299 lines
6.9 KiB
Objective-C
299 lines
6.9 KiB
Objective-C
/******************************************************************************
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Copyright (C) 2013 by Ruwen Hahn <palana@stunned.de>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include "gl-subsystem.h"
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#include <OpenGL/OpenGL.h>
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#import <Cocoa/Cocoa.h>
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#import <AppKit/AppKit.h>
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//#include "util/darray.h"
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struct gl_windowinfo {
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NSView *view;
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};
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struct gl_platform {
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NSOpenGLContext *context;
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};
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static NSOpenGLContext *gl_context_create(void)
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{
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unsigned attrib_count = 0;
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#define ADD_ATTR(x) \
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{ attributes[attrib_count++] = (NSOpenGLPixelFormatAttribute)x; }
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#define ADD_ATTR2(x, y) { ADD_ATTR(x); ADD_ATTR(y); }
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NSOpenGLPixelFormatAttribute attributes[40];
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ADD_ATTR(NSOpenGLPFADoubleBuffer);
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ADD_ATTR2(NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core);
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ADD_ATTR(0);
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#undef ADD_ATTR2
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#undef ADD_ATTR
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NSOpenGLPixelFormat *pf;
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pf = [[NSOpenGLPixelFormat alloc] initWithAttributes:attributes];
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if(!pf) {
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blog(LOG_ERROR, "Failed to create pixel format");
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return NULL;
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}
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NSOpenGLContext *context;
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context = [[NSOpenGLContext alloc] initWithFormat:pf shareContext:nil];
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[pf release];
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if(!context) {
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blog(LOG_ERROR, "Failed to create context");
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return NULL;
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}
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[context clearDrawable];
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return context;
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}
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struct gl_platform *gl_platform_create(gs_device_t *device, uint32_t adapter)
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{
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struct gl_platform *plat = bzalloc(sizeof(struct gl_platform));
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plat->context = gl_context_create();
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if (!plat->context)
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goto fail;
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[plat->context makeCurrentContext];
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if (!gladLoadGL())
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goto fail;
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return plat;
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fail:
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blog(LOG_ERROR, "gl_platform_create failed");
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gl_platform_destroy(plat);
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UNUSED_PARAMETER(device);
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UNUSED_PARAMETER(adapter);
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return NULL;
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}
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void gl_platform_destroy(struct gl_platform *platform)
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{
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if(!platform)
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return;
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[platform->context release];
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platform->context = nil;
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bfree(platform);
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}
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bool gl_platform_init_swapchain(struct gs_swap_chain *swap)
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{
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UNUSED_PARAMETER(swap);
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return true;
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}
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void gl_platform_cleanup_swapchain(struct gs_swap_chain *swap)
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{
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UNUSED_PARAMETER(swap);
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}
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struct gl_windowinfo *gl_windowinfo_create(const struct gs_init_data *info)
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{
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if(!info)
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return NULL;
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if(!info->window.view)
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return NULL;
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struct gl_windowinfo *wi = bzalloc(sizeof(struct gl_windowinfo));
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wi->view = info->window.view;
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[info->window.view setWantsBestResolutionOpenGLSurface:YES];
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return wi;
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}
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void gl_windowinfo_destroy(struct gl_windowinfo *wi)
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{
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if(!wi)
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return;
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wi->view = nil;
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bfree(wi);
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}
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void gl_update(gs_device_t *device)
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{
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[device->plat->context update];
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}
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void device_enter_context(gs_device_t *device)
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{
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[device->plat->context makeCurrentContext];
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}
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void device_leave_context(gs_device_t *device)
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{
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UNUSED_PARAMETER(device);
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[NSOpenGLContext clearCurrentContext];
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}
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void device_load_swapchain(gs_device_t *device, gs_swapchain_t *swap)
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{
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if(device->cur_swap == swap)
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return;
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device->cur_swap = swap;
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if (swap) {
