static void
feedback_vertex(struct gl_context *ctx, const struct draw_context *draw,
                const struct vertex_header *v)
{
   const struct st_context *st = st_context(ctx);
   GLfloat win[4];
   const GLfloat *color, *texcoord;
   GLuint slot;

   /* Recall that Y=0=Top of window for Gallium wincoords */
   win[0] = v->data[0][0];
   win[1] = ctx->DrawBuffer->Height - v->data[0][1];
   win[2] = v->data[0][2];
   win[3] = 1.0F / v->data[0][3];

   /* XXX
    * When we compute vertex layout, save info about position of the
    * color and texcoord attribs to use here.
    */

   slot = st->vertex_result_to_slot[VERT_RESULT_COL0];
   if (slot != ~0U)
      color = v->data[slot];
   else
      color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];

   slot = st->vertex_result_to_slot[VERT_RESULT_TEX0];
   if (slot != ~0U)
      texcoord = v->data[slot];
   else
      texcoord = ctx->Current.Attrib[VERT_ATTRIB_TEX0];

   _mesa_feedback_vertex(ctx, win, color, texcoord);
}
示例#2
0
static void feedback_vertex( GLcontext *ctx,
                             const SWvertex *v, const SWvertex *pv )
{
    const GLuint texUnit = 0;  /* See section 5.3 of 1.2.1 spec */
    GLfloat win[4];
    GLfloat color[4];
    GLfloat tc[4];

    win[0] = v->win[0];
    win[1] = v->win[1];
    win[2] = v->win[2] / ctx->DepthMaxF;
    win[3] = 1.0F / v->win[3];

    color[0] = CHAN_TO_FLOAT(pv->color[0]);
    color[1] = CHAN_TO_FLOAT(pv->color[1]);
    color[2] = CHAN_TO_FLOAT(pv->color[2]);
    color[3] = CHAN_TO_FLOAT(pv->color[3]);

    if (v->texcoord[texUnit][3] != 1.0 &&
            v->texcoord[texUnit][3] != 0.0) {
        GLfloat invq = 1.0F / v->texcoord[texUnit][3];
        tc[0] = v->texcoord[texUnit][0] * invq;
        tc[1] = v->texcoord[texUnit][1] * invq;
        tc[2] = v->texcoord[texUnit][2] * invq;
        tc[3] = v->texcoord[texUnit][3];
    }
    else {
        COPY_4V(tc, v->texcoord[texUnit]);
    }

    _mesa_feedback_vertex( ctx, win, color, (GLfloat) v->index, tc );
}
示例#3
0
/*
 * Execute glDrawPixels
 */
void GLAPIENTRY
_mesa_DrawPixels( GLsizei width, GLsizei height,
                  GLenum format, GLenum type, const GLvoid *pixels )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0" );
      return;
   }

   if (ctx->NewState) {
      _mesa_update_state(ctx);
   }

   if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glDrawPixels (invalid fragment program)");
      return;
   }

   if (error_check_format_type(ctx, format, type, GL_TRUE)) {
      /* found an error */
      return;
   }

   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
                  "glDrawPixels(incomplete framebuffer)" );
      return;
   }

   if (!ctx->Current.RasterPosValid) {
      return;
   }

   if (ctx->RenderMode == GL_RENDER) {
      /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
      GLint x = IROUND(ctx->Current.RasterPos[0]);
      GLint y = IROUND(ctx->Current.RasterPos[1]);
      ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type,
			     &ctx->Unpack, pixels);
   }
   else if (ctx->RenderMode == GL_FEEDBACK) {
      /* Feedback the current raster pos info */
      FLUSH_CURRENT( ctx, 0 );
      FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
      _mesa_feedback_vertex( ctx,
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterIndex,
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }
}
示例#4
0
void
_mesa_Bitmap( GLsizei width, GLsizei height,
              GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
              const GLubyte *bitmap )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );
      return;
   }

