Make GL_ARB_draw_buffers mandatory

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>

5 files changed, 15 insertions, 35 deletions

diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index 36586758a4..98173cf786 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -903,14 +903,13 @@ _mesa_PopAttrib(void)
                    * function, but legal for the later.
                    */
                   GLboolean multipleBuffers = GL_FALSE;
-                  if (ctx->Extensions.ARB_draw_buffers) {
-                     GLuint i;
-                     for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
-                        if (color->DrawBuffer[i] != GL_NONE) {
-                           multipleBuffers = GL_TRUE;
-                           break;
-                        }
-                     }
+		  GLuint i;
+
+		  for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
+		     if (color->DrawBuffer[i] != GL_NONE) {
+			multipleBuffers = GL_TRUE;
+			break;
+		     }
                   }
                   /* Call the API_level functions, not _mesa_drawbuffers()
                    * since we need to do error checking on the pop'd
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
index b23d2f612b..dc415c4f20 100644
--- a/src/mesa/main/buffers.c
+++ b/src/mesa/main/buffers.c
@@ -289,10 +289,6 @@ _mesa_DrawBuffersARB(GLsizei n, const GLenum *buffers)
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-   if (!ctx->Extensions.ARB_draw_buffers) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawBuffersARB");
-      return;
-   }
    if (n < 1 || n > (GLsizei) ctx->Const.MaxDrawBuffers) {
       _mesa_error(ctx, GL_INVALID_VALUE, "glDrawBuffersARB(n)");
       return;
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index ec6ba70800..8c9208af70 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -45,7 +45,7 @@ static const struct {
    int flag_offset;
 } default_extensions[] = {
    { OFF, "GL_ARB_depth_texture",              F(ARB_depth_texture) },
-   { OFF, "GL_ARB_draw_buffers",               F(ARB_draw_buffers) },
+   { ON,  "GL_ARB_draw_buffers",               F(ARB_draw_buffers) },
    { OFF, "GL_ARB_fragment_program",           F(ARB_fragment_program) },
    { OFF, "GL_ARB_fragment_program_shadow",    F(ARB_fragment_program_shadow) },
    { OFF, "GL_ARB_fragment_shader",            F(ARB_fragment_shader) },
@@ -184,7 +184,7 @@ void
 _mesa_enable_sw_extensions(GLcontext *ctx)
 {
    ctx->Extensions.ARB_depth_texture = GL_TRUE;
-   ctx->Extensions.ARB_draw_buffers = GL_TRUE;
+   /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
 #if FEATURE_ARB_fragment_program
    ctx->Extensions.ARB_fragment_program = GL_TRUE;
    ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
@@ -401,7 +401,7 @@ _mesa_enable_1_5_extensions(GLcontext *ctx)
 void
 _mesa_enable_2_0_extensions(GLcontext *ctx)
 {
-   ctx->Extensions.ARB_draw_buffers = GL_TRUE;
+   /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
 #if FEATURE_ARB_fragment_shader
    ctx->Extensions.ARB_fragment_shader = GL_TRUE;
 #endif
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 613f067caa..8e04ab9b9d 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -1732,15 +1732,12 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
          params[0] = INT_TO_BOOLEAN(ctx->VertexProgram.CurrentPosition);
          break;
       case GL_MAX_DRAW_BUFFERS_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetBooleanv");
          params[0] = INT_TO_BOOLEAN(ctx->Const.MaxDrawBuffers);
          break;
       case GL_DRAW_BUFFER0_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetBooleanv");
          params[0] = ENUM_TO_BOOLEAN(ctx->DrawBuffer->ColorDrawBuffer[0]);
          break;
       case GL_DRAW_BUFFER1_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetBooleanv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
@@ -1752,7 +1749,6 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
          }
          break;
       case GL_DRAW_BUFFER2_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetBooleanv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
@@ -1764,7 +1760,6 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
          }
          break;
       case GL_DRAW_BUFFER3_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetBooleanv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
@@ -3563,15 +3558,12 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
          params[0] = (GLfloat)(ctx->VertexProgram.CurrentPosition);
          break;
       case GL_MAX_DRAW_BUFFERS_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetFloatv");
          params[0] = (GLfloat)(ctx->Const.MaxDrawBuffers);
          break;
       case GL_DRAW_BUFFER0_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetFloatv");
          params[0] = ENUM_TO_FLOAT(ctx->DrawBuffer->ColorDrawBuffer[0]);
          break;
       case GL_DRAW_BUFFER1_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetFloatv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
@@ -3583,7 +3575,6 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
          }
          break;
       case GL_DRAW_BUFFER2_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetFloatv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
@@ -3595,7 +3586,6 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
          }
          break;
       case GL_DRAW_BUFFER3_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetFloatv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
@@ -5394,15 +5384,12 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
          params[0] = ctx->VertexProgram.CurrentPosition;
          break;
       case GL_MAX_DRAW_BUFFERS_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetIntegerv");
          params[0] = ctx->Const.MaxDrawBuffers;
          break;
       case GL_DRAW_BUFFER0_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetIntegerv");
          params[0] = ENUM_TO_INT(ctx->DrawBuffer->ColorDrawBuffer[0]);
          break;
       case GL_DRAW_BUFFER1_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetIntegerv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
@@ -5414,7 +5401,6 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
          }
          break;
       case GL_DRAW_BUFFER2_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetIntegerv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
@@ -5426,7 +5412,6 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
          }
          break;
       case GL_DRAW_BUFFER3_ARB:
-         CHECK_EXT1(ARB_draw_buffers, "GetIntegerv");
          {
          GLenum buffer;
          if (pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
diff --git a/src/mesa/main/get_gen.py b/src/mesa/main/get_gen.py
index 78ccee9019..83a8f2f786 100644
--- a/src/mesa/main/get_gen.py
+++ b/src/mesa/main/get_gen.py
@@ -914,9 +914,9 @@ StateVars = [
 
