More errors handling.

__init__.py

@@ -21,6 +21,12 @@ _engine = ctypes.cdll.LoadLibrary(Path(__file__).parent / "engine.so")
 
 # types.hpp
 
+_handle = ctypes.c_void_p
+
+def _check_handle(result, func, arguments):
+    assert result
+    return result
+
 def _flag(x):
     return 1 << x
 
@@ -138,6 +144,7 @@ mat4_identity = mat4(
     vec4_origin)
 
 vec3_rotate = _engine.rk_vec3_rotate
+vec3_rotate.restype = None
 vec3_rotate.argtypes = (
     _vec3_p, # ret
     _vec3_p, # vec3
@@ -145,30 +152,35 @@ vec3_rotate.argtypes = (
     ctypes.c_float) # angle
 
 vec3_mul_vec3 = _engine.rk_vec3_mul_vec3
+vec3_mul_vec3.restype = None
 vec3_mul_vec3.argtypes = (
     _vec3_p, # ret
     _vec3_p, # a
     _vec3_p) # b
 
 mat3_rotation = _engine.rk_mat3_rotation
+mat3_rotation.restype = None
 mat3_rotation.argtypes = (
     _mat3_p, # ret
     _vec3_p, # axis
     ctypes.c_float) # angle
 
 mat3_mul_vec3 = _engine.rk_mat3_mul_vec3
+mat3_mul_vec3.restype = None
 mat3_mul_vec3.argtypes = (
     _vec3_p, # ret
     _mat3_p, # a
     _vec3_p) # b
 
 mat3_mul_mat3 = _engine.rk_mat3_mul_mat3
+mat3_mul_mat3.restype = None
 mat3_mul_mat3.argtypes = (
     _mat3_p, # ret
     _mat3_p, # a
     _mat3_p) # b
 
 mat4_projection = _engine.rk_mat4_projection
+mat4_projection.restype = None
 mat4_projection.argtypes = (
     _mat4_p, # ret
     ctypes.c_float, # hfov
@@ -177,12 +189,14 @@ mat4_projection.argtypes = (
     ctypes.c_float) # far
 
 mat4_lookat = _engine.rk_mat4_lookat
+mat4_lookat.restype = None
 mat4_lookat.argtypes = (
     _mat4_p, # ret
     _vec3_p, # position
     _vec3_p) # lookat
 
 mat4_orbit = _engine.rk_mat4_orbit
+mat4_orbit.restype = None
 mat4_orbit.argtypes = (
     _mat4_p, # ret
     _vec3_p, # origin
@@ -191,6 +205,7 @@ mat4_orbit.argtypes = (
     ctypes.c_float) # distance
 
 mat4_mul_vec3 = _engine.rk_mat4_mul_vec3
+mat4_mul_vec3.restype = None
 mat4_mul_vec3.argtypes = (
     _vec3_p, # ret
     _mat4_p, # a
@@ -198,12 +213,14 @@ mat4_mul_vec3.argtypes = (
     ctypes.c_float) # w
 
 mat4_mul_vec4 = _engine.rk_mat4_mul_vec4
+mat4_mul_vec4.restype = None
 mat4_mul_vec4.argtypes = (
     _vec4_p, # ret
     _mat4_p, # a
     _vec4_p) # b
 
 mat4_mul_mat4 = _engine.rk_mat4_mul_mat4
+mat4_mul_mat4.restype = None
 mat4_mul_mat4.argtypes = (
     _mat4_p, # ret
     _mat4_p, # a
@@ -212,17 +229,20 @@ mat4_mul_mat4.argtypes = (
 # display.hpp
 
 create_display = _engine.rk_create_display
-create_display.restype = ctypes.c_void_p
+create_display.restype = _handle
+create_display.errcheck = _check_handle
 create_display.argtypes = (
     ctypes.c_char_p, # name
     ctypes.c_uint, # width
     ctypes.c_uint) # height
 
 destroy_display = _engine.rk_destroy_display
+destroy_display.restype = None
 destroy_display.argtypes = (
     ctypes.c_void_p,) # display
 
 swap_buffers = _engine.rk_swap_buffers
+swap_buffers.restype = None
 swap_buffers.argtypes = (
     ctypes.c_void_p,) # display
 
