// GL_EXT_texture_filter_anisotropic
int gl_support_anisotropy = false;
int gl_max_anisotropy = 1;
+// OpenGL2.0 core glStencilOpSeparate, or GL_ATI_separate_stencil
+int gl_support_separatestencil = false;
// GL_EXT_stencil_two_side
int gl_support_stenciltwoside = false;
+// GL_EXT_blend_minmax
+int gl_support_ext_blend_minmax = false;
+// GL_EXT_blend_subtract
+int gl_support_ext_blend_subtract = false;
// GL_ARB_shader_objects
int gl_support_shader_objects = false;
// GL_ARB_shading_language_100
void (GLAPIENTRY *qglLineWidth)(GLfloat width);
void (GLAPIENTRY *qglPointSize)(GLfloat size);
+void (GLAPIENTRY *qglBlendEquationEXT)(GLenum);
+
+void (GLAPIENTRY *qglStencilOpSeparate)(GLenum, GLenum, GLenum, GLenum);
+void (GLAPIENTRY *qglStencilFuncSeparate)(GLenum, GLenum, GLint, GLuint);
void (GLAPIENTRY *qglActiveStencilFaceEXT)(GLenum);
void (GLAPIENTRY *qglDeleteObjectARB)(GLhandleARB obj);
{NULL, NULL}
};
+static dllfunction_t atiseparatestencilfuncs[] =
+{
+ {"glStencilOpSeparateATI", (void **) &qglStencilOpSeparate},
+ {"glStencilFuncSeparateATI", (void **) &qglStencilFuncSeparate},
+ {NULL, NULL}
+};
+
+static dllfunction_t gl2separatestencilfuncs[] =
+{
+ {"glStencilOpSeparate", (void **) &qglStencilOpSeparate},
+ {"glStencilFuncSeparate", (void **) &qglStencilFuncSeparate},
+ {NULL, NULL}
+};
+
static dllfunction_t stenciltwosidefuncs[] =
{
{"glActiveStencilFaceEXT", (void **) &qglActiveStencilFaceEXT},
{NULL, NULL}
};
+static dllfunction_t blendequationfuncs[] =
+{
+ {"glBlendEquationEXT", (void **) &qglBlendEquationEXT},
+ {NULL, NULL}
+};
+
static dllfunction_t shaderobjectsfuncs[] =
{
{"glDeleteObjectARB", (void **) &qglDeleteObjectARB},
gl_support_clamptoedge = false;
gl_support_anisotropy = false;
gl_max_anisotropy = 1;
+ gl_support_separatestencil = false;
gl_support_stenciltwoside = false;
+ gl_support_ext_blend_minmax = false;
+ gl_support_ext_blend_subtract = false;
gl_support_shader_objects = false;
gl_support_shading_language_100 = false;
gl_support_vertex_shader = false;
if ((gl_support_anisotropy = GL_CheckExtension("GL_EXT_texture_filter_anisotropic", NULL, "-noanisotropy", false)))
qglGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &gl_max_anisotropy);
+ gl_support_ext_blend_minmax = GL_CheckExtension("GL_EXT_blend_minmax", blendequationfuncs, "-noblendminmax", false);
+ gl_support_ext_blend_subtract = GL_CheckExtension("GL_EXT_blend_subtract", blendequationfuncs, "-noblendsubtract", false);
+
+// COMMANDLINEOPTION: GL: -noseparatestencil disables use of OpenGL2.0 glStencilOpSeparate and GL_ATI_separate_stencil extensions (accelerates shadow rendering)
+ if (!(gl_support_separatestencil = GL_CheckExtension("glStencilOpSeparate", gl2separatestencilfuncs, "-noseparatestencil", false)))
+ gl_support_separatestencil = GL_CheckExtension("GL_ATI_separate_stencil", atiseparatestencilfuncs, "-noseparatestencil", false);
// COMMANDLINEOPTION: GL: -nostenciltwoside disables GL_EXT_stencil_two_side (accelerates shadow rendering)
gl_support_stenciltwoside = GL_CheckExtension("GL_EXT_stencil_two_side", stenciltwosidefuncs, "-nostenciltwoside", false);