diff options
| -rw-r--r-- | docs/RELNOTES-4.1 | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/docs/RELNOTES-4.1 b/docs/RELNOTES-4.1 index 199d51d..3df2738 100644 --- a/docs/RELNOTES-4.1 +++ b/docs/RELNOTES-4.1 @@ -219,25 +219,32 @@ are some things to change: Here are the changes: - - Rename ctx->Color.DrawDestMask to ctx->Color._DrawDestMask - - Rename ctx->Color.DriverDrawBuffer to ctx->Color._DriverDrawBuffer - - Rename ctx->Pixel.DriverReadBuffer to ctx->Pixel._DriverReadBuffer + - Renamed ctx->Color.DrawDestMask to ctx->Color._DrawDestMask + - Removed ctx->Color.DriverDrawBuffer + - Removed ctx->Pixel.DriverReadBuffer - Removed ctx->Color.MultiDrawBuffer - - Removed ctx->Driver.SetDrawBuffer - - Added ctx->Driver.DrawBuffer and ctx->Driver.ReadBuffer. These functions - exactly correspond to glDrawBuffer and glReadBuffer calls. + - Removed ctx->Driver.SetDrawBuffer() + - Removed swrast->Driver.SetReadBuffer(). + - Added ctx->Color._DrawDestMask - a bitmask of FRONT/BACK_LEFT/RIGHT_BIT + values to indicate the current draw buffers. + - Added ctx->Pixel._ReadSrcMask to indicate the source for pixel reading. + The value is _one_ of the FRONT/BACK_LEFT/RIGHT_BIT values. + - Added ctx->Driver.DrawBuffer() and ctx->Driver.ReadBuffer(). + These functions exactly correspond to glDrawBuffer and glReadBuffer calls. Many drivers will set ctx->Driver.DrawBuffer = _swrast_DrawBuffer and leave ctx->Draw.ReadBuffer NULL. DRI drivers should implement their own function for ctx->Driver.DrawBuffer and use it to set the current hardware drawing buffer. You'll probably also want to check for GL_FRONT_AND_BACK mode and fall back to software. Call _swrast_DrawBuffer() too, to update the swrast state. - - Removed swrast->Driver.SetReadBuffer - - Added swrast->Driver.SetBuffer. This function should be implemented by - all device drivers that use swrast fallbacks (and the span functions). - Mesa will call this function to specify the buffer to use for span - reading AND writing and point/line/triangle rendering. There - should be no confusion between current read or draw buffer anymore. + - Added swrast->Driver.SetBuffer(). + This function should be implemented by all device drivers that use swrast. + Mesa will call it to specify the buffer to use for span reading AND + writing and point/line/triangle rendering. + There should be no confusion between current read or draw buffer anymore. + - Added swrast->CurrentBuffer to indicate which color buffer to read/draw. + Will be FRONT_LEFT_BIT, BACK_LEFT_BIT, FRONT_RIGHT_BIT or BACK_RIGHT_BIT. + This value is usually passed to swrast->Driver.SetBuffer(). 4. _mesa_create_context() changes. This function now takes a pointer to @@ -293,4 +300,4 @@ are some things to change: ---------------------------------------------------------------------- -$Id: RELNOTES-4.1,v 1.19 2002/10/10 23:49:02 brianp Exp $ +$Id: RELNOTES-4.1,v 1.20 2002/10/11 17:42:48 brianp Exp $ |