diff options
Diffstat (limited to 'src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm')
| -rw-r--r-- | src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm | 527 |
1 files changed, 0 insertions, 527 deletions
diff --git a/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm b/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm deleted file mode 100644 index 561aa2ce5..000000000 --- a/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm +++ /dev/null @@ -1,527 +0,0 @@ -// -// Class Fl_Cocoa_Gl_Window_Driver for the Fast Light Tool Kit (FLTK). -// -// Copyright 2021-2026 by Bill Spitzak and others. -// -// This library is free software. Distribution and use rights are outlined in -// the file "COPYING" which should have been included with this file. If this -// file is missing or damaged, see the license at: -// -// https://www.fltk.org/COPYING.php -// -// Please see the following page on how to report bugs and issues: -// -// https://www.fltk.org/bugs.php -// - -#include <config.h> -#if HAVE_GL -#include <FL/platform.H> -#include <FL/gl.h> -#include "../../Fl_Gl_Choice.H" -#include "../../Fl_Screen_Driver.H" -#include "Fl_Cocoa_Window_Driver.H" -#include "Fl_Cocoa_Gl_Window_Driver.H" -#include <FL/Fl_Graphics_Driver.H> -#include <OpenGL/OpenGL.h> -#include <FL/Fl_Image_Surface.H> -#include <dlfcn.h> - -#import <Cocoa/Cocoa.h> - -/* macOS offers only core contexts when using GL3. This forbids to draw - FLTK widgets in a GL3-using NSOpenGLContext because these widgets are drawn - with the GL1-based Fl_OpenGL_Graphics_Driver. The solution implemented here - is to create an additional NSView and an associated additional NSOpenGLContext - (gl1ctxt) placed above and sized as the GL3-based window, to set the new - NSOpenGLContext non opaque and GL1-based, and to draw the FLTK widgets in the - new view/GL1 context. - */ - -// Describes crap needed to create a GLContext. -class Fl_Cocoa_Gl_Choice : public Fl_Gl_Choice { - friend class Fl_Cocoa_Gl_Window_Driver; -private: - NSOpenGLPixelFormat* pixelformat; -public: - Fl_Cocoa_Gl_Choice(int m, const int *alistp, Fl_Gl_Choice *n) : Fl_Gl_Choice(m, alistp, n) { - pixelformat = NULL; - } -}; - - -Fl_Cocoa_Gl_Window_Driver::Fl_Cocoa_Gl_Window_Driver(Fl_Gl_Window *win) : - Fl_Gl_Window_Driver(win) { - gl1ctxt = NULL; -} - - -Fl_Gl_Window_Driver *Fl_Gl_Window_Driver::newGlWindowDriver(Fl_Gl_Window *w) -{ - return new Fl_Cocoa_Gl_Window_Driver(w); -} - - -static NSOpenGLPixelFormat* mode_to_NSOpenGLPixelFormat(int m, const int *alistp) -{ - NSOpenGLPixelFormatAttribute attribs[32]; - int n = 0; - // AGL-style code remains commented out for comparison - if (!alistp) { - if (m & FL_INDEX) { - //list[n++] = AGL_BUFFER_SIZE; list[n++] = 8; - } else { - //list[n++] = AGL_RGBA; - //list[n++] = AGL_GREEN_SIZE; - //list[n++] = (m & FL_RGB8) ? 8 : 1; - attribs[n++] = NSOpenGLPFAColorSize; - attribs[n++] = (NSOpenGLPixelFormatAttribute)((m & FL_RGB8) ? 32 : 1); - if (m & FL_ALPHA) { - //list[n++] = AGL_ALPHA_SIZE; - attribs[n++] = NSOpenGLPFAAlphaSize; - attribs[n++] = (NSOpenGLPixelFormatAttribute)((m & FL_RGB8) ? 