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Diffstat (limited to 'src/mesa/drivers/dri/i830/i830_span.c')
-rw-r--r--src/mesa/drivers/dri/i830/i830_span.c370
1 files changed, 370 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i830/i830_span.c b/src/mesa/drivers/dri/i830/i830_span.c
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+++ b/src/mesa/drivers/dri/i830/i830_span.c
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+/**************************************************************************
+
+Copyright 2001 VA Linux Systems Inc., Fremont, California.
+
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+on the rights to use, copy, modify, merge, publish, distribute, sub
+license, and/or sell copies of the Software, and to permit persons to whom
+the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ATI, VA LINUX SYSTEMS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+**************************************************************************/
+
+/* $XFree86: xc/lib/GL/mesa/src/drv/i830/i830_span.c,v 1.4 2002/12/10 01:26:53 dawes Exp $ */
+
+/*
+ * Author:
+ * Jeff Hartmann <jhartmann@2d3d.com>
+ *
+ * Heavily based on the I810 driver, which was written by:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "glheader.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "colormac.h"
+
+#include "i830_screen.h"
+#include "i830_dri.h"
+
+#include "i830_span.h"
+#include "i830_ioctl.h"
+#include "swrast/swrast.h"
+
+
+#define DBG 0
+
+#define LOCAL_VARS \
+ i830ContextPtr imesa = I830_CONTEXT(ctx); \
+ __DRIdrawablePrivate *dPriv = imesa->driDrawable; \
+ i830ScreenPrivate *i830Screen = imesa->i830Screen; \
+ GLuint pitch = i830Screen->backPitch * i830Screen->cpp; \
+ GLuint height = dPriv->h; \
+ char *buf = (char *)(imesa->drawMap + \
+ dPriv->x * i830Screen->cpp + \
+ dPriv->y * pitch); \
+ char *read_buf = (char *)(imesa->readMap + \
+ dPriv->x * i830Screen->cpp + \
+ dPriv->y * pitch); \
+ GLushort p; \
+ (void) read_buf; (void) buf; (void) p
+
+#define LOCAL_DEPTH_VARS \
+ i830ContextPtr imesa = I830_CONTEXT(ctx); \
+ __DRIdrawablePrivate *dPriv = imesa->driDrawable; \
+ i830ScreenPrivate *i830Screen = imesa->i830Screen; \
+ GLuint pitch = i830Screen->backPitch * i830Screen->cpp; \
+ GLuint height = dPriv->h; \
+ char *buf = (char *)(i830Screen->depth.map + \
+ dPriv->x * i830Screen->cpp + \
+ dPriv->y * pitch)
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
+
+#define INIT_MONO_PIXEL(p,color)\
+ p = PACK_COLOR_565(color[0],color[1],color[2])
+
+#define CLIPPIXEL(_x,_y) (_x >= minx && _x < maxx && \
+ _y >= miny && _y < maxy)
+
+#define CLIPSPAN( _x, _y, _n, _x1, _n1, _i ) \
+ if ( _y < miny || _y >= maxy ) { \
+ _n1 = 0, _x1 = x; \
+ } else { \
+ _n1 = _n; \
+ _x1 = _x; \
+ if ( _x1 < minx ) _i += (minx-_x1), n1 -= (minx-_x1), _x1 = minx; \
+ if ( _x1 + _n1 >= maxx ) n1 -= (_x1 + n1 - maxx); \
+ }
+
+#define Y_FLIP(_y) (height - _y - 1)
+
+
+#define HW_LOCK()
+
+#define HW_CLIPLOOP() \
+ do { \
+ __DRIdrawablePrivate *dPriv = imesa->driDrawable; \
+ int _nc = dPriv->numClipRects; \
+ while (_nc--) { \
+ int minx = dPriv->pClipRects[_nc].x1 - dPriv->x; \
+ int miny = dPriv->pClipRects[_nc].y1 - dPriv->y; \
+ int maxx = dPriv->pClipRects[_nc].x2 - dPriv->x; \
+ int maxy = dPriv->pClipRects[_nc].y2 - dPriv->y;
+
+
+#define HW_ENDCLIPLOOP() \
+ } \
+ } while (0)
+
+#define HW_UNLOCK()
+
+/* 16 bit, 565 rgb color spanline and pixel functions
+ */
+#define WRITE_RGBA( _x, _y, r, g, b, a ) \
+ *(GLushort *)(buf + _x*2 + _y*pitch) = ( (((int)r & 0xf8) << 8) | \
+ (((int)g & 0xfc) << 3) | \
+ (((int)b & 0xf8) >> 3))
+#define WRITE_PIXEL( _x, _y, p ) \
+ *(GLushort *)(buf + _x*2 + _y*pitch) = p
+
+#define READ_RGBA( rgba, _x, _y ) \
+do { \
+ GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch); \
+ rgba[0] = (((p >> 11) & 0x1f) * 255) / 31; \
+ rgba[1] = (((p >> 5) & 0x3f) * 255) / 63; \
+ rgba[2] = (((p >> 0) & 0x1f) * 255) / 31; \
+ rgba[3] = 255; \
+} while(0)
+
+#define TAG(x) i830##x##_565
+#include "spantmp.h"
+
+
+
+
+/* 15 bit, 555 rgb color spanline and pixel functions
+ */
+#define WRITE_RGBA( _x, _y, r, g, b, a ) \
+ *(GLushort *)(buf + _x*2 + _y*pitch) = (((r & 0xf8) << 7) | \
+ ((g & 0xf8) << 3) | \
+ ((b & 0xf8) >> 3))
+
+#define WRITE_PIXEL( _x, _y, p ) \
+ *(GLushort *)(buf + _x*2 + _y*pitch) = p
+
+#define READ_RGBA( rgba, _x, _y ) \
+do { \
+ GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch); \
+ rgba[0] = (p >> 7) & 0xf8; \
+ rgba[1] = (p >> 3) & 0xf8; \
+ rgba[2] = (p << 3) & 0xf8; \
+ rgba[3] = 255; \
+} while(0)
+
+#define TAG(x) i830##x##_555
+#include "spantmp.h"
+
+/* 16 bit depthbuffer functions.
