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PBO/VBO checks now query OpenGL directly instead of keeping track of the currently bound buffers

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This commit is contained in:
Elias Naur 2005-12-27 14:46:42 +00:00
parent 1d521cf604
commit d633986260
13 changed files with 54 additions and 109 deletions
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32
src/java/org/lwjgl/opengl/GLChecks.java
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@ -32,6 +32,7 @@
package org.lwjgl.opengl;
import java.nio.Buffer;
import java.nio.IntBuffer;
import org.lwjgl.BufferUtils;
@ -57,51 +58,66 @@ class GLChecks {
return StateTracker.getReferencesStack().getReferences();
}
private static boolean checkBufferObject(int buffer_enum, boolean state) {
IntBuffer scratch_buffer = GLContext.getCapabilities().scratch_int_buffer;
GL11.glGetInteger(buffer_enum, scratch_buffer);
boolean is_enabled = scratch_buffer.get(0) != 0;
return state == is_enabled;
}
/** Helper method to ensure that array buffer objects are disabled. If they are enabled, we'll throw an OpenGLException */
static void ensureArrayVBOdisabled() {
if (StateTracker.getVBOArrayStack().getState() != 0)
if ((GLContext.getCapabilities().OpenGL15 && !checkBufferObject(GL15.GL_ARRAY_BUFFER_BINDING, false) ||
(GLContext.getCapabilities().GL_ARB_vertex_buffer_object && !checkBufferObject(ARBVertexBufferObject.GL_ARRAY_BUFFER_BINDING_ARB, false))))
throw new OpenGLException("Cannot use Buffers when Array Buffer Object is enabled");
}
/** Helper method to ensure that array buffer objects are enabled. If they are disabled, we'll throw an OpenGLException */
static void ensureArrayVBOenabled() {
if (StateTracker.getVBOArrayStack().getState() == 0)
if ((GLContext.getCapabilities().OpenGL15 && !checkBufferObject(GL15.GL_ARRAY_BUFFER_BINDING, true) ||
(GLContext.getCapabilities().GL_ARB_vertex_buffer_object && !checkBufferObject(ARBVertexBufferObject.GL_ARRAY_BUFFER_BINDING_ARB, true))))
throw new OpenGLException("Cannot use offsets when Array Buffer Object is disabled");
}
/** Helper method to ensure that element array buffer objects are disabled. If they are enabled, we'll throw an OpenGLException */
static void ensureElementVBOdisabled() {
if (StateTracker.getVBOElementStack().getState() != 0)
if ((GLContext.getCapabilities().OpenGL15 && !checkBufferObject(GL15.GL_ELEMENT_ARRAY_BUFFER_BINDING, false) ||
(GLContext.getCapabilities().GL_ARB_vertex_buffer_object && !checkBufferObject(ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, false))))
throw new OpenGLException("Cannot use Buffers when Element Array Buffer Object is enabled");
}
/** Helper method to ensure that element array buffer objects are enabled. If they are disabled, we'll throw an OpenGLException */
static void ensureElementVBOenabled() {
if (StateTracker.getVBOElementStack().getState() == 0)
if ((GLContext.getCapabilities().OpenGL15 && !checkBufferObject(GL15.GL_ELEMENT_ARRAY_BUFFER_BINDING, true) ||
(GLContext.getCapabilities().GL_ARB_vertex_buffer_object && !checkBufferObject(ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, true))))
throw new OpenGLException("Cannot use offsets when Element Array Buffer Object is disabled");
}
/** Helper method to ensure that pixel pack buffer objects are disabled. If they are enabled, we'll throw an OpenGLException */
static void ensurePackPBOdisabled() {
if (StateTracker.getPBOPackStack().getState() != 0)
if ((GLContext.getCapabilities().GL_ARB_pixel_buffer_object && !checkBufferObject(ARBPixelBufferObject.GL_PIXEL_PACK_BUFFER_BINDING_ARB, false) ||
(GLContext.getCapabilities().GL_EXT_pixel_buffer_object && !checkBufferObject(EXTPixelBufferObject.GL_PIXEL_PACK_BUFFER_BINDING_EXT, false))))
throw new OpenGLException("Cannot use Buffers when Pixel Pack Buffer Object is enabled");
}
/** Helper method to ensure that pixel pack buffer objects are enabled. If they are disabled, we'll throw an OpenGLException */
static void ensurePackPBOenabled() {
if (StateTracker.getPBOPackStack().getState() == 0)
if ((GLContext.getCapabilities().GL_ARB_pixel_buffer_object && !checkBufferObject(ARBPixelBufferObject.GL_PIXEL_PACK_BUFFER_BINDING_ARB, true) ||
(GLContext.getCapabilities().GL_EXT_pixel_buffer_object && !checkBufferObject(EXTPixelBufferObject.GL_PIXEL_PACK_BUFFER_BINDING_EXT, true))))
throw new OpenGLException("Cannot use offsets when Pixel Pack Buffer Object is disabled");
}
/** Helper method to ensure that pixel unpack buffer objects are disabled. If they are enabled, we'll throw an OpenGLException */
static void ensureUnpackPBOdisabled() {
if (StateTracker.getPBOUnpackStack().getState() != 0)
if ((GLContext.getCapabilities().GL_ARB_pixel_buffer_object && !checkBufferObject(ARBPixelBufferObject.GL_PIXEL_UNPACK_BUFFER_BINDING_ARB, false) ||
(GLContext.getCapabilities().GL_EXT_pixel_buffer_object && !checkBufferObject(EXTPixelBufferObject.GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, false))))
throw new OpenGLException("Cannot use Buffers when Pixel Unpack Buffer Object is enabled");
}
/** Helper method to ensure that pixel unpack buffer objects are enabled. If they are disabled, we'll throw an OpenGLException */
static void ensureUnpackPBOenabled() {
if (StateTracker.getPBOUnpackStack().getState() == 0)
if ((GLContext.getCapabilities().GL_ARB_pixel_buffer_object && !checkBufferObject(ARBPixelBufferObject.GL_PIXEL_UNPACK_BUFFER_BINDING_ARB, true) ||
(GLContext.getCapabilities().GL_EXT_pixel_buffer_object && !checkBufferObject(EXTPixelBufferObject.GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, true))))
throw new OpenGLException("Cannot use offsets when Pixel Unpack Buffer Object is disabled");
}