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authorChia-I Wu <olvaffe@gmail.com>2010-01-31 12:57:53 +0800
committerChia-I Wu <olvaffe@gmail.com>2010-01-31 14:46:14 +0800
commitcaa5c8dfe8e5857aa25b2a3fa649d553e651e144 (patch)
treeab90048a6b5cff52a9fdc84a91dbb83b96ecbdd4 /src/egl
parent6f1529293f218015f47d86dcba774c3d9faa2cda (diff)
egl: Refactor _eglInitContext.
Refactor attribute list parsing code to _eglParseContextAttribList. Add a check to make sure the config supports the client API.
Diffstat (limited to 'src/egl')
-rw-r--r--src/egl/main/eglcontext.c114
1 files changed, 95 insertions, 19 deletions
diff --git a/src/egl/main/eglcontext.c b/src/egl/main/eglcontext.c
index d0c6b1b64c..f73cf2d0b3 100644
--- a/src/egl/main/eglcontext.c
+++ b/src/egl/main/eglcontext.c
@@ -4,9 +4,96 @@
#include "eglconfig.h"
#include "eglcontext.h"
#include "egldisplay.h"
-#include "egldriver.h"
#include "eglcurrent.h"
#include "eglsurface.h"
+#include "egllog.h"
+
+
+/**
+ * Return the API bit (one of EGL_xxx_BIT) of the context.
+ */
+static EGLint
+_eglGetContextAPIBit(_EGLContext *ctx)
+{
+ EGLint bit = 0;
+
+ switch (ctx->ClientAPI) {
+ case EGL_OPENGL_ES_API:
+ switch (ctx->ClientVersion) {
+ case 1:
+ bit = EGL_OPENGL_ES_BIT;
+ break;
+ case 2:
+ bit = EGL_OPENGL_ES2_BIT;
+ break;
+ default:
+ break;
+ }
+ break;
+ case EGL_OPENVG_API:
+ bit = EGL_OPENVG_BIT;
+ break;
+ case EGL_OPENGL_API:
+ bit = EGL_OPENGL_BIT;
+ break;
+ default:
+ break;
+ }
+
+ return bit;
+}
+
+
+/**
+ * Parse the list of context attributes and return the proper error code.
+ */
+static EGLint
+_eglParseContextAttribList(_EGLContext *ctx, const EGLint *attrib_list)
+{
+ EGLenum api = ctx->ClientAPI;
+ EGLint i, err = EGL_SUCCESS;
+
+ if (!attrib_list)
+ return EGL_SUCCESS;
+
+ for (i = 0; attrib_list[i] != EGL_NONE; i++) {
+ EGLint attr = attrib_list[i++];
+ EGLint val = attrib_list[i];
+
+ switch (attr) {
+ case EGL_CONTEXT_CLIENT_VERSION:
+ if (api != EGL_OPENGL_ES_API) {
+ err = EGL_BAD_ATTRIBUTE;
+ break;
+ }
+ if (val != 1 && val != 2) {
+ err = EGL_BAD_ATTRIBUTE;
+ break;
+ }
+ ctx->ClientVersion = val;
+ break;
+ default:
+ err = EGL_BAD_ATTRIBUTE;
+ break;
+ }
+
+ if (err != EGL_SUCCESS) {
+ _eglLog(_EGL_DEBUG, "bad context attribute 0x%04x", attr);
+ break;
+ }
+ }
+
+ if (err == EGL_SUCCESS) {
+ EGLint renderable_type, api_bit;
+
+ renderable_type = GET_CONFIG_ATTRIB(ctx->Config, EGL_RENDERABLE_TYPE);
+ api_bit = _eglGetContextAPIBit(ctx);
+ if (!(renderable_type & api_bit))
+ err = EGL_BAD_CONFIG;
+ }
+
+ return err;
+}
/**
@@ -17,8 +104,8 @@ EGLBoolean
_eglInitContext(_EGLDriver *drv, _EGLContext *ctx,
_EGLConfig *conf, const EGLint *attrib_list)
{
- EGLint i;
const EGLenum api = eglQueryAPI();
+ EGLint err;
if (api == EGL_NONE) {
_eglError(EGL_BAD_MATCH, "eglCreateContext(no client API)");
@@ -26,26 +113,15 @@ _eglInitContext(_EGLDriver *drv, _EGLContext *ctx,
}
memset(ctx, 0, sizeof(_EGLContext));
+ ctx->ClientAPI = api;
+ ctx->Config = conf;
+ ctx->WindowRenderBuffer = EGL_NONE;
ctx->ClientVersion = 1; /* the default, per EGL spec */
- for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
- switch (attrib_list[i]) {
- case EGL_CONTEXT_CLIENT_VERSION:
- i++;
- ctx->ClientVersion = attrib_list[i];
- break;
- default:
- _eglError(EGL_BAD_ATTRIBUTE, "_eglInitContext");
- return EGL_FALSE;
- }
- }
-
- ctx->Config = conf;
- ctx->DrawSurface = EGL_NO_SURFACE;
- ctx->ReadSurface = EGL_NO_SURFACE;
- ctx->ClientAPI = api;
- ctx->WindowRenderBuffer = EGL_NONE;
+ err = _eglParseContextAttribList(ctx, attrib_list);
+ if (err != EGL_SUCCESS)
+ return _eglError(err, "eglCreateContext");
return EGL_TRUE;
}