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Added instancing support to Meshes via Mesh:setInstanceCount. Added a new built-in variable to vertex shaders: int love_InstanceID.

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love.graphics.draw(mesh) will draw the mesh instancecount times, using hardware instancing when available. The only way to draw individual instances differently from each other is to use the love_InstanceID variable in a vertex shader.

Added love.graphics.isSupported(“instancing”). Hardware instancing is supported if true, otherwise a (slower) pseudo-instancing fallback is used internally when drawing instanced meshes.
This commit is contained in:
Alex Szpakowski
2014-01-21 06:01:50 -04:00
parent 81d9810ed8
commit 73f1ce0d40
13 changed files with 217 additions and 13 deletions
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src/modules/graphics/opengl/Shader.h
+8
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@@ -138,6 +138,7 @@ public:
/**
* Internal use only.
**/
bool hasVertexAttrib(OpenGL::VertexAttrib attrib) const;
bool hasBuiltinExtern(BuiltinExtern builtin) const;
bool sendBuiltinFloat(BuiltinExtern builtin, int size, const GLfloat *m, int count);
void checkSetScreenParams();
@@ -198,6 +199,9 @@ private:
// Location values for any built-in uniform variables.
GLint builtinUniforms[BUILTIN_MAX_ENUM];
// Location values for any generic vertex attribute variables.
GLint vertexAttributes[OpenGL::ATTRIB_MAX_ENUM];
// Uniform location buffer map
std::map<std::string, Uniform> uniforms;
@@ -220,6 +224,10 @@ private:
static StringMap<ShaderType, TYPE_MAX_ENUM>::Entry typeNameEntries[];
static StringMap<ShaderType, TYPE_MAX_ENUM> typeNames;
// Names for the generic vertex attributes used by love.
static StringMap<OpenGL::VertexAttrib, OpenGL::ATTRIB_MAX_ENUM>::Entry attribNameEntries[];
static StringMap<OpenGL::VertexAttrib, OpenGL::ATTRIB_MAX_ENUM> attribNames;
// Names for the built-in uniform variables.
static StringMap<BuiltinExtern, BUILTIN_MAX_ENUM>::Entry builtinNameEntries[];
static StringMap<BuiltinExtern, BUILTIN_MAX_ENUM> builtinNames;