8 : 1); - } - if (m & FL_ACCUM) { - //list[n++] = AGL_ACCUM_GREEN_SIZE; list[n++] = 1; - attribs[n++] = NSOpenGLPFAAccumSize; - attribs[n++] = (NSOpenGLPixelFormatAttribute)1; - if (m & FL_ALPHA) { - //list[n++] = AGL_ACCUM_ALPHA_SIZE; list[n++] = 1; - } - } - } - if (m & FL_DOUBLE) { - //list[n++] = AGL_DOUBLEBUFFER; - attribs[n++] = NSOpenGLPFADoubleBuffer; - } - if (m & FL_DEPTH32) { - //list[n++] = AGL_DEPTH_SIZE; list[n++] = 32; - attribs[n++] = NSOpenGLPFADepthSize; - attribs[n++] = (NSOpenGLPixelFormatAttribute)32; - } else if (m & FL_DEPTH) { - //list[n++] = AGL_DEPTH_SIZE; list[n++] = 24; - attribs[n++] = NSOpenGLPFADepthSize; - attribs[n++] = (NSOpenGLPixelFormatAttribute)24; - } - if (m & FL_STENCIL) { - //list[n++] = AGL_STENCIL_SIZE; list[n++] = 1; - attribs[n++] = NSOpenGLPFAStencilSize; - attribs[n++] = (NSOpenGLPixelFormatAttribute)1; - } - if (m & FL_STEREO) { - //list[n++] = AGL_STEREO; - attribs[n++] = 6/*NSOpenGLPFAStereo*/; - } - if (m & FL_MULTISAMPLE) { - attribs[n++] = NSOpenGLPFAMultisample; // 10.4 - attribs[n++] = NSOpenGLPFASampleBuffers; attribs[n++] = (NSOpenGLPixelFormatAttribute)1; - attribs[n++] = NSOpenGLPFASamples; attribs[n++] = (NSOpenGLPixelFormatAttribute)4; - } - attribs[n++] = NSOpenGLPFAOpenGLProfile; - attribs[n++] = (m & FL_OPENGL3) ? NSOpenGLProfileVersion3_2Core : NSOpenGLProfileVersionLegacy; - } else { - while (alistp[n] && n < 30) { - attribs[n] = (NSOpenGLPixelFormatAttribute)alistp[n]; - n++; - } - } - attribs[n] = (NSOpenGLPixelFormatAttribute)0; - NSOpenGLPixelFormat *pixform = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs]; - /*GLint color,alpha,accum,depth; - [pixform getValues:&color forAttribute:NSOpenGLPFAColorSize forVirtualScreen:0]; - [pixform getValues:&alpha forAttribute:NSOpenGLPFAAlphaSize forVirtualScreen:0]; - [pixform getValues:&accum forAttribute:NSOpenGLPFAAccumSize forVirtualScreen:0]; - [pixform getValues:&depth forAttribute:NSOpenGLPFADepthSize forVirtualScreen:0]; - NSLog(@"color=%d alpha=%d accum=%d depth=%d",color,alpha,accum,depth);*/ - return pixform; -} - - -Fl_Gl_Choice *Fl_Cocoa_Gl_Window_Driver::find(int m, const int *alistp) -{ - Fl::screen_driver()->open_display(); // useful when called through gl_start() - Fl_Cocoa_Gl_Choice *g = (Fl_Cocoa_Gl_Choice*)Fl_Gl_Window_Driver::find_begin(m, alistp); - if (g) return g; - NSOpenGLPixelFormat* fmt = mode_to_NSOpenGLPixelFormat(m, alistp); - if (!fmt) return 0; - g = new Fl_Cocoa_Gl_Choice(m, alistp, first); - first = g; - g->pixelformat = fmt; - return g; -} - - -#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_12 -# define NSOpenGLContextParameterSurfaceOpacity NSOpenGLCPSurfaceOpacity -#endif - -static void remove_gl_context_opacity(NSOpenGLContext *ctx) { - GLint gl_opacity; - [ctx getValues:&gl_opacity forParameter:NSOpenGLContextParameterSurfaceOpacity]; - if (gl_opacity != 0) { - gl_opacity = 0; - [ctx setValues:&gl_opacity forParameter:NSOpenGLContextParameterSurfaceOpacity]; - } -} - - -static