forked from bartvdbraak/blender
Cycles: Add single channel texture support for OpenCL.
This way OpenCL devices can also benefit from a smaller memory footprint, when using e.g. bumpmaps (greyscale, 1 channel). Additional target for my GSoC 2016.
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5c0a67b325
@ -495,6 +495,7 @@ typedef texture<uint> texture_uint;
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typedef texture<int> texture_int;
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typedef texture<uint4> texture_uint4;
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typedef texture<uchar4> texture_uchar4;
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typedef texture<uchar> texture_uchar;
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typedef texture_image<float> texture_image_float;
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typedef texture_image<uchar> texture_image_uchar;
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typedef texture_image<half> texture_image_half;
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@ -188,6 +188,8 @@ KERNEL_TEX(uint, texture_uint, __bindless_mapping)
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/* packed image (opencl) */
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KERNEL_TEX(uchar4, texture_uchar4, __tex_image_byte4_packed)
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KERNEL_TEX(float4, texture_float4, __tex_image_float4_packed)
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KERNEL_TEX(uchar, texture_uchar, __tex_image_byte_packed)
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KERNEL_TEX(float, texture_float, __tex_image_float_packed)
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KERNEL_TEX(uint4, texture_uint4, __tex_image_packed_info)
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#undef KERNEL_TEX
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@ -36,13 +36,26 @@ CCL_NAMESPACE_BEGIN
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ccl_device_inline float4 svm_image_texture_read(KernelGlobals *kg, int id, int offset)
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{
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if(id >= TEX_NUM_FLOAT4_IMAGES) {
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/* Float4 */
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if(id < TEX_START_BYTE4_OPENCL) {
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return kernel_tex_fetch(__tex_image_float4_packed, offset);
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}
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/* Byte4 */
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else if(id < TEX_START_FLOAT_OPENCL) {
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uchar4 r = kernel_tex_fetch(__tex_image_byte4_packed, offset);
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float f = 1.0f/255.0f;
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return make_float4(r.x*f, r.y*f, r.z*f, r.w*f);
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}
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/* Float */
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else if(id < TEX_START_BYTE_OPENCL) {
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float f = kernel_tex_fetch(__tex_image_float_packed, offset);
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return make_float4(f, f, f, 1.0f);
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}
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/* Byte */
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else {
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return kernel_tex_fetch(__tex_image_float4_packed, offset);
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uchar r = kernel_tex_fetch(__tex_image_byte_packed, offset);
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float f = r * (1.0f/255.0f);
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return make_float4(f, f, f, 1.0f);
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}
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}
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@ -284,7 +284,7 @@ int ImageManager::add_image(const string& filename,
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if(type == IMAGE_DATA_TYPE_FLOAT || type == IMAGE_DATA_TYPE_FLOAT4)
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is_float = true;
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/* No single channel and half textures on CUDA (Fermi) and OpenCL, use available slots */
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/* No single channel and half textures on CUDA (Fermi) and no half on OpenCL, use available slots */
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if((type == IMAGE_DATA_TYPE_FLOAT ||
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type == IMAGE_DATA_TYPE_HALF4 ||
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type == IMAGE_DATA_TYPE_HALF) &&
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@ -1105,10 +1105,11 @@ void ImageManager::device_pack_images(Device *device,
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size_t size = 0, offset = 0;
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ImageDataType type;
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int info_size = tex_num_images[IMAGE_DATA_TYPE_FLOAT4] + tex_num_images[IMAGE_DATA_TYPE_BYTE4];
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int info_size = tex_num_images[IMAGE_DATA_TYPE_FLOAT4] + tex_num_images[IMAGE_DATA_TYPE_BYTE4]
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+ tex_num_images[IMAGE_DATA_TYPE_FLOAT] + tex_num_images[IMAGE_DATA_TYPE_BYTE];
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uint4 *info = dscene->tex_image_packed_info.resize(info_size);
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/* Byte Textures*/
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/* Byte4 Textures*/
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type = IMAGE_DATA_TYPE_BYTE4;
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for(size_t slot = 0; slot < images[type].size(); slot++) {
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@ -1119,7 +1120,7 @@ void ImageManager::device_pack_images(Device *device,
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size += tex_img.size();
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}
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uchar4 *pixels_byte = dscene->tex_image_byte4_packed.resize(size);
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uchar4 *pixels_byte4 = dscene->tex_image_byte4_packed.resize(size);
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for(size_t slot = 0; slot < images[type].size(); slot++) {
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if(!images[type][slot])
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@ -1131,11 +1132,11 @@ void ImageManager::device_pack_images(Device *device,
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info[type_index_to_flattened_slot(slot, type)] = make_uint4(tex_img.data_width, tex_img.data_height, offset, options);
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memcpy(pixels_byte+offset, (void*)tex_img.data_pointer, tex_img.memory_size());
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memcpy(pixels_byte4+offset, (void*)tex_img.data_pointer, tex_img.memory_size());
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offset += tex_img.size();
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}
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/* Float Textures*/
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/* Float4 Textures*/
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type = IMAGE_DATA_TYPE_FLOAT4;
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size = 0, offset = 0;
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@ -1147,7 +1148,7 @@ void ImageManager::device_pack_images(Device *device,
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size += tex_img.size();
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}
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float4 *pixels_float = dscene->tex_image_float4_packed.resize(size);
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float4 *pixels_float4 = dscene->tex_image_float4_packed.resize(size);
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for(size_t slot = 0; slot < images[type].size(); slot++) {
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if(!images[type][slot])
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@ -1160,6 +1161,63 @@ void ImageManager::device_pack_images(Device *device,
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uint8_t options = pack_image_options(type, slot);
