Added frustum plane extraction and sphere culling code. (cbed7524) · Commits · e / os / android_frameworks_base

libs/rs/rsProgramVertex.cpp

+6 −0

Original line number	Diff line number	Diff line
		@@ -318,6 +318,12 @@ void ProgramVertex::setTextureMatrix(const rsc_Matrix *m) const
		mDirty = true;
		}

		void ProgramVertex::getProjectionMatrix(rsc_Matrix *m) const
		{
		float f = static_cast<float >(mConstants[0]->getPtr());
		memcpy(m, &f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], sizeof(rsc_Matrix));
		}

		void ProgramVertex::transformToScreen(const Context rsc, float v4out, const float *v3in) const
		{
		float f = static_cast<float >(mConstants[0]->getPtr());

libs/rs/rsProgramVertex.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,7 @@ public:
		void addLight(const Light *);

		void setProjectionMatrix(const rsc_Matrix *) const;
		void getProjectionMatrix(rsc_Matrix *) const;
		void setModelviewMatrix(const rsc_Matrix *) const;
		void setTextureMatrix(const rsc_Matrix *) const;

libs/rs/rsScriptC_LibGL.cpp

+8 −0

Original line number	Diff line number	Diff line
		@@ -117,6 +117,12 @@ static void SC_pfConstantColor(RsProgramFragment vpf, float r, float g, float b,
		pf->setConstantColor(r, g, b, a);
		}

		static void SC_vpGetProjectionMatrix(rsc_Matrix *m)
		{
		GET_TLS();
		rsc->getVertex()->getProjectionMatrix(m);
		}


		//////////////////////////////////////////////////////////////////////////////
		// Drawing
		@@ -387,6 +393,8 @@ static ScriptCState::SymbolTable_t gSyms[] = {
		{ "_Z31rsgProgramVertexLoadModelMatrixPK12rs_matrix4x4", (void *)&SC_vpLoadModelMatrix },
		{ "_Z33rsgProgramVertexLoadTextureMatrixPK12rs_matrix4x4", (void *)&SC_vpLoadTextureMatrix },

		{ "_Z35rsgProgramVertexGetProjectionMatrixP12rs_matrix4x4", (void *)&SC_vpGetProjectionMatrix },

		{ "_Z31rsgProgramFragmentConstantColor19rs_program_fragmentffff", (void *)&SC_pfConstantColor },

		{ "_Z11rsgGetWidthv", (void *)&SC_getWidth },

libs/rs/scriptc/rs_core.rsh

+86 −0

Original line number	Diff line number	Diff line
		@@ -767,6 +767,92 @@ static void rsQuaternionGetMatrixUnit(rs_matrix4x4 m, const rs_quaternion q) {
		m->m[15] = 1.0f;
		}

		/////////////////////////////////////////////////////
		// utility funcs
		/////////////////////////////////////////////////////
		void __attribute__((overloadable))
		rsExtractFrustumPlanes(const rs_matrix4x4 *modelViewProj,
		float4 left, float4 right,
		float4 top, float4 bottom,
		float4 near, float4 far) {
		// x y z w = a b c d in the plane equation
		left->x = modelViewProj->m[3] + modelViewProj->m[0];
		left->y = modelViewProj->m[7] + modelViewProj->m[4];
		left->z = modelViewProj->m[11] + modelViewProj->m[8];
		left->w = modelViewProj->m[15] + modelViewProj->m[12];

		right->x = modelViewProj->m[3] - modelViewProj->m[0];
		right->y = modelViewProj->m[7] - modelViewProj->m[4];
		right->z = modelViewProj->m[11] - modelViewProj->m[8];
		right->w = modelViewProj->m[15] - modelViewProj->m[12];

		top->x = modelViewProj->m[3] - modelViewProj->m[1];
		top->y = modelViewProj->m[7] - modelViewProj->m[5];
		top->z = modelViewProj->m[11] - modelViewProj->m[9];
		top->w = modelViewProj->m[15] - modelViewProj->m[13];

		bottom->x = modelViewProj->m[3] + modelViewProj->m[1];
		bottom->y = modelViewProj->m[7] + modelViewProj->m[5];
		bottom->z = modelViewProj->m[11] + modelViewProj->m[9];
		bottom->w = modelViewProj->m[15] + modelViewProj->m[13];

		near->x = modelViewProj->m[3] + modelViewProj->m[2];
		near->y = modelViewProj->m[7] + modelViewProj->m[6];
		near->z = modelViewProj->m[11] + modelViewProj->m[10];
		near->w = modelViewProj->m[15] + modelViewProj->m[14];

		far->x = modelViewProj->m[3] - modelViewProj->m[2];
		far->y = modelViewProj->m[7] - modelViewProj->m[6];
		far->z = modelViewProj->m[11] - modelViewProj->m[10];
		far->w = modelViewProj->m[15] - modelViewProj->m[14];

		float len = length(left->xyz);
		*left /= len;
		len = length(right->xyz);
		*right /= len;
		len = length(top->xyz);
		*top /= len;
		len = length(bottom->xyz);
		*bottom /= len;
		len = length(near->xyz);
		*near /= len;
		len = length(far->xyz);
		*far /= len;
		}

		bool __attribute__((overloadable))
		rsIsSphereInFrustum(float4 *sphere,
		float4 left, float4 right,
		float4 top, float4 bottom,
		float4 near, float4 far) {

		float distToCenter = dot(left->xyz, sphere->xyz) + left->w;
		if(distToCenter < -sphere->w) {
		return false;
		}
		distToCenter = dot(right->xyz, sphere->xyz) + right->w;
		if(distToCenter < -sphere->w) {
		return false;
		}
		distToCenter = dot(top->xyz, sphere->xyz) + top->w;
		if(distToCenter < -sphere->w) {
		return false;
		}
		distToCenter = dot(bottom->xyz, sphere->xyz) + bottom->w;
		if(distToCenter < -sphere->w) {
		return false;
		}
		distToCenter = dot(near->xyz, sphere->xyz) + near->w;
		if(distToCenter < -sphere->w) {
		return false;
		}
		distToCenter = dot(far->xyz, sphere->xyz) + far->w;
		if(distToCenter < -sphere->w) {
		return false;
		}
		return true;
		}


		/////////////////////////////////////////////////////
		// int ops

libs/rs/scriptc/rs_graphics.rsh

+3 −2

Original line number	Diff line number	Diff line
		@@ -26,6 +26,9 @@ extern void __attribute__((overloadable))
		extern void __attribute__((overloadable))
		rsgProgramVertexLoadTextureMatrix(const rs_matrix4x4 *);

		extern void __attribute__((overloadable))
		rsgProgramVertexGetProjectionMatrix(rs_matrix4x4 *);

		extern void __attribute__((overloadable))
		rsgProgramFragmentConstantColor(rs_program_fragment, float, float, float, float);

		@@ -92,8 +95,6 @@ rsgMeshComputeBoundingBox(rs_mesh mesh, float3 bBoxMin, float3 bBoxMax) {
		bBoxMax->z = z2;
		}



		///////////////////////////////////////////////////////
		// misc