NSOpenGLContext *create_GLcontext_for_window( - NSOpenGLPixelFormat *pixelformat, - NSOpenGLContext *shared_ctx, Fl_Window *window) -{ - NSOpenGLContext *context = [[NSOpenGLContext alloc] initWithFormat:pixelformat shareContext:shared_ctx]; - if (shared_ctx && !context) context = [[NSOpenGLContext alloc] initWithFormat:pixelformat shareContext:nil]; - if (context) { - NSView *view = [fl_xid(window) contentView]; - [view setWantsBestResolutionOpenGLSurface:(Fl::use_high_res_GL() != 0)]; - [context setView:view]; - if (Fl_Cocoa_Window_Driver::driver(window)->subRect()) { - remove_gl_context_opacity(context); - } - } - return context; -} - -GLContext Fl_Cocoa_Gl_Window_Driver::create_gl_context(Fl_Window* window, const Fl_Gl_Choice* g) { - GLContext context, shared_ctx = 0; - if (context_list && nContext) shared_ctx = context_list[0]; - // resets the pile of string textures used to draw strings - // necessary before the first context is created - if (!shared_ctx) gl_texture_reset(); - context = create_GLcontext_for_window(((Fl_Cocoa_Gl_Choice*)g)->pixelformat, (NSOpenGLContext*)shared_ctx, window); - if (!context) return 0; - add_context(context); - [(NSOpenGLContext*)context makeCurrentContext]; - glClearColor(0., 0., 0., 1.); - apply_scissor(); - return (context); -} - -void Fl_Cocoa_Gl_Window_Driver::set_gl_context(Fl_Window* w, GLContext context) { - NSOpenGLContext *current_context = [NSOpenGLContext currentContext]; - if (context != current_context || w != cached_window) { - cached_window = w; - [(NSOpenGLContext*)context makeCurrentContext]; - } -} - -void Fl_Cocoa_Gl_Window_Driver::delete_gl_context(GLContext context) { - NSOpenGLContext *current_context = [NSOpenGLContext currentContext]; - if (current_context == context) { - cached_window = 0; - [current_context clearDrawable]; - } - [(NSOpenGLContext*)context release]; - del_context(context); - if (gl1ctxt) { - [[gl1ctxt view] release]; - [gl1ctxt release]; - gl1ctxt = 0; - } -} - -void Fl_Cocoa_Gl_Window_Driver::make_overlay_current() { - // this is not very useful, but unfortunately, Apple decided - // that front buffer drawing can no longer (OS X 10.4) be supported on their platforms. - if (pWindow->shown()) pWindow->make_current(); -} - -void Fl_Cocoa_Gl_Window_Driver::redraw_overlay() { - pWindow->redraw(); -} - -void Fl_Cocoa_Gl_Window_Driver::before_show(int& need_after) { - need_after = 1; -} - -void Fl_Cocoa_Gl_Window_Driver::after_show() { - // Makes sure the GL context is created to avoid drawing twice the window when first shown - pWindow->make_current(); - if ((mode() & FL_OPENGL3) && !gl1ctxt) { - // Create transparent GL1 scene above the GL3 scene to hold child widgets and/or text - NSView *view = [fl_mac_xid(pWindow) contentView]; - NSView *gl1view = [[NSView alloc] initWithFrame:[view frame]]; - [gl1view setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable]; - static NSOpenGLContext *shared_gl1_ctxt = nil; - static NSOpenGLPixelFormat *gl1pixelformat = mode_to_NSOpenGLPixelFormat( - FL_RGB8 | FL_ALPHA | FL_SINGLE, NULL); - gl1ctxt = [[NSOpenGLContext alloc] initWithFormat:gl1pixelformat shareContext:shared_gl1_ctxt]; - if (!shared_gl1_ctxt) { - shared_gl1_ctxt = gl1ctxt; - [shared_gl1_ctxt retain]; - } - [view addSubview:gl1view]; - if (Fl::use_high_res_GL()) { - [gl1view setWantsBestResolutionOpenGLSurface:YES]; - } - [gl1ctxt setView:gl1view]; - remove_gl_context_opacity(gl1ctxt); - } -} - -float Fl_Cocoa_Gl_Window_Driver::pixels_per_unit() -{ - int retina = (Fl::use_high_res_GL() && Fl_X::flx(pWindow) && - Fl_Cocoa_Window_Driver::driver(pWindow)->mapped_to_retina()) ? 2 : 1; - return retina * Fl_Graphics_Driver::default_driver().scale(); -} - -int Fl_Cocoa_Gl_Window_Driver::mode_(int m, const int *a) { - if (a) { // when the mode is set using the a array of system-dependent values, and if asking for double buffer, - // the FL_DOUBLE flag must be set in the mode_ member variable - const int *aa = a; - while (*aa) { - if (*(aa++) == - kCGLPFADoubleBuffer - ) { m |= FL_DOUBLE; break; } - } - } - pWindow->context(0); - mode( m); alist(a); - if (pWindow->shown()) { - g( find(m, a) ); - pWindow->redraw(); - } else { - g(0); - } - return 1; -} - -void Fl_Cocoa_Gl_Window_Driver::make_current_before() { - // detect if the window was moved between low and high resolution displays - Fl_Cocoa_Window_Driver *d = Fl_Cocoa_Window_Driver::driver(pWindow); - if (d->changed_resolution()){ - d->changed_resolution(false); - pWindow->invalidate(); - [(NSOpenGLContext*)pWindow->context() update]; - } -} - -void Fl_Cocoa_Gl_Window_Driver::swap_buffers() { - if (overlay() != NULL) { - // STR# 2944 [1] - // Save matrixmode/proj/modelview/rasterpos before doing overlay. - // - int wo = pWindow->pixel_w(), ho = pWindow->pixel_h(); - GLint matrixmode; - GLfloat pos[4]; - glGetIntegerv(GL_MATRIX_MODE, &matrixmode); - glGetFloatv(GL_CURRENT_RASTER_POSITION, pos); // save original glRasterPos - glMatrixMode(GL_PROJECTION); // save proj/model matrices - glPushMatrix(); - glLoadIdentity(); - glMatrixMode(GL_MODELVIEW); - glPushMatrix(); - glLoadIdentity(); - glScalef(2.0f/wo, 2.0f/ho, 1.0f); - glTranslatef(-wo/2.0f, -ho/2.0f, 0.0f); // set transform so 0,0 is bottom/left of Gl_Window - glRasterPos2i(0,0); // set glRasterPos to bottom left corner - { - // Emulate overlay by doing copypixels - glReadBuffer(GL_BACK); - glDrawBuffer(GL_FRONT); - glCopyPixels(0, 0, wo, ho, GL_COLOR); // copy GL_BACK to GL_FRONT - } - glPopMatrix(); // GL_MODELVIEW // restore model/proj matrices - glMatrixMode(GL_PROJECTION); - glPopMatrix(); - glMatrixMode(matrixmode); - glRasterPos3f(pos[0], pos[1], pos[2]); // restore original glRasterPos - } else { - [(NSOpenGLContext*)pWindow->context() flushBuffer]; - } -} - -char Fl_Cocoa_Gl_Window_Driver::swap_type() {return copy;} - -#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_12 -# define NSOpenGLContextParameterSwapInterval NSOpenGLCPSwapInterval -#endif - -void Fl_Cocoa_Gl_Window_Driver::swap_interval(int n) { - GLint interval = (GLint)n; - NSOpenGLContext* ctx = (NSOpenGLContext*)pWindow->context(); - if (ctx) - [ctx setValues:&interval forParameter:NSOpenGLContextParameterSwapInterval]; -} - -int Fl_Cocoa_Gl_Window_Driver::swap_interval() const { - GLint interval = (GLint)-1; - NSOpenGLContext* ctx = (NSOpenGLContext*)pWindow->context(); - if (ctx) - [ctx getValues:&interval forParameter:NSOpenGLContextParameterSwapInterval]; - return interval; -} - -void Fl_Cocoa_Gl_Window_Driver::resize(int is_a_resize, int w, int h) { - if (pWindow->shown()) apply_scissor(); - [(NSOpenGLContext*)pWindow->context() update]; - if (gl1ctxt) { - [gl1ctxt update]; - } -} - -void Fl_Cocoa_Gl_Window_Driver::apply_scissor() { - if (glIsEnabled(GL_SCISSOR_TEST)) glDisable(GL_SCISSOR_TEST); - CGRect *extents = Fl_Cocoa_Window_Driver::driver(pWindow)->subRect(); - if (extents) { - remove_gl_context_opacity((NSOpenGLContext*)pWindow->context()); - GLdouble vals[4]; - glGetDoublev(GL_COLOR_CLEAR_VALUE, vals); - glClearColor(0., 0., 0., 0.); - glClear(GL_COLOR_BUFFER_BIT); - glClearColor(vals[0], vals[1], vals[2], vals[3]); - float s = pWindow->pixels_per_unit(); - glScissor(s*extents->origin.x, s*extents->origin.y, s*extents->size.width, s*extents->size.height); -//printf("apply_scissor %dx%d %dx%d\n",extents->x, extents->y, extents->width, extents->height); - glEnable(GL_SCISSOR_TEST); - } -} - - -/* Some old Apple hardware doesn't implement the GL_EXT_texture_rectangle extension. - For it, draw_string_legacy_glut() is used to draw text. */ - -char *Fl_Cocoa_Gl_Window_Driver::alpha_mask_for_string(const char *str, int n, int w, int h, Fl_Fontsize fs) -{ - // write str to a bitmap just big enough - Fl_Image_Surface *surf = new Fl_Image_Surface(w, h); - Fl_Font f=fl_font(); - Fl_Surface_Device::push_current(surf); - fl_color(FL_WHITE); - fl_font(f, fs); - fl_draw(str, n, 0, fl_height() - fl_descent()); - // get the alpha channel only of the bitmap - char *alpha_buf = new char[w*h], *r = alpha_buf, *q; - q = (char*)CGBitmapContextGetData((CGContextRef)surf->offscreen()); - for (int i = 0; i < h; i++) { - for (int j = 0; j < w; j++) { - *r++ = *(q+3); - q += 4; - } - } - Fl_Surface_Device::pop_current(); - delete surf; - return alpha_buf; -} - -void Fl_Cocoa_Gl_Window_Driver::gl_start() { - [(NSOpenGLContext*)gl_start_context update]; -} - -// convert BGRA to RGB and also exchange top and bottom -static uchar *convert_BGRA_to_RGB(uchar *baseAddress, int w, int h, int mByteWidth) -{ - uchar *newimg = new uchar[3*w*h]; - uchar *to = newimg; - for (int i = h-1; i >= 0; i--) { - uchar *from = baseAddress + i * mByteWidth; - for (int j = 0; j < w; j++, from += 4) { -#if defined(__ppc__) && __ppc__ - memcpy(to, from + 1, 3); - to += 3; -#else - *(to++) = *(from+2); - *(to++) = *(from+1); - *(to++) = *from; -#endif - } - } - delete[] baseAddress; - return newimg; -} - - -static Fl_RGB_Image *cgimage_to_rgb4(CGImageRef img) { - int w = (int)CGImageGetWidth(img); - int h = (int)CGImageGetHeight(img); - CGColorSpaceRef cspace = CGColorSpaceCreateDeviceRGB(); - uchar *rgba = new uchar[4 * w * h]; - CGContextRef auxgc = CGBitmapContextCreate(rgba, w, h, 8, 4 * w, cspace, - kCGImageAlphaPremultipliedLast); - CGColorSpaceRelease(cspace); - CGContextDrawImage(auxgc, CGRectMake(0, 0, w, h), img); - CGContextRelease(auxgc); - Fl_RGB_Image *rgb = new Fl_RGB_Image(rgba, w, h, 4); - rgb->alloc_array = 1; - return rgb; -} - - -Fl_RGB_Image* Fl_Cocoa_Gl_Window_Driver::capture_gl_rectangle(int x, int y, int w, int h) -{ - Fl_Gl_Window* glw = pWindow; - float factor = glw->pixels_per_unit(); - if (factor != 1) { - w *= factor; h *= factor; x *= factor; y *= factor; - } - NSWindow *nswin = (NSWindow*)fl_mac_xid(pWindow); - CGImageRef img_full = Fl_Cocoa_Window_Driver::capture_decorated_window_10_5(nswin); - int bt = [nswin frame].size.height - [[nswin contentView] frame].size.height; - bt *= (factor / Fl_Graphics_Driver::default_driver().scale()); - CGRect cgr = CGRectMake(x, y + bt, w, h); // add vertical offset to bypass titlebar - CGImageRef cgimg = CGImageCreateWithImageInRect(img_full, cgr); // 10.4 - CGImageRelease(img_full); - Fl_RGB_Image *rgb = cgimage_to_rgb4(cgimg); - CGImageRelease(cgimg); - return rgb; - [(NSOpenGLContext*)glw->context() makeCurrentContext]; - // to capture also the overlay and for directGL demo - [(NSOpenGLContext*)glw->context() flushBuffer]; - // Read OpenGL context pixels directly. - // For extra safety, save & restore OpenGL states that are changed - glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT); - glPixelStorei(GL_PACK_ALIGNMENT, 4); /* Force 4-byte alignment */ - glPixelStorei(GL_PACK_ROW_LENGTH, 0); - glPixelStorei(GL_PACK_SKIP_ROWS, 0); - glPixelStorei(GL_PACK_SKIP_PIXELS, 0); - // Read a block of pixels from the frame buffer - int mByteWidth = w * 4; - mByteWidth = (mByteWidth + 3) & ~3; // Align to 4 bytes - uchar *baseAddress = new uchar[mByteWidth * h]; - glReadPixels(x, glw->pixel_h() - (y+h), w, h, - GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, baseAddress); - glPopClientAttrib(); - baseAddress = convert_BGRA_to_RGB(baseAddress, w, h, mByteWidth); - Fl_RGB_Image *img = new Fl_RGB_Image(baseAddress, w, h, 3, 3 * w); - img->alloc_array = 1; - [(NSOpenGLContext*)glw->context() flushBuffer]; - return img; -} - - -void* Fl_Cocoa_Gl_Window_Driver::GetProcAddress(const char *procName) { - return dlsym(RTLD_DEFAULT, procName); -} - - -FL_EXPORT NSOpenGLContext *fl_mac_glcontext(GLContext rc) { - return (NSOpenGLContext*)rc; -} - - -void Fl_Cocoa_Gl_Window_Driver::switch_to_GL1() { - [gl1ctxt makeCurrentContext]; - glClearColor(0., 0., 0., 0.); - glClear(GL_COLOR_BUFFER_BIT); -} - - -void Fl_Cocoa_Gl_Window_Driver::switch_back() { - glFlush(); - [(NSOpenGLContext*)pWindow->context() makeCurrentContext]; -} - - -class Fl_Gl_Cocoa_Plugin : public Fl_Cocoa_Plugin { -public: - Fl_Gl_Cocoa_Plugin() : Fl_Cocoa_Plugin(name()) { } - const char *name() FL_OVERRIDE { return "gl.cocoa.fltk.org"; } - void resize(Fl_Gl_Window *glw, int x, int y, int w, int h) FL_OVERRIDE { - glw->Fl_Gl_Window::resize(x, y, w, h); - } -}; - -static Fl_Gl_Cocoa_Plugin Gl_Cocoa_Plugin; - -#endif // HAVE_GL |