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Added explicit support for sRGB framebuffers.

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This commit is contained in:
Camilla Berglund 2012-12-02 16:10:00 +01:00
parent a3ff29af36
commit 69a900592e
9 changed files with 44 additions and 0 deletions
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7
include/GL/glfw3.h
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@ -518,6 +518,10 @@ extern "C" {
/*! @brief The number of samples used for default framebuffer multisampling.
*/
#define GLFW_FSAA_SAMPLES 0x0002100E
/*! @brief @c GL_TRUE if the framebuffer should be sRGB capable, or @c GL_FALSE
* otherwise.
*/
#define GLFW_SRGB_CAPABLE 0x0002100F
/*! @brief The @link clients client API @endlink to create a context for.
*/
@ -1020,6 +1024,9 @@ GLFWAPI void glfwDefaultWindowHints(void);
* The @ref GLFW_FSAA_SAMPLES hint specifies the desired number of samples to
* use for multisampling.
*
* The @ref GLFW_SRGB_CAPABLE hint specifies whether the framebuffer should be
* sRGB capable.
*
* The @ref GLFW_CLIENT_API hint specifies which client API to create the
* context for. Possible values are @ref GLFW_OPENGL_API and @ref
* GLFW_OPENGL_ES_API.

3
src/cocoa_window.m
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@ -835,6 +835,9 @@ static GLboolean createContext(_GLFWwindow* window,
ADD_ATTR2(NSOpenGLPFASamples, fbconfig->samples);
}
// NOTE: All NSOpenGLPixelFormats on the relevant cards support sRGB
// frambuffer, so there's no need (and no way) to request it
ADD_ATTR(0);
#undef ADD_ATTR

2
src/internal.h
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@ -100,6 +100,7 @@ struct _GLFWhints
GLboolean resizable;
GLboolean visible;
int samples;
GLboolean sRGB;
int clientAPI;
int glMajor;
int glMinor;
@ -160,6 +161,7 @@ struct _GLFWfbconfig
int auxBuffers;
GLboolean stereo;
int samples;
GLboolean sRGB;
GLFWintptr platformID;
};

6
src/opengl.c
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@ -217,6 +217,12 @@ const _GLFWfbconfig* _glfwChooseFBConfig(const _GLFWfbconfig* desired,
extraDiff += (desired->samples - current->samples) *
(desired->samples - current->samples);
}
if (desired->sRGB)
{
if (!current->sRGB)
extraDiff++;
}
}
// Figure out if the current one is better than the best one found so far

12
src/win32_opengl.c
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@ -72,6 +72,7 @@ static void initWGLExtensions(_GLFWwindow* window)
// This needs to include every extension used below except for
// WGL_ARB_extensions_string and WGL_EXT_extensions_string
window->WGL.ARB_multisample = GL_FALSE;
window->WGL.ARB_framebuffer_sRGB = GL_FALSE;
window->WGL.ARB_create_context = GL_FALSE;
window->WGL.ARB_create_context_profile = GL_FALSE;
window->WGL.EXT_create_context_es2_profile = GL_FALSE;
@ -92,6 +93,9 @@ static void initWGLExtensions(_GLFWwindow* window)
if (_glfwPlatformExtensionSupported("WGL_ARB_multisample"))
window->WGL.ARB_multisample = GL_TRUE;
if (_glfwPlatformExtensionSupported("WGL_ARB_framebuffer_sRGB"))
window->WGL.ARB_framebuffer_sRGB = GL_TRUE;
if (_glfwPlatformExtensionSupported("WGL_ARB_create_context"))
{
window->WGL.CreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)
@ -246,6 +250,11 @@ static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
f->samples = getPixelFormatAttrib(window, i, WGL_SAMPLES_ARB);
else
f->samples = 0;
if (window->WGL.ARB_framebuffer_sRGB)
f->sRGB = getPixelFormatAttrib(window, i, WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB);
else
f->sRGB = GL_FALSE;
}
else
{
@ -293,6 +302,9 @@ static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
// PFD pixel formats do not support FSAA
f->samples = 0;
// PFD pixel formats do not support sRGB
f->sRGB = GL_FALSE;
}
f->platformID = i;

1
src/win32_platform.h
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@ -144,6 +144,7 @@ typedef struct _GLFWcontextWGL
GLboolean EXT_swap_control;
GLboolean ARB_multisample;
GLboolean ARB_pixel_format;
GLboolean ARB_framebuffer_sRGB;
GLboolean ARB_create_context;
GLboolean ARB_create_context_profile;
GLboolean EXT_create_context_es2_profile;

4
src/window.c
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@ -237,6 +237,7 @@ GLFWAPI GLFWwindow glfwCreateWindow(int width, int height,
fbconfig.auxBuffers = Max(_glfwLibrary.hints.auxBuffers, 0);
fbconfig.stereo = _glfwLibrary.hints.stereo ? GL_TRUE : GL_FALSE;
fbconfig.samples = Max(_glfwLibrary.hints.samples, 0);
fbconfig.sRGB = _glfwLibrary.hints.sRGB ? GL_TRUE : GL_FALSE;
// Set up desired window config
wndconfig.mode = mode;
@ -446,6 +447,9 @@ GLFWAPI void glfwWindowHint(int target, int hint)
case GLFW_FSAA_SAMPLES:
_glfwLibrary.hints.samples = hint;
break;
case GLFW_SRGB_CAPABLE:
_glfwLibrary.hints.sRGB = hint;
break;
case GLFW_CLIENT_API:
_glfwLibrary.hints.clientAPI = hint;
break;

8
src/x11_opengl.c
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@ -190,6 +190,11 @@ static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
else
f->samples = 0;
if (_glfwLibrary.GLX.ARB_framebuffer_sRGB)
f->sRGB = getFBConfigAttrib(window, fbconfigs[i], GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB);
else
f->sRGB = GL_FALSE;
f->platformID = (GLFWintptr) getFBConfigAttrib(window, fbconfigs[i], GLX_FBCONFIG_ID);
(*found)++;
@ -527,6 +532,9 @@ int _glfwInitOpenGL(void)
if (_glfwPlatformExtensionSupported("GLX_ARB_multisample"))
_glfwLibrary.GLX.ARB_multisample = GL_TRUE;
if (_glfwPlatformExtensionSupported("GLX_ARB_framebuffer_sRGB"))
_glfwLibrary.GLX.ARB_framebuffer_sRGB = GL_TRUE;
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context"))
{
_glfwLibrary.GLX.CreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC)

1
src/x11_platform.h
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@ -272,6 +272,7 @@ typedef struct _GLFWlibraryGLX
GLboolean EXT_swap_control;
GLboolean MESA_swap_control;
GLboolean ARB_multisample;
GLboolean ARB_framebuffer_sRGB;
GLboolean ARB_create_context;
GLboolean ARB_create_context_profile;
GLboolean ARB_create_context_robustness;