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egl: Add a function to convert __GLcontextModes to _EGLConfig.

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_eglConfigFromContextModesRec is used to convert a __GLcontextModes to a
_EGLConfig.  Note that the config is not validated.  An invalid mode
is likely to give an invalid config.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
This commit is contained in:
Chia-I Wu
2009-09-27 16:14:36 +08:00
committed by Brian Paul
parent 56822b0812
commit 55893b9439
2 changed files with 77 additions and 0 deletions
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src/egl/main/eglconfigutil.c
+72
View File
@@ -52,6 +52,78 @@ _eglConfigToContextModesRec(const _EGLConfig *config, __GLcontextModes *mode)
}
/**
* Convert a __GLcontextModes object to an _EGLConfig.
*/
EGLBoolean
_eglConfigFromContextModesRec(_EGLConfig *conf, const __GLcontextModes *m,
EGLint conformant, EGLint renderable_type)
{
EGLint config_caveat, surface_type;
/* must be RGBA */
if (!m->rgbMode || !(m->renderType & GLX_RGBA_BIT))
return EGL_FALSE;
config_caveat = EGL_NONE;
if (m->visualRating == GLX_SLOW_CONFIG)
config_caveat = EGL_SLOW_CONFIG;
if (m->visualRating == GLX_NON_CONFORMANT_CONFIG)
conformant &= ~EGL_OPENGL_BIT;
if (!(conformant & EGL_OPENGL_ES_BIT))
config_caveat = EGL_NON_CONFORMANT_CONFIG;
surface_type = 0;
if (m->drawableType & GLX_WINDOW_BIT)
surface_type |= EGL_WINDOW_BIT;
if (m->drawableType & GLX_PIXMAP_BIT)
surface_type |= EGL_PIXMAP_BIT;
if (m->drawableType & GLX_PBUFFER_BIT)
surface_type |= EGL_PBUFFER_BIT;
SET_CONFIG_ATTRIB(conf, EGL_BUFFER_SIZE, m->rgbBits);
SET_CONFIG_ATTRIB(conf, EGL_RED_SIZE, m->redBits);
SET_CONFIG_ATTRIB(conf, EGL_GREEN_SIZE, m->greenBits);
SET_CONFIG_ATTRIB(conf, EGL_BLUE_SIZE, m->blueBits);
SET_CONFIG_ATTRIB(conf, EGL_ALPHA_SIZE, m->alphaBits);
SET_CONFIG_ATTRIB(conf, EGL_BIND_TO_TEXTURE_RGB, m->bindToTextureRgb);
SET_CONFIG_ATTRIB(conf, EGL_BIND_TO_TEXTURE_RGBA, m->bindToTextureRgba);
SET_CONFIG_ATTRIB(conf, EGL_COLOR_BUFFER_TYPE, EGL_RGB_BUFFER);
SET_CONFIG_ATTRIB(conf, EGL_CONFIG_CAVEAT, config_caveat);
SET_CONFIG_ATTRIB(conf, EGL_CONFORMANT, conformant);
SET_CONFIG_ATTRIB(conf, EGL_DEPTH_SIZE, m->depthBits);
SET_CONFIG_ATTRIB(conf, EGL_LEVEL, m->level);
SET_CONFIG_ATTRIB(conf, EGL_MAX_PBUFFER_WIDTH, m->maxPbufferWidth);
SET_CONFIG_ATTRIB(conf, EGL_MAX_PBUFFER_HEIGHT, m->maxPbufferHeight);
SET_CONFIG_ATTRIB(conf, EGL_MAX_PBUFFER_PIXELS, m->maxPbufferPixels);
SET_CONFIG_ATTRIB(conf, EGL_NATIVE_RENDERABLE, m->xRenderable);
SET_CONFIG_ATTRIB(conf, EGL_NATIVE_VISUAL_ID, m->visualID);
SET_CONFIG_ATTRIB(conf, EGL_NATIVE_VISUAL_TYPE, m->visualType);
SET_CONFIG_ATTRIB(conf, EGL_RENDERABLE_TYPE, renderable_type);
SET_CONFIG_ATTRIB(conf, EGL_SAMPLE_BUFFERS, m->sampleBuffers);
SET_CONFIG_ATTRIB(conf, EGL_SAMPLES, m->samples);
SET_CONFIG_ATTRIB(conf, EGL_STENCIL_SIZE, m->stencilBits);
SET_CONFIG_ATTRIB(conf, EGL_SURFACE_TYPE, surface_type);
/* what to do with GLX_TRANSPARENT_INDEX? */
if (m->transparentPixel == GLX_TRANSPARENT_RGB) {
SET_CONFIG_ATTRIB(conf, EGL_TRANSPARENT_TYPE, EGL_TRANSPARENT_RGB);
SET_CONFIG_ATTRIB(conf, EGL_TRANSPARENT_RED_VALUE, m->transparentRed);
SET_CONFIG_ATTRIB(conf, EGL_TRANSPARENT_GREEN_VALUE, m->transparentGreen);
SET_CONFIG_ATTRIB(conf, EGL_TRANSPARENT_BLUE_VALUE, m->transparentBlue);
}
else {
SET_CONFIG_ATTRIB(conf, EGL_TRANSPARENT_TYPE, EGL_NONE);
}
return EGL_TRUE;
}
/**
* Creates a set of \c _EGLConfigs that a driver will expose.
src/egl/main/eglconfigutil.h
+5
View File
@@ -11,6 +11,11 @@ extern void
_eglConfigToContextModesRec(const _EGLConfig *config, __GLcontextModes *mode);
extern EGLBoolean
_eglConfigFromContextModesRec(_EGLConfig *conf, const __GLcontextModes *m,
EGLint conformant, EGLint renderable_type);
extern EGLBoolean
_eglFillInConfigs( _EGLConfig *configs,
EGLenum fb_format, EGLenum fb_type,