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tweaking GLSL and FBO checks

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This commit is contained in:
andres
2013-05-04 19:00:38 -04:00
parent 4ca816d9d0
commit 4700330a1f
3 changed files with 63 additions and 20 deletions
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33
java/libraries/lwjgl/src/processing/lwjgl/PGL.java
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@@ -562,6 +562,13 @@ public class PGL extends processing.opengl.PGL {
protected void update() {
if (!fboLayerCreated) {
if (!hasFBOs()) {
throw new RuntimeException("Framebuffer objects are not supported by this hardware (or driver)");
}
if (!hasShaders()) {
throw new RuntimeException("GLSL shaders are not supported by this hardware (or driver)");
}
String ext = getString(EXTENSIONS);
if (-1 < ext.indexOf("texture_non_power_of_two")) {
fboWidth = pg.width;
@@ -2511,7 +2518,33 @@ public class PGL extends processing.opengl.PGL {
return res;
}
protected boolean hasFBOs() {
int major = getGLVersion()[0];
if (major < 2) {
String ext = getString(EXTENSIONS);
return ext.indexOf("_framebuffer_object") != -1;
}
return true; // Assuming FBOs are always available for OpenGL >= 2.0
}
protected boolean hasShaders() {
// GLSL might still be available through extensions. For instance,
// GLContext.hasGLSL() gives false for older intel integrated chipsets on
// OSX, where OpenGL is 1.4 but shaders are available.
int major = getGLVersion()[0];
if (major < 2) {
String ext = getString(EXTENSIONS);
return ext.indexOf("_fragment_shader") != -1 &&
ext.indexOf("_vertex_shader") != -1 &&
ext.indexOf("_shader_objects") != -1 &&
ext.indexOf("_shading_language") != -1;
}
return true; // Assuming shaders are always available for OpenGL >= 2.0
}
protected static ByteBuffer allocateDirectByteBuffer(int size) {
int bytes = PApplet.max(MIN_DIRECT_BUFFER_SIZE, size) * SIZEOF_BYTE;
return ByteBuffer.allocateDirect(bytes).order(ByteOrder.nativeOrder());