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Diffstat (limited to 'src/mesa/drivers/dri/mach64/mach64_span.c')
-rw-r--r--src/mesa/drivers/dri/mach64/mach64_span.c274
1 files changed, 274 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/mach64/mach64_span.c b/src/mesa/drivers/dri/mach64/mach64_span.c
new file mode 100644
index 0000000000..4c668ba90e
--- /dev/null
+++ b/src/mesa/drivers/dri/mach64/mach64_span.c
@@ -0,0 +1,274 @@
+/* $XFree86$ */ /* -*- mode: c; c-basic-offset: 3 -*- */
+/*
+ * Copyright 2000 Gareth Hughes
+ * 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
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * GARETH HUGHES 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.
+ */
+
+/*
+ * Authors:
+ * Gareth Hughes <gareth@valinux.com>
+ * Leif Delgass <ldelgass@retinalburn.net>
+ * José Fonseca <j_r_fonseca@yahoo.co.uk>
+ */
+
+#include "mach64_context.h"
+#include "mach64_ioctl.h"
+#include "mach64_state.h"
+#include "mach64_span.h"
+#include "mach64_tex.h"
+
+#include "swrast/swrast.h"
+
+#define DBG 0
+
+#define LOCAL_VARS \
+ mach64ContextPtr mmesa = MACH64_CONTEXT(ctx); \
+ mach64ScreenRec *mach64Screen = mmesa->mach64Screen; \
+ __DRIscreenPrivate *driScreen = mmesa->driScreen; \
+ __DRIdrawablePrivate *dPriv = mmesa->driDrawable; \
+ GLuint pitch = mmesa->drawPitch * mach64Screen->cpp; \
+ GLuint height = dPriv->h; \
+ char *buf = (char *)(driScreen->pFB + \
+ mmesa->drawOffset + \
+ (dPriv->x * mach64Screen->cpp) + \
+ (dPriv->y * pitch)); \
+ char *read_buf = (char *)(driScreen->pFB + \
+ mmesa->readOffset + \
+ (dPriv->x * mach64Screen->cpp) + \
+ (dPriv->y * pitch)); \
+ GLushort p; \
+ (void) read_buf; (void) buf; (void) p
+
+#define LOCAL_DEPTH_VARS \
+ mach64ScreenRec *mach64Screen = mmesa->mach64Screen; \
+ __DRIdrawablePrivate *dPriv = mmesa->driDrawable; \
+ __DRIscreenPrivate *driScreen = mmesa->driScreen; \
+ GLuint pitch = mach64Screen->depthPitch * 2; \
+ GLuint height = dPriv->h; \
+ char *buf = (char *)(driScreen->pFB + \
+ mach64Screen->depthOffset + \
+ dPriv->x * 2 + \
+ dPriv->y * pitch)
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
+
+#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() \
+ mach64ContextPtr mmesa = MACH64_CONTEXT(ctx); \
+ LOCK_HARDWARE( mmesa ); \
+ FINISH_DMA_LOCKED( mmesa ); \
+
+#define HW_CLIPLOOP() \
+ do { \
+ int _nc = mmesa->numClipRects; \
+ \
+ while ( _nc-- ) { \
+ int minx = mmesa->pClipRects[_nc].x1 - mmesa->drawX; \
+ int miny = mmesa->pClipRects[_nc].y1 - mmesa->drawY; \
+ int maxx = mmesa->pClipRects[_nc].x2 - mmesa->drawX; \
+ int maxy = mmesa->pClipRects[_nc].y2 - mmesa->drawY;
+
+#define HW_ENDCLIPLOOP() \
+ } \
+ } while (0)
+
+#define HW_UNLOCK() \
+ UNLOCK_HARDWARE( mmesa ) \
+
+
+
+/* ================================================================
+ * Color buffer
+ */
+
+/* 16 bit, RGB565 color spanline and pixel functions
+ */
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p, color) \
+ p = MACH64PACKCOLOR565( color[0], color[1], color[2] )
+
+#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 >> 8) & 0xf8) * 255 / 0xf8; \
+ rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc; \
+ rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8; \
+ rgba[3] = 0xff; \
+ } while (0)
+
+#define TAG(x) mach64##x##_RGB565
+#include "spantmp.h"
+
+
+