   if (ctx->Current.RasterPosValid == GL_FALSE) {
      return;    /* do nothing */
   }

   if (ctx->RenderMode==GL_RENDER) {
      if (bitmap) {
         /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
         GLint x = IFLOOR(ctx->Current.RasterPos[0] - xorig);
         GLint y = IFLOOR(ctx->Current.RasterPos[1] - yorig);

         if (ctx->NewState) {
            _mesa_update_state(ctx);
         }

         ctx->OcclusionResult = GL_TRUE;
	 ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
      }
   }
   else if (ctx->RenderMode==GL_FEEDBACK) {
      if (ctx->Current.RasterPosValid) {
	 FLUSH_CURRENT(ctx, 0);
         FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
         _mesa_feedback_vertex( ctx,
				ctx->Current.RasterPos,
				ctx->Current.RasterColor,
				ctx->Current.RasterIndex, 
				ctx->Current.RasterTexCoord );
      }
   }
   else if (ctx->RenderMode==GL_SELECT) {
      /* Bitmaps don't generate selection hits.  See appendix B of 1.1 spec. */
   }

   /* update raster position */
   ctx->Current.RasterPos[0] += xmove;
   ctx->Current.RasterPos[1] += ymove;
}
示例#5
0
static void
feedback_vertex(struct gl_context * ctx, const SWvertex * v, const SWvertex * pv)
{
   GLfloat win[4];
   const GLfloat *vtc = v->attrib[VARYING_SLOT_TEX0];
   const GLfloat *color = v->attrib[VARYING_SLOT_COL0];

   win[0] = v->attrib[VARYING_SLOT_POS][0];
   win[1] = v->attrib[VARYING_SLOT_POS][1];
   win[2] = v->attrib[VARYING_SLOT_POS][2] / ctx->DrawBuffer->_DepthMaxF;
   win[3] = 1.0F / v->attrib[VARYING_SLOT_POS][3];

   _mesa_feedback_vertex(ctx, win, color, vtc);
}
static void
feedback_vertex(GLcontext * ctx, const SWvertex * v, const SWvertex * pv)
{
   GLfloat win[4];
   const GLfloat *vtc = v->attrib[FRAG_ATTRIB_TEX0];
   const GLfloat *color = v->attrib[FRAG_ATTRIB_COL0];

   win[0] = v->attrib[FRAG_ATTRIB_WPOS][0];
   win[1] = v->attrib[FRAG_ATTRIB_WPOS][1];
   win[2] = v->attrib[FRAG_ATTRIB_WPOS][2] / ctx->DrawBuffer->_DepthMaxF;
   win[3] = 1.0F / v->attrib[FRAG_ATTRIB_WPOS][3];

   _mesa_feedback_vertex(ctx, win, color, v->attrib[FRAG_ATTRIB_CI][0], vtc);
}
示例#7
0
/*
 * Execute glDrawPixels
 */
void
_mesa_DrawPixels( GLsizei width, GLsizei height,
                  GLenum format, GLenum type, const GLvoid *pixels )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0" );
      return;
   }

   if (ctx->RenderMode==GL_RENDER) {
      GLint x, y;
      if (!pixels || !ctx->Current.RasterPosValid) {
	 return;
      }

      if (ctx->NewState) {
         _mesa_update_state(ctx);
      }

      /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
      x = IROUND(ctx->Current.RasterPos[0]);
      y = IROUND(ctx->Current.RasterPos[1]);

      ctx->OcclusionResult = GL_TRUE;
      ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type,
			     &ctx->Unpack, pixels);
   }
   else if (ctx->RenderMode==GL_FEEDBACK) {
      if (ctx->Current.RasterPosValid) {
	 FLUSH_CURRENT(ctx, 0);
         FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
         _mesa_feedback_vertex( ctx,
				ctx->Current.RasterPos,
				ctx->Current.RasterColor,
				ctx->Current.RasterIndex, 
				ctx->Current.RasterTexCoord );
      }
   }
   else if (ctx->RenderMode==GL_SELECT) {
      if (ctx->Current.RasterPosValid) {
         _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
      }
   }
}
示例#8
0
void
_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
                  GLenum type )
{
   GET_CURRENT_CONTEXT(ctx);
   GLint destx, desty;
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)" );
      return;
   }

   if (ctx->NewState) {
      _mesa_update_state(ctx);
   }

   if (ctx->RenderMode==GL_RENDER) {
      /* Destination of copy: */
      if (!ctx->Current.RasterPosValid) {
	 return;
      }

