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common/d3d12: emulate polygon mode

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This commit is contained in:
Vincent Lejeune 2015-12-08 23:42:06 +01:00
parent 6221fecf3b
commit 1cda2977bb
2 changed files with 15 additions and 7 deletions
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9
rpcs3/Emu/RSX/Common/BufferUtils.cpp
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@ -180,14 +180,19 @@ bool is_primitive_native(unsigned m_draw_mode) noexcept
case CELL_GCM_PRIMITIVE_TRIANGLES:
case CELL_GCM_PRIMITIVE_TRIANGLE_STRIP:
case CELL_GCM_PRIMITIVE_QUAD_STRIP:
case CELL_GCM_PRIMITIVE_POLYGON:
return true;
case CELL_GCM_PRIMITIVE_POLYGON:
case CELL_GCM_PRIMITIVE_TRIANGLE_FAN:
case CELL_GCM_PRIMITIVE_QUADS:
return false;
}
}
/** We assume that polygon is convex in polygon mode (constraints in OpenGL)
*In such case polygon triangulation equates to triangle fan with arbitrary start vertex
* see http://www.gamedev.net/page/resources/_/technical/graphics-programming-and-theory/polygon-triangulation-r3334
*/
size_t get_index_count(unsigned m_draw_mode, unsigned initial_index_count) noexcept
{
// Index count
@ -196,6 +201,7 @@ size_t get_index_count(unsigned m_draw_mode, unsigned initial_index_count) noexc
switch (m_draw_mode)
{
case CELL_GCM_PRIMITIVE_POLYGON:
case CELL_GCM_PRIMITIVE_TRIANGLE_FAN:
return (initial_index_count - 2) * 3;
case CELL_GCM_PRIMITIVE_QUADS:
@ -221,6 +227,7 @@ void write_index_array_for_non_indexed_non_native_primitive_to_buffer(char* dst,
switch (draw_mode)
{
case CELL_GCM_PRIMITIVE_TRIANGLE_FAN:
case CELL_GCM_PRIMITIVE_POLYGON:
for (unsigned i = 0; i < (count - 2); i++)
{
typedDst[3 * i] = first;

13
rpcs3/Emu/RSX/D3D12/D3D12Formats.cpp
View File

@ -301,10 +301,10 @@ D3D12_PRIMITIVE_TOPOLOGY get_primitive_topology(u8 draw_mode) noexcept
case CELL_GCM_PRIMITIVE_TRIANGLE_STRIP: return D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP;
// Emulated
case CELL_GCM_PRIMITIVE_TRIANGLE_FAN:
case CELL_GCM_PRIMITIVE_QUADS: return D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST;
case CELL_GCM_PRIMITIVE_QUAD_STRIP:
case CELL_GCM_PRIMITIVE_QUADS:
case CELL_GCM_PRIMITIVE_POLYGON: return D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST;
case CELL_GCM_PRIMITIVE_QUAD_STRIP: return D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST;
}
unreachable("Wrong draw mode");
}
@ -318,11 +318,12 @@ D3D12_PRIMITIVE_TOPOLOGY_TYPE get_primitive_topology_type(u8 draw_mode) noexcept
case CELL_GCM_PRIMITIVE_LINE_STRIP: return D3D12_PRIMITIVE_TOPOLOGY_TYPE_LINE;
case CELL_GCM_PRIMITIVE_TRIANGLES:
case CELL_GCM_PRIMITIVE_TRIANGLE_STRIP:
case CELL_GCM_PRIMITIVE_TRIANGLE_FAN: return D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
case CELL_GCM_PRIMITIVE_QUADS:
case CELL_GCM_PRIMITIVE_TRIANGLE_FAN:
case CELL_GCM_PRIMITIVE_POLYGON:
case CELL_GCM_PRIMITIVE_QUADS: return D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
// unsupported
case CELL_GCM_PRIMITIVE_QUAD_STRIP:
case CELL_GCM_PRIMITIVE_POLYGON: return D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
return D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
}
unreachable("Wrong draw mode");
}