SIMD update (NEON, SSE3, SSE4) + Features #72
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* optimize dot product
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Some operations (vec4 and mat4) are optimized with NEON, SSE3 and SSE4 intrinsics.
glm_vec4_dotfunction now supports SSE3, SSE4 and NEON. But SSE3 and SSE4 dot is disabled by default. If CGLM_SSE4_DOT macro is enabled and SSE4 is supported then SSE4 version will be used. If CGLM_SSE3_DOT is defined and SSE3 is supported then SSE3 version will be used.New Options:
CGLM_SSE4_DOT: Enable SSE4 optimization for dot productsCGLM_SSE3_DOT: Enable SSE3 optimization for dot productsNew Functions:
void glm_vec4_cubic(float s, vec4 dest)fills vec4 as [s^3, s^2, s, 1.0]float glm_mat4_rmc(vec4 r, mat4 m, vec4 c)multiplies row vector, matrix and column vector and returns scalar. This is good helper to get SMC result easily for curves.float glm_smc(float s, mat4 m, vec4 c)calculates SMC multiplication by usingglm_mat4_rmc()andglm_vec4_cubic()float glm_bezier()cubic bezier equationfloat glm_hermite()cubic hermite equationfloat glm_decasteljau()solve cubic bezier equation using decasteljauNew glmm (SIMD) functions:
glmm_vhadds(v)horizontal add, returns registerglmm_hadd(v)horizontal add, returns scalarglmm_vdots(a, b)dot product, single lane contain dot product to convert result to scalarglmm_vdot(a, b)dot product, all lanes contain dot product to use result with other vector operationsImprovements:
glmm_functions are moved to platform specific headers.