+/* 32 bit, ARGB8888 color spanline and pixel functions
+ */
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p, color) \
+ p = MACH64PACKCOLOR8888( color[0], color[1], color[2], color[3] )
+
+#define WRITE_RGBA( _x, _y, r, g, b, a ) \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = ((b << 0) | \
+ (g << 8) | \
+ (r << 16) | \
+ (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] = 0xff; /*(p >> 24) & 0xff;*/ \
+} while (0)
+
+#define TAG(x) mach64##x##_ARGB8888
+#include "spantmp.h"
+
+
+
+/* ================================================================
+ * Depth buffer
+ */
+
+/* 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) mach64##x##_16
+#include "depthtmp.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 mach64DDSetBuffer( GLcontext *ctx,
+ GLframebuffer *colorBuffer,
+ GLuint bufferBit )
+{
+ mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
+
+ switch ( bufferBit ) {
+ case FRONT_LEFT_BIT:
+ if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
+ fprintf(stderr,"%s: FRONT_LEFT_BIT\n", __FUNCTION__);
+ mmesa->drawOffset = mmesa->readOffset = mmesa->mach64Screen->frontOffset;
+ mmesa->drawPitch = mmesa->readPitch = mmesa->mach64Screen->frontPitch;
+ break;
+ case BACK_LEFT_BIT:
+ if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
+ fprintf(stderr,"%s: BACK_LEFT_BIT\n", __FUNCTION__);
+ mmesa->drawOffset = mmesa->readOffset = mmesa->mach64Screen->backOffset;
+ mmesa->drawPitch = mmesa->readPitch = mmesa->mach64Screen->backPitch;
+ break;
+ default:
+ break;
+ }
+}
+
+
+void mach64DDInitSpanFuncs( GLcontext *ctx )
+{
+ mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
+ struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+
+ swdd->SetBuffer = mach64DDSetBuffer;
+
+
+ switch ( mmesa->mach64Screen->cpp ) {
+ case 2:
+ swdd->WriteRGBASpan = mach64WriteRGBASpan_RGB565;
+ swdd->WriteRGBSpan = mach64WriteRGBSpan_RGB565;
+ swdd->WriteMonoRGBASpan = mach64WriteMonoRGBASpan_RGB565;
+ swdd->WriteRGBAPixels = mach64WriteRGBAPixels_RGB565;
+ swdd->WriteMonoRGBAPixels = mach64WriteMonoRGBAPixels_RGB565;
+ swdd->ReadRGBASpan = mach64ReadRGBASpan_RGB565;
+ swdd->ReadRGBAPixels = mach64ReadRGBAPixels_RGB565;
+ break;
+
+ case 4:
+ swdd->WriteRGBASpan = mach64WriteRGBASpan_ARGB8888;
+ swdd->WriteRGBSpan = mach64WriteRGBSpan_ARGB8888;
+ swdd->WriteMonoRGBASpan = mach64WriteMonoRGBASpan_ARGB8888;
+ swdd->WriteRGBAPixels = mach64WriteRGBAPixels_ARGB8888;
+ swdd->WriteMonoRGBAPixels = mach64WriteMonoRGBAPixels_ARGB8888;
+ swdd->ReadRGBASpan = mach64ReadRGBASpan_ARGB8888;
+ swdd->ReadRGBAPixels = mach64ReadRGBAPixels_ARGB8888;
+
+ break;
+
+ default:
+ break;
+ }
+
+ /* Depth buffer is always 16 bit */
+ swdd->ReadDepthSpan = mach64ReadDepthSpan_16;
+ swdd->WriteDepthSpan = mach64WriteDepthSpan_16;
+ swdd->ReadDepthPixels = mach64ReadDepthPixels_16;
+ swdd->WriteDepthPixels = mach64WriteDepthPixels_16;
+
+ /* No hardware stencil buffer */
+ swdd->ReadStencilSpan = NULL;
+ swdd->WriteStencilSpan = NULL;
+ swdd->ReadStencilPixels = NULL;
+ swdd->WriteStencilPixels = NULL;
+
+ swdd->WriteCI8Span = NULL;
+ swdd->WriteCI32Span = NULL;
+ swdd->WriteMonoCISpan = NULL;
+ swdd->WriteCI32Pixels = NULL;
+ swdd->WriteMonoCIPixels = NULL;
+ swdd->ReadCI32Span = NULL;
+ swdd->ReadCI32Pixels = NULL;
+}
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