@@ -279,13 +299,16 @@ INSTANCE_FLAG_VISIBLE = _flag(1)
 BATCH_MAX_SIZE = 65536
 
 render_initialize = _engine.rk_render_initialize
+render_initialize.restype = None
 render_initialize.argtypes = (
     ctypes.c_bool,) # debug
 
 render_terminate = _engine.rk_render_terminate
+render_terminate.restype = None
 
 _load_shader = _engine.rk_load_shader
-_load_shader.restype = ctypes.c_void_p
+_load_shader.restype = _handle
+_load_shader.errcheck = _check_handle
 _load_shader.argtypes = (
     ctypes.c_uint, # vert_nlines
     ctypes.POINTER(ctypes.c_char_p), # vert_lines
@@ -302,19 +325,20 @@ def load_shader(vert_lines, frag_lines):
     return _load_shader(vert_nlines, vert_lines, frag_nlines, frag_lines)
 
 resolve_input = _engine.rk_resolve_input
-resolve_input.restype = ctypes.c_void_p
+resolve_input.restype = _handle
 resolve_input.argtypes = (
     ctypes.c_void_p, # shader
     ctypes.c_char_p) # name
 
 resolve_param = _engine.rk_resolve_param
-resolve_param.restype = ctypes.c_void_p
+resolve_param.restype = _handle
 resolve_param.argtypes = (
     ctypes.c_void_p, # shader
     ctypes.c_char_p) # name
 
 _create_texture = _engine.rk_create_texture
-_create_texture.restype = ctypes.c_void_p
+_create_texture.restype = _handle
+_create_texture.errcheck = _check_handle
 _create_texture.argtypes = (
     ctypes.c_uint, # format
     ctypes.c_uint, # width
@@ -329,7 +353,8 @@ def create_texture(format, width, height, nlevels, flags, pixels):
     return _create_texture(format, width, height, nlevels, flags, _void_addr(pixels))
 
 _create_triangles = _engine.rk_create_triangles
-_create_triangles.restype = ctypes.c_void_p
+_create_triangles.restype = _handle
+_create_triangles.errcheck = _check_handle
 _create_triangles.argtypes = (
     ctypes.c_uint, # nvertices
     ctypes.c_void_p) # vertices
@@ -339,7 +364,8 @@ def create_triangles(vertices):
     return _create_triangles(len(vertices) // 3, _float_addr(vertices))
 
 _create_vertices = _engine.rk_create_vertices
-_create_vertices.restype = ctypes.c_void_p
+_create_vertices.restype = _handle
+_create_vertices.errcheck = _check_handle
 _create_vertices.argtypes = (
     ctypes.c_char_p, # format
     ctypes.c_uint, # nvertices
@@ -351,7 +377,8 @@ def create_vertices(format, nvertices, vertices, indices):
     return _create_vertices(format, nvertices, _ubyte_addr(vertices), len(indices), _ushort_addr(indices))
 
 create_batch = _engine.rk_create_batch
-create_batch.restype = ctypes.c_void_p
+create_batch.restype = _handle
+create_batch.errcheck = _check_handle
 create_batch.argtypes = (
     ctypes.c_void_p, # vertices
     ctypes.c_uint, # max_size
@@ -359,52 +386,63 @@ create_batch.argtypes = (
     ctypes.c_char_p) # params_format
 
 begin_frame = _engine.rk_begin_frame
+begin_frame.restype = None
 
 select_shader = _engine.rk_select_shader
+select_shader.restype = None
 select_shader.argtypes = (
     ctypes.c_void_p,) # shader
 
