fixed stb_image.h

cf9856d fixed file.h

git-subtree-dir: lib/advanced_C_standard_liberary
git-subtree-split: cf9856d0614a5a4ac4b27c1f5b615a9fb0fb4d0e

.gitignore

@@ -67,3 +67,4 @@ _deps
 
 # other stuff
 update_subtree.sh
+.clangd

CMakeLists.txt

@@ -1,7 +1,7 @@
 project(minecraft-clone C)
 cmake_minimum_required(VERSION 3.9)
 set( CMAKE_EXPORT_COMPILE_COMMANDS ON )
-include_directories(lib/glad/include lib/advanced_C_standard_liberary/include)
+include_directories(lib/glad/include lib/advanced_C_standard_liberary/include include lib/stb/include)
 file(GLOB SOURCES "src/*.c" "lib/*/src/*.c")
 find_program(CCACHE_PROGRAM ccache)
 add_executable(test.out ${SOURCES})

include/main.h

@@ -4,5 +4,6 @@
 #include <GLFW/glfw3.h>
 void glfwError(int id, const char *description);
 void framebuffer_size_callback(GLFWwindow *window, int width, int height);  
-unsigned int parseShader(const char *filePath);
+unsigned int parseShader(const char *filePath, const GLenum shaderType);
+unsigned int linkShader(unsigned int vertexShader, unsigned int fragmentShader);
 #endif

lib/advanced_C_standard_liberary/include/acl/file.h

@@ -1,5 +1,5 @@
 #ifndef acl_file_h
 #define acl_file_h
 #include <stdbool.h>
-char* acl_ReadFileString(char *filePath, bool *sucess);
+char* acl_ReadTextFile(const char *filePath, bool *sucess);
 #endif

lib/advanced_C_standard_liberary/src/file.c

@@ -1,7 +1,7 @@
 #include <stdio.h>
 #include <stdbool.h>
 #include <stdlib.h>
-char* acl_ReadFileString(char *filePath, bool *sucess){
+char* acl_ReadTextFile(const char *filePath, bool *sucess){
 	FILE *fp = fopen(filePath, "rb");
 	size_t lSize;
 	char *buffer;
@@ -20,9 +20,6 @@ char* acl_ReadFileString(char *filePath, bool *sucess){
 	}
 	size_t readReturn = fread(buffer, lSize, 1, fp);
 	fclose(fp);
-	if(readReturn != 1) {
-		*sucess = false;
-	}
-	*sucess = true;
+	*sucess = readReturn == 1;
 	return buffer;
 }

lib/stb/LICENSE

@@ -0,0 +1,37 @@
+This software is available under 2 licenses -- choose whichever you prefer.
+------------------------------------------------------------------------------
+ALTERNATIVE A - MIT License
+Copyright (c) 2017 Sean Barrett
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+------------------------------------------------------------------------------
+ALTERNATIVE B - Public Domain (www.unlicense.org)
+This is free and unencumbered software released into the public domain.
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
+software, either in source code form or as a compiled binary, for any purpose,
+commercial or non-commercial, and by any means.
+In jurisdictions that recognize copyright laws, the author or authors of this
+software dedicate any and all copyright interest in the software to the public
+domain. We make this dedication for the benefit of the public at large and to
+the detriment of our heirs and successors. We intend this dedication to be an
+overt act of relinquishment in perpetuity of all present and future rights to
+this software under copyright law.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

shader/test.frag

@@ -0,0 +1,7 @@
+#version 330 core
+out vec4 FragColor;
+
+void main()
+{
+    FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);
+} 

shader/test.vert

@@ -0,0 +1,7 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+
+void main()
+{
+    gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
+}

