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[client] opengl: added preventBuffer option

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This commit is contained in:
Geoffrey McRae 2017-12-19 11:02:35 +11:00
parent f4b95eeda9
commit 133d8ec21f
2 changed files with 64 additions and 20 deletions
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42
client/renderers/opengl-basic.c
View File

@ -45,14 +45,16 @@ struct Options
{
bool mipmap;
bool vsync;
bool preventBuffer;
bool splitMouse;
};
static struct Options defaultOptions =
{
.mipmap = true,
.vsync = true,
.splitMouse = false
.mipmap = true,
.vsync = true,
.preventBuffer = true,
.splitMouse = false
};
struct LGR_OpenGLBasic
@ -700,14 +702,19 @@ bool lgr_opengl_basic_render(void * opaque)
if (this->fpsTexture)
glCallList(this->fpsList);
unsigned int before, after;
glXGetVideoSyncSGI(&before);
SDL_GL_SwapWindow(this->sdlWindow);
if (this->opt.preventBuffer)
{
unsigned int before, after;
glXGetVideoSyncSGI(&before);
SDL_GL_SwapWindow(this->sdlWindow);
// wait for the swap to happen to ensure we dont buffer frames
glXGetVideoSyncSGI(&after);
if (before == after)
glXWaitVideoSyncSGI(1, 0, &before);
// wait for the swap to happen to ensure we dont buffer frames
glXGetVideoSyncSGI(&after);
if (before == after)
glXWaitVideoSyncSGI(1, 0, &before);
}
else
SDL_GL_SwapWindow(this->sdlWindow);
++this->frameCount;
const uint64_t t = nanotime();
@ -738,6 +745,15 @@ static void handle_opt_vsync(void * opaque, const char *value)
this->opt.vsync = LG_RendererValueToBool(value);
}
static void handle_opt_prevent_buffer(void * opaque, const char *value)
{
struct LGR_OpenGLBasic * this = (struct LGR_OpenGLBasic *)opaque;
if (!this)
return;
this->opt.preventBuffer = LG_RendererValueToBool(value);
}
static void handle_opt_split_mouse(void * opaque, const char *value)
{
struct LGR_OpenGLBasic * this = (struct LGR_OpenGLBasic *)opaque;
@ -761,6 +777,12 @@ static LG_RendererOpt lgr_opengl_basic_options[] =
.validator = LG_RendererValidatorBool,
.handler = handle_opt_vsync
},
{
.name = "preventBuffer",
.desc = "Prevent the driver from buffering frames [default: enabled]",
.validator = LG_RendererValidatorBool,
.handler = handle_opt_prevent_buffer
},
{
.name = "splitMouse",
.desc = "Draw mouse updates directly to the front buffer [default: disabled]",

42
client/renderers/opengl.c
View File

@ -47,14 +47,16 @@ struct Options
{
bool mipmap;
bool vsync;
bool preventBuffer;
bool splitMouse;
};
static struct Options defaultOptions =
{
.mipmap = true,
.vsync = true,
.splitMouse = false
.mipmap = true,
.vsync = true,
.preventBuffer = true,
.splitMouse = false
};
struct LGR_OpenGL
@ -764,14 +766,19 @@ bool lgr_opengl_render(void * opaque)
if (this->fpsTexture)
glCallList(this->fpsList);
unsigned int before, after;
glXGetVideoSyncSGI(&before);
SDL_GL_SwapWindow(this->sdlWindow);
if (this->opt.preventBuffer)
{
unsigned int before, after;
glXGetVideoSyncSGI(&before);
SDL_GL_SwapWindow(this->sdlWindow);
// wait for the swap to happen to ensure we dont buffer frames
glXGetVideoSyncSGI(&after);
if (before == after)
glXWaitVideoSyncSGI(1, 0, &before);
// wait for the swap to happen to ensure we dont buffer frames //
glXGetVideoSyncSGI(&after);
if (before == after)
glXWaitVideoSyncSGI(1, 0, &before);
}
else
SDL_GL_SwapWindow(this->sdlWindow);
++this->frameCount;
const uint64_t t = nanotime();
@ -802,6 +809,15 @@ static void handle_opt_vsync(void * opaque, const char *value)
this->opt.vsync = LG_RendererValueToBool(value);
}
static void handle_opt_prevent_buffer(void * opaque, const char *value)
{
struct LGR_OpenGL * this = (struct LGR_OpenGL *)opaque;
if (!this)
return;
this->opt.preventBuffer = LG_RendererValueToBool(value);
}
static void handle_opt_split_mouse(void * opaque, const char *value)
{
struct LGR_OpenGL * this = (struct LGR_OpenGL *)opaque;
@ -825,6 +841,12 @@ static LG_RendererOpt lgr_opengl_options[] =
.validator = LG_RendererValidatorBool,
.handler = handle_opt_vsync
},
{
.name = "preventBuffer",
.desc = "Prevent the driver from buffering frames [default: enabled]",
.validator = LG_RendererValidatorBool,
.handler = handle_opt_prevent_buffer
},
{
.name = "splitMouse",
.desc = "Draw mouse updates directly to the front buffer [default: disabled]",