mirrors
/
OpenTTD
mirror of https://github.com/OpenTTD/OpenTTD.git
2
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fix: [OpenGL] Check maximum supported texture size against screen resolution.

This commit is contained in:
Michael Lutz 2021-04-21 22:06:04 +02:00
parent 5ff15443e9
commit e53313391a
5 changed files with 15 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/video/cocoa/cocoa_ogl.mm
View File

@ -254,7 +254,7 @@ const char *VideoDriver_CocoaOpenGL::AllocateContext(bool allow_software)
CGLSetCurrentContext(this->gl_context);
return OpenGLBackend::Create(&GetOGLProcAddressCallback);
return OpenGLBackend::Create(&GetOGLProcAddressCallback, this->GetScreenSize());
}
NSView *VideoDriver_CocoaOpenGL::AllocateDrawView()

13
src/video/opengl.cpp
View File

@ -464,16 +464,17 @@ void SetupDebugOutput()
/**
* Create and initialize the singleton back-end class.
* @param get_proc Callback to get an OpenGL function from the OS driver.
* @param screen_res Current display resolution.
* @return nullptr on success, error message otherwise.
*/
/* static */ const char *OpenGLBackend::Create(GetOGLProcAddressProc get_proc)
/* static */ const char *OpenGLBackend::Create(GetOGLProcAddressProc get_proc, const Dimension &screen_res)
{
if (OpenGLBackend::instance != nullptr) OpenGLBackend::Destroy();
GetOGLProcAddress = get_proc;
OpenGLBackend::instance = new OpenGLBackend();
return OpenGLBackend::instance->Init();
return OpenGLBackend::instance->Init(screen_res);
}
/**
@ -521,9 +522,10 @@ OpenGLBackend::~OpenGLBackend()
/**
* Check for the needed OpenGL functionality and allocate all resources.
* @param screen_res Current display resolution.
* @return Error string or nullptr if successful.
*/
const char *OpenGLBackend::Init()
const char *OpenGLBackend::Init(const Dimension &screen_res)
{
if (!BindBasicInfoProcs()) return "OpenGL not supported";
@ -581,6 +583,11 @@ const char *OpenGLBackend::Init()
}
if (this->persistent_mapping_supported) DEBUG(driver, 3, "OpenGL: Using persistent buffer mapping");
/* Check maximum texture size against screen resolution. */
GLint max_tex_size = 0;
_glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_tex_size);
if (std::max(screen_res.width, screen_res.height) > (uint)max_tex_size) return "Max supported texture size is too small";
/* Check available texture units. */
GLint max_tex_units = 0;
_glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_tex_units);

4
src/video/opengl.h
View File

@ -74,7 +74,7 @@ private:
OpenGLBackend();
~OpenGLBackend();
const char *Init();
const char *Init(const Dimension &screen_res);
bool InitShaders();
void InternalClearCursorCache();
@ -87,7 +87,7 @@ public:
{
return OpenGLBackend::instance;
}
static const char *Create(GetOGLProcAddressProc get_proc);
static const char *Create(GetOGLProcAddressProc get_proc, const Dimension &screen_res);
static void Destroy();
void PrepareContext();

2
src/video/sdl2_opengl_v.cpp
View File

@ -117,7 +117,7 @@ const char *VideoDriver_SDL_OpenGL::AllocateContext()
ToggleVsync(_video_vsync);
return OpenGLBackend::Create(&GetOGLProcAddressCallback);
return OpenGLBackend::Create(&GetOGLProcAddressCallback, this->GetScreenSize());
}
void VideoDriver_SDL_OpenGL::PopulateSystemSprites()

2
src/video/win32_v.cpp
View File

@ -1380,7 +1380,7 @@ const char *VideoDriver_Win32OpenGL::AllocateContext()
this->ToggleVsync(_video_vsync);
this->gl_rc = rc;
return OpenGLBackend::Create(&GetOGLProcAddressCallback);
return OpenGLBackend::Create(&GetOGLProcAddressCallback, this->GetScreenSize());
}
bool VideoDriver_Win32OpenGL::ToggleFullscreen(bool full_screen)