Move backend information into Device

[libs/gl.git] / source / backends / opengl / device_backend.cpp

diff --git a/source/backends/opengl/device_backend.cpp b/source/backends/opengl/device_backend.cpp
index 5429c0c1ced0b452e6b49625a534ff9204e0bb5b..1c51b132ca48500a26f5b78841bbb2e99c855cd3 100644 (file)
--- a/source/backends/opengl/device_backend.cpp
+++ b/source/backends/opengl/device_backend.cpp
@@ -1,4 +1,22 @@
+#include <msp/gl/extensions/arb_enhanced_layouts.h>
+#include <msp/gl/extensions/arb_explicit_attrib_location.h>
+#include <msp/gl/extensions/arb_explicit_uniform_location.h>
+#include <msp/gl/extensions/arb_gpu_shader5.h>
+#include <msp/gl/extensions/arb_separate_shader_objects.h>
+#include <msp/gl/extensions/arb_uniform_buffer_object.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
+#include <msp/gl/extensions/ext_framebuffer_multisample.h>
+#include <msp/gl/extensions/ext_framebuffer_object.h>
+#include <msp/gl/extensions/ext_gpu_shader4.h>
+#include <msp/gl/extensions/ext_texture_array.h>
+#include <msp/gl/extensions/ext_texture_filter_anisotropic.h>
+#include <msp/gl/extensions/msp_clipping.h>
+#include <msp/gl/extensions/nv_fbo_color_attachments.h>
+#include "device.h"
 #include "device_backend.h"
+#include "gl.h"
+
+using namespace std;
 
 namespace Msp {
 namespace GL {
@@ -7,5 +25,61 @@ OpenGLDevice::OpenGLDevice(Graphics::Window &wnd, const Graphics::GLOptions &opt
        context(wnd, opts)
 { }
 
+void OpenGLDevice::fill_info()
+{
+       DeviceInfo &info = static_cast<Device *>(this)->info;
+
+       if(const char *gl_ver_ptr = reinterpret_cast<const char *>(glGetString(GL_VERSION)))
+       {
+               string gl_ver = gl_ver_ptr;
+               if(!gl_ver.compare(0, 10, "OpenGL ES "))
+                       gl_ver.erase(0, 10);
+
+               Version ver(gl_ver.substr(0, gl_ver.find(' ')));
+
+               if(const char *force_ver_ptr = getenv("MSPGL_FORCE_VERSION"))
+               {
+                       Version force_ver(force_ver_ptr);
+                       if(force_ver<ver)
+                               ver = force_ver;
+               }
+
+               info.api_version = ver;
+       }
+
+       DeviceLimits &lim = info.limits;
+       glGetIntegerv(GL_MAX_CLIP_PLANES, reinterpret_cast<int *>(&lim.max_clip_planes));
+       if(ARB_vertex_shader)
+       {
+               glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, reinterpret_cast<int *>(&lim.max_vertex_attributes));
+               glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, reinterpret_cast<int *>(&lim.max_texture_bindings));
+       }
+       if(EXT_framebuffer_object)
+               glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, reinterpret_cast<int *>(&lim.max_color_attachments));
+       if(EXT_framebuffer_multisample)
+               glGetIntegerv(GL_MAX_SAMPLES, reinterpret_cast<int *>(&lim.max_samples));
+       if(ARB_uniform_buffer_object)
+       {
+               glGetIntegerv(GL_MAX_UNIFORM_BUFFER_BINDINGS, reinterpret_cast<int *>(&lim.max_uniform_bindings));
+               glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, reinterpret_cast<int *>(&lim.uniform_buffer_alignment));
+       }
+       if(EXT_texture_filter_anisotropic)
+               glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY, &lim.max_anisotropy);
+
+       SL::Features &feat = info.glsl_features;
+       feat.target_api = get_backend_api();
+       feat.glsl_version = get_glsl_version();
+       feat.arb_enhanced_layouts = ARB_enhanced_layouts;
+       feat.arb_explicit_attrib_location = ARB_explicit_attrib_location;
+       feat.arb_explicit_uniform_location = ARB_explicit_uniform_location;
+       feat.arb_gpu_shader5 = ARB_gpu_shader5;
+       feat.arb_separate_shader_objects = ARB_separate_shader_objects;
+       feat.arb_uniform_buffer_object = ARB_uniform_buffer_object;
+       feat.ext_gpu_shader4 = EXT_gpu_shader4;
+       feat.ext_texture_array = EXT_texture_array;
+       feat.uniform_binding_range = lim.max_uniform_bindings;
+       feat.texture_binding_range = lim.max_texture_bindings;
+}
+
 } // namespace GL
 } // namespace Msp