1
0
Fork 0
mirror of https://github.com/Atmosphere-NX/Atmosphere.git synced 2024-12-24 03:06:17 +00:00
Atmosphere/troposphere/daybreak/nanovg/include/nanovg/nanovg_gl_utils.h
Adubbz 94eb2195d3
Added Daybreak, a system updater homebrew (#1073)
* Implemented a system updater homebrew (titled Daybreak)

* git subrepo pull ./troposphere/daybreak/nanovg

subrepo:
  subdir:   "troposphere/daybreak/nanovg"
  merged:   "c197ba2f"
upstream:
  origin:   "https://github.com/Adubbz/nanovg-deko.git"
  branch:   "master"
  commit:   "c197ba2f"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???" (+1 squashed commits)

Squashed commits:

[232dc943] git subrepo clone https://github.com/Adubbz/nanovg-deko.git troposphere/daybreak/nanovg

subrepo:
  subdir:   "troposphere/daybreak/nanovg"
  merged:   "52bb784b"
upstream:
  origin:   "https://github.com/Adubbz/nanovg-deko.git"
  branch:   "master"
  commit:   "52bb784b"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

* daybreak: switch to using hiddbg for home blocking (+1 squashed commits)

Squashed commits:

[4bfc7b0d] daybreak: block the home button during installation
2020-07-07 17:07:00 -07:00

158 lines
4.9 KiB
C

//
// Copyright (c) 2009-2013 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//
#ifndef NANOVG_GL_UTILS_H
#define NANOVG_GL_UTILS_H
#ifdef USE_OPENGL
struct NVGLUframebuffer {
NVGcontext* ctx;
GLuint fbo;
GLuint rbo;
GLuint texture;
int image;
};
typedef struct NVGLUframebuffer NVGLUframebuffer;
// Helper function to create GL frame buffer to render to.
void nvgluBindFramebuffer(NVGLUframebuffer* fb);
NVGLUframebuffer* nvgluCreateFramebuffer(NVGcontext* ctx, int w, int h, int imageFlags);
void nvgluDeleteFramebuffer(NVGLUframebuffer* fb);
#endif // NANOVG_GL_UTILS_H
#ifdef NANOVG_GL_IMPLEMENTATION
#if defined(NANOVG_GL3) || defined(NANOVG_GLES2) || defined(NANOVG_GLES3)
// FBO is core in OpenGL 3>.
# define NANOVG_FBO_VALID 1
#elif defined(NANOVG_GL2)
// On OS X including glext defines FBO on GL2 too.
# ifdef __APPLE__
# include <OpenGL/glext.h>
# define NANOVG_FBO_VALID 1
# endif
#endif
static GLint defaultFBO = -1;
NVGLUframebuffer* nvgluCreateFramebuffer(NVGcontext* ctx, int w, int h, int imageFlags)
{
#ifdef NANOVG_FBO_VALID
GLint defaultFBO;
GLint defaultRBO;
NVGLUframebuffer* fb = NULL;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &defaultFBO);
glGetIntegerv(GL_RENDERBUFFER_BINDING, &defaultRBO);
fb = (NVGLUframebuffer*)malloc(sizeof(NVGLUframebuffer));
if (fb == NULL) goto error;
memset(fb, 0, sizeof(NVGLUframebuffer));
fb->image = nvgCreateImageRGBA(ctx, w, h, imageFlags | NVG_IMAGE_FLIPY | NVG_IMAGE_PREMULTIPLIED, NULL);
#if defined NANOVG_GL2
fb->texture = nvglImageHandleGL2(ctx, fb->image);
#elif defined NANOVG_GL3
fb->texture = nvglImageHandleGL3(ctx, fb->image);
#elif defined NANOVG_GLES2
fb->texture = nvglImageHandleGLES2(ctx, fb->image);
#elif defined NANOVG_GLES3
fb->texture = nvglImageHandleGLES3(ctx, fb->image);
#endif
fb->ctx = ctx;
// frame buffer object
glGenFramebuffers(1, &fb->fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fb->fbo);
// render buffer object
glGenRenderbuffers(1, &fb->rbo);
glBindRenderbuffer(GL_RENDERBUFFER, fb->rbo);
glRenderbufferStorage(GL_RENDERBUFFER, GL_STENCIL_INDEX8, w, h);
// combine all
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb->texture, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fb->rbo);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
#ifdef GL_DEPTH24_STENCIL8
// If GL_STENCIL_INDEX8 is not supported, try GL_DEPTH24_STENCIL8 as a fallback.
// Some graphics cards require a depth buffer along with a stencil.
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, w, h);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb->texture, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fb->rbo);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
#endif // GL_DEPTH24_STENCIL8
goto error;
}
glBindFramebuffer(GL_FRAMEBUFFER, defaultFBO);
glBindRenderbuffer(GL_RENDERBUFFER, defaultRBO);
return fb;
error:
glBindFramebuffer(GL_FRAMEBUFFER, defaultFBO);
glBindRenderbuffer(GL_RENDERBUFFER, defaultRBO);
nvgluDeleteFramebuffer(fb);
return NULL;
#else
NVG_NOTUSED(ctx);
NVG_NOTUSED(w);
NVG_NOTUSED(h);
NVG_NOTUSED(imageFlags);
return NULL;
#endif
}
void nvgluBindFramebuffer(NVGLUframebuffer* fb)
{
#ifdef NANOVG_FBO_VALID
if (defaultFBO == -1) glGetIntegerv(GL_FRAMEBUFFER_BINDING, &defaultFBO);
glBindFramebuffer(GL_FRAMEBUFFER, fb != NULL ? fb->fbo : defaultFBO);
#else
NVG_NOTUSED(fb);
#endif
}
void nvgluDeleteFramebuffer(NVGLUframebuffer* fb)
{
#ifdef NANOVG_FBO_VALID
if (fb == NULL) return;
if (fb->fbo != 0)
glDeleteFramebuffers(1, &fb->fbo);
if (fb->rbo != 0)
glDeleteRenderbuffers(1, &fb->rbo);
if (fb->image >= 0)
nvgDeleteImage(fb->ctx, fb->image);
fb->ctx = NULL;
fb->fbo = 0;
fb->rbo = 0;
fb->texture = 0;
fb->image = -1;
free(fb);
#else
NVG_NOTUSED(fb);
#endif
}
#endif
#endif // NANOVG_GL_IMPLEMENTATION