 set_input_float = _engine.rk_set_input_float
+set_input_float.restype = None
 set_input_float.argtypes = (
     ctypes.c_void_p, # input
     ctypes.c_float) # value
 
 set_input_vec3 = _engine.rk_set_input_vec3
+set_input_vec3.restype = None
 set_input_vec3.argtypes = (
     ctypes.c_void_p, # input
     _vec3_p) # value
 
 set_input_mat3 = _engine.rk_set_input_mat3
+set_input_mat3.restype = None
 set_input_mat3.argtypes = (
     ctypes.c_void_p, # input
     _mat3_p) # value
 
 set_input_mat4 = _engine.rk_set_input_mat4
+set_input_mat4.restype = None
 set_input_mat4.argtypes = (
     ctypes.c_void_p, # input
     _mat4_p) # value
 
 set_param_vec3 = _engine.rk_set_param_vec3
+set_param_vec3.restype = None
 set_param_vec3.argtypes = (
     ctypes.c_uint, # layout
     _vec3_p) # value
 
 set_param_mat3 = _engine.rk_set_param_mat3
+set_param_mat3.restype = None
 set_param_mat3.argtypes = (
     ctypes.c_uint, # layout
     _mat3_p) # value
 
 select_texture = _engine.rk_select_texture
+select_texture.restype = None
 select_texture.argtypes = (
     ctypes.c_uint, # slot
     ctypes.c_void_p, # texture
     ctypes.c_void_p) # sampler
 
 draw_triangles = _engine.rk_draw_triangles
+draw_triangles.restype = None
 draw_triangles.argtypes = (
     ctypes.c_void_p,) # triangles
 
 draw_batch = _engine.rk_draw_batch
+draw_batch.restype = None
 draw_batch.argtypes = (
     ctypes.c_void_p, # batch
     ctypes.c_uint, # count
@@ -413,33 +451,41 @@ draw_batch.argtypes = (
     ctypes.POINTER(ctypes.c_void_p)) # params
 
 unselect_texture = _engine.rk_unselect_texture
+unselect_texture.restype = None
 unselect_texture.argtypes = (
     ctypes.c_uint, # slot
     ctypes.c_void_p) # texture
 
 unselect_shader = _engine.rk_unselect_shader
+unselect_shader.restype = None
 unselect_shader.argtypes = (
     ctypes.c_void_p,) # shader
 
 end_frame = _engine.rk_end_frame
+end_frame.restype = None
 
 destroy_batch = _engine.rk_destroy_batch
+destroy_batch.restype = None
 destroy_batch.argtypes = (
     ctypes.c_void_p,) # batch
 
 destroy_triangles = _engine.rk_destroy_triangles
+destroy_triangles.restype = None
 destroy_triangles.argtypes = (
     ctypes.c_void_p,) # triangles
 
 destroy_vertices = _engine.rk_destroy_vertices
+destroy_vertices.restype = None
 destroy_vertices.argtypes = (
     ctypes.c_void_p,) # vertices
 
 destroy_texture = _engine.rk_destroy_texture
+destroy_texture.restype = None
 destroy_texture.argtypes = (
     ctypes.c_void_p,) # texture
 
 destroy_shader = _engine.rk_destroy_shader
+destroy_shader.restype = None
 destroy_shader.argtypes = (
     ctypes.c_void_p,) # shader
 
@@ -483,21 +529,25 @@ class Event(ctypes.Structure):
     _fields_ = ('type', ctypes.c_uint), ('data', _Events)
 
 create_events = _engine.rk_create_events
-create_events.restype = ctypes.c_void_p
+create_events.restype = _handle
+create_events.errcheck = _check_handle
 create_events.argtypes = (
     ctypes.c_void_p,) # display
 
 destroy_events = _engine.rk_destroy_events
+destroy_events.restype = None
 destroy_events.argtypes = (
     ctypes.c_void_p, # display
     ctypes.c_void_p) # events
 
