Implemented glCopyBufferSubData.

TRAC #22811 Signed-off-by: Jamie Madill Signed-off-by: Shannon Woods Author: Geoff Lang git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2134 736b8ea6-26fd-11df-bfd4-992fa37f6226

Implemented glCopyBufferSubData.
296c3f25 · shannon.woods%transgaming.com@gtempaccount.com · 614c07f4 · 296c3f25
Commit 296c3f25 authored Apr 13, 2013 by shannon.woods%transgaming.com@gtempaccount.com
Show whitespace changes
Inline Side-by-side

Showing with 82 additions and 1 deletion

libGLESv2.cpp src/libGLESv2/libGLESv2.cpp +82 -1

No files found.
--- a/src/libGLESv2/libGLESv2.cpp
+++ b/src/libGLESv2/libGLESv2.cpp
@@ -8667,9 +8667,90 @@ void __stdcall glCopyBufferSubData(GLenum readTarget, GLenum writeTarget, GLintp
            {
                return gl::error(GL_INVALID_OPERATION);
            }
+            gl::Buffer *readBuffer = NULL;
+            switch (readTarget)
+            {
+              case GL_ARRAY_BUFFER:
+                readBuffer = context->getArrayBuffer();
+                break;
+              case GL_COPY_READ_BUFFER:
+                readBuffer = context->getCopyReadBuffer();
+                break;
+              case GL_COPY_WRITE_BUFFER:
+                readBuffer = context->getCopyWriteBuffer();
+                break;
+              case GL_ELEMENT_ARRAY_BUFFER:
+                readBuffer = context->getElementArrayBuffer();
+                break;
+              case GL_PIXEL_PACK_BUFFER:
+                readBuffer = context->getPixelPackBuffer();
+                break;
+              case GL_PIXEL_UNPACK_BUFFER:
+                readBuffer = context->getPixelUnpackBuffer();
+                break;
+              case GL_TRANSFORM_FEEDBACK_BUFFER:
+                readBuffer = context->getGenericTransformFeedbackBuffer();
+                break;
+              case GL_UNIFORM_BUFFER:
+                readBuffer = context->getGenericUniformBuffer();
+                break;
+              default:
+                return gl::error(GL_INVALID_ENUM);
            }
-        UNIMPLEMENTED();
+            gl::Buffer *writeBuffer = NULL;
+            switch (writeTarget)
+            {
+              case GL_ARRAY_BUFFER:
+                writeBuffer = context->getArrayBuffer();
+                break;
+              case GL_COPY_READ_BUFFER:
+                writeBuffer = context->getCopyReadBuffer();
+                break;
+              case GL_COPY_WRITE_BUFFER:
+                writeBuffer = context->getCopyWriteBuffer();
+                break;
+              case GL_ELEMENT_ARRAY_BUFFER:
+                writeBuffer = context->getElementArrayBuffer();
+                break;
+              case GL_PIXEL_PACK_BUFFER:
+                writeBuffer = context->getPixelPackBuffer();
+                break;
+              case GL_PIXEL_UNPACK_BUFFER:
+                writeBuffer = context->getPixelUnpackBuffer();
+                break;
+              case GL_TRANSFORM_FEEDBACK_BUFFER:
+                writeBuffer = context->getGenericTransformFeedbackBuffer();
+                break;
+              case GL_UNIFORM_BUFFER:
+                writeBuffer = context->getGenericUniformBuffer();
+                break;
+              default:
+                return gl::error(GL_INVALID_ENUM);
+            }
+            if (!readBuffer || !writeBuffer)
+            {
+                return gl::error(GL_INVALID_OPERATION);
+            }
+            if (readOffset < 0 || writeOffset < 0 || size < 0 ||
+                static_cast<unsigned int>(readOffset + size) > readBuffer->size() ||
+                static_cast<unsigned int>(writeOffset + size) > writeBuffer->size())
+            {
+                return gl::error(GL_INVALID_VALUE);
+            }
+            if (readBuffer == writeBuffer && abs(readOffset - writeOffset) < size)
+            {
+                return gl::error(GL_INVALID_VALUE);
+            }
+            // TODO: Verify that readBuffer and writeBuffer are not currently mapped (GL_INVALID_OPERATION)
+            writeBuffer->copyBufferSubData(readBuffer, readOffset, writeOffset, size);
+        }
    }
    catch(std::bad_alloc&)
    {