      /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
      destx = IROUND(ctx->Current.RasterPos[0]);
      desty = IROUND(ctx->Current.RasterPos[1]);

      ctx->OcclusionResult = GL_TRUE;

      ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
			      type );
   }
   else if (ctx->RenderMode == GL_FEEDBACK) {
      if (ctx->Current.RasterPosValid) {
	 FLUSH_CURRENT(ctx, 0);
         FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
         _mesa_feedback_vertex( ctx,
				ctx->Current.RasterPos,
				ctx->Current.RasterColor,
				ctx->Current.RasterIndex, 
				ctx->Current.RasterTexCoord );
      }
   }
   else if (ctx->RenderMode == GL_SELECT) {
      _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
   }
}
示例#9
0
/*
 * Execute glDrawPixels
 */
static void GLAPIENTRY
_mesa_DrawPixels( GLsizei width, GLsizei height,
                  GLenum format, GLenum type, const GLvoid *pixels )
{
   GLenum err;
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (MESA_VERBOSE & VERBOSE_API)
      _mesa_debug(ctx, "glDrawPixels(%d, %d, %s, %s, %p) // to %s at %d, %d\n",
                  width, height,
                  _mesa_lookup_enum_by_nr(format),
                  _mesa_lookup_enum_by_nr(type),
                  pixels,
                  _mesa_lookup_enum_by_nr(ctx->DrawBuffer->ColorDrawBuffer[0]),
                  IROUND(ctx->Current.RasterPos[0]),
                  IROUND(ctx->Current.RasterPos[1]));


   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0)" );
      return;
   }

   /* We're not using the current vertex program, and the driver may install
    * its own.  Note: this may dirty some state.
    */
   _mesa_set_vp_override(ctx, GL_TRUE);

   /* Note: this call does state validation */
   if (!_mesa_valid_to_render(ctx, "glDrawPixels")) {
      goto end;      /* the error code was recorded */
   }

   /* GL 3.0 introduced a new restriction on glDrawPixels() over what was in
    * GL_EXT_texture_integer.  From section 3.7.4 ("Rasterization of Pixel
    * Rectangles) on page 151 of the GL 3.0 specification:
    *
    *     "If format contains integer components, as shown in table 3.6, an
    *      INVALID OPERATION error is generated."
    *
    * Since DrawPixels rendering would be merely undefined if not an error (due
    * to a lack of defined mapping from integer data to gl_Color fragment shader
    * input), NVIDIA's implementation also just returns this error despite
    * exposing GL_EXT_texture_integer, just return an error regardless.
    */
   if (_mesa_is_enum_format_integer(format)) {
      _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels(integer format)");
      goto end;
   }

   err = _mesa_error_check_format_and_type(ctx, format, type);
   if (err != GL_NO_ERROR) {
      _mesa_error(ctx, err, "glDrawPixels(invalid format %s and/or type %s)",
                  _mesa_lookup_enum_by_nr(format),
                  _mesa_lookup_enum_by_nr(type));
      goto end;
   }

