Mesa (mesa_7_7_branch): mesa: re-implement _mesa_ProgramEnvParameter4fvARB( ) with memcpy()

[Brian Paul]

Module: Mesa
Branch: mesa_7_7_branch
Commit: 099e8ec54d4f7b9cd9ae3a481d6a6ae60f4590be
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=099e8ec54d4f7b9cd9ae3a481d6a6ae60f4590be

Author: Brian Paul <brianp at vmware.com>
Date:   Fri Jan 22 15:41:08 2010 -0700

mesa: re-implement _mesa_ProgramEnvParameter4fvARB() with memcpy()

This is faster and ensures that NaN floats get stored properly.
Before, NaN values (which might be used with UP2H, UP2US, UP4B and
UP4UB) weren't getting stored properly with gcc -O3.

This is the second part of the fix for the piglit fp-unpack-01 failure
(bug 25973).

---

 src/mesa/shader/arbprogram.c |   33 ++++++++++++++++++++++++++++++---
 1 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/src/mesa/shader/arbprogram.c b/src/mesa/shader/arbprogram.c
index eb537cd..3cb2610 100644
--- a/src/mesa/shader/arbprogram.c
+++ b/src/mesa/shader/arbprogram.c
@@ -561,6 +561,8 @@ _mesa_ProgramEnvParameter4fARB(GLenum target, GLuint index,
    }
 }
 
+
+
 /**
  * Set a program env parameter register.
  * \note Called from the GL API dispatcher.
@@ -569,10 +571,35 @@ _mesa_ProgramEnvParameter4fARB(GLenum target, GLuint index,
  */
 void GLAPIENTRY
 _mesa_ProgramEnvParameter4fvARB(GLenum target, GLuint index,
-                                   const GLfloat *params)
+                                const GLfloat *params)
 {
-   _mesa_ProgramEnvParameter4fARB(target, index, params[0], params[1],
-                                  params[2], params[3]);
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
+
+   if (target == GL_FRAGMENT_PROGRAM_ARB
+       && ctx->Extensions.ARB_fragment_program) {
+      if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter4fv(index)");
+         return;
+      }
+      memcpy(ctx->FragmentProgram.Parameters[index], params,
+             4 * sizeof(GLfloat));
+   }
+   else if (target == GL_VERTEX_PROGRAM_ARB /* == GL_VERTEX_PROGRAM_NV */
+       && (ctx->Extensions.ARB_vertex_program || ctx->Extensions.NV_vertex_program)) {
+      if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter4fv(index)");
+         return;
+      }
+      memcpy(ctx->VertexProgram.Parameters[index], params,
+             4 * sizeof(GLfloat));
+   }
+   else {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameter4fv(target)");
+      return;
+   }
 }