unable to open PNG file\n");
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exit(1);
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}
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png_set_swap_alpha(png_ptr);
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png_set_swap_alpha(png_ptr);
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png_infop info_ptr = png_create_info_struct(png_ptr);
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if (!info_ptr) {
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fprintf(stderr, "unable to create PNG info struct\n");
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exit(1);
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exit(1);
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}
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if (setjmp(png_jmpbuf(png_ptr))) {
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fprintf(stderr, "unable to write PNG file\n");
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exit(1);
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exit(1);
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}
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png_init_io(png_ptr, f);
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@ -157,11 +157,11 @@ static void render(int width, int height) {
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glViewport(0, 0, (GLsizei)width, (GLsizei)height);
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#ifdef GLSLWRITE
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glUniform1f(time_loc, frame_time);
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glUniform1f(time_loc, frame_time);
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#else
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glUniform1f(time_loc, SDL_GetTicks());
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glUniform1f(time_loc, SDL_GetTicks());
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#endif
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glUniform2f(res_loc, width, height);
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glUniform2f(res_loc, width, height);
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glBegin(GL_QUADS);
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glVertex2f(-1, -1);
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@ -171,7 +171,7 @@ static void render(int width, int height) {
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glEnd();
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#ifdef GLSLWRITE
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frame_time += 20;
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frame_time += 20;
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#endif
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}
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@ -180,23 +180,23 @@ int main(int argc, char *argv[]) {
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bool running = true;
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#ifdef GLSLWRITE
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if (argc != 3) {
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fprintf(stderr, "Usage: glslwrite <shader> <output directory>\n");
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exit(1);
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}
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if (argc != 3) {
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fprintf(stderr, "Usage: glslwrite <shader> <output directory>\n");
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exit(1);
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}
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#else
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if (argc != 2) {
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fprintf(stderr, "Usage: glslview <shader> <output directory>\n");
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exit(1);
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}
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if (argc != 2) {
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fprintf(stderr, "Usage: glslview <shader> <output directory>\n");
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exit(1);
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}
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#endif
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SDL_Init(SDL_INIT_VIDEO);
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SDL_Window *window = SDL_CreateWindow("glslwrite", 0, 0, 800, 800, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
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SDL_GL_CreateContext(window);
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SDL_GL_CreateContext(window);
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init(argv[1]);
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init(argv[1]);
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while (running) {
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SDL_Event e;
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@ -204,18 +204,18 @@ int main(int argc, char *argv[]) {
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while( SDL_PollEvent(&e)) {
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if(e.type == SDL_QUIT) {
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running = false;
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break;
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break;
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}
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}
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int width, height;
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SDL_GetWindowSize(window, &width, &height);
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int width, height;
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SDL_GetWindowSize(window, &width, &height);
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render(width, height);
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SDL_GL_SwapWindow(window);
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SDL_GL_SwapWindow(window);
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#ifdef GLSLWRITE
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savePNG(width, height, argv[2]);
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savePNG(width, height, argv[2]);
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#endif
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}
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