mesa: add clear_bufferiv() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

diff --git a/src/mesa/main/clear.c b/src/mesa/main/clear.c
index 3aa3cfd9a9846320e743746d11e09236a35a0893..ea75a95184ecb09d36621e34c615d6b7a596a48c 100644 (file)
--- a/src/mesa/main/clear.c
+++ b/src/mesa/main/clear.c
@@ -338,12 +338,11 @@ make_color_buffer_mask(struct gl_context *ctx, GLint drawbuffer)
  * New in GL 3.0
  * Clear signed integer color buffer or stencil buffer (not depth).
  */
-void GLAPIENTRY
-_mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
+static ALWAYS_INLINE void
+clear_bufferiv(struct gl_context *ctx, GLenum buffer, GLint drawbuffer,
+               const GLint *value, bool no_error)
 {
-   GET_CURRENT_CONTEXT(ctx);
    FLUSH_VERTICES(ctx, 0);
-
    FLUSH_CURRENT(ctx, 0);
 
    if (ctx->NewState) {
@@ -359,7 +358,7 @@ _mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
        *     value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
        *     STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
        */
-      if (drawbuffer != 0) {
+      if (!no_error && drawbuffer != 0) {
          _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferiv(drawbuffer=%d)",
                      drawbuffer);
          return;
@@ -380,7 +379,7 @@ _mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
    case GL_COLOR:
       {
          const GLbitfield mask = make_color_buffer_mask(ctx, drawbuffer);
-         if (mask == INVALID_MASK) {
+         if (!no_error && mask == INVALID_MASK) {
             _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferiv(drawbuffer=%d)",
                         drawbuffer);
             return;
@@ -400,19 +399,29 @@ _mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
       }
       break;
    default:
-      /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
-       * of the OpenGL 4.5 spec states:
-       *
-       *    "An INVALID_ENUM error is generated by ClearBufferiv and
-       *     ClearNamedFramebufferiv if buffer is not COLOR or STENCIL."
-       */
-      _mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferiv(buffer=%s)",
-                  _mesa_enum_to_string(buffer));
+      if (!no_error) {
+         /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
+          * of the OpenGL 4.5 spec states:
+          *
+          *    "An INVALID_ENUM error is generated by ClearBufferiv and
+          *     ClearNamedFramebufferiv if buffer is not COLOR or STENCIL."
+          */
+         _mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferiv(buffer=%s)",
+                     _mesa_enum_to_string(buffer));
+      }
       return;
    }
 }
 
 
+void GLAPIENTRY
+_mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   clear_bufferiv(ctx, buffer, drawbuffer, value, false);
+}
+
+
 /**
  * The ClearBuffer framework is so complicated and so riddled with the
  * assumption that the framebuffer is bound that, for now, we will just fake