progs/egl: Fix screen surface demos.

Set the screen surface size to the mode size, as the spec requires the
screen surface size to be larger than the mode size.  Besides, bind the
API to OpenGL as they are written in it.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>

5 files changed, 22 insertions, 10 deletions

diff --git a/src/egl/demo1.c b/src/egl/demo1.c
index 34a516e7..d892734e 100644
--- a/src/egl/demo1.c
+++ b/src/egl/demo1.c
@@ -114,6 +114,7 @@ main(int argc, char *argv[])
 
    PrintConfigs(d, configs, numConfigs);
 
+   eglBindAPI(EGL_OPENGL_API);
    ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
    if (ctx == EGL_NO_CONTEXT) {
       printf("failed to create context\n");
diff --git a/src/egl/demo2.c b/src/egl/demo2.c
index 39946567..b9e92f62 100644
--- a/src/egl/demo2.c
+++ b/src/egl/demo2.c
@@ -111,11 +111,7 @@ main(int argc, char *argv[])
       EGL_HEIGHT, 500,
       EGL_NONE
    };
-   const EGLint screenAttribs[] = {
-      EGL_WIDTH, 1024,
-      EGL_HEIGHT, 768,
-      EGL_NONE
-   };
+   EGLint screenAttribs[32];
    EGLModeMESA mode;
    EGLScreenMESA screen;
    EGLint count;
@@ -149,6 +145,7 @@ main(int argc, char *argv[])
    eglGetScreensMESA(d, &screen, 1, &count);
    eglGetModesMESA(d, screen, &mode, 1, &count);
 
+   eglBindAPI(EGL_OPENGL_API);
    ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
    if (ctx == EGL_NO_CONTEXT) {
       printf("failed to create context\n");
@@ -169,6 +166,13 @@ main(int argc, char *argv[])
 
    b = eglMakeCurrent(d, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
 
+   i = 0;
+   screenAttribs[i++] = EGL_WIDTH;
+   eglGetModeAttribMESA(d, mode, EGL_WIDTH, &screenAttribs[i++]);
+   screenAttribs[i++] = EGL_HEIGHT;
+   eglGetModeAttribMESA(d, mode, EGL_HEIGHT, &screenAttribs[i++]);
+   screenAttribs[i] = EGL_NONE;
+
    screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs);
    if (screen_surf == EGL_NO_SURFACE) {
       printf("failed to create screen surface\n");
diff --git a/src/egl/demo3.c b/src/egl/demo3.c
index 0665fd05..64b9ee65 100644
--- a/src/egl/demo3.c
+++ b/src/egl/demo3.c
@@ -564,11 +564,8 @@ main(int argc, char *argv[])
    EGLint numConfigs, count;
    EGLBoolean b;
    const GLubyte *bitmap;
-   const EGLint screenAttribs[] = {
-      EGL_WIDTH, 1024,
-      EGL_HEIGHT, 768,
-      EGL_NONE
-   };
+   EGLint screenAttribs[32];
+   EGLint i;
 
    EGLDisplay d = eglGetDisplay(EGL_DEFAULT_DISPLAY);
    assert(d);
@@ -590,12 +587,20 @@ main(int argc, char *argv[])
    eglGetScreensMESA(d, &screen, 1, &count);
    eglGetModesMESA(d, screen, &mode, 1, &count);
 
+   eglBindAPI(EGL_OPENGL_API);
    ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
    if (ctx == EGL_NO_CONTEXT) {
       printf("failed to create context\n");
       return 0;
    }
 
+   i = 0;
+   screenAttribs[i++] = EGL_WIDTH;
+   eglGetModeAttribMESA(d, mode, EGL_WIDTH, &screenAttribs[i++]);
+   screenAttribs[i++] = EGL_HEIGHT;
+   eglGetModeAttribMESA(d, mode, EGL_HEIGHT, &screenAttribs[i++]);
+   screenAttribs[i] = EGL_NONE;
+
    screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs);
    if (screen_surf == EGL_NO_SURFACE) {
       printf("failed to create screen surface\n");
diff --git a/src/egl/eglgears.c b/src/egl/eglgears.c
index 2d9b8cac..63490953 100644
--- a/src/egl/eglgears.c
+++ b/src/egl/eglgears.c
@@ -426,6 +426,7 @@ main(int argc, char *argv[])
 	}
 	printf("eglgears: Using screen mode/size %d: %d x %d\n", chosenMode, width, height);
 
+	eglBindAPI(EGL_OPENGL_API);
 	ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
 	if (ctx == EGL_NO_CONTEXT) {
 		printf("eglgears: failed to create context\n");
diff --git a/src/egl/egltri.c b/src/egl/egltri.c
index 9bbc3cdd..006e06eb 100644
--- a/src/egl/egltri.c
+++ b/src/egl/egltri.c
@@ -208,6 +208,7 @@ int main(int argc, char *argv[])
 	}
 	printf("egltri: Using screen mode/size %d: %d x %d\n", chosenMode, width, height);
 
+	eglBindAPI(EGL_OPENGL_API);
 	ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
 	if (ctx == EGL_NO_CONTEXT) {
 		printf("egltri: failed to create context\n");