internal size

Makefile.dev

@@ -1,6 +1,6 @@
 TARGET ?= forge
 INSTALL_DIR ?= $(HOME)/.local/bin
-TEST_ARGS ?= --hot-reload --frag=./shaders --frag-config=./config/shaders.cfg --demo
+TEST_ARGS ?= --hot-reload --frag=./shaders --frag-config=./config/shaders.cfg --demo -is=480
 SHELL := /bin/bash
 
 .PHONY: build

README.md

@@ -115,6 +115,8 @@ make -f Makefile.dev release-arch
   - [x] demo mode
   - [x] random seed injected into shaders
   - [ ] internal texture size for speed
+  - [ ] pass state as uniform
+  - [ ] debug shader (and in monitor)
   - [ ] Clean code and fix things
 - [ ] Midi
   - [ ] Read Midi events

src/args.c

@@ -1,3 +1,4 @@
+#include <limits.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -30,6 +31,7 @@ static void print_help(int status_code) {
        "  -s, --screen          output screen number (default: primary)\n"
        "  -f, --frag            fragment shaders directory (default: TODO)\n"
        "  -fc, --frag-config    fragment shaders config file (default: TODO)\n"
+       "  -is, --internal-size  internal texture height (default: 720)\n"
        "  -t, --tempo           base tempo (default: 60)\n"
        "  --demo                demonstration mode\n");
   exit(status_code);
@@ -52,26 +54,15 @@ static char *split_arg_value(char *arg) {
   return strtok(NULL, "=");
 }
 
-static unsigned char parse_uchar(char *arg, char *value) {
+static unsigned int parse_uint(char *arg, char *value) {
   if (!string_is_number(value)) {
     invalid_value(arg, value);
   }
   unsigned long long tmp_value = (unsigned long long)atoll(value);
-  if (tmp_value >= 256) {
+  if (tmp_value >= UINT_MAX) {
     invalid_value(arg, value);
   }
-  return (unsigned char)tmp_value;
-}
-
-static unsigned short parse_ushort(char *arg, char *value) {
-  if (!string_is_number(value)) {
-    invalid_value(arg, value);
-  }
-  unsigned long long tmp_value = (unsigned long long)atoll(value);
-  if (tmp_value >= 65536) {
-    invalid_value(arg, value);
-  }
-  return (unsigned short)tmp_value;
+  return (unsigned int)tmp_value;
 }
 
 Parameters args_parse(int argc, char **argv) {
@@ -80,10 +71,11 @@ Parameters args_parse(int argc, char **argv) {
   char *arg;
   char *value;
 
+  params.hot_reload = false;
   params.screen = 0;
   params.frag_path = 0;
   params.frag_config_path = 0;
-  params.hot_reload = false;
+  params.internal_size = 720;
   params.base_tempo = 60.0f;
   params.demo = false;
 
@@ -98,13 +90,15 @@ Parameters args_parse(int argc, char **argv) {
     } else if (is_arg(arg, "-hr") || is_arg(arg, "--hot-reload")) {
       params.hot_reload = true;
     } else if (is_arg(arg, "-s") || is_arg(arg, "--screen")) {
-      params.screen = parse_uchar(arg, value);
+      params.screen = parse_uint(arg, value);
     } else if (is_arg(arg, "-f") || is_arg(arg, "--frag")) {
       params.frag_path = value;
     } else if (is_arg(arg, "-fc") || is_arg(arg, "--frag-config")) {
       params.frag_config_path = value;
     } else if (is_arg(arg, "-t") || is_arg(arg, "--tempo")) {
-      params.base_tempo = (float)parse_ushort(arg, value);
+      params.base_tempo = (float)parse_uint(arg, value);
+    } else if (is_arg(arg, "-is") || is_arg(arg, "--internal-size")) {
+      params.internal_size = (float)parse_uint(arg, value);
     } else if (is_arg(arg, "--demo")) {
       params.demo = true;
     } else {

src/forge.c

@@ -175,6 +175,8 @@ void forge_run(Parameters params) {
 
   window_get_context(window, &context);
 
+  context.internal_size = params.internal_size;
+
   program = shaders_init(fragment_shaders, shader_config, context);
 
   init_context(program, &context, params);

src/shaders.c

@@ -49,8 +49,10 @@ static void init_textures(ShaderProgram *program, Context context) {
     glBindTexture(GL_TEXTURE_2D, program->textures[i]);
 
     // define texture image as empty
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, context.width, context.height, 0,
-                 GL_RGB, GL_UNSIGNED_BYTE, 0);
+    glTexImage2D(
+        GL_TEXTURE_2D, 0, GL_RGB,
+        (int)(context.internal_size * (float)context.width / context.height),
+        context.internal_size, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
 
     // setup mipmap context
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
@@ -288,8 +290,10 @@ static void update_viewport(ShaderProgram program, Context context) {
     // clean and resize all textures
     for (i = 0; i < program.tex_count; i++) {
       glActiveTexture(GL_TEXTURE0 + i);
-      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, context.width, context.height, 0,
-                   GL_RGB, GL_UNSIGNED_BYTE, 0);
+      glTexImage2D(
+          GL_TEXTURE_2D, 0, GL_RGB,
+          (int)(context.internal_size * (float)context.width / context.height),
+          context.internal_size, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
     }
   }
 }
@@ -362,5 +366,5 @@ void shaders_apply(ShaderProgram program, Context context) {
     }
   }
 
-  use_program(program, program.frag_output_index, true, context);
+  use_program(program, program.frag_monitor_index, true, context);
 }

src/types.h

@@ -16,6 +16,7 @@ typedef struct Parameters {
   bool hot_reload;
   float base_tempo;
   bool demo;
+  unsigned int internal_size;
 } Parameters;
 
 typedef struct Vertex {
@@ -73,6 +74,7 @@ typedef GLFWwindow Window;
 typedef struct Context {
   int width;
   int height;
+  unsigned int internal_size;
   double time;
   unsigned int fps;
   float tempo;