mesa: added infrastructure for GL_EXT_draw_buffers2

src/mesa/main/enable.c

@@ -1033,6 +1033,9 @@ _mesa_set_enablei(GLcontext *ctx, GLenum cap, GLuint index, GLboolean state)
    ASSERT(state == 0 || state == 1);
    switch (cap) {
    case GL_BLEND:
+      if (!ctx->Extensions.EXT_draw_buffers2) {
+         goto bad_cap_error;
+      }
       if (index >= ctx->Const.MaxDrawBuffers) {
          _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)",
                      state ? "glEnableIndexed" : "glDisableIndexed", index);
@@ -1047,10 +1050,14 @@ _mesa_set_enablei(GLcontext *ctx, GLenum cap, GLuint index, GLboolean state)
       }
       break;
    default:
-      _mesa_error(ctx, GL_INVALID_ENUM, "%s(cap=%s)",
+      goto bad_cap_error;
-                  state ? "glEnableIndexed" : "glDisableIndexed",
-                  _mesa_lookup_enum_by_nr(cap));
    }
+   return;
+
+bad_cap_error:
+    _mesa_error(ctx, GL_INVALID_ENUM, "%s(cap=%s)",
+                state ? "glEnablei" : "glDisablei",
+                _mesa_lookup_enum_by_nr(cap));
 }
 
 

src/mesa/main/extensions.c

@@ -103,6 +103,7 @@ static const struct {
    { OFF, "GL_EXT_convolution",                F(EXT_convolution) },
    { ON,  "GL_EXT_copy_texture",               F(EXT_copy_texture) },
    { OFF, "GL_EXT_depth_bounds_test",          F(EXT_depth_bounds_test) },
+   { OFF, "GL_EXT_draw_buffers2",              F(EXT_draw_buffers2) },
    { ON,  "GL_EXT_draw_range_elements",        F(EXT_draw_range_elements) },
    { OFF, "GL_EXT_framebuffer_blit",           F(EXT_framebuffer_blit) },
    { OFF, "GL_EXT_framebuffer_multisample",    F(EXT_framebuffer_multisample) },

src/mesa/main/get.c

@@ -7448,12 +7448,14 @@ _mesa_GetBooleanIndexedv( GLenum pname, GLuint index, GLboolean *params )
 
    switch (pname) {
       case GL_BLEND:
+         CHECK_EXT1(EXT_draw_buffers2, "GetBooleanIndexedv");
          if (index >= ctx->Const.MaxDrawBuffers) {
             _mesa_error(ctx, GL_INVALID_VALUE, "glGetBooleanIndexedv(index=%u), index", pname);
          }
          params[0] = INT_TO_BOOLEAN(((ctx->Color.BlendEnabled >> index) & 1));
          break;
       case GL_COLOR_WRITEMASK:
+         CHECK_EXT1(EXT_draw_buffers2, "GetBooleanIndexedv");
          if (index >= ctx->Const.MaxDrawBuffers) {
             _mesa_error(ctx, GL_INVALID_VALUE, "glGetBooleanIndexedv(index=%u), index", pname);
          }
@@ -7481,12 +7483,14 @@ _mesa_GetIntegerIndexedv( GLenum pname, GLuint index, GLint *params )
 
    switch (pname) {
       case GL_BLEND:
+         CHECK_EXT1(EXT_draw_buffers2, "GetIntegerIndexedv");
          if (index >= ctx->Const.MaxDrawBuffers) {
             _mesa_error(ctx, GL_INVALID_VALUE, "glGetIntegerIndexedv(index=%u), index", pname);
          }
          params[0] = ((ctx->Color.BlendEnabled >> index) & 1);
          break;
       case GL_COLOR_WRITEMASK:
+         CHECK_EXT1(EXT_draw_buffers2, "GetIntegerIndexedv");
          if (index >= ctx->Const.MaxDrawBuffers) {
             _mesa_error(ctx, GL_INVALID_VALUE, "glGetIntegerIndexedv(index=%u), index", pname);
          }
@@ -7515,12 +7519,14 @@ _mesa_GetInteger64Indexedv( GLenum pname, GLuint index, GLint64 *params )
 
