From: Alan Hourihane <alanh@vmware.com>
Date: Thu, 15 Jan 2009 11:51:39 +0000 (+0000)
Subject: mesa: check frambuffer complete status before rendering
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=263b96e160606975285154c4b8b610fcb8f4c930;p=mesa.git

mesa: check frambuffer complete status before rendering
---

diff --git a/src/mesa/main/api_validate.c b/src/mesa/main/api_validate.c
index bbc5933ab9f..5c8955d7c8d 100644
--- a/src/mesa/main/api_validate.c
+++ b/src/mesa/main/api_validate.c
@@ -78,6 +78,23 @@ max_buffer_index(GLcontext *ctx, GLuint count, GLenum type,
    return max;
 }
 
+static GLboolean
+check_valid_to_render(GLcontext *ctx, char *function)
+{
+   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+                  "glDraw%s(incomplete framebuffer)", function);
+      return GL_FALSE;
+   }
+
+   /* Always need vertex positions, unless a vertex program is in use */
+   if (!ctx->VertexProgram._Current &&
+       !ctx->Array.ArrayObj->Vertex.Enabled &&
+       !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
 
 GLboolean
 _mesa_validate_DrawElements(GLcontext *ctx,
@@ -108,10 +125,7 @@ _mesa_validate_DrawElements(GLcontext *ctx,
    if (ctx->NewState)
       _mesa_update_state(ctx);
 
-   /* Always need vertex positions, unless a vertex program is in use */
-   if (!ctx->VertexProgram._Current &&
-       !ctx->Array.ArrayObj->Vertex.Enabled &&
-       !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)
+   if (!check_valid_to_render(ctx, "Elements"))
       return GL_FALSE;
 
    /* Vertex buffer object tests */
@@ -161,7 +175,6 @@ _mesa_validate_DrawElements(GLcontext *ctx,
    return GL_TRUE;
 }
 
-
 GLboolean
 _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
 				 GLuint start, GLuint end,
@@ -196,10 +209,7 @@ _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
    if (ctx->NewState)
       _mesa_update_state(ctx);
 
-   /* Always need vertex positions, unless a vertex program is in use */
-   if (!ctx->VertexProgram._Current &&
-       !ctx->Array.ArrayObj->Vertex.Enabled &&
-       !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)
+   if (!check_valid_to_render(ctx, "RangeElements"))
       return GL_FALSE;
 
    /* Vertex buffer object tests */
@@ -267,10 +277,7 @@ _mesa_validate_DrawArrays(GLcontext *ctx,
    if (ctx->NewState)
       _mesa_update_state(ctx);
 
-   /* Always need vertex positions, unless a vertex program is in use */
-   if (!ctx->VertexProgram._Current &&
-       !ctx->Array.ArrayObj->Vertex.Enabled &&
-       !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)
+   if (!check_valid_to_render(ctx, "Arrays"))
       return GL_FALSE;
 
    if (ctx->Const.CheckArrayBounds) {