GPU: Rename gpu_extensions to gpu_capabilities

This makes more sense as this module has more to it than just
GL extensions.

1 files changed, 151 insertions, 0 deletions

diff --git a/source/blender/gpu/intern/gpu_capabilities.cc b/source/blender/gpu/intern/gpu_capabilities.cc
new file mode 100644
index 00000000000..83b9597abbb
--- /dev/null
+++ b/source/blender/gpu/intern/gpu_capabilities.cc
@@ -0,0 +1,151 @@
+/*
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2005 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup gpu
+ *
+ * Wrap OpenGL features such as textures, shaders and GLSL
+ * with checks for drivers and GPU support.
+ */
+
+#include "DNA_userdef_types.h"
+
+#include "GPU_capabilities.h"
+
+#include "gpu_capabilities_private.hh"
+
+#include "gl_backend.hh" /* TODO remove */
+
+namespace blender::gpu {
+
+GPUCapabilities GCaps;
+
+}
+
+using namespace blender::gpu;
+
+/* -------------------------------------------------------------------- */
+/** \name Capabilities
+ * \{ */
+
+int GPU_max_texture_size(void)
+{
+  return GCaps.max_texture_size;
+}
+
+int GPU_texture_size_with_limit(int res)
+{
+  int size = GPU_max_texture_size();
+  int reslimit = (U.glreslimit != 0) ? min_ii(U.glreslimit, size) : size;
+  return min_ii(reslimit, res);
+}
+
+int GPU_max_texture_layers(void)
+{
+  return GCaps.max_texture_layers;
+}
+
+int GPU_max_textures_vert(void)
+{
+  return GCaps.max_textures_vert;
+}
+
+int GPU_max_textures_geom(void)
+{
+  return GCaps.max_textures_geom;
+}
+
+int GPU_max_textures_frag(void)
+{
+  return GCaps.max_textures_frag;
+}
+
+int GPU_max_textures(void)
+{
+  return GCaps.max_textures;
+}
+
+bool GPU_mip_render_workaround(void)
+{
+  return GCaps.mip_render_workaround;
+}
+
+bool GPU_depth_blitting_workaround(void)
+{
+  return GCaps.depth_blitting_workaround;
+}
+
+bool GPU_use_main_context_workaround(void)
+{
+  return GCaps.use_main_context_workaround;
+}
+
+bool GPU_crappy_amd_driver(void)
+{
+  /* Currently are the same drivers with the `unused_fb_slot` problem. */
+  return GCaps.broken_amd_driver;
+}
+
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Memory statistics
+ * \{ */
+
+bool GPU_mem_stats_supported(void)
+{
+#ifndef GPU_STANDALONE
+  return (GLEW_NVX_gpu_memory_info || GLEW_ATI_meminfo);
+#else
+  return false;
+#endif
+}
+
+void GPU_mem_stats_get(int *totalmem, int *freemem)
+{
+  /* TODO(merwin): use Apple's platform API to get this info */
+
+  if (GLEW_NVX_gpu_memory_info) {
+    /* returned value in Kb */
+    glGetIntegerv(GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, totalmem);
+
+    glGetIntegerv(GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, freemem);
+  }
+  else if (GLEW_ATI_meminfo) {
+    int stats[4];
+
+    glGetIntegerv(GL_TEXTURE_FREE_MEMORY_ATI, stats);
+    *freemem = stats[0];
+    *totalmem = 0;
+  }
+  else {
+    *totalmem = 0;
+    *freemem = 0;
+  }
+}
+
+/* Return support for the active context + window. */
+bool GPU_stereo_quadbuffer_support(void)
+{
+  GLboolean stereo = GL_FALSE;
+  glGetBooleanv(GL_STEREO, &stereo);
+  return stereo == GL_TRUE;
+}
+
+/** \} */