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Cycles: avoid using float3 in kernel constant memory, just so we're sure alignment

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is working compatible between cpu and gpu.
This commit is contained in:
Brecht Van Lommel
2011-12-20 12:25:45 +00:00
parent 72d2d05770
commit 40259cfe7b
5 changed files with 18 additions and 20 deletions
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8
intern/cycles/kernel/kernel_camera.h
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@@ -74,8 +74,8 @@ __device void camera_sample_perspective(KernelGlobals *kg, float raster_x, float
ray->dP.dx = make_float3(0.0f, 0.0f, 0.0f);
ray->dP.dy = make_float3(0.0f, 0.0f, 0.0f);
ray->dD.dx = normalize(Ddiff + kernel_data.cam.dx) - normalize(Ddiff);
ray->dD.dy = normalize(Ddiff + kernel_data.cam.dy) - normalize(Ddiff);
ray->dD.dx = normalize(Ddiff + float4_to_float3(kernel_data.cam.dx)) - normalize(Ddiff);
ray->dD.dy = normalize(Ddiff + float4_to_float3(kernel_data.cam.dy)) - normalize(Ddiff);
#endif
#ifdef __CAMERA_CLIPPING__
@@ -107,8 +107,8 @@ __device void camera_sample_orthographic(KernelGlobals *kg, float raster_x, floa
#ifdef __RAY_DIFFERENTIALS__
/* ray differential */
ray->dP.dx = kernel_data.cam.dx;
ray->dP.dy = kernel_data.cam.dy;
ray->dP.dx = float4_to_float3(kernel_data.cam.dx);
ray->dP.dy = float4_to_float3(kernel_data.cam.dy);
ray->dD.dx = make_float3(0.0f, 0.0f, 0.0f);
ray->dD.dy = make_float3(0.0f, 0.0f, 0.0f);

20
intern/cycles/kernel/kernel_types.h
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@@ -295,7 +295,11 @@ typedef struct ShaderData {
#endif
} ShaderData;
/* Constrant Kernel Data */
/* Constrant Kernel Data
*
* These structs are passed from CPU to various devices, and the struct layout
* must match exactly. Structs are padded to ensure 16 byte alignment, and we
* do not use float3 because its size may not be the same on all devices. */
typedef struct KernelCamera {
/* type */
@@ -307,14 +311,8 @@ typedef struct KernelCamera {
Transform rastertocamera;
/* differentials */
float3 dx;
#ifndef WITH_OPENCL
float pad1;
#endif
float3 dy;
#ifndef WITH_OPENCL
float pad2;
#endif
float4 dx;
float4 dy;
/* depth of field */
float aperturesize;
@@ -355,10 +353,6 @@ typedef struct KernelBackground {
typedef struct KernelSunSky {
/* sun direction in spherical and cartesian */
float theta, phi, pad3, pad4;
float3 dir;
#ifndef WITH_OPENCL
float pad;
#endif
/* perez function parameters */
float zenith_Y, zenith_x, zenith_y, pad2;

4
intern/cycles/render/camera.cpp
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@@ -150,8 +150,8 @@ void Camera::device_update(Device *device, DeviceScene *dscene)
kcam->ortho = ortho;
/* store differentials */
kcam->dx = dx;
kcam->dy = dy;
kcam->dx = float3_to_float4(dx);
kcam->dy = float3_to_float4(dy);
/* clipping */
kcam->nearclip = nearclip;

1
intern/cycles/render/nodes.cpp
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@@ -273,7 +273,6 @@ static void sky_texture_precompute(KernelSunSky *ksunsky, float3 dir, float turb
ksunsky->theta = theta;
ksunsky->phi = phi;
ksunsky->dir = dir;
float theta2 = theta*theta;
float theta3 = theta*theta*theta;

5
intern/cycles/util/util_math.h
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@@ -536,6 +536,11 @@ __device_inline float3 float4_to_float3(const float4 a)
return make_float3(a.x, a.y, a.z);
}
__device_inline float4 float3_to_float4(const float3 a)
{
return make_float4(a.x, a.y, a.z, 1.0f);
}
#ifndef __KERNEL_GPU__
__device_inline void print_float3(const char *label, const float3& a)