GPUShader: GL backend isolation

source/blender/gpu/intern/gpu_shader_private.hh

@@ -0,0 +1,61 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup gpu
+ */
+
+#pragma once
+
+#include "BLI_span.hh"
+
+#include "GPU_shader.h"
+#include "GPU_shader_interface.h"
+#include "GPU_vertex_buffer.h"
+
+namespace blender {
+namespace gpu {
+
+class Shader : public GPUShader {
+ public:
+  Shader(const char *name);
+  virtual ~Shader();
+
+  virtual void vertex_shader_from_glsl(MutableSpan<const char *> sources) = 0;
+  virtual void geometry_shader_from_glsl(MutableSpan<const char *> sources) = 0;
+  virtual void fragment_shader_from_glsl(MutableSpan<const char *> sources) = 0;
+  virtual bool finalize(void) = 0;
+
+  virtual void transform_feedback_names_set(Span<const char *> name_list,
+                                            const eGPUShaderTFBType geom_type) = 0;
+  virtual bool transform_feedback_enable(GPUVertBuf *) = 0;
+  virtual void transform_feedback_disable(void) = 0;
+
+  virtual void bind(void) = 0;
+  virtual void unbind(void) = 0;
+
+  virtual void uniform_float(int location, int comp_len, int array_size, const float *data) = 0;
+  virtual void uniform_int(int location, int comp_len, int array_size, const int *data) = 0;
+
+ protected:
+  void print_errors(Span<const char *> sources, const char *log);
+};
+
+}  // namespace gpu
+}  // namespace blender
+
+/* XXX do not use it. Special hack to use OCIO with batch API. */
+GPUShader *immGetShader(void);