   /* do special format-related checks */
   switch (format) {
   case GL_STENCIL_INDEX:
   case GL_DEPTH_COMPONENT:
   case GL_DEPTH_STENCIL_EXT:
      /* these buffers must exist */
      if (!_mesa_dest_buffer_exists(ctx, format)) {
         _mesa_error(ctx, GL_INVALID_OPERATION,
                     "glDrawPixels(missing deest buffer)");
         goto end;
      }
      break;
   case GL_COLOR_INDEX:
      if (ctx->PixelMaps.ItoR.Size == 0 ||
          ctx->PixelMaps.ItoG.Size == 0 ||
          ctx->PixelMaps.ItoB.Size == 0) {
         _mesa_error(ctx, GL_INVALID_OPERATION,
                "glDrawPixels(drawing color index pixels into RGB buffer)");
         goto end;
      }
      break;
   default:
      /* for color formats it's not an error if the destination color
       * buffer doesn't exist.
       */
      break;
   }

   if (ctx->RasterDiscard) {
      goto end;
   }

   if (!ctx->Current.RasterPosValid) {
      goto end;  /* no-op, not an error */
   }

   if (ctx->RenderMode == GL_RENDER) {
      if (width > 0 && height > 0) {
         /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
         GLint x = IROUND(ctx->Current.RasterPos[0]);
         GLint y = IROUND(ctx->Current.RasterPos[1]);

         if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
            /* unpack from PBO */
            if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height,
                                           1, format, type, INT_MAX, pixels)) {
               _mesa_error(ctx, GL_INVALID_OPERATION,
                           "glDrawPixels(invalid PBO access)");
               goto end;
            }
            if (_mesa_bufferobj_mapped(ctx->Unpack.BufferObj)) {
               /* buffer is mapped - that's an error */
               _mesa_error(ctx, GL_INVALID_OPERATION,
                           "glDrawPixels(PBO is mapped)");
               goto end;
            }
         }

         ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type,
                                &ctx->Unpack, pixels);
      }
   }
   else if (ctx->RenderMode == GL_FEEDBACK) {
      /* Feedback the current raster pos info */
      FLUSH_CURRENT( ctx, 0 );
      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
      _mesa_feedback_vertex( ctx,
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }

end:
   _mesa_set_vp_override(ctx, GL_FALSE);

   if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
      _mesa_flush(ctx);
   }
}
示例#10
0
static void GLAPIENTRY
_mesa_Bitmap( GLsizei width, GLsizei height,
              GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
              const GLubyte *bitmap )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );
      return;
   }

   if (!ctx->Current.RasterPosValid) {
      return;    /* do nothing */
   }

   /* Note: this call does state validation */
   if (!_mesa_valid_to_render(ctx, "glBitmap")) {
      /* the error code was recorded */
      return;
   }

   if (ctx->RasterDiscard)
      return;

   if (ctx->RenderMode == GL_RENDER) {
      /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
      if (width > 0 && height > 0) {
         const GLfloat epsilon = 0.0001F;
         GLint x = IFLOOR(ctx->Current.RasterPos[0] + epsilon - xorig);
         GLint y = IFLOOR(ctx->Current.RasterPos[1] + epsilon - yorig);

         if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
            /* unpack from PBO */
            if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height,
                                           1, GL_COLOR_INDEX, GL_BITMAP,
                                           INT_MAX, (const GLvoid *) bitmap)) {
               _mesa_error(ctx, GL_INVALID_OPERATION,
                           "glBitmap(invalid PBO access)");
               return;
            }
            if (_mesa_bufferobj_mapped(ctx->Unpack.BufferObj)) {
               /* buffer is mapped - that's an error */
               _mesa_error(ctx, GL_INVALID_OPERATION,
                           "glBitmap(PBO is mapped)");
               return;
            }
         }

         ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
      }
   }
#if _HAVE_FULL_GL
   else if (ctx->RenderMode == GL_FEEDBACK) {
      FLUSH_CURRENT(ctx, 0);
      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
      _mesa_feedback_vertex( ctx,
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }
#endif

