#include <android/native_window.h>
#include "fg_internal.h"
+int fgPlatformGlutDeviceGet ( GLenum eWhat )
+{
+ fprintf(stderr, "fgPlatformGlutDeviceGet: STUB\n");
+ return -1;
+}
+
int fgPlatformGlutGet ( GLenum eWhat )
{
fprintf(stderr, "fgPlatformGlutGet: STUB\n");
switch (eWhat) {
- case GLUT_WINDOW_WIDTH:
- case GLUT_WINDOW_HEIGHT:
- {
- if ( fgStructure.CurrentWindow == NULL )
- return 0;
- int32_t width = ANativeWindow_getWidth(fgStructure.CurrentWindow->Window.Handle);
- int32_t height = ANativeWindow_getHeight(fgStructure.CurrentWindow->Window.Handle);
- switch ( eWhat )
- {
- case GLUT_WINDOW_WIDTH:
- return width;
- case GLUT_WINDOW_HEIGHT:
- return height;
- }
- }
+ case GLUT_WINDOW_WIDTH:
+ case GLUT_WINDOW_HEIGHT:
+ {
+ if ( fgStructure.CurrentWindow == NULL )
+ return 0;
+ int32_t width = ANativeWindow_getWidth(fgStructure.CurrentWindow->Window.Handle);
+ int32_t height = ANativeWindow_getHeight(fgStructure.CurrentWindow->Window.Handle);
+ switch ( eWhat )
+ {
+ case GLUT_WINDOW_WIDTH:
+ return width;
+ case GLUT_WINDOW_HEIGHT:
+ return height;
+ }
+ }
+
+ default:
+ return fghPlatformGlutGetEGL(eWhat);
}
return -1;
}
-int fgPlatformGlutDeviceGet ( GLenum eWhat )
-{
- fprintf(stderr, "fgPlatformGlutDeviceGet: STUB\n");
- return -1;
-}
-
int fgPlatformGlutLayerGet( GLenum eWhat )
{
+ fprintf(stderr, "fgPlatformGlutLayerGet: STUB\n");
+
/*
* This is easy as layers are not implemented ;-)
*
/* And fail. That's good. Programs do love failing. */
return -1;
}
-
-
-int *fgPlatformGlutGetModeValues(GLenum eWhat, int *size)
-{
- fprintf(stderr, "fgPlatformGlutGetModeValues: STUB\n");
- return NULL;
-}
-
-
--- /dev/null
+/*
+ * fg_state_egl.c
+ *
+ * EGL-specific freeglut state query methods.
+ *
+ * Copyright (C) 2012 Sylvain Beucler
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <GL/freeglut.h>
+#include "fg_internal.h"
+
+/*
+ * Queries the GL context about some attributes
+ */
+static int fgPlatformGetConfig( int attribute )
+{
+ int returnValue = 0;
+ int result; /* Not checked */
+
+ if( fgStructure.CurrentWindow )
+ result = eglGetConfigAttrib( fgDisplay.pDisplay.egl.Display,
+ fgStructure.CurrentWindow->Window.pContext.egl.Config,
+ attribute,
+ &returnValue );
+
+ return returnValue;
+}
+
+int fghPlatformGlutGetEGL ( GLenum eWhat )
+{
+ int nsamples = 0;
+
+ switch( eWhat )
+ {
+ /*
+ * The window/context specific queries are handled mostly by
+ * fgPlatformGetConfig().
+ */
+ case GLUT_WINDOW_NUM_SAMPLES:
+ glGetIntegerv(GL_SAMPLES, &nsamples);
+ return nsamples;
+
+ /*
+ * The rest of GLX queries under X are general enough to use a macro to
+ * check them
+ */
+# define EGL_QUERY(a,b) case a: return fgPlatformGetConfig( b );
+
+ EGL_QUERY( GLUT_WINDOW_BUFFER_SIZE, EGL_BUFFER_SIZE );
+ EGL_QUERY( GLUT_WINDOW_STENCIL_SIZE, EGL_STENCIL_SIZE );
+ EGL_QUERY( GLUT_WINDOW_DEPTH_SIZE, EGL_DEPTH_SIZE );
+ EGL_QUERY( GLUT_WINDOW_RED_SIZE, EGL_RED_SIZE );
+ EGL_QUERY( GLUT_WINDOW_GREEN_SIZE, EGL_GREEN_SIZE );
+ EGL_QUERY( GLUT_WINDOW_BLUE_SIZE, EGL_BLUE_SIZE );
+ EGL_QUERY( GLUT_WINDOW_ALPHA_SIZE, EGL_ALPHA_SIZE );
+
+# undef EGL_QUERY
+
+ /* I do not know yet if there will be a fgChooseVisual() function for Win32 */
+ case GLUT_DISPLAY_MODE_POSSIBLE:
+ {
+ /* We should not have to call fgPlatformChooseFBConfig again here. */
+ EGLConfig config;
+ return fghChooseConfigEGL(&config);
+ }
+
+ /* This is system-dependant */
+ case GLUT_WINDOW_FORMAT_ID:
+ if( fgStructure.CurrentWindow == NULL )
+ return 0;
+ return fgPlatformGetConfig( EGL_NATIVE_VISUAL_ID );
+
+ default:
+ fgWarning( "glutGet(): missing enum handle %d", eWhat );
+ break;
+ }
+
+ return -1;
+}
+
+int* fgPlatformGlutGetModeValues(GLenum eWhat, int *size)
+{
+ int *array;
+
+ int attributes[9];
+ int attribute_name = 0;
+
+ array = NULL;
+ *size = 0;
+
+ switch (eWhat)
+ {
+ case GLUT_AUX:
+ break;
+
+ case GLUT_MULTISAMPLE:
+ attributes[0] = EGL_BUFFER_SIZE;
+ attributes[1] = EGL_DONT_CARE;
+ attributes[2] = EGL_SAMPLE_BUFFERS;
+ attributes[3] = 1;
+ attributes[4] = EGL_SAMPLES;
+ attributes[5] = 1;
+ attributes[6] = EGL_NONE;
+
+ attribute_name = EGL_SAMPLES;
+
+ EGLConfig* configArray;
+ EGLConfig* config;
+ EGLint configArraySize = 0;
+
+ /* Get number of available configs */
+ if (!eglChooseConfig(fgDisplay.pDisplay.egl.Display,
+ attributes, NULL, 0,
+ &configArraySize))
+ break;
+ configArray = calloc(configArraySize, sizeof(EGLConfig));
+
+ if (!eglChooseConfig(fgDisplay.pDisplay.egl.Display,
+ attributes, configArray, configArraySize,
+ &configArraySize))
+ break;
+
+ /* We get results in ascending order */
+ {
+ int * temp_array;
+ int previous_value;
+ int i;
+
+ array = malloc(sizeof(int) * configArraySize);
+ previous_value = 0;
+
+ for (i = 0; i < configArraySize; i++) {
+ int value;
+ eglGetConfigAttrib(fgDisplay.pDisplay.egl.Display,
+ configArray[i], attribute_name, &value);
+ if (value > previous_value)
+ {
+ previous_value = value;
+ temp_array[*size] = value;
+ (*size)++;
+ }
+ }
+
+ array = realloc(array, sizeof(int) * (*size));
+ }
+ free(configArray);
+ break;
+
+ default:
+ break;
+ }
+
+ return array;
+}
projects / freeglut / commitdiff