 	# GL_ARB_draw_buffers
 	( "GL_MAX_DRAW_BUFFERS_ARB", GLint,
-	  ["ctx->Const.MaxDrawBuffers"], "", ["ARB_draw_buffers"] ),
+	  ["ctx->Const.MaxDrawBuffers"], "", None ),
 	( "GL_DRAW_BUFFER0_ARB", GLenum,
-	  ["ctx->DrawBuffer->ColorDrawBuffer[0]"], "", ["ARB_draw_buffers"] ),
+	  ["ctx->DrawBuffer->ColorDrawBuffer[0]"], "", None ),
 	( "GL_DRAW_BUFFER1_ARB", GLenum,
 	  ["buffer"],
 	  """GLenum buffer;
@@ -924,7 +924,7 @@ StateVars = [
             _mesa_error(ctx, GL_INVALID_ENUM, "glGet(GL_DRAW_BUFFERx_ARB)");
             return;
          }
-         buffer = ctx->DrawBuffer->ColorDrawBuffer[1];""", ["ARB_draw_buffers"] ),
+         buffer = ctx->DrawBuffer->ColorDrawBuffer[1];""", None ),
 	( "GL_DRAW_BUFFER2_ARB", GLenum,
 	  ["buffer"],
 	  """GLenum buffer;
@@ -932,7 +932,7 @@ StateVars = [
             _mesa_error(ctx, GL_INVALID_ENUM, "glGet(GL_DRAW_BUFFERx_ARB)");
             return;
          }
-         buffer = ctx->DrawBuffer->ColorDrawBuffer[2];""", ["ARB_draw_buffers"] ),
+         buffer = ctx->DrawBuffer->ColorDrawBuffer[2];""", None ),
 	( "GL_DRAW_BUFFER3_ARB", GLenum,
 	  ["buffer"],
 	  """GLenum buffer;
@@ -940,7 +940,7 @@ StateVars = [
             _mesa_error(ctx, GL_INVALID_ENUM, "glGet(GL_DRAW_BUFFERx_ARB)");
             return;
          }
-         buffer = ctx->DrawBuffer->ColorDrawBuffer[3];""", ["ARB_draw_buffers"] ),
+         buffer = ctx->DrawBuffer->ColorDrawBuffer[3];""", None ),
 	# XXX Add more GL_DRAW_BUFFERn_ARB entries as needed in the future
 
 	# GL_OES_read_format