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Improved OpenGL profile selection in SDL backend
https://forum.zdoom.org/viewtopic.php?t=56852
This commit is contained in:
parent
d422392b94
commit
f353f8b5aa
2 changed files with 62 additions and 34 deletions
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@ -38,6 +38,7 @@
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#include "templates.h"
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#include "i_system.h"
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#include "i_video.h"
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#include "m_argv.h"
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#include "v_video.h"
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#include "v_pfx.h"
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#include "stats.h"
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@ -343,7 +344,7 @@ bool SDLGLVideo::SetResolution (int width, int height, int bits)
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//
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//==========================================================================
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bool SDLGLVideo::SetupPixelFormat(bool allowsoftware, int multisample)
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void SDLGLVideo::SetupPixelFormat(bool allowsoftware, int multisample, const int *glver)
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{
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SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 8 );
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SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 8 );
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@ -365,24 +366,18 @@ bool SDLGLVideo::SetupPixelFormat(bool allowsoftware, int multisample)
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
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}
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return true;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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bool SDLGLVideo::InitHardware (bool allowsoftware, int multisample)
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{
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if (!SetupPixelFormat(allowsoftware, multisample))
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else if (glver[0] > 2)
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{
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Printf ("R_OPENGL: Reverting to software mode...\n");
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return false;
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, glver[0]);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, glver[1]);
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}
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else
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{
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
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}
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return true;
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}
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@ -391,32 +386,66 @@ bool SDLGLVideo::InitHardware (bool allowsoftware, int multisample)
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SDLGLFB::SDLGLFB (void *, int width, int height, int, int, bool fullscreen, bool bgra)
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: SDLBaseFB (width, height, bgra)
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{
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// NOTE: Core profiles were added with GL 3.2, so there's no sense trying
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// to set core 3.1 or 3.0. We could try a forward-compatible context
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// instead, but that would be too restrictive (w.r.t. shaders).
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static const int glvers[][2] = {
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{ 4, 5 }, { 4, 4 }, { 4, 3 }, { 4, 2 }, { 4, 1 }, { 4, 0 },
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{ 3, 3 }, { 3, 2 }, { 2, 0 },
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{ 0, 0 },
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};
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int glveridx = 0;
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int i;
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m_Lock=0;
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UpdatePending = false;
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if (!static_cast<SDLGLVideo*>(Video)->InitHardware(false, 0))
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const char *version = Args->CheckValue("-glversion");
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if (version != NULL)
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{
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vid_renderer = 0;
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return;
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double gl_version = strtod(version, NULL) + 0.01;
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int vermaj = (int)gl_version;
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int vermin = (int)(gl_version*10.0) % 10;
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while (glvers[glveridx][0] > vermaj || (glvers[glveridx][0] == vermaj &&
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glvers[glveridx][1] > vermin))
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{
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glveridx++;
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if (glvers[glveridx][0] == 0)
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{
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glveridx = 0;
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break;
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}
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}
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}
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FString caption;
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caption.Format(GAMESIG " %s (%s)", GetVersionString(), GetGitTime());
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for ( ; glvers[glveridx][0] > 0; ++glveridx)
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{
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static_cast<SDLGLVideo*>(Video)->SetupPixelFormat(false, 0, glvers[glveridx]);
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Screen = SDL_CreateWindow (caption,
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SDL_WINDOWPOS_UNDEFINED_DISPLAY(vid_adapter), SDL_WINDOWPOS_UNDEFINED_DISPLAY(vid_adapter),
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width, height, (fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0)|SDL_WINDOW_OPENGL);
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if (Screen == NULL)
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return;
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SDL_WINDOWPOS_UNDEFINED_DISPLAY(vid_adapter),
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SDL_WINDOWPOS_UNDEFINED_DISPLAY(vid_adapter),
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width, height, (fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0)|SDL_WINDOW_OPENGL
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);
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if (Screen != NULL)
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{
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GLContext = SDL_GL_CreateContext(Screen);
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if (GLContext == NULL)
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if (GLContext != NULL)
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{
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m_supportsGamma = -1 != SDL_GetWindowGammaRamp(Screen,
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m_origGamma[0], m_origGamma[1], m_origGamma[2]
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);
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return;
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}
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m_supportsGamma = -1 != SDL_GetWindowGammaRamp(Screen, m_origGamma[0], m_origGamma[1], m_origGamma[2]);
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SDL_DestroyWindow(Screen);
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Screen = NULL;
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}
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}
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}
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SDLGLFB::~SDLGLFB ()
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@ -27,8 +27,7 @@ class SDLGLVideo : public IVideo
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bool NextMode (int *width, int *height, bool *letterbox);
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bool SetResolution (int width, int height, int bits);
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bool SetupPixelFormat(bool allowsoftware, int multisample);
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bool InitHardware (bool allowsoftware, int multisample);
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void SetupPixelFormat(bool allowsoftware, int multisample, const int *glver);
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private:
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int IteratorMode;
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