public void DrawArrays(MgPrimitiveTopology topology, uint first, uint count, uint instanceCount, uint firstInstance)
{
//void glDrawArraysInstancedBaseInstance(GLenum mode, GLint first, GLsizei count, GLsizei primcount, GLuint baseinstance);
//mDrawCommands.Add (mIncompleteDrawCommand);
// first => firstVertex
// count => vertexCount
// primcount => instanceCount Specifies the number of instances of the indexed geometry that should be drawn.
// baseinstance => firstInstance Specifies the base instance for use in fetching instanced vertex attributes.
if (first >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("first", "first > int.MaxValue");
}
if (count >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("count", "count > int.MaxValue");
}
if (instanceCount >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("instanceCount", "instanceCount > int.MaxValue");
}
GL.DrawArraysInstancedBaseInstance(GetPrimitiveType(topology), (int)first, (int)count, (int)instanceCount, firstInstance);
}
public void DrawArraysIndirect(MgPrimitiveTopology topology, IntPtr indirect, uint count, uint stride)
{
// ARB_multi_draw_indirect
// typedef struct VkDrawIndirectCommand {
// uint32_t vertexCount;
// uint32_t instanceCount;
// uint32_t firstVertex;
// uint32_t firstInstance;
// } VkDrawIndirectCommand;
// glMultiDrawArraysIndirect
//void glMultiDrawArraysIndirect(GLenum mode, const void *indirect, GLsizei drawcount, GLsizei stride);
// indirect => buffer + offset IntPtr
// drawCount => drawCount
// stride => stride
// typedef struct {
// uint count;
// uint instanceCount;
// uint first;
// uint baseInstance;
// } DrawArraysIndirectCommand;
//mDrawCommands.Add (mIncompleteDrawCommand);
if (count >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("count", "count >= int.MaxValue");
}
if (stride >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("stride", "stride >= int.MaxValue");
}
GL.MultiDrawArraysIndirect(GetPrimitiveType(topology), indirect, (int)count, (int)stride);
}
private static EffectVariantOptions ExtractVariantOptions(
MgFrontFace front,
MgPrimitiveTopology topology,
MgtfMaterial material)
{
return(new EffectVariantOptions
{
FrontFace = front,
CullMode =
material.DoubleSided
? MgCullModeFlagBits.NONE
: MgCullModeFlagBits.BACK_BIT,
});
}
public void DrawIndexedIndirect(MgPrimitiveTopology topology, MgIndexType indexType, IntPtr indirect, uint count, uint stride)
{
// typedef struct VkDrawIndexedIndirectCommand {
// uint32_t indexCount;
// uint32_t instanceCount;
// uint32_t firstIndex;
// int32_t vertexOffset;
// uint32_t firstInstance;
// } VkDrawIndexedIndirectCommand;
// void glMultiDrawElementsIndirect(GLenum mode, GLenum type, const void *indirect, GLsizei drawcount, GLsizei stride);
// indirect => buffer + offset (IntPtr)
// drawcount => drawcount
// stride => stride
// glDrawElementsInstancedBaseVertexBaseInstance(mode,
// cmd->count,
// type,
// cmd->firstIndex * size-of-type,
// cmd->instanceCount,
// cmd->baseVertex,
// cmd->baseInstance);
// typedef struct {
// uint count;
// uint instanceCount;
// uint firstIndex;
// uint baseVertex; // TODO: negetive index
// uint baseInstance;
// } DrawElementsIndirectCommand;
//mDrawCommands.Add (mIncompleteDrawCommand);
if (count >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("count", "count >= int.MaxValue");
}
if (stride >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("stride", "stride >= int.MaxValue");