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info[type_index_to_flattened_slot(slot, type)] = make_uint4(tex_img.data_width, tex_img.data_height, offset, options);
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memcpy(pixels_float4+offset, (void*)tex_img.data_pointer, tex_img.memory_size());
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offset += tex_img.size();
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}
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/* Byte Textures*/
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type = IMAGE_DATA_TYPE_BYTE;
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size = 0, offset = 0;
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for(size_t slot = 0; slot < images[type].size(); slot++) {
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if(!images[type][slot])
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continue;
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device_vector<uchar>& tex_img = dscene->tex_byte_image[slot];
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size += tex_img.size();
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}
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uchar *pixels_byte = dscene->tex_image_byte_packed.resize(size);
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for(size_t slot = 0; slot < images[type].size(); slot++) {
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if(!images[type][slot])
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continue;
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device_vector<uchar>& tex_img = dscene->tex_byte_image[slot];
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uint8_t options = pack_image_options(type, slot);
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info[type_index_to_flattened_slot(slot, type)] = make_uint4(tex_img.data_width, tex_img.data_height, offset, options);
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memcpy(pixels_byte+offset, (void*)tex_img.data_pointer, tex_img.memory_size());
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offset += tex_img.size();
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}
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/* Float Textures*/
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type = IMAGE_DATA_TYPE_FLOAT;
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size = 0, offset = 0;
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for(size_t slot = 0; slot < images[type].size(); slot++) {
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if(!images[type][slot])
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continue;
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device_vector<float>& tex_img = dscene->tex_float_image[slot];
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size += tex_img.size();
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}
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float *pixels_float = dscene->tex_image_float_packed.resize(size);
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for(size_t slot = 0; slot < images[type].size(); slot++) {
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if(!images[type][slot])
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continue;
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device_vector<float>& tex_img = dscene->tex_float_image[slot];
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/* todo: support 3D textures, only CPU for now */
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uint8_t options = pack_image_options(type, slot);
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info[type_index_to_flattened_slot(slot, type)] = make_uint4(tex_img.data_width, tex_img.data_height, offset, options);
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memcpy(pixels_float+offset, (void*)tex_img.data_pointer, tex_img.memory_size());
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offset += tex_img.size();
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}
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@ -1178,6 +1236,20 @@ void ImageManager::device_pack_images(Device *device,
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}
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device->tex_alloc("__tex_image_float4_packed", dscene->tex_image_float4_packed);
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}
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if(dscene->tex_image_byte_packed.size()) {
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if(dscene->tex_image_byte_packed.device_pointer) {
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thread_scoped_lock device_lock(device_mutex);
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device->tex_free(dscene->tex_image_byte_packed);
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}
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device->tex_alloc("__tex_image_byte_packed", dscene->tex_image_byte_packed);
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}
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if(dscene->tex_image_float_packed.size()) {
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if(dscene->tex_image_float_packed.device_pointer) {
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thread_scoped_lock device_lock(device_mutex);
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device->tex_free(dscene->tex_image_float_packed);
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}
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device->tex_alloc("__tex_image_float_packed", dscene->tex_image_float_packed);
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}
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if(dscene->tex_image_packed_info.size()) {
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if(dscene->tex_image_packed_info.device_pointer) {
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thread_scoped_lock device_lock(device_mutex);
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@ -1208,10 +1280,14 @@ void ImageManager::device_free(Device *device, DeviceScene *dscene)
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device->tex_free(dscene->tex_image_byte4_packed);
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device->tex_free(dscene->tex_image_float4_packed);
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device->tex_free(dscene->tex_image_byte_packed);
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device->tex_free(dscene->tex_image_float_packed);
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device->tex_free(dscene->tex_image_packed_info);
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dscene->tex_image_byte4_packed.clear();
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dscene->tex_image_float4_packed.clear();
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dscene->tex_image_byte_packed.clear();
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dscene->tex_image_float_packed.clear();
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dscene->tex_image_packed_info.clear();
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}
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@ -123,6 +123,8 @@ public:
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/* opencl images */
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device_vector<uchar4> tex_image_byte4_packed;
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device_vector<float4> tex_image_float4_packed;
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device_vector<uchar> tex_image_byte_packed;
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device_vector<float> tex_image_float_packed;
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device_vector<uint4> tex_image_packed_info;
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KernelData data;
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@ -67,8 +67,8 @@ CCL_NAMESPACE_BEGIN
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#define TEX_NUM_FLOAT4_OPENCL 1024
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#define TEX_NUM_BYTE4_OPENCL 1024
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#define TEX_NUM_HALF4_OPENCL 0
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#define TEX_NUM_FLOAT_OPENCL 0
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#define TEX_NUM_BYTE_OPENCL 0
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#define TEX_NUM_FLOAT_OPENCL 1024
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#define TEX_NUM_BYTE_OPENCL 1024
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#define TEX_NUM_HALF_OPENCL 0
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#define TEX_START_FLOAT4_OPENCL 0
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#define TEX_START_BYTE4_OPENCL TEX_NUM_FLOAT4_OPENCL
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