bf_gpu: Add GPU_state module.

This has wrappers for the most common gl* functions in the codebase, and is in preparation for D3502

Reviewers: brecht, fclem

Differential Revision: https://developer.blender.org/D3501

1 files changed, 61 insertions, 0 deletions

diff --git a/source/blender/gpu/GPU_state.h b/source/blender/gpu/GPU_state.h
new file mode 100644
index 00000000000..ee0216422b1
--- /dev/null
+++ b/source/blender/gpu/GPU_state.h
@@ -0,0 +1,61 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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.
+ *
+ * Contributor(s): Ray Molenkamp
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file GPU_state.h
+ *  \ingroup gpu
+ */
+
+#ifndef __GPU_STATE_H__
+#define __GPU_STATE_H__
+
+ /* These map directly to the GL_ blend functions, to minimize API add as needed*/
+typedef enum GPUBlendFunction {
+	GPU_ONE,
+	GPU_SRC_ALPHA,
+	GPU_ONE_MINUS_SRC_ALPHA,
+	GPU_DST_COLOR,
+	GPU_ZERO,
+} GPUBlendFunction;
+
+/* These map directly to the GL_ filter functions, to minimize API add as needed*/
+typedef enum GPUFilterFunction {
+	GPU_NEAREST,
+	GPU_LINEAR
+} GPUFilterFunction;
+
+void GPU_blend(bool enable);
+void GPU_blend_set_func(GPUBlendFunction sfactor, GPUBlendFunction dfactor);
+void GPU_blend_set_func_separate(GPUBlendFunction src_rgb, GPUBlendFunction dst_rgb, GPUBlendFunction src_alpha, GPUBlendFunction dst_alpha);
+void GPU_depth_test(bool enable);
+bool GPU_depth_test_enabled(void);
+void GPU_line_smooth(bool enable);
+void GPU_line_stipple(bool enable);
+void GPU_line_width(float width);
+void GPU_point_size(float size);
+void GPU_polygon_smooth(bool enable);
+void GPU_scissor(int x, int y, int width, int height);
+void GPU_scissor_getf(float coords[4]);
+void GPU_scissor_geti(int coords[4]);
+void GPU_viewport_size_getf(float coords[4]);
+void GPU_viewport_size_geti(int coords[4]);
+
+#endif  /* __GPU_STATE_H__ */