remove stray tab

[mesa.git] / src / mesa / shader / arbprogram.c

diff --git a/src/mesa/shader/arbprogram.c b/src/mesa/shader/arbprogram.c
index e1b2a94c8aabeac46a109c7bc1b196e0e298e790..f3b25da3948d25c90975346ce3a9fe09655e6b7b 100644 (file)
--- a/src/mesa/shader/arbprogram.c
+++ b/src/mesa/shader/arbprogram.c
@@ -102,7 +102,7 @@ _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   if (index == 0 || index >= MAX_VERTEX_PROGRAM_ATTRIBS) {
+   if (index >= MAX_VERTEX_PROGRAM_ATTRIBS) {
       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribfvARB(index)");
       return;
    }
@@ -124,6 +124,11 @@ _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
          params[0] = ctx->Array.ArrayObj->VertexAttrib[index].Normalized;
          break;
       case GL_CURRENT_VERTEX_ATTRIB_ARB:
+         if (index == 0) {
+            _mesa_error(ctx, GL_INVALID_OPERATION,
+                        "glGetVertexAttribfvARB(index==0)");
+            return;
+         }
          FLUSH_CURRENT(ctx, 0);
          COPY_4V(params, ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index]);
          break;
@@ -190,13 +195,15 @@ _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 GLboolean GLAPIENTRY
 _mesa_IsProgramARB(GLuint id)
 {
+   struct gl_program *prog = NULL; 
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 
    if (id == 0)
       return GL_FALSE;
 
-   if (_mesa_lookup_program(ctx, id))
+   prog = _mesa_lookup_program(ctx, id);
+   if (prog && (prog != &_mesa_DummyProgram))
       return GL_TRUE;
    else
       return GL_FALSE;
@@ -713,22 +720,22 @@ _mesa_GetProgramivARB(GLenum target, GLenum pname, GLint *params)
       const struct gl_fragment_program *fp = ctx->FragmentProgram.Current;
       switch (pname) {
          case GL_PROGRAM_ALU_INSTRUCTIONS_ARB:
-            *params = fp->NumNativeAluInstructions;
+            *params = fp->Base.NumNativeAluInstructions;
             return;
          case GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
-            *params = fp->NumAluInstructions;
+            *params = fp->Base.NumAluInstructions;
             return;
          case GL_PROGRAM_TEX_INSTRUCTIONS_ARB:
-            *params = fp->NumTexInstructions;
+            *params = fp->Base.NumTexInstructions;
             return;
          case GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
-            *params = fp->NumNativeTexInstructions;
+            *params = fp->Base.NumNativeTexInstructions;
             return;
          case GL_PROGRAM_TEX_INDIRECTIONS_ARB:
-            *params = fp->NumTexIndirections;
+            *params = fp->Base.NumTexIndirections;
             return;
          case GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
-            *params = fp->NumNativeTexIndirections;
+            *params = fp->Base.NumNativeTexIndirections;
             return;
          case GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB:
             *params = limits->MaxAluInstructions;
@@ -760,6 +767,7 @@ void GLAPIENTRY
 _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
 {
    const struct gl_program *prog;
+   char *dst = (char *) string;
    GET_CURRENT_CONTEXT(ctx);
 
    if (!ctx->_CurrentProgram)
@@ -783,5 +791,8 @@ _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
       return;
    }
 
-   _mesa_memcpy(string, prog->String, _mesa_strlen((char *) prog->String));
+   if (prog->String)
+      _mesa_memcpy(dst, prog->String, _mesa_strlen((char *) prog->String));
+   else
+      *dst = '\0';
 }