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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/opengl/Canvas.cpp
+14
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@@ -68,9 +68,16 @@ static GLenum createFBO(GLuint &framebuffer, TextureType texType, PixelFormat fo
if (isPixelFormatDepthStencil(format))
{
bool hadDepthWrites = gl.hasDepthWrites();
if (!hadDepthWrites) // glDepthMask also affects glClear.
gl.setDepthWrites(true);
gl.clearDepth(1.0);
glClearStencil(0);
glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
if (!hadDepthWrites)
gl.setDepthWrites(hadDepthWrites);
}
else
{
@@ -128,9 +135,16 @@ static bool createRenderbuffer(int width, int height, int &samples, PixelFormat
{
if (isPixelFormatDepthStencil(pixelformat))
{
bool hadDepthWrites = gl.hasDepthWrites();
if (!hadDepthWrites) // glDepthMask also affects glClear.
gl.setDepthWrites(true);
gl.clearDepth(1.0);
glClearStencil(0);
glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
if (!hadDepthWrites)
gl.setDepthWrites(hadDepthWrites);
}
else
{