Beispiel #1
0
void GLAPIENTRY
_mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias )
{
   GET_CURRENT_CONTEXT(ctx);
   /* XXX mult by DepthMaxF here??? */
   _mesa_PolygonOffset(factor, bias * ctx->DrawBuffer->_DepthMaxF );
}
void GL_APIENTRY
_mesa_PolygonOffsetx(GLfixed factor, GLfixed units)
{
   _mesa_PolygonOffset((GLfloat) (factor / 65536.0f),
                       (GLfloat) (units / 65536.0f));
}
Beispiel #3
0
void GLAPIENTRY
_mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias )
{
   GET_CURRENT_CONTEXT(ctx);
   _mesa_PolygonOffset(factor, bias * ctx->DepthMaxF );
}
Beispiel #4
0
/*
 * This function is kind of long just because we have to call a lot
 * of device driver functions to update device driver state.
 *
 * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 * in order to restore GL state.  This isn't terribly efficient but it
 * ensures that dirty flags and any derived state gets updated correctly.
 * We could at least check if the value to restore equals the current value
 * and then skip the Mesa call.
 */
void
_mesa_PopAttrib(void)
{
   struct gl_attrib_node *attr, *next;
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (ctx->AttribStackDepth == 0) {
      _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
      return;
   }

   ctx->AttribStackDepth--;
   attr = ctx->AttribStack[ctx->AttribStackDepth];

   while (attr) {

      if (MESA_VERBOSE&VERBOSE_API) {
	 fprintf(stderr, "glPopAttrib %s\n",
                 _mesa_lookup_enum_by_nr(attr->kind));
      }

      switch (attr->kind) {
         case GL_ACCUM_BUFFER_BIT:
            {
               const struct gl_accum_attrib *accum;
               accum = (const struct gl_accum_attrib *) attr->data;
               _mesa_ClearAccum(accum->ClearColor[0],
                                accum->ClearColor[1],
                                accum->ClearColor[2],
                                accum->ClearColor[3]);
            }
            break;
         case GL_COLOR_BUFFER_BIT:
            {
               const struct gl_colorbuffer_attrib *color;
               color = (const struct gl_colorbuffer_attrib *) attr->data;
               _mesa_ClearIndex((GLfloat) color->ClearIndex);
               _mesa_ClearColor(CHAN_TO_FLOAT(color->ClearColor[0]),
                                CHAN_TO_FLOAT(color->ClearColor[1]),
                                CHAN_TO_FLOAT(color->ClearColor[2]),
                                CHAN_TO_FLOAT(color->ClearColor[3]));
               _mesa_IndexMask(color->IndexMask);
               _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
                               (GLboolean) (color->ColorMask[1] != 0),
                               (GLboolean) (color->ColorMask[2] != 0),
                               (GLboolean) (color->ColorMask[3] != 0));
               _mesa_DrawBuffer(color->DrawBuffer);
               _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
               _mesa_AlphaFunc(color->AlphaFunc,
                               CHAN_TO_FLOAT(color->AlphaRef));
               _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
               _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
                                          color->BlendDstRGB,
                                          color->BlendSrcA,
                                          color->BlendDstA);
               _mesa_BlendEquation(color->BlendEquation);
               _mesa_BlendColor(color->BlendColor[0],
                                color->BlendColor[1],
                                color->BlendColor[2],
                                color->BlendColor[3]);
               _mesa_LogicOp(color->LogicOp);
               _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
                                color->ColorLogicOpEnabled);
               _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
                                color->IndexLogicOpEnabled);
               _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
            }
            break;
         case GL_CURRENT_BIT:
	    FLUSH_CURRENT( ctx, 0 );
            MEMCPY( &ctx->Current, attr->data,
		    sizeof(struct gl_current_attrib) );
            break;
         case GL_DEPTH_BUFFER_BIT:
            {
               const struct gl_depthbuffer_attrib *depth;
               depth = (const struct gl_depthbuffer_attrib *) attr->data;
               _mesa_DepthFunc(depth->Func);
               _mesa_ClearDepth(depth->Clear);
               _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
               _mesa_DepthMask(depth->Mask);
               if (ctx->Extensions.HP_occlusion_test)
                  _mesa_set_enable(ctx, GL_OCCLUSION_TEST_HP,
                                   depth->OcclusionTest);
            }
            break;
         case GL_ENABLE_BIT:
            {
               const struct gl_enable_attrib *enable;
               enable = (const struct gl_enable_attrib *) attr->data;
               pop_enable_group(ctx, enable);
	       ctx->NewState |= _NEW_ALL;
            }
            break;
         case GL_EVAL_BIT:
            MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
	    ctx->NewState |= _NEW_EVAL;
            break;
         case GL_FOG_BIT:
            {
               const struct gl_fog_attrib *fog;
               fog = (const struct gl_fog_attrib *) attr->data;
               _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
               _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
               _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
               _mesa_Fogf(GL_FOG_START, fog->Start);
               _mesa_Fogf(GL_FOG_END, fog->End);
               _mesa_Fogf(GL_FOG_INDEX, fog->Index);
               _mesa_Fogi(GL_FOG_MODE, fog->Mode);
            }
            break;
         case GL_HINT_BIT:
            {
               const struct gl_hint_attrib *hint;
               hint = (const struct gl_hint_attrib *) attr->data;
               _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
                          hint->PerspectiveCorrection );
               _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
               _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
               _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
               _mesa_Hint(GL_FOG_HINT, hint->Fog);
               _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
                          hint->ClipVolumeClipping);
               if (ctx->Extensions.ARB_texture_compression)
                  _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
                             hint->TextureCompression);
            }
            break;
         case GL_LIGHTING_BIT:
            {
               GLuint i;
               const struct gl_light_attrib *light;
               light = (const struct gl_light_attrib *) attr->data;
               /* lighting enable */
               _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
               /* per-light state */

