diff options
Diffstat (limited to 'source/blender/compositor/realtime_compositor/algorithms')
2 files changed, 149 insertions, 0 deletions
diff --git a/source/blender/compositor/realtime_compositor/algorithms/COM_algorithm_parallel_reduction.hh b/source/blender/compositor/realtime_compositor/algorithms/COM_algorithm_parallel_reduction.hh index 9d0851eff84..f6d479f9bbe 100644 --- a/source/blender/compositor/realtime_compositor/algorithms/COM_algorithm_parallel_reduction.hh +++ b/source/blender/compositor/realtime_compositor/algorithms/COM_algorithm_parallel_reduction.hh @@ -27,6 +27,13 @@ float sum_blue(Context &context, GPUTexture *texture); * coefficients to compute the luminance. */ float sum_luminance(Context &context, GPUTexture *texture, float3 luminance_coefficients); +/* Computes the sum of the logarithm of the luminance of all pixels in the given texture, using the + * given luminance coefficients to compute the luminance. */ +float sum_log_luminance(Context &context, GPUTexture *texture, float3 luminance_coefficients); + +/* Computes the sum of the colors of all pixels in the given texture. */ +float4 sum_color(Context &context, GPUTexture *texture); + /* -------------------------------------------------------------------- * Sum Of Squared Difference Reductions. */ @@ -55,4 +62,42 @@ float sum_luminance_squared_difference(Context &context, float3 luminance_coefficients, float subtrahend); +/* -------------------------------------------------------------------- + * Maximum Reductions. + */ + +/* Computes the maximum luminance of all pixels in the given texture, using the given luminance + * coefficients to compute the luminance. */ +float maximum_luminance(Context &context, GPUTexture *texture, float3 luminance_coefficients); + +/* Computes the maximum float of all pixels in the given float texture, limited to the given range. + * Values outside of the given range are ignored. If non of the pixel values are in the range, the + * lower bound of the range is returned. For instance, if the given range is [-10, 10] and the + * image contains the values {2, 5, 11}, the maximum will be 5, since 11 is outside of the range. + * This is particularly useful for Z Depth normalization, since Z Depth can contain near infinite + * values, so enforcing an upper bound is beneficial. */ +float maximum_float_in_range(Context &context, + GPUTexture *texture, + float lower_bound, + float upper_bound); + +/* -------------------------------------------------------------------- + * Minimum Reductions. + */ + +/* Computes the minimum luminance of all pixels in the given texture, using the given luminance + * coefficients to compute the luminance. */ +float minimum_luminance(Context &context, GPUTexture *texture, float3 luminance_coefficients); + +/* Computes the minimum float of all pixels in the given float texture, limited to the given range. + * Values outside of the given range are ignored. If non of the pixel values are in the range, the + * upper bound of the range is returned. For instance, if the given range is [-10, 10] and the + * image contains the values {-11, 2, 5}, the minimum will be 2, since -11 is outside of the range. + * This is particularly useful for Z Depth normalization, since Z Depth can contain near infinite + * values, so enforcing a lower bound is beneficial. */ +float minimum_float_in_range(Context &context, + GPUTexture *texture, + float lower_bound, + float upper_bound); + } // namespace blender::realtime_compositor diff --git a/source/blender/compositor/realtime_compositor/algorithms/intern/algorithm_parallel_reduction.cc b/source/blender/compositor/realtime_compositor/algorithms/intern/algorithm_parallel_reduction.cc index 3266ccd14eb..9672431992d 100644 --- a/source/blender/compositor/realtime_compositor/algorithms/intern/algorithm_parallel_reduction.cc +++ b/source/blender/compositor/realtime_compositor/algorithms/intern/algorithm_parallel_reduction.cc @@ -134,6 +134,34 @@ float sum_luminance(Context &context, GPUTexture *texture, float3 luminance_coef return sum; } +float sum_log_luminance(Context &context, GPUTexture *texture, float3 luminance_coefficients) +{ + GPUShader *shader = context.shader_manager().get("compositor_sum_log_luminance"); + GPU_shader_bind(shader); + + GPU_shader_uniform_3fv(shader, "luminance_coefficients", luminance_coefficients); + + float *reduced_value = parallel_reduction_dispatch(context, texture, shader, GPU_R32F); + const float sum = *reduced_value; + MEM_freeN(reduced_value); + GPU_shader_unbind(); + + return sum; +} + +float4 sum_color(Context &context, GPUTexture *texture) +{ + GPUShader *shader = context.shader_manager().get("compositor_sum_color"); + GPU_shader_bind(shader); + + float *reduced_value = parallel_reduction_dispatch(context, texture, shader, GPU_RGBA32F); + const float4 sum = float4(reduced_value); + MEM_freeN(reduced_value); + GPU_shader_unbind(); + + return sum; +} + /* -------------------------------------------------------------------- * Sum Of Squared Difference Reductions. */ @@ -202,4 +230,80 @@ float sum_luminance_squared_difference(Context &context, return sum; } +/* -------------------------------------------------------------------- + * Maximum Reductions. + */ + +float maximum_luminance(Context &context, GPUTexture *texture, float3 luminance_coefficients) +{ + GPUShader *shader = context.shader_manager().get("compositor_maximum_luminance"); + GPU_shader_bind(shader); + + GPU_shader_uniform_3fv(shader, "luminance_coefficients", luminance_coefficients); + + float *reduced_value = parallel_reduction_dispatch(context, texture, shader, GPU_R32F); + const float maximum = *reduced_value; + MEM_freeN(reduced_value); + GPU_shader_unbind(); + + return maximum; +} + +float maximum_float_in_range(Context &context, + GPUTexture *texture, + float lower_bound, + float upper_bound) +{ + GPUShader *shader = context.shader_manager().get("compositor_maximum_float_in_range"); + GPU_shader_bind(shader); + + GPU_shader_uniform_1f(shader, "lower_bound", lower_bound); + GPU_shader_uniform_1f(shader, "upper_bound", upper_bound); + + float *reduced_value = parallel_reduction_dispatch(context, texture, shader, GPU_R32F); + const float maximum = *reduced_value; + MEM_freeN(reduced_value); + GPU_shader_unbind(); + + return maximum; +} + +/* -------------------------------------------------------------------- + * Minimum Reductions. + */ + +float minimum_luminance(Context &context, GPUTexture *texture, float3 luminance_coefficients) +{ + GPUShader *shader = context.shader_manager().get("compositor_minimum_luminance"); + GPU_shader_bind(shader); + + GPU_shader_uniform_3fv(shader, "luminance_coefficients", luminance_coefficients); + + float *reduced_value = parallel_reduction_dispatch(context, texture, shader, GPU_R32F); + const float minimum = *reduced_value; + MEM_freeN(reduced_value); + GPU_shader_unbind(); + + return minimum; +} + +float minimum_float_in_range(Context &context, + GPUTexture *texture, + float lower_bound, + float upper_bound) +{ + GPUShader *shader = context.shader_manager().get("compositor_minimum_float_in_range"); + GPU_shader_bind(shader); + + GPU_shader_uniform_1f(shader, "lower_bound", lower_bound); + GPU_shader_uniform_1f(shader, "upper_bound", upper_bound); + + float *reduced_value = parallel_reduction_dispatch(context, texture, shader, GPU_R32F); + const float minimum = *reduced_value; + MEM_freeN(reduced_value); + GPU_shader_unbind(); + + return minimum; +} + } // namespace blender::realtime_compositor |