 set_key_autorepeat = _engine.rk_set_key_autorepeat
+set_key_autorepeat.restype = None
 set_key_autorepeat.argtypes = (
     ctypes.c_void_p, # events
     ctypes.c_bool) # autorepeat
 
 set_motion_acceleration = _engine.rk_set_motion_acceleration
+set_motion_acceleration.restype = None
 set_motion_acceleration.argtypes = (
     ctypes.c_void_p, # events
     ctypes.c_uint, # numerator

cpp/render/render_opengles.cpp

@@ -32,8 +32,6 @@ static void rk_printf(char const * message) {
     printf("[RK] %s\n", message);
 }
 
-#define rk_gl_error(_message) { if (glGetError() != GL_NO_ERROR) { printf("[GL] %s\n", (_message)); } }
-
 static void rk_debug_message_callback(
     GLenum source,
     GLenum type,
@@ -55,6 +53,16 @@ void rk_render_initialize(
     printf("[GL] version: %s, language: %s\n", version, language);
 
     if (debug) {
+        GLint max_texture_layers = 0;
+        glGetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, &max_texture_layers);
+        printf("[GL] Max texture layers: %d\n", max_texture_layers);
+        GLint max_vertex_attribs = 0;
+        glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &max_vertex_attribs);
+        printf("[GL] Max vertex attribs: %d\n", max_vertex_attribs);
+        GLint max_vertex_bindings = 0;
+        glGetIntegerv(GL_MAX_VERTEX_ATTRIB_BINDINGS, &max_vertex_bindings);
+        printf("[GL] Max vertex bindings: %d\n", max_vertex_bindings);
+
         glDebugMessageCallback(rk_debug_message_callback, nullptr);
         glEnable(GL_DEBUG_OUTPUT);
     }
@@ -73,7 +81,7 @@ void rk_render_initialize(
     }
 
     glDisable(GL_BLEND);
-    glEnable(GL_DITHER);
+    glDisable(GL_DITHER);
     glEnable(GL_DEPTH_TEST);
     glDisable(GL_SCISSOR_TEST);
     glDisable(GL_STENCIL_TEST);
@@ -86,60 +94,79 @@ void rk_render_initialize(
 void rk_render_terminate() {
 }
 
+static char rk_infolog[1024];
+
 static void rk_print_shader_infolog(GLuint shader) {
     GLsizei length;
-    char infolog[1024];
-    glGetShaderInfoLog(shader, sizeof(infolog), &length, infolog);
+    glGetShaderInfoLog(shader, sizeof(rk_infolog) - 1, &length, rk_infolog);
     if (length > 0) {
-        rk_printf(infolog);
+        rk_gl_printf(rk_infolog);
     }
 }
 
 static void rk_print_program_infolog(GLuint program) {
     GLsizei length;
-    char infolog[1024];
-    glGetProgramInfoLog(program, sizeof(infolog), &length, infolog);
+    glGetProgramInfoLog(program, sizeof(rk_infolog) - 1, &length, rk_infolog);
     if (length > 0) {
-        rk_printf(infolog);
+        rk_gl_printf(rk_infolog);
     }
 }
 
