// The subset of OpenGL (ES 3.0 / WebGL2) that the renderer uses, declared with the same names and
// signatures as the native GL module. Each call is a WASM import implemented as a one-liner in web/taskforge.js,
// so render.jai is the same code on both platforms.

GLenum     :: u32;
GLuint     :: u32;
GLint      :: s32;
GLsizei    :: u32;
GLboolean  :: u8;
GLbitfield :: u32;
GLfloat    :: float;
GLchar     :: u8;
GLsizeiptr :: s64;

GL_FALSE                :: 0;
GL_TRUE                 :: 1;
GL_TRIANGLES            :: 0x0004;
GL_SRC_ALPHA            :: 0x0302;
GL_ONE_MINUS_SRC_ALPHA  :: 0x0303;
GL_CULL_FACE            :: 0x0B44;
GL_DEPTH_TEST           :: 0x0B71;
GL_BLEND                :: 0x0BE2;
GL_SCISSOR_TEST         :: 0x0C11;
GL_UNPACK_ALIGNMENT     :: 0x0CF5;
GL_TEXTURE_2D           :: 0x0DE1;
GL_UNSIGNED_BYTE        :: 0x1401;
GL_FLOAT                :: 0x1406;
GL_RED                  :: 0x1903;
GL_LINEAR               :: 0x2601;
GL_TEXTURE_MAG_FILTER   :: 0x2800;
GL_TEXTURE_MIN_FILTER   :: 0x2801;
GL_TEXTURE_WRAP_S       :: 0x2802;
GL_TEXTURE_WRAP_T       :: 0x2803;
GL_COLOR_BUFFER_BIT     :: 0x4000;
GL_CLAMP_TO_EDGE        :: 0x812F;
GL_R8                   :: 0x8229;
GL_TEXTURE0             :: 0x84C0;
GL_ARRAY_BUFFER         :: 0x8892;
GL_STREAM_DRAW          :: 0x88E0;
GL_FRAGMENT_SHADER      :: 0x8B30;
GL_VERTEX_SHADER        :: 0x8B31;
GL_COMPILE_STATUS       :: 0x8B81;
GL_LINK_STATUS          :: 0x8B82;
GL_INFO_LOG_LENGTH      :: 0x8B84;

glCreateShader            :: (type: GLenum) -> GLuint #foreign;
glShaderSource            :: (shader: GLuint, count: GLsizei, strings: **GLchar, lengths: *GLint) #foreign;
glCompileShader           :: (shader: GLuint) #foreign;
glGetShaderiv             :: (shader: GLuint, pname: GLenum, params: *GLint) #foreign;
glGetShaderInfoLog        :: (shader: GLuint, max_length: GLsizei, length: *GLsizei, info_log: *GLchar) #foreign;
glCreateProgram           :: () -> GLuint #foreign;
glAttachShader            :: (program: GLuint, shader: GLuint) #foreign;
glBindAttribLocation      :: (program: GLuint, index: GLuint, name: *GLchar) #foreign;
glLinkProgram             :: (program: GLuint) #foreign;
glGetProgramiv            :: (program: GLuint, pname: GLenum, params: *GLint) #foreign;
glGetProgramInfoLog       :: (program: GLuint, max_length: GLsizei, length: *GLsizei, info_log: *GLchar) #foreign;
glUseProgram              :: (program: GLuint) #foreign;
glGetUniformLocation      :: (program: GLuint, name: *GLchar) -> GLint #foreign;
glUniform1i               :: (location: GLint, v0: GLint) #foreign;
glUniform1f               :: (location: GLint, v0: GLfloat) #foreign;
glUniform2f               :: (location: GLint, v0: GLfloat, v1: GLfloat) #foreign;
glGenVertexArrays         :: (n: GLsizei, arrays: *GLuint) #foreign;
glBindVertexArray         :: (array: GLuint) #foreign;
glGenBuffers              :: (n: GLsizei, buffers: *GLuint) #foreign;
glBindBuffer              :: (target: GLenum, buffer: GLuint) #foreign;
glBufferData              :: (target: GLenum, size: GLsizeiptr, data: *void, usage: GLenum) #foreign;
glVertexAttribPointer     :: (index: GLuint, size: GLint, type: GLenum, normalized: GLboolean, stride: GLsizei, pointer: *void) #foreign;
glEnableVertexAttribArray :: (index: GLuint) #foreign;
glGenTextures             :: (n: GLsizei, textures: *GLuint) #foreign;
glBindTexture             :: (target: GLenum, texture: GLuint) #foreign;
glActiveTexture           :: (texture: GLenum) #foreign;
glTexImage2D              :: (target: GLenum, level: GLint, internal_format: GLint, width: GLsizei, height: GLsizei, border: GLint, format: GLenum, type: GLenum, pixels: *void) #foreign;
glTexParameteri           :: (target: GLenum, pname: GLenum, param: GLint) #foreign;
glPixelStorei             :: (pname: GLenum, param: GLint) #foreign;
glEnable                  :: (cap: GLenum) #foreign;
glDisable                 :: (cap: GLenum) #foreign;
glBlendFunc               :: (sfactor: GLenum, dfactor: GLenum) #foreign;
glScissor                 :: (x: GLint, y: GLint, width: GLsizei, height: GLsizei) #foreign;
glViewport                :: (x: GLint, y: GLint, width: GLsizei, height: GLsizei) #foreign;
glClearColor              :: (r: GLfloat, g: GLfloat, b: GLfloat, a: GLfloat) #foreign;
glClear                   :: (mask: GLbitfield) #foreign;
glDrawArrays              :: (mode: GLenum, first: GLint, count: GLsizei) #foreign;