arbprogram.c

winNT技术操作系统,国外开放的原代码和LIUX一样

      prog = &(ctx->FragmentProgram.Current->Base);
   }
   else if (target == GL_VERTEX_PROGRAM_ARB
            && ctx->Extensions.ARB_vertex_program) {
      if (index >= ctx->Const.MaxVertexProgramLocalParams) {
         _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameterARB");
         return;
      }
      prog = &(ctx->VertexProgram.Current->Base);
   }
   else {
      _mesa_error(ctx, GL_INVALID_ENUM, "glProgramLocalParameterARB");
      return;
   }

   ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
   prog->LocalParams[index][0] = x;
   prog->LocalParams[index][1] = y;
   prog->LocalParams[index][2] = z;
   prog->LocalParams[index][3] = w;
}


/**
 * Note, this function is also used by the GL_NV_fragment_program extension.
 */
void GLAPIENTRY
_mesa_ProgramLocalParameter4fvARB(GLenum target, GLuint index,
                                  const GLfloat *params)
{
   _mesa_ProgramLocalParameter4fARB(target, index, params[0], params[1],
                                    params[2], params[3]);
}


/**
 * Note, this function is also used by the GL_NV_fragment_program extension.
 */
void GLAPIENTRY
_mesa_ProgramLocalParameter4dARB(GLenum target, GLuint index,
                                 GLdouble x, GLdouble y,
                                 GLdouble z, GLdouble w)
{
   _mesa_ProgramLocalParameter4fARB(target, index, (GLfloat) x, (GLfloat) y, 
                                    (GLfloat) z, (GLfloat) w);
}


/**
 * Note, this function is also used by the GL_NV_fragment_program extension.
 */
void GLAPIENTRY
_mesa_ProgramLocalParameter4dvARB(GLenum target, GLuint index,
                                  const GLdouble *params)
{
   _mesa_ProgramLocalParameter4fARB(target, index,
                                    (GLfloat) params[0], (GLfloat) params[1],
                                    (GLfloat) params[2], (GLfloat) params[3]);
}


/**
 * Note, this function is also used by the GL_NV_fragment_program extension.
 */
void GLAPIENTRY
_mesa_GetProgramLocalParameterfvARB(GLenum target, GLuint index,
                                    GLfloat *params)
{
   const struct program *prog;
   GLuint maxParams;
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (target == GL_VERTEX_PROGRAM_ARB
       && ctx->Extensions.ARB_vertex_program) {
      prog = &(ctx->VertexProgram.Current->Base);
      maxParams = ctx->Const.MaxVertexProgramLocalParams;
   }
   else if (target == GL_FRAGMENT_PROGRAM_ARB
            && ctx->Extensions.ARB_fragment_program) {
      prog = &(ctx->FragmentProgram.Current->Base);
      maxParams = ctx->Const.MaxFragmentProgramLocalParams;
   }
   else if (target == GL_FRAGMENT_PROGRAM_NV
            && ctx->Extensions.NV_fragment_program) {
      prog = &(ctx->FragmentProgram.Current->Base);
      maxParams = MAX_NV_FRAGMENT_PROGRAM_PARAMS;
   }
   else {
      _mesa_error(ctx, GL_INVALID_ENUM,
                  "glGetProgramLocalParameterARB(target)");
      return;
   }

   if (index >= maxParams) {
      _mesa_error(ctx, GL_INVALID_VALUE,
                  "glGetProgramLocalParameterARB(index)");
      return;
   }

   ASSERT(prog);
   ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
   COPY_4V(params, prog->LocalParams[index]);
}


/**
 * Note, this function is also used by the GL_NV_fragment_program extension.
 */
void GLAPIENTRY
_mesa_GetProgramLocalParameterdvARB(GLenum target, GLuint index,
                                    GLdouble *params)
{
   GET_CURRENT_CONTEXT(ctx);
   GLfloat floatParams[4];
   _mesa_GetProgramLocalParameterfvARB(target, index, floatParams);
   if (ctx->ErrorValue == GL_NO_ERROR) {
      COPY_4V(params, floatParams);
   }
}


void GLAPIENTRY
_mesa_GetProgramivARB(GLenum target, GLenum pname, GLint *params)
{
   struct program *prog;
   GET_CURRENT_CONTEXT(ctx);

   if (!ctx->_CurrentProgram)
      ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (target == GL_VERTEX_PROGRAM_ARB
       && ctx->Extensions.ARB_vertex_program) {
      prog = &(ctx->VertexProgram.Current->Base);
   }
   else if (target == GL_FRAGMENT_PROGRAM_ARB
            && ctx->Extensions.ARB_fragment_program) {
      prog = &(ctx->FragmentProgram.Current->Base);
   }
   else {
      _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
      return;
   }

   ASSERT(prog);

