[Bf-blender-cvs] [bdfc10e482c] master: Fix T59349: Cycles viewport render flickering when changing some settings.

[Brecht Van Lommel]

Commit: bdfc10e482c4c6724a45259c4b2f2d7cde7d26d0
Author: Brecht Van Lommel
Date:   Thu Jan 3 19:21:10 2019 +0100
Branches: master
https://developer.blender.org/rBbdfc10e482c4c6724a45259c4b2f2d7cde7d26d0

Fix T59349: Cycles viewport render flickering when changing some settings.

===================================================================

M       intern/cycles/device/device.cpp
M       intern/cycles/device/device_cuda.cpp

===================================================================

diff --git a/intern/cycles/device/device.cpp b/intern/cycles/device/device.cpp
index be35b90bff0..6ff94b45700 100644
--- a/intern/cycles/device/device.cpp
+++ b/intern/cycles/device/device.cpp
@@ -242,6 +242,7 @@ void Device::draw_pixels(
        mem_copy_from(rgba, y, w, h, rgba.memory_elements_size(1));
 
        GLuint texid;
+       glActiveTexture(GL_TEXTURE0);
        glGenTextures(1, &texid);
        glBindTexture(GL_TEXTURE_2D, texid);
 
diff --git a/intern/cycles/device/device_cuda.cpp 
b/intern/cycles/device/device_cuda.cpp
index a788a8627d8..67f5793e793 100644
--- a/intern/cycles/device/device_cuda.cpp
+++ b/intern/cycles/device/device_cuda.cpp
@@ -1861,6 +1861,7 @@ public:
 
                glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
 
+               glActiveTexture(GL_TEXTURE0);
                glGenTextures(1, &pmem.cuTexId);
                glBindTexture(GL_TEXTURE_2D, pmem.cuTexId);
                if(mem.data_type == TYPE_HALF)
@@ -1949,6 +1950,7 @@ public:
                                offset *= sizeof(uint8_t);
 
                        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pmem.cuPBO);
+                       glActiveTexture(GL_TEXTURE0);
                        glBindTexture(GL_TEXTURE_2D, pmem.cuTexId);
                        if(mem.data_type == TYPE_HALF) {
                                glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, 
GL_RGBA, GL_HALF_FLOAT, (void*)offset);

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