+ */
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLushort *)(buf + _x*2 + _y*pitch) = d;
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLushort *)(buf + _x*2 + _y*pitch);
+
+
+#define TAG(x) i830##x##_16
+#include "depthtmp.h"
+
+
+#undef LOCAL_VARS
+#define LOCAL_VARS \
+ i830ContextPtr imesa = I830_CONTEXT(ctx); \
+ __DRIdrawablePrivate *dPriv = imesa->driDrawable; \
+ i830ScreenPrivate *i830Screen = imesa->i830Screen; \
+ GLuint pitch = i830Screen->backPitch * i830Screen->cpp; \
+ GLuint height = dPriv->h; \
+ char *buf = (char *)(imesa->drawMap + \
+ dPriv->x * i830Screen->cpp + \
+ dPriv->y * pitch); \
+ char *read_buf = (char *)(imesa->readMap + \
+ dPriv->x * i830Screen->cpp + \
+ dPriv->y * pitch); \
+ GLuint p = I830_CONTEXT( ctx )->MonoColor; \
+ (void) read_buf; (void) buf; (void) p
+
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p,color)\
+ p = PACK_COLOR_888(color[0],color[1],color[2])
+
+/* 32 bit, 8888 argb color spanline and pixel functions
+ */
+#define WRITE_RGBA(_x, _y, r, g, b, a) \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = ((r << 16) | \
+ (g << 8) | \
+ (b << 0) | \
+ (a << 24) )
+
+#define WRITE_PIXEL(_x, _y, p) \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = p
+
+
+#define READ_RGBA(rgba, _x, _y) \
+ do { \
+ GLuint p = *(GLuint *)(read_buf + _x*4 + _y*pitch); \
+ rgba[0] = (p >> 16) & 0xff; \
+ rgba[1] = (p >> 8) & 0xff; \
+ rgba[2] = (p >> 0) & 0xff; \
+ rgba[3] = (p >> 24) & 0xff; \
+ } while (0)
+
+#define TAG(x) i830##x##_8888
+#include "spantmp.h"
+
+/* 24 bit depthbuffer functions.
+ */
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = 0xffffff & d;
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xffffff;
+
+#define TAG(x) i830##x##_24
+#include "depthtmp.h"
+
+/* 24/8 bit interleaved depth/stencil functions
+ */
+#define WRITE_DEPTH( _x, _y, d ) { \
+ GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \
+ tmp &= 0xff000000; \
+ tmp |= (d) & 0xffffff; \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \
+}
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xffffff;
+
+
+#define TAG(x) i830##x##_24_8
+#include "depthtmp.h"
+
+#define WRITE_STENCIL( _x, _y, d ) { \
+ GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \
+ tmp &= 0xffffff; \
+ tmp |= (d<<24); \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \
+}
+
+#define READ_STENCIL( d, _x, _y ) \
+ d = *(GLuint *)(buf + _x*4 + _y*pitch) >> 24;
+
+#define TAG(x) i830##x##_24_8
+#include "stenciltmp.h"
+
+/*
+ * This function is called to specify which buffer to read and write
+ * for software rasterization (swrast) fallbacks. This doesn't necessarily
+ * correspond to glDrawBuffer() or glReadBuffer() calls.
+ */
+static void i830SetBuffer(GLcontext *ctx, GLframebuffer *colorBuffer,
+ GLuint bufferBit)
+{
+ i830ContextPtr imesa = I830_CONTEXT(ctx);
+ if (bufferBit == FRONT_LEFT_BIT) {
+ imesa->drawMap = (char *)imesa->driScreen->pFB;
+ imesa->readMap = (char *)imesa->driScreen->pFB;
+ } else if (bufferBit == BACK_LEFT_BIT) {
+ imesa->drawMap = imesa->i830Screen->back.map;
+ imesa->readMap = imesa->i830Screen->back.map;
+ } else {
+ ASSERT(0);
+ }
+}
+
+
+
+/* Move locking out to get reasonable span performance.
