diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/radeon_span.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/radeon_span.c | 71 |
1 files changed, 32 insertions, 39 deletions
diff --git a/src/mesa/drivers/dri/r300/radeon_span.c b/src/mesa/drivers/dri/r300/radeon_span.c index 7b548754e6..93c4da9085 100644 --- a/src/mesa/drivers/dri/r300/radeon_span.c +++ b/src/mesa/drivers/dri/r300/radeon_span.c @@ -330,53 +330,46 @@ static void radeonSetBuffer(GLcontext * ctx, GLframebuffer * colorBuffer, GLuint bufferBit) { radeonContextPtr radeon = RADEON_CONTEXT(ctx); + int buffer; switch (bufferBit) { case DD_FRONT_LEFT_BIT: - if (radeon->doPageFlip && radeon->sarea->pfCurrentPage == 1) { - radeon->state.pixel.readOffset = - radeon->radeonScreen->backOffset; - radeon->state.pixel.readPitch = - radeon->radeonScreen->backPitch; - radeon->state.color.drawOffset = - radeon->radeonScreen->backOffset; - radeon->state.color.drawPitch = - radeon->radeonScreen->backPitch; - } else { - radeon->state.pixel.readOffset = - radeon->radeonScreen->frontOffset; - radeon->state.pixel.readPitch = - radeon->radeonScreen->frontPitch; - radeon->state.color.drawOffset = - radeon->radeonScreen->frontOffset; - radeon->state.color.drawPitch = - radeon->radeonScreen->frontPitch; - } + buffer = 0; break; + case DD_BACK_LEFT_BIT: - if (radeon->doPageFlip && radeon->sarea->pfCurrentPage == 1) { - radeon->state.pixel.readOffset = - radeon->radeonScreen->frontOffset; - radeon->state.pixel.readPitch = - radeon->radeonScreen->frontPitch; - radeon->state.color.drawOffset = - radeon->radeonScreen->frontOffset; - radeon->state.color.drawPitch = - radeon->radeonScreen->frontPitch; - } else { - radeon->state.pixel.readOffset = - radeon->radeonScreen->backOffset; - radeon->state.pixel.readPitch = - radeon->radeonScreen->backPitch; - radeon->state.color.drawOffset = - radeon->radeonScreen->backOffset; - radeon->state.color.drawPitch = - radeon->radeonScreen->backPitch; - } + buffer = 1; break; + default: _mesa_problem(ctx, "Bad bufferBit in %s", __FUNCTION__); - break; + return; + } + + if (radeon->doPageFlip && radeon->sarea->pfCurrentPage == 1) + buffer ^= 1; + + fprintf(stderr, "%s: using %s buffer\n", __FUNCTION__, + buffer ? "back" : "front"); + + if (buffer) { + radeon->state.pixel.readOffset = + radeon->radeonScreen->backOffset; + radeon->state.pixel.readPitch = + radeon->radeonScreen->backPitch; + radeon->state.color.drawOffset = + radeon->radeonScreen->backOffset; + radeon->state.color.drawPitch = + radeon->radeonScreen->backPitch; + } else { + radeon->state.pixel.readOffset = + radeon->radeonScreen->frontOffset; + radeon->state.pixel.readPitch = + radeon->radeonScreen->frontPitch; + radeon->state.color.drawOffset = + radeon->radeonScreen->frontOffset; + radeon->state.color.drawPitch = + radeon->radeonScreen->frontPitch; } } |