1 files changed, 128 insertions, 0 deletions
diff --git a/src/egl/main/eglconfigutil.c b/src/egl/main/eglconfigutil.c
new file mode 100644
index 0000000000..e416b190f0
--- /dev/null
+++ b/src/egl/main/eglconfigutil.c
@@ -0,0 +1,128 @@
+/**
+ * Extra utility functions related to EGL configs.
+ */
+
+
+#include <stdlib.h>
+#include <string.h>
+#include "eglconfigutil.h"
+
+
+/**
+ * Convert an _EGLConfig to a __GLcontextModes object.
+ * NOTE: This routine may be incomplete - we're only making sure that
+ * the fields needed by Mesa (for _mesa_create_context/framebuffer) are
+ * set correctly.
+ */
+void
+_eglConfigToContextModesRec(const _EGLConfig *config, __GLcontextModes *mode)
+{
+   memset(mode, 0, sizeof(*mode));
+
+   mode->rgbMode = GL_TRUE; /* no color index */
+   mode->colorIndexMode = GL_FALSE;
+   mode->doubleBufferMode = GL_TRUE;  /* always DB for now */
+   mode->stereoMode = GL_FALSE;
+
+   mode->redBits = GET_CONFIG_ATTRIB(config, EGL_RED_SIZE);
+   mode->greenBits = GET_CONFIG_ATTRIB(config, EGL_GREEN_SIZE);
+   mode->blueBits = GET_CONFIG_ATTRIB(config, EGL_BLUE_SIZE);
+   mode->alphaBits = GET_CONFIG_ATTRIB(config, EGL_ALPHA_SIZE);
+   mode->rgbBits = GET_CONFIG_ATTRIB(config, EGL_BUFFER_SIZE);
+
+   /* no rgba masks - fix? */
+
+   mode->depthBits = GET_CONFIG_ATTRIB(config, EGL_DEPTH_SIZE);
+   mode->haveDepthBuffer = mode->depthBits > 0;
+
+   mode->stencilBits = GET_CONFIG_ATTRIB(config, EGL_STENCIL_SIZE);
+   mode->haveStencilBuffer = mode->stencilBits > 0;
+
+   /* no accum */
+
+   mode->level = GET_CONFIG_ATTRIB(config, EGL_LEVEL);
+   mode->samples = GET_CONFIG_ATTRIB(config, EGL_SAMPLES);
+   mode->sampleBuffers = GET_CONFIG_ATTRIB(config, EGL_SAMPLE_BUFFERS);
+
+   /* surface type - not really needed */
+   mode->visualType = GLX_TRUE_COLOR;
+   mode->renderType = GLX_RGBA_BIT;
+}
+
+
+/**
+ * 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);
+
+   if (m->visualType != GLX_NONE)
+      SET_CONFIG_ATTRIB(conf, EGL_NATIVE_VISUAL_TYPE, m->visualType);
+   else
+      SET_CONFIG_ATTRIB(conf, EGL_NATIVE_VISUAL_TYPE, EGL_NONE);
+
+   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;
+}