-//TODO: error handling
 rk_shader_t rk_load_shader(
     rk_uint const vert_nlines,
     char const ** const vert_lines,
     rk_uint const frag_nlines,
     char const ** const frag_lines) {
-    rk_shader * const shader = new rk_shader;
-    shader->vertex = glCreateShader(GL_VERTEX_SHADER);
-    shader->fragment = glCreateShader(GL_FRAGMENT_SHADER);
-    shader->program = glCreateProgram();
-    if (!vert_nlines || !vert_lines) {
-        rk_printf("Missing vertex shader.");
-        return nullptr;
-    }
-    if (!frag_nlines || !frag_lines) {
-        rk_printf("Missing fragment shader.");
-        return nullptr;
+    if (!vert_nlines || !vert_lines || !frag_nlines || !frag_lines) {
+        rk_printf("rk_load_shader(): invalid params.");
+        return RK_INVALID_HANDLE;
     }
     rk_printf("Compiling vertex shader...");
-    glShaderSource(shader->vertex, vert_nlines, vert_lines, nullptr);
-    glCompileShader(shader->vertex);
-    rk_gl_error("glCompileShader() failed.");
-    rk_print_shader_infolog(shader->vertex);
+    while (glGetError() != GL_NO_ERROR);
+    GLuint const vert = glCreateShader(GL_VERTEX_SHADER);
+    glShaderSource(vert, vert_nlines, vert_lines, nullptr);
+    glCompileShader(vert);
+    GLint vert_success = 0;
+    glGetShaderiv(vert, GL_COMPILE_STATUS, &vert_success);
+    if (!vert_success || glGetError() != GL_NO_ERROR) {
+        rk_print_shader_infolog(vert);
+        glDeleteShader(vert);
+        return RK_INVALID_HANDLE;
+    }
     rk_printf("Compiling fragment shader...");
-    glShaderSource(shader->fragment, frag_nlines, frag_lines, nullptr);
-    glCompileShader(shader->fragment);
-    rk_gl_error("glCompileShader() failed.");
-    rk_print_shader_infolog(shader->fragment);
+    while (glGetError() != GL_NO_ERROR);
+    GLuint const frag = glCreateShader(GL_FRAGMENT_SHADER);
+    glShaderSource(frag, frag_nlines, frag_lines, nullptr);
+    glCompileShader(frag);
+    GLint frag_success = 0;
+    glGetShaderiv(frag, GL_COMPILE_STATUS, &frag_success);
+    if (!frag_success || glGetError() != GL_NO_ERROR) {
+        rk_print_shader_infolog(frag);
+        glDeleteShader(vert);
+        glDeleteShader(frag);
+        return RK_INVALID_HANDLE;
+    }
     rk_printf("Linking program...");
-    glAttachShader(shader->program, shader->vertex);
-    glAttachShader(shader->program, shader->fragment);
-    glLinkProgram(shader->program);
-    rk_gl_error("glLinkProgram() failed.");
-    rk_print_program_infolog(shader->program);
+    while (glGetError() != GL_NO_ERROR);
+    GLuint prog = glCreateProgram();
+    glAttachShader(prog, vert);
+    glAttachShader(prog, frag);
+    glLinkProgram(prog);
+    GLint prog_success = 0;
+    glGetProgramiv(prog, GL_LINK_STATUS, &prog_success);
+    if (!prog_success || glGetError() != GL_NO_ERROR) {
+        rk_print_program_infolog(prog);
+        glDeleteShader(vert);
+        glDeleteShader(frag);
+        glDeleteProgram(prog);
+        return RK_INVALID_HANDLE;
+    }
     rk_printf("Done.");
     glReleaseShaderCompiler();
+    rk_shader * const shader = new rk_shader;
+    shader->vertex = vert;
+    shader->fragment = frag;
+    shader->program = prog;
     return reinterpret_cast<rk_shader_t>(shader);
 }
 
@@ -148,9 +175,13 @@ rk_input_t rk_resolve_input(
     char const * name) {
     rk_shader const * const shader = reinterpret_cast<rk_shader const *>(_shader);
     if (!shader || !name) {
-        return nullptr;
+        rk_printf("rk_resolve_input(): invalid params.");
+        return RK_INVALID_HANDLE;
     }
     GLint const uniform = glGetUniformLocation(shader->program, name);
+    if (uniform < 0) {
+        printf("[RK] rk_resolve_input(): uniform %s not found.\n", name);
+    }
     return reinterpret_cast<rk_input_t>(uniform + 1);
 }
 