	       if (ctx->ModelView.flags & MAT_DIRTY_INVERSE) 
		  _math_matrix_analyse( &ctx->ModelView );
	       
               for (i = 0; i < MAX_LIGHTS; i++) {
                  GLenum lgt = (GLenum) (GL_LIGHT0 + i);
		  const struct gl_light *l = &light->Light[i];
		  GLfloat tmp[4];
                  _mesa_set_enable(ctx, lgt, l->Enabled);
		  _mesa_Lightfv( lgt, GL_AMBIENT, l->Ambient );
		  _mesa_Lightfv( lgt, GL_DIFFUSE, l->Diffuse );
		  _mesa_Lightfv( lgt, GL_SPECULAR, l->Specular );
		  TRANSFORM_POINT( tmp, ctx->ModelView.inv, l->EyePosition );
		  _mesa_Lightfv( lgt, GL_POSITION, tmp );
		  TRANSFORM_POINT( tmp, ctx->ModelView.m, l->EyeDirection );
		  _mesa_Lightfv( lgt, GL_SPOT_DIRECTION, tmp );
		  _mesa_Lightfv( lgt, GL_SPOT_EXPONENT, &l->SpotExponent );
		  _mesa_Lightfv( lgt, GL_SPOT_CUTOFF, &l->SpotCutoff );
		  _mesa_Lightfv( lgt, GL_CONSTANT_ATTENUATION, 
				 &l->ConstantAttenuation );
		  _mesa_Lightfv( lgt, GL_LINEAR_ATTENUATION, 
				 &l->LinearAttenuation );
		  _mesa_Lightfv( lgt, GL_QUADRATIC_ATTENUATION, 
				 &l->QuadraticAttenuation );
               }
               /* light model */
               _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
                                  light->Model.Ambient);
               _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
                                 (GLfloat) light->Model.LocalViewer);
               _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
                                 (GLfloat) light->Model.TwoSide);
               _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
                                 (GLfloat) light->Model.ColorControl);
               /* materials */
               MEMCPY(ctx->Light.Material, light->Material,
                      2 * sizeof(struct gl_material));
               /* shade model */
               _mesa_ShadeModel(light->ShadeModel);
               /* color material */
               _mesa_ColorMaterial(light->ColorMaterialFace,
                                   light->ColorMaterialMode);
               _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
                                light->ColorMaterialEnabled);
            }
            break;
         case GL_LINE_BIT:
            {
               const struct gl_line_attrib *line;
               line = (const struct gl_line_attrib *) attr->data;
               _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
               _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
               _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
               _mesa_LineWidth(line->Width);
            }
            break;
         case GL_LIST_BIT:
            MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
            break;
         case GL_PIXEL_MODE_BIT:
            MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
	    ctx->NewState |= _NEW_PIXEL;
            break;
         case GL_POINT_BIT:
            {
               const struct gl_point_attrib *point;
               point = (const struct gl_point_attrib *) attr->data;
               _mesa_PointSize(point->Size);
               _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
               if (ctx->Extensions.EXT_point_parameters) {
                  _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
                                            point->Params);
                  _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
                                           point->MinSize);
                  _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
                                           point->MaxSize);
                  _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
                                           point->Threshold);
               }
            }
            break;
         case GL_POLYGON_BIT:
            {
               const struct gl_polygon_attrib *polygon;
               polygon = (const struct gl_polygon_attrib *) attr->data;
               _mesa_CullFace(polygon->CullFaceMode);
               _mesa_FrontFace(polygon->FrontFace);
               _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
               _mesa_PolygonMode(GL_BACK, polygon->BackMode);
               _mesa_PolygonOffset(polygon->OffsetFactor,
                                   polygon->OffsetUnits);
               _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
               _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
               _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
                                polygon->OffsetPoint);
               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
                                polygon->OffsetLine);
               _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
                                polygon->OffsetFill);
            }
            break;
	 case GL_POLYGON_STIPPLE_BIT:
	    MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
	    ctx->NewState |= _NEW_POLYGONSTIPPLE;
	    if (ctx->Driver.PolygonStipple)
	       ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
	    break;
         case GL_SCISSOR_BIT:
            {
               const struct gl_scissor_attrib *scissor;
               scissor = (const struct gl_scissor_attrib *) attr->data;
               _mesa_Scissor(scissor->X, scissor->Y,
                             scissor->Width, scissor->Height);
               _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
            }
            break;
         case GL_STENCIL_BUFFER_BIT:
            {
               const struct gl_stencil_attrib *stencil;
               stencil = (const struct gl_stencil_attrib *) attr->data;
               _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
               _mesa_ClearStencil(stencil->Clear);
               _mesa_StencilFunc(stencil->Function, stencil->Ref,
                                 stencil->ValueMask);
               _mesa_StencilMask(stencil->WriteMask);
               _mesa_StencilOp(stencil->FailFunc, stencil->ZFailFunc,
                               stencil->ZPassFunc);
            }
            break;
         case GL_TRANSFORM_BIT:
            {
               GLuint i;
               const struct gl_transform_attrib *xform;
               xform = (const struct gl_transform_attrib *) attr->data;
               _mesa_MatrixMode(xform->MatrixMode);