    switch (pname) {
       case GL_BLEND:
+         CHECK_EXT1(EXT_draw_buffers2, "GetInteger64Indexedv");
          if (index >= ctx->Const.MaxDrawBuffers) {
             _mesa_error(ctx, GL_INVALID_VALUE, "glGetInteger64Indexedv(index=%u), index", pname);
          }
          params[0] = (GLint64)(((ctx->Color.BlendEnabled >> index) & 1));
          break;
       case GL_COLOR_WRITEMASK:
+         CHECK_EXT1(EXT_draw_buffers2, "GetInteger64Indexedv");
          if (index >= ctx->Const.MaxDrawBuffers) {
             _mesa_error(ctx, GL_INVALID_VALUE, "glGetInteger64Indexedv(index=%u), index", pname);
          }

src/mesa/main/get_gen.py

@@ -1036,13 +1036,13 @@ StateVars = [
 # These are queried via glGetIntegetIndexdvEXT() or glGetIntegeri_v()
 IndexedStateVars = [
 	( "GL_BLEND", GLint, ["((ctx->Color.BlendEnabled >> index) & 1)"],
-	  "ctx->Const.MaxDrawBuffers", None ),
+	  "ctx->Const.MaxDrawBuffers", ["EXT_draw_buffers2"] ),
 	( "GL_COLOR_WRITEMASK", GLint,
 	  [ "ctx->Color.ColorMask[index][RCOMP] ? 1 : 0",
 		"ctx->Color.ColorMask[index][GCOMP] ? 1 : 0",
 		"ctx->Color.ColorMask[index][BCOMP] ? 1 : 0",
 		"ctx->Color.ColorMask[index][ACOMP] ? 1 : 0" ],
-	  "ctx->Const.MaxDrawBuffers", None ),
+	  "ctx->Const.MaxDrawBuffers", ["EXT_draw_buffers2"] ),
 	# XXX more to come...
 ]
 
@@ -1137,11 +1137,6 @@ def EmitGetFunction(stateVars, returnType, indexed):
 			(name, varType, state, optionalCode, extensions) = state
 			indexMax = 0
 		print "      case " + name + ":"
-		if indexMax:
-			print ('         if (index >= %s) {' % indexMax)
-			print ('            _mesa_error(ctx, GL_INVALID_VALUE, "gl%s(index=%%u), index", pname);' % function)
-			print ('         }')
-
 		if extensions:
 			if len(extensions) == 1:
 				print ('         CHECK_EXT1(%s, "%s");' %
@@ -1156,6 +1151,11 @@ def EmitGetFunction(stateVars, returnType, indexed):
 				assert len(extensions) == 4
 				print ('         CHECK_EXT4(%s, %s, %s, %s, "%s");' %
 					   (extensions[0], extensions[1], extensions[2], extensions[3], function))
+		if indexMax:
+			print ('         if (index >= %s) {' % indexMax)
+			print ('            _mesa_error(ctx, GL_INVALID_VALUE, "gl%s(index=%%u), index", pname);' % function)
+			print ('         }')
+
 		conversion = ConversionFunc(varType, returnType)
 		if optionalCode:
 			optionalCode = string.replace(optionalCode, "CONVERSION", conversion);	

src/mesa/main/mtypes.h

@@ -2434,6 +2434,7 @@ struct gl_extensions
    GLboolean EXT_compiled_vertex_array;
    GLboolean EXT_copy_texture;
    GLboolean EXT_depth_bounds_test;
+   GLboolean EXT_draw_buffers2;
    GLboolean EXT_draw_range_elements;
    GLboolean EXT_fog_coord;
    GLboolean EXT_framebuffer_blit;