   /* update raster position */
   ctx->Current.RasterPos[0] += xmove;
   ctx->Current.RasterPos[1] += ymove;

   if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
      _mesa_flush(ctx);
   }
}
示例#11
0
static void GLAPIENTRY
_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
                  GLenum type )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (MESA_VERBOSE & VERBOSE_API)
      _mesa_debug(ctx,
                  "glCopyPixels(%d, %d, %d, %d, %s) // from %s to %s at %d, %d\n",
                  srcx, srcy, width, height,
                  _mesa_lookup_enum_by_nr(type),
                  _mesa_lookup_enum_by_nr(ctx->ReadBuffer->ColorReadBuffer),
                  _mesa_lookup_enum_by_nr(ctx->DrawBuffer->ColorDrawBuffer[0]),
                  IROUND(ctx->Current.RasterPos[0]),
                  IROUND(ctx->Current.RasterPos[1]));

   if (width < 0 || height < 0) {
      _mesa_error(ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)");
      return;
   }

   /* Note: more detailed 'type' checking is done by the
    * _mesa_source/dest_buffer_exists() calls below.  That's where we
    * check if the stencil buffer exists, etc.
    */
   if (type != GL_COLOR &&
       type != GL_DEPTH &&
       type != GL_STENCIL &&
       type != GL_DEPTH_STENCIL) {
      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyPixels(type=%s)",
                  _mesa_lookup_enum_by_nr(type));
      return;
   }

   /* We're not using the current vertex program, and the driver may install
    * it's own.  Note: this may dirty some state.
    */
   _mesa_set_vp_override(ctx, GL_TRUE);

   /* Note: this call does state validation */
   if (!_mesa_valid_to_render(ctx, "glCopyPixels")) {
      goto end;      /* the error code was recorded */
   }

   /* Check read buffer's status (draw buffer was already checked) */
   if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
                  "glCopyPixels(incomplete framebuffer)" );
      goto end;
   }

   if (_mesa_is_user_fbo(ctx->ReadBuffer) &&
       ctx->ReadBuffer->Visual.samples > 0) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
		  "glCopyPixels(multisample FBO)");
      goto end;
   }

   if (!_mesa_source_buffer_exists(ctx, type) ||
       !_mesa_dest_buffer_exists(ctx, type)) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glCopyPixels(missing source or dest buffer)");
      goto end;
   }

   if (ctx->RasterDiscard) {
      goto end;
   }

   if (!ctx->Current.RasterPosValid || width == 0 || height == 0) {
      goto end; /* no-op, not an error */
   }

   if (ctx->RenderMode == GL_RENDER) {
      /* Round to satisfy conformance tests (matches SGI's OpenGL) */
      if (width > 0 && height > 0) {
         GLint destx = IROUND(ctx->Current.RasterPos[0]);
         GLint desty = IROUND(ctx->Current.RasterPos[1]);
         ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
                                 type );
      }
   }
   else if (ctx->RenderMode == GL_FEEDBACK) {
      FLUSH_CURRENT( ctx, 0 );
      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
      _mesa_feedback_vertex( ctx, 
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }

end:
   _mesa_set_vp_override(ctx, GL_FALSE);

   if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
      _mesa_flush(ctx);
   }
}
示例#12
0
/*
 * Execute glDrawPixels
 */
static void GLAPIENTRY
_mesa_DrawPixels( GLsizei width, GLsizei height,
                  GLenum format, GLenum type, const GLvoid *pixels )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0" );
      return;
   }

   /* We're not using the current vertex program, and the driver may install
    * it's own.
    */
   _mesa_set_vp_override(ctx, GL_TRUE);

   if (ctx->NewState) {
      _mesa_update_state(ctx);
   }

   if (!valid_fragment_program(ctx)) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glDrawPixels (invalid fragment program)");
      goto end;
   }

   if (_mesa_error_check_format_type(ctx, format, type, GL_TRUE)) {
      /* the error was already recorded */
      goto end;
   }