@@ -159,9 +190,13 @@ rk_param_t rk_resolve_param(
     char const * name) {
     rk_shader const * const shader = reinterpret_cast<rk_shader const *>(_shader);
     if (!shader || !name) {
-        return nullptr;
+        rk_printf("rk_resolve_param(): invalid params.");
+        return RK_INVALID_HANDLE;
     }
     GLint const location = glGetAttribLocation(shader->program, name);
+    if (location < 0) {
+        printf("[RK] rk_resolve_param(): attrib %s not found.\n", name);
+    }
     return reinterpret_cast<rk_param_t>(location + 1);
 }
 
@@ -173,7 +208,8 @@ rk_texture_t rk_create_texture(
     rk_texture_flags flags,
     rk_ubyte const * pixels) {
     if (!width || !height || !pixels) {
-        return nullptr;
+        rk_printf("rk_create_texture(): invalid params.");
+        return RK_INVALID_HANDLE;
     }
     GLint internal_format;
     GLenum source_format;
@@ -200,7 +236,8 @@ rk_texture_t rk_create_texture(
             source_type =  GL_FLOAT;
             break;
         default:
-            return nullptr;
+            rk_printf("rk_create_texture(): invalid texture format.");
+            return RK_INVALID_HANDLE;
             break;
     }
     rk_texture * const texture = new rk_texture;
@@ -254,7 +291,8 @@ rk_triangles_t rk_create_triangles(
     rk_uint nvertices,
     rk_vec3 const * vertices) {
     if (!nvertices || !vertices) {
-        return nullptr;
+        rk_printf("rk_create_triangles(): invalid params.");
+        return RK_INVALID_HANDLE;
     }
     rk_triangles * const triangles = new rk_triangles;
     triangles->size = nvertices;
@@ -277,7 +315,8 @@ rk_vertices_t rk_create_vertices(
     rk_uint nindices,
     rk_ushort const * indices) {
     if (!format || !nvertices || !_vertices || !nindices || !indices) {
-        return nullptr;
+        rk_printf("rk_create_vertices(): invalid params.");
+        return RK_INVALID_HANDLE;
     }
     unsigned format_size = 0;
     unsigned vertex_size = 0;
@@ -293,14 +332,14 @@ rk_vertices_t rk_create_vertices(
                 vertex_size += sizeof(rk_vec3_uint10);
                 break;
             default:
-                rk_printf("rk_create_vertices(): invalid format.");
-                return nullptr;
+                rk_printf("rk_create_vertices(): invalid vertex format.");
+                return RK_INVALID_HANDLE;
                 break;
         }
     }
     if (!format_size) {
-        rk_printf("rk_create_vertices(): empty format.");
-        return nullptr;
+        rk_printf("rk_create_vertices(): empty vertex format.");
+        return RK_INVALID_HANDLE;
     }
     rk_vertices * const vertices = new rk_vertices;
     vertices->nvertices = nvertices;
@@ -452,8 +491,8 @@ rk_batch_t rk_create_batch(
     rk_param_format const * params_format) {
     rk_vertices const * const vertices = reinterpret_cast<rk_vertices const *>(_vertices);
     if (!vertices || !max_size || max_size > RK_BATCH_MAX_SIZE) {
-        rk_printf("rk_create_batch(): invalid parameters.");
-        return nullptr;
+        rk_printf("rk_create_batch(): invalid params.");
+        return RK_INVALID_HANDLE;
     }
     unsigned vertex_size = 0;
     for (rk_vertex_format const * f = vertices->format; *f; ++f) {
@@ -491,7 +530,7 @@ rk_batch_t rk_create_batch(
                     break;
                 default:
                     rk_printf("rk_create_batch(): invalid param format.");
-                    return nullptr;
+                    return RK_INVALID_HANDLE;
                     break;
             }
         }

cpp/types.hpp

@@ -36,4 +36,6 @@ typedef uint64_t rk_ulong;
 
 typedef void * rk_handle_t;
 
+#define RK_INVALID_HANDLE nullptr
+
 #endif // _RK_ENGINE_TYPES_H