e2e7f7ea52
Includes refactoring to reduce the number of bits taken by primitive types, so they more easily fit in the OptiX limit.
134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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CCL_NAMESPACE_BEGIN
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/* Point Primitive
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*
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* Point primitive for rendering point clouds.
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*/
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#ifdef __POINTCLOUD__
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/* Reading attributes on various point elements */
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ccl_device float point_attribute_float(KernelGlobals kg,
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ccl_private const ShaderData *sd,
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const AttributeDescriptor desc,
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ccl_private float *dx,
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ccl_private float *dy)
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{
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# ifdef __RAY_DIFFERENTIALS__
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if (dx)
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*dx = 0.0f;
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if (dy)
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*dy = 0.0f;
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# endif
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if (desc.element == ATTR_ELEMENT_VERTEX) {
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return kernel_tex_fetch(__attributes_float, desc.offset + sd->prim);
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}
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else {
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return 0.0f;
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}
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}
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ccl_device float2 point_attribute_float2(KernelGlobals kg,
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ccl_private const ShaderData *sd,
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const AttributeDescriptor desc,
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ccl_private float2 *dx,
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ccl_private float2 *dy)
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{
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# ifdef __RAY_DIFFERENTIALS__
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if (dx)
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*dx = make_float2(0.0f, 0.0f);
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if (dy)
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*dy = make_float2(0.0f, 0.0f);
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# endif
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if (desc.element == ATTR_ELEMENT_VERTEX) {
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return kernel_tex_fetch(__attributes_float2, desc.offset + sd->prim);
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}
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else {
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return make_float2(0.0f, 0.0f);
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}
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}
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ccl_device float3 point_attribute_float3(KernelGlobals kg,
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ccl_private const ShaderData *sd,
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const AttributeDescriptor desc,
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ccl_private float3 *dx,
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ccl_private float3 *dy)
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{
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# ifdef __RAY_DIFFERENTIALS__
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if (dx)
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*dx = make_float3(0.0f, 0.0f, 0.0f);
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if (dy)
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*dy = make_float3(0.0f, 0.0f, 0.0f);
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# endif
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if (desc.element == ATTR_ELEMENT_VERTEX) {
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return float4_to_float3(kernel_tex_fetch(__attributes_float4, desc.offset + sd->prim));
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}
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else {
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return make_float3(0.0f, 0.0f, 0.0f);
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}
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}
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ccl_device float4 point_attribute_float4(KernelGlobals kg,
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ccl_private const ShaderData *sd,
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const AttributeDescriptor desc,
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ccl_private float4 *dx,
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ccl_private float4 *dy)
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{
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# ifdef __RAY_DIFFERENTIALS__
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if (dx)
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*dx = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
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if (dy)
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*dy = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
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# endif
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if (desc.element == ATTR_ELEMENT_VERTEX) {
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return kernel_tex_fetch(__attributes_float4, desc.offset + sd->prim);
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}
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else {
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return make_float4(0.0f, 0.0f, 0.0f, 0.0f);
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}
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}
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/* Point radius */
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ccl_device float point_radius(KernelGlobals kg, ccl_private const ShaderData *sd)
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{
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if (sd->type & PRIMITIVE_POINT) {
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return kernel_tex_fetch(__points, sd->prim).w;
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}
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return 0.0f;
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}
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/* Point location for motion pass, linear interpolation between keys and
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* ignoring radius because we do the same for the motion keys */
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ccl_device float3 point_motion_center_location(KernelGlobals kg, ccl_private const ShaderData *sd)
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{
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return float4_to_float3(kernel_tex_fetch(__points, sd->prim));
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}
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#endif /* __POINTCLOUD__ */
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CCL_NAMESPACE_END
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