   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
                  "glDrawPixels(incomplete framebuffer)" );
      goto end;
   }

   if (!ctx->Current.RasterPosValid) {
      goto end; /* no-op, not an error */
   }

   if (ctx->RenderMode == GL_RENDER) {
      if (width > 0 && height > 0) {
         /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
         GLint x = IROUND(ctx->Current.RasterPos[0]);
         GLint y = IROUND(ctx->Current.RasterPos[1]);

         if (ctx->Unpack.BufferObj->Name) {
            /* unpack from PBO */
            if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1,
                                           format, type, pixels)) {
               _mesa_error(ctx, GL_INVALID_OPERATION,
                           "glDrawPixels(invalid PBO access)");
               goto end;
            }
            if (_mesa_bufferobj_mapped(ctx->Unpack.BufferObj)) {
               /* buffer is mapped - that's an error */
               _mesa_error(ctx, GL_INVALID_OPERATION,
                           "glDrawPixels(PBO is mapped)");
               goto end;
            }
         }

         ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type,
                                &ctx->Unpack, pixels);
      }
   }
   else if (ctx->RenderMode == GL_FEEDBACK) {
      /* Feedback the current raster pos info */
      FLUSH_CURRENT( ctx, 0 );
      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
      _mesa_feedback_vertex( ctx,
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterIndex,
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }

end:
   _mesa_set_vp_override(ctx, GL_FALSE);
}
示例#13
0
static void GLAPIENTRY
_mesa_Bitmap( GLsizei width, GLsizei height,
              GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
              const GLubyte *bitmap )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );
      return;
   }

   if (!ctx->Current.RasterPosValid) {
      return;    /* do nothing */
   }

   if (ctx->NewState) {
      _mesa_update_state(ctx);
   }

   if (!valid_fragment_program(ctx)) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glBitmap (invalid fragment program)");
      return;
   }

   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
                  "glBitmap(incomplete framebuffer)");
      return;
   }

   if (ctx->RenderMode == GL_RENDER) {
      /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
      if (width > 0 && height > 0) {
         const GLfloat epsilon = 0.0001F;
         GLint x = IFLOOR(ctx->Current.RasterPos[0] + epsilon - xorig);
         GLint y = IFLOOR(ctx->Current.RasterPos[1] + epsilon - yorig);

         if (ctx->Unpack.BufferObj->Name) {
            /* unpack from PBO */
            if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1,
                                           GL_COLOR_INDEX, GL_BITMAP,
                                           (GLvoid *) bitmap)) {
               _mesa_error(ctx, GL_INVALID_OPERATION,
                           "glBitmap(invalid PBO access)");
               return;
            }
            if (_mesa_bufferobj_mapped(ctx->Unpack.BufferObj)) {
               /* buffer is mapped - that's an error */
               _mesa_error(ctx, GL_INVALID_OPERATION,
                           "glBitmap(PBO is mapped)");
               return;
            }
         }

         ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
      }
   }
#if _HAVE_FULL_GL
   else if (ctx->RenderMode == GL_FEEDBACK) {
      FLUSH_CURRENT(ctx, 0);
      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
      _mesa_feedback_vertex( ctx,
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterIndex, 
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }
#endif

   /* update raster position */
   ctx->Current.RasterPos[0] += xmove;
   ctx->Current.RasterPos[1] += ymove;
}
示例#14
0
static void GLAPIENTRY
_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
                  GLenum type )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error(ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)");
      return;
   }

   /* Note: more detailed 'type' checking is done by the
    * _mesa_source/dest_buffer_exists() calls below.  That's where we
    * check if the stencil buffer exists, etc.
    */
   if (type != GL_COLOR &&
       type != GL_DEPTH &&
       type != GL_STENCIL &&
       type != GL_DEPTH_STENCIL) {
      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyPixels(type=%s)",
                  _mesa_lookup_enum_by_nr(type));
      return;
   }

   /* We're not using the current vertex program, and the driver may install
    * it's own.
    */
   _mesa_set_vp_override(ctx, GL_TRUE);

   if (ctx->NewState) {
      _mesa_update_state(ctx);
   }

   if (!valid_fragment_program(ctx)) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glCopyPixels (invalid fragment program)");
      goto end;
   }