               if (ctx->ProjectionMatrix.flags & MAT_DIRTY)
                  _math_matrix_analyse( &ctx->ProjectionMatrix );

               /* restore clip planes */
               for (i = 0; i < MAX_CLIP_PLANES; i++) {
                  const GLfloat *eyePlane = xform->EyeUserPlane[i];
                  COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
                  if (xform->ClipEnabled[i]) {
                     _mesa_transform_vector( ctx->Transform._ClipUserPlane[i],
                                             eyePlane,
                                             ctx->ProjectionMatrix.inv );
                     _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE );
                  }
                  else {
                     _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE );
                  }
                  if (ctx->Driver.ClipPlane)
                     ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
               }

               /* normalize/rescale */
               _mesa_set_enable(ctx, GL_NORMALIZE, ctx->Transform.Normalize);
               _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
                                ctx->Transform.RescaleNormals);
            }
            break;
         case GL_TEXTURE_BIT:
            /* Take care of texture object reference counters */
            {
               const struct gl_texture_attrib *texture;
               texture = (const struct gl_texture_attrib *) attr->data;
               pop_texture_group(ctx, texture);
	       ctx->NewState |= _NEW_TEXTURE;
            }
            break;
         case GL_VIEWPORT_BIT:
            {
               const struct gl_viewport_attrib *vp;
               vp = (const struct gl_viewport_attrib *) attr->data;
               _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
               _mesa_DepthRange(vp->Near, vp->Far);
            }
            break;
         case GL_MULTISAMPLE_BIT_ARB:
            {
               const struct gl_multisample_attrib *ms;
               ms = (const struct gl_multisample_attrib *) attr->data;
               _mesa_SampleCoverageARB(ms->SampleCoverageValue,
                                       ms->SampleCoverageInvert);
            }
            break;

         default:
            _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
            break;
      }

      next = attr->next;
      FREE( attr->data );
      FREE( attr );
      attr = next;
   }
}