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Add (low level) functionality to allow rendering 3D Meshes.

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- Add love.graphics.setDepthMode(testcomparison, enablewrites).
- Add love.graphics.setMeshCullMode.
- Add love.graphics.setFrontFaceWinding.

Depth testing and depth writes require a depth buffer to work. The mesh cull mode controls whether front/back faces of a mesh are culled. The front face winding determines whether a clockwise or counterclockwise-oriented face in a mesh is considered front facing.

--HG--
branch : minor
This commit is contained in:
Alex Szpakowski
2017-12-09 23:34:08 -04:00
parent 915e6c8eec
commit 7354de2059
21 changed files with 572 additions and 113 deletions
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src/modules/graphics/Graphics.cpp
+62 -5
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@@ -374,6 +374,10 @@ void Graphics::restoreState(const DisplayState &s)
setScissor();
setStencilTest(s.stencilCompare, s.stencilTestValue);
setDepthMode(s.depthTest, s.depthWrite);
setMeshCullMode(s.meshCullMode);
setFrontFaceWinding(s.winding);
setFont(s.font.get());
setShader(s.shader.get());
@@ -417,6 +421,14 @@ void Graphics::restoreStateChecked(const DisplayState &s)
if (s.stencilCompare != cur.stencilCompare || s.stencilTestValue != cur.stencilTestValue)
setStencilTest(s.stencilCompare, s.stencilTestValue);
if (s.depthTest != cur.depthTest || s.depthWrite != cur.depthWrite)
setDepthMode(s.depthTest, s.depthWrite);
setMeshCullMode(s.meshCullMode);
if (s.winding != cur.winding)
setFrontFaceWinding(s.winding);
setFont(s.font.get());
setShader(s.shader.get());
@@ -788,13 +800,46 @@ bool Graphics::getScissor(Rect &rect) const
return state.scissor;
}
void Graphics::getStencilTest(CompareMode &compare, int &value)
void Graphics::setStencilTest()
{
setStencilTest(COMPARE_ALWAYS, 0);
}
void Graphics::getStencilTest(CompareMode &compare, int &value) const
{
const DisplayState &state = states.back();
compare = state.stencilCompare;
value = state.stencilTestValue;
}
void Graphics::setDepthMode()
{
setDepthMode(COMPARE_ALWAYS, false);
}
void Graphics::getDepthMode(CompareMode &compare, bool &write) const
{
const DisplayState &state = states.back();
compare = state.depthTest;
write = state.depthWrite;
}
void Graphics::setMeshCullMode(CullMode cull)
{
// Handled inside the draw() graphics API implementations.
states.back().meshCullMode = cull;
}
CullMode Graphics::getMeshCullMode() const
{
return states.back().meshCullMode;
}
vertex::Winding Graphics::getFrontFaceWinding() const
{
return states.back().winding;
}
Graphics::ColorMask Graphics::getColorMask() const
{
return states.back().colorMask;
@@ -1051,14 +1096,26 @@ void Graphics::flushStreamDraws()
if (sbstate.indexCount > 0)
{
usedsizes[2] = sizeof(uint16) * sbstate.indexCount;
size_t offset = sbstate.indexBuffer->unmap(usedsizes[2]);
DrawIndexedCommand cmd(&attributes, &buffers, sbstate.indexBuffer);
cmd.primitiveType = sbstate.primitiveMode;
cmd.indexCount = sbstate.indexCount;
cmd.indexType = INDEX_UINT16;
cmd.indexBufferOffset = sbstate.indexBuffer->unmap(usedsizes[2]);
cmd.texture = sbstate.texture;
draw(cmd);
sbstate.indexBufferMap = StreamBuffer::MapInfo();
drawIndexed(sbstate.primitiveMode, sbstate.indexCount, 1, INDEX_UINT16, sbstate.indexBuffer, offset, attributes, buffers, sbstate.texture);
}
else
draw(sbstate.primitiveMode, 0, sbstate.vertexCount, 1, attributes, buffers, sbstate.texture);
{
DrawCommand cmd(&attributes, &buffers);
cmd.primitiveType = sbstate.primitiveMode;
cmd.vertexStart = 0;
cmd.vertexCount = sbstate.vertexCount;
cmd.texture = sbstate.texture;
draw(cmd);
}
for (int i = 0; i < 2; i++)
{