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Diffstat (limited to 'src/mesa/drivers/dri/radeon/radeon_span.c')
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_span.c415
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diff --git a/src/mesa/drivers/dri/radeon/radeon_span.c b/src/mesa/drivers/dri/radeon/radeon_span.c
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+++ b/src/mesa/drivers/dri/radeon/radeon_span.c
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+/* $XFree86: xc/lib/GL/mesa/src/drv/radeon/radeon_span.c,v 1.6 2002/10/30 12:51:56 alanh Exp $ */
+/**************************************************************************
+
+Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
+ 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 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 THE COPYRIGHT OWNER(S) AND/OR ITS 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.
+
+**************************************************************************/
+
+/*
+ * Authors:
+ * Kevin E. Martin <martin@valinux.com>
+ * Gareth Hughes <gareth@valinux.com>
+ * Keith Whitwell <keith@tungstengraphics.com>
+ *
+ */
+
+#include "glheader.h"
+#include "swrast/swrast.h"
+
+#include "radeon_context.h"
+#include "radeon_ioctl.h"
+#include "radeon_state.h"
+#include "radeon_span.h"
+#include "radeon_tex.h"
+
+#define DBG 0
+
+#define LOCAL_VARS \
+ radeonContextPtr rmesa = RADEON_CONTEXT(ctx); \
+ radeonScreenPtr radeonScreen = rmesa->radeonScreen; \
+ __DRIscreenPrivate *sPriv = rmesa->dri.screen; \
+ __DRIdrawablePrivate *dPriv = rmesa->dri.drawable; \
+ GLuint pitch = radeonScreen->frontPitch * radeonScreen->cpp; \
+ GLuint height = dPriv->h; \
+ char *buf = (char *)(sPriv->pFB + \
+ rmesa->state.color.drawOffset + \
+ (dPriv->x * radeonScreen->cpp) + \
+ (dPriv->y * pitch)); \
+ char *read_buf = (char *)(sPriv->pFB + \
+ rmesa->state.pixel.readOffset + \
+ (dPriv->x * radeonScreen->cpp) + \
+ (dPriv->y * pitch)); \
+ GLuint p; \
+ (void) read_buf; (void) buf; (void) p
+
+#define LOCAL_DEPTH_VARS \
+ radeonContextPtr rmesa = RADEON_CONTEXT(ctx); \
+ radeonScreenPtr radeonScreen = rmesa->radeonScreen; \
+ __DRIscreenPrivate *sPriv = rmesa->dri.screen; \
+ __DRIdrawablePrivate *dPriv = rmesa->dri.drawable; \
+ GLuint height = dPriv->h; \
+ GLuint xo = dPriv->x; \
+ GLuint yo = dPriv->y; \
+ char *buf = (char *)(sPriv->pFB + radeonScreen->depthOffset); \
+ (void) buf
+
+#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()
+
+#define HW_CLIPLOOP() \
+ do { \
+ __DRIdrawablePrivate *dPriv = rmesa->dri.drawable; \
+ 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()
+
+
+
+/* ================================================================
+ * Color buffer
+ */
+
+/* 16 bit, RGB565 color spanline and pixel functions
+ */
+#define INIT_MONO_PIXEL(p, color) \
+ p = PACK_COLOR_565( 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) radeon##x##_RGB565
+#include "spantmp.h"
+
+/* 32 bit, ARGB8888 color spanline and pixel functions
+ */
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p, color) \
+ p = PACK_COLOR_8888( color[3], color[0], color[1], color[2] )
+
+#define WRITE_RGBA( _x, _y, r, g, b, a ) \
+do { \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = ((b << 0) | \
+ (g << 8) | \
+ (r << 16) | \
+ (a << 24) ); \
+} while (0)
+
+#define WRITE_PIXEL( _x, _y, p ) \
+do { \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = p; \
+} while (0)
+
+#define READ_RGBA( rgba, _x, _y ) \
+do { \
+ volatile GLuint *ptr = (volatile GLuint *)(read_buf + _x*4 + _y*pitch); \
+ GLuint p = *ptr; \
+ 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) radeon##x##_ARGB8888
+#include "spantmp.h"
+
+
+
+/* ================================================================
+ * Depth buffer
+ */
+
+/* The Radeon family has depth tiling on all the time, so we have to convert
+ * the x,y coordinates into the memory bus address (mba) in the same
+ * manner as the engine. In each case, the linear block address (ba)
+ * is calculated, and then wired with x and y to produce the final
+ * memory address.
