OpenGL Render restored.

I tried to make it integrate more with regular render but couldn't
do it well, it still needs a 3D view to take the settings from, and
can't run in a separate thread due to OpenGL.

However, it is now rendering to an offscreen buffer which then gets
displayed in the image window. This requires FBO's to be available, so
a fallback creating a new window is still needed. Currently available
from the Render menu in the top header.

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/gpu/GPU_extensions.h b/source/blender/gpu/GPU_extensions.h
index a910ff9c3e7..c2af4e8fcb1 100644
--- a/source/blender/gpu/GPU_extensions.h
+++ b/source/blender/gpu/GPU_extensions.h
@@ -48,6 +48,9 @@ typedef struct GPUTexture GPUTexture;
 struct GPUFrameBuffer;
 typedef struct GPUFrameBuffer GPUFrameBuffer;
 
+struct GPUOffScreen;
+typedef struct GPUOffScreen GPUOffScreen;
+
 struct GPUShader;
 typedef struct GPUShader GPUShader;
 
@@ -107,6 +110,14 @@ void GPU_framebuffer_free(GPUFrameBuffer *fb);
 
 void GPU_framebuffer_restore();
 
+/* GPU OffScreen
+   - wrapper around framebuffer and texture for simple offscreen drawing */
+
+GPUOffScreen *GPU_offscreen_create(int width, int height);
+void GPU_offscreen_free(GPUOffScreen *ofs);
+void GPU_offscreen_bind(GPUOffScreen *ofs);
+void GPU_offscreen_unbind(GPUOffScreen *ofs);
+
 /* GPU Shader
    - only for fragment shaders now
    - must call texture bind before setting a texture as uniform! */