+ */
+void i830SpanRenderStart( GLcontext *ctx )
+{
+ i830ContextPtr imesa = I830_CONTEXT(ctx);
+ I830_FIREVERTICES(imesa);
+ LOCK_HARDWARE(imesa);
+ i830RegetLockQuiescent( imesa );
+}
+
+void i830SpanRenderFinish( GLcontext *ctx )
+{
+ i830ContextPtr imesa = I830_CONTEXT( ctx );
+ _swrast_flush( ctx );
+ UNLOCK_HARDWARE( imesa );
+}
+
+void i830DDInitSpanFuncs( GLcontext *ctx )
+{
+ i830ContextPtr imesa = I830_CONTEXT(ctx);
+ i830ScreenPrivate *i830Screen = imesa->i830Screen;
+
+ struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+
+ swdd->SetBuffer = i830SetBuffer;
+
+ switch (i830Screen->fbFormat) {
+ case DV_PF_555:
+ swdd->WriteRGBASpan = i830WriteRGBASpan_555;
+ swdd->WriteRGBSpan = i830WriteRGBSpan_555;
+ swdd->WriteMonoRGBASpan = i830WriteMonoRGBASpan_555;
+ swdd->WriteRGBAPixels = i830WriteRGBAPixels_555;
+ swdd->WriteMonoRGBAPixels = i830WriteMonoRGBAPixels_555;
+ swdd->ReadRGBASpan = i830ReadRGBASpan_555;
+ swdd->ReadRGBAPixels = i830ReadRGBAPixels_555;
+
+ swdd->ReadDepthSpan = i830ReadDepthSpan_16;
+ swdd->WriteDepthSpan = i830WriteDepthSpan_16;
+ swdd->ReadDepthPixels = i830ReadDepthPixels_16;
+ swdd->WriteDepthPixels = i830WriteDepthPixels_16;
+ break;
+
+ case DV_PF_565:
+ swdd->WriteRGBASpan = i830WriteRGBASpan_565;
+ swdd->WriteRGBSpan = i830WriteRGBSpan_565;
+ swdd->WriteMonoRGBASpan = i830WriteMonoRGBASpan_565;
+ swdd->WriteRGBAPixels = i830WriteRGBAPixels_565;
+ swdd->WriteMonoRGBAPixels = i830WriteMonoRGBAPixels_565;
+ swdd->ReadRGBASpan = i830ReadRGBASpan_565;
+ swdd->ReadRGBAPixels = i830ReadRGBAPixels_565;
+
+ swdd->ReadDepthSpan = i830ReadDepthSpan_16;
+ swdd->WriteDepthSpan = i830WriteDepthSpan_16;
+ swdd->ReadDepthPixels = i830ReadDepthPixels_16;
+ swdd->WriteDepthPixels = i830WriteDepthPixels_16;
+ break;
+
+ case DV_PF_8888:
+ swdd->WriteRGBASpan = i830WriteRGBASpan_8888;
+ swdd->WriteRGBSpan = i830WriteRGBSpan_8888;
+ swdd->WriteMonoRGBASpan = i830WriteMonoRGBASpan_8888;
+ swdd->WriteRGBAPixels = i830WriteRGBAPixels_8888;
+ swdd->WriteMonoRGBAPixels = i830WriteMonoRGBAPixels_8888;
+ swdd->ReadRGBASpan = i830ReadRGBASpan_8888;
+ swdd->ReadRGBAPixels = i830ReadRGBAPixels_8888;
+
+ if(imesa->hw_stencil) {
+ swdd->ReadDepthSpan = i830ReadDepthSpan_24_8;
+ swdd->WriteDepthSpan = i830WriteDepthSpan_24_8;
+ swdd->ReadDepthPixels = i830ReadDepthPixels_24_8;
+ swdd->WriteDepthPixels = i830WriteDepthPixels_24_8;
+
+ swdd->WriteStencilSpan = i830WriteStencilSpan_24_8;
+ swdd->ReadStencilSpan = i830ReadStencilSpan_24_8;
+ swdd->WriteStencilPixels = i830WriteStencilPixels_24_8;
+ swdd->ReadStencilPixels = i830ReadStencilPixels_24_8;
+ } else {
+ swdd->ReadDepthSpan = i830ReadDepthSpan_24;
+ swdd->WriteDepthSpan = i830WriteDepthSpan_24;
+ swdd->ReadDepthPixels = i830ReadDepthPixels_24;
+ swdd->WriteDepthPixels = i830WriteDepthPixels_24;
+ }
+ break;
+ }
+
+ swdd->SpanRenderStart = i830SpanRenderStart;
+ swdd->SpanRenderFinish = i830SpanRenderFinish;
+}
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