   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
       ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
                  "glCopyPixels(incomplete framebuffer)" );
      goto end;
   }

   if (!_mesa_source_buffer_exists(ctx, type) ||
       !_mesa_dest_buffer_exists(ctx, type)) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glCopyPixels(missing source or dest buffer)");
      goto end;
   }

   if (!ctx->Current.RasterPosValid || width ==0 || height == 0) {
      goto end; /* no-op, not an error */
   }

   if (ctx->RenderMode == GL_RENDER) {
      /* Round to satisfy conformance tests (matches SGI's OpenGL) */
      if (width > 0 && height > 0) {
         GLint destx = IROUND(ctx->Current.RasterPos[0]);
         GLint desty = IROUND(ctx->Current.RasterPos[1]);
         ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
                                 type );
      }
   }
   else if (ctx->RenderMode == GL_FEEDBACK) {
      FLUSH_CURRENT( ctx, 0 );
      _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
      _mesa_feedback_vertex( ctx, 
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterIndex,
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }

end:
   _mesa_set_vp_override(ctx, GL_FALSE);
}
示例#15
0
void GLAPIENTRY
_mesa_Bitmap( GLsizei width, GLsizei height,
              GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
              const GLubyte *bitmap )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (width < 0 || height < 0) {
      _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );
      return;
   }

   if (!ctx->Current.RasterPosValid) {
      return;    /* do nothing */
   }

   if (ctx->NewState) {
      _mesa_update_state(ctx);
   }

   if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glBitmap (invalid fragment program)");
      return;
   }

   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
                  "glBitmap(incomplete framebuffer)");
      return;
   }

   if (ctx->RenderMode == GL_RENDER) {
      if (bitmap) {
         /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
         GLint x = IFLOOR(ctx->Current.RasterPos[0] - xorig);
         GLint y = IFLOOR(ctx->Current.RasterPos[1] - yorig);
         ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
      }
   }
#if _HAVE_FULL_GL
   else if (ctx->RenderMode == GL_FEEDBACK) {
      FLUSH_CURRENT(ctx, 0);
      FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
      _mesa_feedback_vertex( ctx,
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterIndex, 
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }
#endif

   /* update raster position */
   ctx->Current.RasterPos[0] += xmove;
   ctx->Current.RasterPos[1] += ymove;
}
示例#16
0
void GLAPIENTRY
_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
                  GLenum type )
{
   GET_CURRENT_CONTEXT(ctx);
   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);

   if (ctx->NewState) {
      _mesa_update_state(ctx);
   }

   if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glCopyPixels (invalid fragment program)");
      return;
   }

   if (width < 0 || height < 0) {
      _mesa_error(ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)");
      return;
   }

   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
       ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
                  "glCopyPixels(incomplete framebuffer)" );
      return;
   }

   if (!_mesa_source_buffer_exists(ctx, type) ||
       !_mesa_dest_buffer_exists(ctx, type)) {
      _mesa_error(ctx, GL_INVALID_OPERATION,
                  "glCopyPixels(missing source or dest buffer)");
      return;
   }

   if (!ctx->Current.RasterPosValid) {
      return;
   }

   if (ctx->RenderMode == GL_RENDER) {
      /* Round to satisfy conformance tests (matches SGI's OpenGL) */
      GLint destx = IROUND(ctx->Current.RasterPos[0]);
      GLint desty = IROUND(ctx->Current.RasterPos[1]);
      ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
			      type );
   }
   else if (ctx->RenderMode == GL_FEEDBACK) {
      FLUSH_CURRENT( ctx, 0 );
      FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
      _mesa_feedback_vertex( ctx, 
                             ctx->Current.RasterPos,
                             ctx->Current.RasterColor,
                             ctx->Current.RasterIndex,
                             ctx->Current.RasterTexCoords[0] );
   }
   else {
      ASSERT(ctx->RenderMode == GL_SELECT);
      /* Do nothing.  See OpenGL Spec, Appendix B, Corollary 6. */
   }
}