src/main.c

@@ -4,7 +4,9 @@
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 #include "main.h"
-
+#include <acl/file.h>
+#define STB_IMAGE_IMPLEMENTATION
+#include <stb_image.h>
 int main() {
 	if(!glfwInit()) {
 		printf("Faild to initalize GLFW\n");
@@ -31,18 +33,39 @@ int main() {
 	glViewport(0, 0, 1920, 1080);
 	glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
 	glfwSetInputMode(window, GLFW_STICKY_KEYS, GL_TRUE);
+	// texture settings
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
+	float borderColor[] = { 1.0f, 1.0f, 1.0f, 0.0f, 1.0f };
+	glad_glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 	float vertices[] = {
 		-0.5f, -0.5f, 0.0f,
 		0.5f, -0.5f, 0.0f,
 		0.0f,  0.5f, 0.0f
 	};
+	// parse shader
+	unsigned int vertexShader = parseShader("shader/test.vert", GL_VERTEX_SHADER);
+	unsigned int fragmentShader = parseShader("shader/test.frag", GL_FRAGMENT_SHADER);
+	unsigned int shaderProgram = linkShader(vertexShader, fragmentShader);
+	glUseProgram(shaderProgram);
 	unsigned int VBO;
-	glGenBuffers(1, &VBO);
+	glGenBuffers(1, &VBO);  
 	glBindBuffer(GL_ARRAY_BUFFER, VBO);
 	glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
+	unsigned int VAO;
+	glGenVertexArrays(1, &VAO);
+	glBindVertexArray(VAO);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
+	glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
+	glEnableVertexAttribArray(0);
 	while(!glfwWindowShouldClose(window)) {
 		glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
 		glClear(GL_COLOR_BUFFER_BIT);
+		glUseProgram(shaderProgram);
+		glBindVertexArray(VAO);
+		glDrawArrays(GL_TRIANGLES, 0, 3);
 		glfwSwapBuffers(window);
 		glfwPollEvents();    
 	}
@@ -56,28 +79,44 @@ void glfwError(int id, const char* description) {
 void framebuffer_size_callback(GLFWwindow* window, int width, int height) {
 	glViewport(0, 0, width, height);
 }
-unsigned int parseShader(const char *filePath) {
-	FILE *fp = fopen(filePath, "rb");
-	size_t lSize;
-	char *buffer;
-	if(!fp) {
-		perror(filePath);
+unsigned int parseShader(const char *filePath, const GLenum shaderType) {
+	bool success;
+	unsigned int ShaderId;
+	char *ShaderSrc = acl_ReadTextFile(filePath, &success);
+	if(!success) {
+		printf("Failed to read Shader: %s", filePath);
+		glfwTerminate();
+		exit(-1);
 	}
-	fseek(fp, 0L, SEEK_END);
-	lSize = ftell(fp);
-	rewind(fp);
-	buffer = malloc(lSize + 1);
-	if(!buffer) {
-		fclose(fp);
-		printf("out of memory");
-		exit(1);
+	ShaderId = glCreateShader(shaderType);
+	const char *tmpShaderSrc = ShaderSrc;
+	glShaderSource(ShaderId, 1, &tmpShaderSrc, NULL);
+	glCompileShader(ShaderId);
+	free(ShaderSrc);
+	int compileSuccess;
+	glGetShaderiv(ShaderId, GL_COMPILE_STATUS, &compileSuccess);
+	if(!compileSuccess) {
+		char infoLog[512];
+		glGetShaderInfoLog(ShaderId, 512, NULL, infoLog);
+		printf("Failed to compile Shader: %s Error: %s", filePath, infoLog);
 	}
-	size_t readReturn = fread(buffer, lSize, 1, fp);
-	fclose(fp);
-	if(readReturn != 1) {
-		printf("Can't read Shader");
-		exit(1);
-	}
-	printf("%s", buffer);
-	return 0;
+	return ShaderId;
+}
+unsigned int linkShader(unsigned int vertexShader, unsigned int fragmentShader) {
+	unsigned int shaderProgram = glCreateProgram();
+	glAttachShader(shaderProgram, vertexShader);
+	glAttachShader(shaderProgram, fragmentShader);
+	glLinkProgram(shaderProgram);
+	int success;
+	glGetProgramiv(shaderProgram, GL_LINK_STATUS, &success);
+	if(!success) {
+		char infoLog[512];
+		glGetProgramInfoLog(shaderProgram, 512, NULL, infoLog);
+		printf("Failed to link Shader. Error: %s", infoLog);
+		glfwTerminate();
+		exit(-1);
+	}
+	glDeleteShader(vertexShader);
+	glDeleteShader(fragmentShader);
+	return shaderProgram;
 }