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[device->plat->context setView:swap->wi->view];
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} else {
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[device->plat->context clearDrawable];
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}
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}
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void device_present(gs_device_t *device)
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{
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[device->plat->context flushBuffer];
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}
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void gl_getclientsize(const struct gs_swap_chain *swap, uint32_t *width,
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uint32_t *height)
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{
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if(width) *width = swap->info.cx;
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if(height) *height = swap->info.cy;
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}
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gs_texture_t *device_texture_create_from_iosurface(gs_device_t *device,
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void *iosurf)
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{
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IOSurfaceRef ref = (IOSurfaceRef)iosurf;
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struct gs_texture_2d *tex = bzalloc(sizeof(struct gs_texture_2d));
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OSType pf = IOSurfaceGetPixelFormat(ref);
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if (pf != 'BGRA')
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blog(LOG_ERROR, "Unexpected pixel format: %d (%c%c%c%c)", pf,
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pf >> 24, pf >> 16, pf >> 8, pf);
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const enum gs_color_format color_format = GS_BGRA;
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tex->base.device = device;
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tex->base.type = GS_TEXTURE_2D;
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tex->base.format = GS_BGRA;
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tex->base.levels = 1;
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tex->base.gl_format = convert_gs_format(color_format);
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tex->base.gl_internal_format = convert_gs_internal_format(color_format);
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tex->base.gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
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tex->base.gl_target = GL_TEXTURE_RECTANGLE;
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tex->base.is_dynamic = false;
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tex->base.is_render_target = false;
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tex->base.gen_mipmaps = false;
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tex->width = IOSurfaceGetWidth(ref);
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tex->height = IOSurfaceGetHeight(ref);
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if (!gl_gen_textures(1, &tex->base.texture))
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goto fail;
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if (!gl_bind_texture(tex->base.gl_target, tex->base.texture))
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goto fail;
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CGLError err = CGLTexImageIOSurface2D(
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[[NSOpenGLContext currentContext] CGLContextObj],
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tex->base.gl_target,
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tex->base.gl_internal_format,
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tex->width, tex->height,
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tex->base.gl_format,
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tex->base.gl_type,
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ref, 0);
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if(err != kCGLNoError) {
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blog(LOG_ERROR, "CGLTexImageIOSurface2D: %u, %s"
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" (device_texture_create_from_iosurface)",
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err, CGLErrorString(err));
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gl_success("CGLTexImageIOSurface2D");
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goto fail;
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}
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if (!gl_tex_param_i(tex->base.gl_target,
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GL_TEXTURE_MAX_LEVEL, 0))
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goto fail;
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if (!gl_bind_texture(tex->base.gl_target, 0))
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goto fail;
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return (gs_texture_t*)tex;
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fail:
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gs_texture_destroy((gs_texture_t*)tex);
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blog(LOG_ERROR, "device_texture_create_from_iosurface (GL) failed");
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return NULL;
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}
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bool gs_texture_rebind_iosurface(gs_texture_t *texture, void *iosurf)
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{
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if (!texture)
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return false;
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if (!iosurf)
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return false;
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struct gs_texture_2d *tex = (struct gs_texture_2d*)texture;
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IOSurfaceRef ref = (IOSurfaceRef)iosurf;
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OSType pf = IOSurfaceGetPixelFormat(ref);
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if (pf != 'BGRA')
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blog(LOG_ERROR, "Unexpected pixel format: %d (%c%c%c%c)", pf,
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pf >> 24, pf >> 16, pf >> 8, pf);
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if (tex->width != IOSurfaceGetWidth(ref) ||
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tex->height != IOSurfaceGetHeight(ref))
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return false;
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if (!gl_bind_texture(tex->base.gl_target, tex->base.texture))
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return false;
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CGLError err = CGLTexImageIOSurface2D(
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[[NSOpenGLContext currentContext] CGLContextObj],
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tex->base.gl_target,
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tex->base.gl_internal_format,
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tex->width, tex->height,
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tex->base.gl_format,
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tex->base.gl_type,
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ref, 0);
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if(err != kCGLNoError) {
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blog(LOG_ERROR, "CGLTexImageIOSurface2D: %u, %s"
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" (gs_texture_rebind_iosurface)",
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err, CGLErrorString(err));
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gl_success("CGLTexImageIOSurface2D");
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return false;
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}
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if (!gl_bind_texture(tex->base.gl_target, 0))
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return false;
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return true;
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}
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