1 files changed, 50 insertions, 0 deletions
diff --git a/Runtime/GfxDevice/opengles30/GpuProgramsGLES30_UniformCache.h b/Runtime/GfxDevice/opengles30/GpuProgramsGLES30_UniformCache.h
new file mode 100644
index 0000000..aa0e74b
--- /dev/null
+++ b/Runtime/GfxDevice/opengles30/GpuProgramsGLES30_UniformCache.h
@@ -0,0 +1,50 @@
+#pragma once
+
+#if !GFX_SUPPORTS_OPENGLES30
+#error "Should not include GpuProgramsGLES30 on this platform"
+#endif
+
+#include "Runtime/Utilities/LogAssert.h"
+#include <string.h>
+
+class GpuProgramParameters;
+
+struct
+UniformCacheGLES30
+{
+	// for gles we must set values per-uniform (not per-registers like in dx)
+	// so there is no real need for dirty tracking.
+	// TODO: do unified impl with dirty tracking if/when we do "everything is an array" in gles
+	float*		uniform;
+	unsigned	count;
+
+	UniformCacheGLES30() : uniform(0), count(0)	{}
+
+	// we will pre-alloc memory. Fog params are handled differently (not added to gpu params).
+	// TODO: make it more general, int* perhaps, or some struct
+	void		Create(const GpuProgramParameters* params, int fogParamsIndex, int fogColorIndex);
+	void		Destroy();
+
+	// returns true if you need to update for real
+	bool		UpdateUniform(int index, const float* val, unsigned floatCount);
+};
+
+void	CachedUniform1(UniformCacheGLES30* cache, int index, const float* val);
+void	CachedUniform2(UniformCacheGLES30* cache, int index, const float* val);
+void	CachedUniform3(UniformCacheGLES30* cache, int index, const float* val);
+void	CachedUniform4(UniformCacheGLES30* cache, int index, const float* val);
+
+
+inline bool UniformCacheGLES30::UpdateUniform(int index, const float* val, unsigned floatCount)
+{
+	Assert(index < count);
+	const unsigned mem_sz = floatCount*sizeof(float);
+
+	float* target = uniform + 4*index;
+	if(::memcmp(target, val, mem_sz))
+	{
+		::memcpy(target, val, mem_sz);
+		return true;
+	}
+	return false;
+}