[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [39879] branches/cycles/intern/cycles: Cycles: optimizations for instances in scene updates before render starts,
Brecht Van Lommel
brechtvanlommel at pandora.be
Fri Sep 2 18:15:18 CEST 2011
Revision: 39879
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=39879
Author: blendix
Date: 2011-09-02 16:15:18 +0000 (Fri, 02 Sep 2011)
Log Message:
-----------
Cycles: optimizations for instances in scene updates before render starts,
should load a non-trivial mesh instanced many times quite a bit faster now.
Modified Paths:
--------------
branches/cycles/intern/cycles/device/device_opencl.cpp
branches/cycles/intern/cycles/render/light.cpp
branches/cycles/intern/cycles/render/object.cpp
branches/cycles/intern/cycles/util/util_transform.h
Modified: branches/cycles/intern/cycles/device/device_opencl.cpp
===================================================================
--- branches/cycles/intern/cycles/device/device_opencl.cpp 2011-09-02 15:19:30 UTC (rev 39878)
+++ branches/cycles/intern/cycles/device/device_opencl.cpp 2011-09-02 16:15:18 UTC (rev 39879)
@@ -217,8 +217,13 @@
if(!opencl_version_check())
return false;
+ /* nvidia opencl cache doesn't not work correct with includes, so force recompile */
+ static double recompile_trick = 0.0;
+ if(recompile_trick == 0.0)
+ recompile_trick = time_dt();
+
/* compile source */
- string source = string_printf("#include \"kernel.cl\" // %lf\n", time_dt());
+ string source = string_printf("#include \"kernel.cl\" // %lf\n", recompile_trick);
size_t source_len = source.size();
const char *source_str = source.c_str();
Modified: branches/cycles/intern/cycles/render/light.cpp
===================================================================
--- branches/cycles/intern/cycles/render/light.cpp 2011-09-02 15:19:30 UTC (rev 39878)
+++ branches/cycles/intern/cycles/render/light.cpp 2011-09-02 16:15:18 UTC (rev 39879)
@@ -61,12 +61,24 @@
foreach(Object *object, scene->objects) {
Mesh *mesh = object->mesh;
+ bool have_emission = false;
- for(size_t i = 0; i < mesh->triangles.size(); i++) {
- Shader *shader = scene->shaders[mesh->shader[i]];
+ /* skip if we have no emission shaders */
+ foreach(uint sindex, mesh->used_shaders) {
+ if(scene->shaders[sindex]->has_surface_emission) {
+ have_emission = true;
+ break;
+ }
+ }
- if(shader->has_surface_emission)
- num_triangles++;
+ /* count triangles */
+ if(have_emission) {
+ for(size_t i = 0; i < mesh->triangles.size(); i++) {
+ Shader *shader = scene->shaders[mesh->shader[i]];
+
+ if(shader->has_surface_emission)
+ num_triangles++;
+ }
}
}
@@ -82,25 +94,38 @@
foreach(Object *object, scene->objects) {
Mesh *mesh = object->mesh;
- Transform tfm = object->tfm;
- int object_id = (mesh->transform_applied)? -j-1: j;
+ bool have_emission = false;
- for(size_t i = 0; i < mesh->triangles.size(); i++) {
- Shader *shader = scene->shaders[mesh->shader[i]];
+ /* skip if we have no emission shaders */
+ foreach(uint sindex, mesh->used_shaders) {
+ if(scene->shaders[sindex]->has_surface_emission) {
+ have_emission = true;
+ break;
+ }
+ }
- if(shader->has_surface_emission) {
- distribution[offset].x = totarea;
- distribution[offset].y = __int_as_float(i + mesh->tri_offset);
- distribution[offset].z = 1.0f;
- distribution[offset].w = __int_as_float(object_id);
- offset++;
+ /* sum area */
+ if(have_emission) {
+ Transform tfm = object->tfm;
+ int object_id = (mesh->transform_applied)? -j-1: j;
- Mesh::Triangle t = mesh->triangles[i];
- float3 p1 = transform(&tfm, mesh->verts[t.v[0]]);
- float3 p2 = transform(&tfm, mesh->verts[t.v[1]]);
- float3 p3 = transform(&tfm, mesh->verts[t.v[2]]);
+ for(size_t i = 0; i < mesh->triangles.size(); i++) {
+ Shader *shader = scene->shaders[mesh->shader[i]];
- totarea += triangle_area(p1, p2, p3);
+ if(shader->has_surface_emission) {
+ distribution[offset].x = totarea;
+ distribution[offset].y = __int_as_float(i + mesh->tri_offset);
