LibWeb/WebGL2: Implement drawRangeElements

Author: Lubrsi

Libraries/LibWeb/WebGL/WebGL2RenderingContextBase.idl

@@ -365,7 +365,7 @@ interface mixin WebGL2RenderingContextBase {
     undefined vertexAttribDivisor(GLuint index, GLuint divisor);
     undefined drawArraysInstanced(GLenum mode, GLint first, GLsizei count, GLsizei instanceCount);
     undefined drawElementsInstanced(GLenum mode, GLsizei count, GLenum type, GLintptr offset, GLsizei instanceCount);
-    [FIXME] undefined drawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, GLintptr offset);
+    undefined drawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, GLintptr offset);
 
     // Multiple Render Targets
     undefined drawBuffers(sequence<GLenum> buffers);

Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp

@@ -404,6 +404,14 @@ void WebGL2RenderingContextImpl::draw_elements_instanced(WebIDL::UnsignedLong mo
     needs_to_present();
 }
 
+void WebGL2RenderingContextImpl::draw_range_elements(WebIDL::UnsignedLong mode, WebIDL::UnsignedLong start, WebIDL::UnsignedLong end, WebIDL::Long count, WebIDL::UnsignedLong type, WebIDL::LongLong offset)
+{
+    m_context->make_current();
+    m_context->notify_content_will_change();
+    needs_to_present();
+    glDrawRangeElements(mode, start, end, count, type, reinterpret_cast<void*>(offset));
+}
+
 void WebGL2RenderingContextImpl::draw_buffers(Vector<WebIDL::UnsignedLong> buffers)
 {
     m_context->make_current();

Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.h

@@ -61,6 +61,7 @@ class WebGL2RenderingContextImpl : public WebGLRenderingContextBase {
     void vertex_attrib_divisor(WebIDL::UnsignedLong index, WebIDL::UnsignedLong divisor);
     void draw_arrays_instanced(WebIDL::UnsignedLong mode, WebIDL::Long first, WebIDL::Long count, WebIDL::Long instance_count);
     void draw_elements_instanced(WebIDL::UnsignedLong mode, WebIDL::Long count, WebIDL::UnsignedLong type, WebIDL::LongLong offset, WebIDL::Long instance_count);
+    void draw_range_elements(WebIDL::UnsignedLong mode, WebIDL::UnsignedLong start, WebIDL::UnsignedLong end, WebIDL::Long count, WebIDL::UnsignedLong type, WebIDL::LongLong offset);
     void draw_buffers(Vector<WebIDL::UnsignedLong> buffers);
     void clear_bufferfv(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, Float32List values, WebIDL::UnsignedLongLong src_offset);
     void clear_bufferiv(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, Int32List values, WebIDL::UnsignedLongLong src_offset);