}
GL.MultiDrawElementsIndirect((PrimitiveType)GetPrimitiveType(topology), (DrawElementsType)GetIndexBufferType(indexType), indirect, (int)count, (int)stride);
}
public static PrimitiveType GetPrimitiveType(MgPrimitiveTopology topology)
{
switch (topology)
{
case MgPrimitiveTopology.LINE_LIST:
return(PrimitiveType.Lines);
case MgPrimitiveTopology.POINT_LIST:
return(PrimitiveType.Points);
case MgPrimitiveTopology.TRIANGLE_LIST:
return(PrimitiveType.Triangles);
case MgPrimitiveTopology.LINE_STRIP:
return(PrimitiveType.LineStrip);
case MgPrimitiveTopology.TRIANGLE_FAN:
return(PrimitiveType.TriangleFan);
case MgPrimitiveTopology.TRIANGLE_STRIP:
return(PrimitiveType.TriangleStrip);
case MgPrimitiveTopology.LINE_LIST_WITH_ADJACENCY:
return(PrimitiveType.LinesAdjacency);
case MgPrimitiveTopology.LINE_STRIP_WITH_ADJACENCY:
return(PrimitiveType.LineStripAdjacency);
case MgPrimitiveTopology.TRIANGLE_LIST_WITH_ADJACENCY:
return(PrimitiveType.TrianglesAdjacency);
case MgPrimitiveTopology.TRIANGLE_STRIP_WITH_ADJACENCY:
return(PrimitiveType.TriangleStripAdjacency);
case MgPrimitiveTopology.PATCH_LIST:
return(PrimitiveType.Patches);
default:
throw new NotSupportedException();
}
}
public void DrawIndexed(MgPrimitiveTopology topology, MgIndexType indexType, uint first, uint count, uint instanceCount, int vertexOffset)
{
// void glDrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type, GLvoid *indices, GLsizei primcount, GLint basevertex);
// count => indexCount Specifies the number of elements to be rendered. (divide by elements)
// indices => firstIndex Specifies a byte offset (cast to a pointer type) (multiple by data size)
// primcount => instanceCount Specifies the number of instances of the indexed geometry that should be drawn.
// basevertex => vertexOffset Specifies a constant that should be added to each element of indices when chosing elements from the enabled vertex arrays.
// TODO : need to handle negetive offset
//mDrawCommands.Add (mIncompleteDrawCommand);
if (count >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("count", "count >= int.MaxValue");
}
if (instanceCount >= (uint)int.MaxValue)
{
throw new ArgumentOutOfRangeException("instanceCount", "instanceCount >= int.MaxValue");
}
GL.DrawElementsInstancedBaseVertex(GetPrimitiveType(topology), (int)count, GetElementType(indexType), GetByteOffset(first, indexType), (int)instanceCount, vertexOffset);
}
private static MTLPrimitiveType TranslatePrimitiveType(MgPrimitiveTopology topology)
{
switch (topology)
{
default:
throw new NotSupportedException();
case MgPrimitiveTopology.TRIANGLE_LIST:
return(MTLPrimitiveType.Triangle);
case MgPrimitiveTopology.POINT_LIST:
return(MTLPrimitiveType.Point);
case MgPrimitiveTopology.TRIANGLE_STRIP:
return(MTLPrimitiveType.TriangleStrip);
case MgPrimitiveTopology.LINE_LIST:
return(MTLPrimitiveType.Line);
case MgPrimitiveTopology.LINE_STRIP:
return(MTLPrimitiveType.LineStrip);
}
}
public void DrawIndexedIndirect(MgPrimitiveTopology topology, MgIndexType indexType, IntPtr indirect, uint count, uint stride)
{
}
public void DrawIndexed(MgPrimitiveTopology topology, MgIndexType indexType, uint first, uint count, uint instanceCount, int vertexOffset)
{
}
public void DrawArraysIndirect(MgPrimitiveTopology topology, IntPtr indirect, uint count, uint stride)
{
}
public void DrawArrays(MgPrimitiveTopology topology, uint first, uint count, uint instanceCount, uint firstInstance)
{
}