+ distribution[offset].z = 1.0f;
+ distribution[offset].w = __int_as_float(object_id);
+ offset++;
+
+ Mesh::Triangle t = mesh->triangles[i];
+ float3 p1 = transform(&tfm, mesh->verts[t.v[0]]);
+ float3 p2 = transform(&tfm, mesh->verts[t.v[1]]);
+ float3 p3 = transform(&tfm, mesh->verts[t.v[2]]);
+
+ totarea += triangle_area(p1, p2, p3);
+ }
}
}
Modified: branches/cycles/intern/cycles/render/object.cpp
===================================================================
--- branches/cycles/intern/cycles/render/object.cpp 2011-09-02 15:19:30 UTC (rev 39878)
+++ branches/cycles/intern/cycles/render/object.cpp 2011-09-02 16:15:18 UTC (rev 39879)
@@ -22,6 +22,7 @@
#include "scene.h"
#include "util_foreach.h"
+#include "util_map.h"
#include "util_progress.h"
CCL_NAMESPACE_BEGIN
@@ -103,6 +104,7 @@
{
float4 *objects = dscene->objects.resize(OBJECT_SIZE*scene->objects.size());
int i = 0;
+ map<Mesh*, float> surface_area_map;
foreach(Object *ob, scene->objects) {
Mesh *mesh = ob->mesh;
@@ -112,25 +114,48 @@
Transform itfm = transform_inverse(tfm);
Transform ntfm = transform_transpose(itfm);
- /* compute surface area */
+ /* compute surface area. for uniform scale we can do avoid the many
+ transform calls and share computation for instances */
/* todo: correct for displacement, and move to a better place */
- float surfacearea = 0.0f;
+ float uniform_scale;
+ float surface_area = 0.0f;
+
+ if(transform_uniform_scale(tfm, uniform_scale)) {
+ map<Mesh*, float>::iterator it = surface_area_map.find(mesh);
- foreach(Mesh::Triangle& t, mesh->triangles) {
- float3 p1 = transform(&tfm, mesh->verts[t.v[0]]);
- float3 p2 = transform(&tfm, mesh->verts[t.v[1]]);
- float3 p3 = transform(&tfm, mesh->verts[t.v[2]]);
+ if(it == surface_area_map.end()) {
+ foreach(Mesh::Triangle& t, mesh->triangles) {
+ float3 p1 = mesh->verts[t.v[0]];
+ float3 p2 = mesh->verts[t.v[1]];
+ float3 p3 = mesh->verts[t.v[2]];
- surfacearea += triangle_area(p1, p2, p3);
+ surface_area += triangle_area(p1, p2, p3);
+ }
+
+ surface_area_map[mesh] = surface_area;
+ }
+ else
+ surface_area = it->second;
+
+ surface_area *= uniform_scale;
}
+ else {
+ foreach(Mesh::Triangle& t, mesh->triangles) {
+ float3 p1 = transform(&tfm, mesh->verts[t.v[0]]);
+ float3 p2 = transform(&tfm, mesh->verts[t.v[1]]);
+ float3 p3 = transform(&tfm, mesh->verts[t.v[2]]);
+ surface_area += triangle_area(p1, p2, p3);
+ }
+ }
+
/* pack in texture */
int offset = i*OBJECT_SIZE;
memcpy(&objects[offset], &tfm, sizeof(float4)*4);
memcpy(&objects[offset+4], &itfm, sizeof(float4)*4);
memcpy(&objects[offset+8], &ntfm, sizeof(float4)*4);
- objects[offset+12] = make_float4(surfacearea, 0.0f, 0.0f, 0.0f);
+ objects[offset+12] = make_float4(surface_area, 0.0f, 0.0f, 0.0f);
i++;
Modified: branches/cycles/intern/cycles/util/util_transform.h
===================================================================
--- branches/cycles/intern/cycles/util/util_transform.h 2011-09-02 15:19:30 UTC (rev 39878)
+++ branches/cycles/intern/cycles/util/util_transform.h 2011-09-02 16:15:18 UTC (rev 39879)
@@ -205,6 +205,30 @@
Transform transform_inverse(const Transform& a);
+__device_inline bool transform_uniform_scale(const Transform& tfm, float& scale)
+{
+ /* the epsilon here is quite arbitrary, but this function is only used for
+ surface area and bump, where we except it to not be so sensitive */
+ Transform ttfm = transform_transpose(tfm);
+ float eps = 1e-7f;
+
+ float sx = len(float4_to_float3(tfm.x));
+ float sy = len(float4_to_float3(tfm.y));
+ float sz = len(float4_to_float3(tfm.z));
+ float stx = len(float4_to_float3(ttfm.x));
+ float sty = len(float4_to_float3(ttfm.y));
+ float stz = len(float4_to_float3(ttfm.z));
+
+ if(fabsf(sx - sy) < eps && fabsf(sx - sz) < eps &&
+ fabsf(sx - stx) < eps && fabsf(sx - sty) < eps &&
+ fabsf(sx - stz) < eps) {
+ scale = sx;
+ return true;
+ }
+
+ return false;
+}
+
#endif
CCL_NAMESPACE_END
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