first commit

src/engine/shader.c

@@ -0,0 +1,128 @@
+#include "shader.h"
+
+static bool _shader_compile(u32 handle);
+
+static bool
+_shader_compile(u32 handle)
+{
+ 	s32 success;
+	char log[SHADER_LOG_BUFFER_SIZE];
+
+ 	glCompileShader(handle);
+	glGetShaderiv(handle, GL_COMPILE_STATUS, &success);
+
+	if (!success)
+	{
+		glGetShaderInfoLog(handle, SHADER_LOG_BUFFER_SIZE, NULL, log);
+		printf(STRING_SHADER_COMPILE_ERROR, handle, log);
+		return false;
+	}
+	else
+		printf(STRING_SHADER_COMPILE_SUCCESS, handle);
+	
+	return true;
+}
+
+bool
+shader_init(Shader* self, const char* vertex, const char* fragment)
+{
+	GLuint vertexHandle;
+	GLuint fragmentHandle;
+
+	memset(self, '\0', sizeof(struct Shader));
+
+	vertexHandle = glCreateShader(GL_VERTEX_SHADER);
+	fragmentHandle = glCreateShader(GL_FRAGMENT_SHADER);
+
+	glShaderSource(vertexHandle, 1, &vertex, NULL);
+	glShaderSource(fragmentHandle, 1, &fragment, NULL);
+
+	if (!_shader_compile(vertexHandle) || !_shader_compile(fragmentHandle))
+		return false;
+
+	self->handle = glCreateProgram();
+
+	glAttachShader(self->handle, vertexHandle);
+	glAttachShader(self->handle, fragmentHandle);
+
+	glLinkProgram(self->handle);
+
+	glDeleteShader(vertexHandle);
+	glDeleteShader(fragmentHandle);
+
+	self->isInit = true;
+
+	return true;
+}
+
+void
+shader_use(Shader* self)
+{
+	glUseProgram(self->handle);
+}
+
+void
+shader_free(Shader* self)
+{
+	if (self->isInit)
+	{
+		glDeleteProgram(self->handle);
+		self->isInit = false;
+	}
+}
+
+void
+shader_uniform_s32_set(Shader* self, const char* name, s32 value) 
+{
+	glUniform1i(glGetUniformLocation(self->handle, name), value); 
+}
+
+void
+shader_uniform_u32_set(Shader* self, const char* name, u32 value) 
+{
+	glUniform1ui(glGetUniformLocation(self->handle, name), value); 
+}
+
+void
+shader_uniform_bool_set(Shader* self, const char* name, bool value) 
+{
+	glUniform1i(glGetUniformLocation(self->handle, name), value); 
+}
+
+void
+shader_uniform_f32_set(Shader* self, const char* name, f32 value) 
+{ 
+	glUniform1f(glGetUniformLocation(self->handle, name), value); 
+}
+
+void
+shader_uniform_vec2_set(Shader* self, const char* name, vec2 value)
+{
+	glUniform2fv(glGetUniformLocation(self->handle, name), 1, value);
+}
+
+void
+shader_uniform_vec3_set(Shader* self, const char* name, vec3 value)
+{
+	glUniform3fv(glGetUniformLocation(self->handle, name), 1, value);
+}
+
+void
+shader_uniform_vec4_set(Shader* self, const char* name, vec4 value)
+{
+	glUniform4fv(glGetUniformLocation(self->handle, name), 1, value);
+}
+
+void
+shader_uniform_mat4_set(Shader* self, const char* name, mat4 value)
+{
+	glUniformMatrix4fv(glGetUniformLocation(self->handle, name), 1, GL_FALSE, (f32*)value);
+}
+
+void
+shader_uniform_texture_set(Shader* self, const char* name, Texture* texture, s32 index)
+{
+	glActiveTexture(GL_TEXTURE0 + index);
+	texture_bind(texture);
+	glUniform1i(glGetUniformLocation(self->handle, name), index);
+}