   switch (pname) {
      case GL_PROGRAM_LENGTH_ARB:
         *params = prog->String ? (GLint)_mesa_strlen((char *) prog->String) : 0;
         break;
      case GL_PROGRAM_FORMAT_ARB:
         *params = prog->Format;
         break;
      case GL_PROGRAM_BINDING_ARB:
         *params = prog->Id;
         break;
      case GL_PROGRAM_INSTRUCTIONS_ARB:
         *params = prog->NumInstructions;
         break;
      case GL_MAX_PROGRAM_INSTRUCTIONS_ARB:
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramInstructions;
         else
            *params = ctx->Const.MaxFragmentProgramInstructions;
         break;
      case GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
         *params = prog->NumInstructions;
         break;
      case GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramInstructions;
         else
            *params = ctx->Const.MaxFragmentProgramInstructions;
         break;
      case GL_PROGRAM_TEMPORARIES_ARB:
         *params = prog->NumTemporaries;
         break;
      case GL_MAX_PROGRAM_TEMPORARIES_ARB:
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramTemps;
         else
            *params = ctx->Const.MaxFragmentProgramTemps;
         break;
      case GL_PROGRAM_NATIVE_TEMPORARIES_ARB:
         /* XXX same as GL_PROGRAM_TEMPORARIES_ARB? */
         *params = prog->NumTemporaries;
         break;
      case GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB:
         /* XXX same as GL_MAX_PROGRAM_TEMPORARIES_ARB? */
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramTemps;
         else
            *params = ctx->Const.MaxFragmentProgramTemps;
         break;
      case GL_PROGRAM_PARAMETERS_ARB:
         *params = prog->NumParameters;
         break;
      case GL_MAX_PROGRAM_PARAMETERS_ARB:
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramLocalParams;
         else
            *params = ctx->Const.MaxFragmentProgramLocalParams;
         break;
      case GL_PROGRAM_NATIVE_PARAMETERS_ARB:
         /* XXX same as GL_MAX_PROGRAM_PARAMETERS_ARB? */
         *params = prog->NumParameters;
         break;
      case GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB:
         /* XXX same as GL_MAX_PROGRAM_PARAMETERS_ARB? */
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramLocalParams;
         else
            *params = ctx->Const.MaxFragmentProgramLocalParams;
         break;
      case GL_PROGRAM_ATTRIBS_ARB:
         *params = prog->NumAttributes;
         break;
      case GL_MAX_PROGRAM_ATTRIBS_ARB:
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramAttribs;
         else
            *params = ctx->Const.MaxFragmentProgramAttribs;
         break;
      case GL_PROGRAM_NATIVE_ATTRIBS_ARB:
         /* XXX same as GL_PROGRAM_ATTRIBS_ARB? */
         *params = prog->NumAttributes;
         break;
      case GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB:
         /* XXX same as GL_MAX_PROGRAM_ATTRIBS_ARB? */
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramAttribs;
         else
            *params = ctx->Const.MaxFragmentProgramAttribs;
         break;
      case GL_PROGRAM_ADDRESS_REGISTERS_ARB:
         *params = prog->NumAddressRegs;
         break;
      case GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB:
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramAddressRegs;
         else
            *params = ctx->Const.MaxFragmentProgramAddressRegs;
         break;
      case GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
         /* XXX same as GL_PROGRAM_ADDRESS_REGISTERS_ARB? */
         *params = prog->NumAddressRegs;
         break;
      case GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
         /* XXX same as GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB? */
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramAddressRegs;
         else
            *params = ctx->Const.MaxFragmentProgramAddressRegs;
         break;
      case GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB:
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramLocalParams;
         else
            *params = ctx->Const.MaxFragmentProgramLocalParams;
         break;
      case GL_MAX_PROGRAM_ENV_PARAMETERS_ARB:
         if (target == GL_VERTEX_PROGRAM_ARB)
            *params = ctx->Const.MaxVertexProgramEnvParams;
         else
            *params = ctx->Const.MaxFragmentProgramEnvParams;
         break;
      case GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB:
	 if (ctx->Driver.IsProgramNative) 
	    *params = ctx->Driver.IsProgramNative( ctx, target, prog );
	 else
	    *params = GL_TRUE;
         break;

      /*
       * The following apply to fragment programs only.
       */
      case GL_PROGRAM_ALU_INSTRUCTIONS_ARB:
      case GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
         if (target != GL_FRAGMENT_PROGRAM_ARB) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
            return;
         }
         *params = ctx->FragmentProgram.Current->NumAluInstructions;
         break;
      case GL_PROGRAM_TEX_INSTRUCTIONS_ARB:
      case GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
         if (target != GL_FRAGMENT_PROGRAM_ARB) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
            return;
         }
         *params = ctx->FragmentProgram.Current->NumTexInstructions;
         break;
      case GL_PROGRAM_TEX_INDIRECTIONS_ARB:
      case GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
         if (target != GL_FRAGMENT_PROGRAM_ARB) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
            return;
         }
         *params = ctx->FragmentProgram.Current->NumTexIndirections;
         break;
      case GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB:
      case GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
         if (target != GL_FRAGMENT_PROGRAM_ARB) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
            return;
         }
         *params = ctx->Const.MaxFragmentProgramAluInstructions;
         break;
      case GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB:
      case GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
         if (target != GL_FRAGMENT_PROGRAM_ARB) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
            return;
         }
         *params = ctx->Const.MaxFragmentProgramTexInstructions;
         break;
      case GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB:
      case GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
         if (target != GL_FRAGMENT_PROGRAM_ARB) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
            return;
         }
         *params = ctx->Const.MaxFragmentProgramTexIndirections;
         break;
      default:
         _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
         return;
   }
}


void GLAPIENTRY
_mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
{
   struct program *prog;
   GET_CURRENT_CONTEXT(ctx);

   if (!ctx->_CurrentProgram)
      ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (target == GL_VERTEX_PROGRAM_ARB) {
      prog = &(ctx->VertexProgram.Current->Base);
   }
   else if (target == GL_FRAGMENT_PROGRAM_ARB) {
      prog = &(ctx->FragmentProgram.Current->Base);
   }
   else {
      _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(target)");
      return;
   }

   ASSERT(prog);

   if (pname != GL_PROGRAM_STRING_ARB) {
      _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(pname)");
      return;
   }

   MEMCPY(string, prog->String, _mesa_strlen((char *) prog->String));
}