+ */
+
+static GLuint radeon_mba_z32( radeonContextPtr rmesa,
+ GLint x, GLint y )
+{
+ GLuint pitch = rmesa->radeonScreen->frontPitch;
+ GLuint ba, address = 0; /* a[0..1] = 0 */
+
+ ba = (y / 16) * (pitch / 16) + (x / 16);
+
+ address |= (x & 0x7) << 2; /* a[2..4] = x[0..2] */
+ address |= (y & 0x3) << 5; /* a[5..6] = y[0..1] */
+ address |=
+ (((x & 0x10) >> 2) ^ (y & 0x4)) << 5; /* a[7] = x[4] ^ y[2] */
+ address |= (ba & 0x3) << 8; /* a[8..9] = ba[0..1] */
+
+ address |= (y & 0x8) << 7; /* a[10] = y[3] */
+ address |=
+ (((x & 0x8) << 1) ^ (y & 0x10)) << 7; /* a[11] = x[3] ^ y[4] */
+ address |= (ba & ~0x3) << 10; /* a[12..] = ba[2..] */
+
+ return address;
+}
+
+static __inline GLuint radeon_mba_z16( radeonContextPtr rmesa, GLint x, GLint y )
+{
+ GLuint pitch = rmesa->radeonScreen->frontPitch;
+ GLuint ba, address = 0; /* a[0] = 0 */
+
+ ba = (y / 16) * (pitch / 32) + (x / 32);
+
+ address |= (x & 0x7) << 1; /* a[1..3] = x[0..2] */
+ address |= (y & 0x7) << 4; /* a[4..6] = y[0..2] */
+ address |= (x & 0x8) << 4; /* a[7] = x[3] */
+ address |= (ba & 0x3) << 8; /* a[8..9] = ba[0..1] */
+ address |= (y & 0x8) << 7; /* a[10] = y[3] */
+ address |= ((x & 0x10) ^ (y & 0x10)) << 7; /* a[11] = x[4] ^ y[4] */
+ address |= (ba & ~0x3) << 10; /* a[12..] = ba[2..] */
+
+ return address;
+}
+
+
+/* 16-bit depth buffer functions
+ */
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLushort *)(buf + radeon_mba_z16( rmesa, _x + xo, _y + yo )) = d;
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLushort *)(buf + radeon_mba_z16( rmesa, _x + xo, _y + yo ));
+
+#define TAG(x) radeon##x##_16
+#include "depthtmp.h"
+
+/* 24 bit depth, 8 bit stencil depthbuffer functions
+ */
+#define WRITE_DEPTH( _x, _y, d ) \
+do { \
+ GLuint offset = radeon_mba_z32( rmesa, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ tmp &= 0xff000000; \
+ tmp |= ((d) & 0x00ffffff); \
+ *(GLuint *)(buf + offset) = tmp; \
+} while (0)
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLuint *)(buf + radeon_mba_z32( rmesa, _x + xo, \
+ _y + yo )) & 0x00ffffff;
+
+#define TAG(x) radeon##x##_24_8
+#include "depthtmp.h"
+
+
+/* ================================================================
+ * Stencil buffer
+ */
+
+/* 24 bit depth, 8 bit stencil depthbuffer functions
+ */
+#define WRITE_STENCIL( _x, _y, d ) \
+do { \
+ GLuint offset = radeon_mba_z32( rmesa, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ tmp &= 0x00ffffff; \
+ tmp |= (((d) & 0xff) << 24); \
+ *(GLuint *)(buf + offset) = tmp; \
+} while (0)
+
+#define READ_STENCIL( d, _x, _y ) \
+do { \
+ GLuint offset = radeon_mba_z32( rmesa, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ tmp &= 0xff000000; \
+ d = tmp >> 24; \
+} while (0)
+
+#define TAG(x) radeon##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 radeonSetBuffer( GLcontext *ctx,
+ GLframebuffer *colorBuffer,
+ GLuint bufferBit )
+{
+ radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+
+ switch ( bufferBit ) {
+ case FRONT_LEFT_BIT:
+ if ( rmesa->sarea->pfCurrentPage == 1 ) {
+ rmesa->state.pixel.readOffset = rmesa->radeonScreen->backOffset;
+ rmesa->state.pixel.readPitch = rmesa->radeonScreen->backPitch;
+ rmesa->state.color.drawOffset = rmesa->radeonScreen->backOffset;
+ rmesa->state.color.drawPitch = rmesa->radeonScreen->backPitch;
+ } else {
+ rmesa->state.pixel.readOffset = rmesa->radeonScreen->frontOffset;
+ rmesa->state.pixel.readPitch = rmesa->radeonScreen->frontPitch;
+ rmesa->state.color.drawOffset = rmesa->radeonScreen->frontOffset;
+ rmesa->state.color.drawPitch = rmesa->radeonScreen->frontPitch;
+ }
+ break;
+ case BACK_LEFT_BIT:
+ if ( rmesa->sarea->pfCurrentPage == 1 ) {
+ rmesa->state.pixel.readOffset = rmesa->radeonScreen->frontOffset;
+ rmesa->state.pixel.readPitch = rmesa->radeonScreen->frontPitch;
+ rmesa->state.color.drawOffset = rmesa->radeonScreen->frontOffset;
+ rmesa->state.color.drawPitch = rmesa->radeonScreen->frontPitch;
+ } else {
+ rmesa->state.pixel.readOffset = rmesa->radeonScreen->backOffset;
+ rmesa->state.pixel.readPitch = rmesa->radeonScreen->backPitch;
+ rmesa->state.color.drawOffset = rmesa->radeonScreen->backOffset;
+ rmesa->state.color.drawPitch = rmesa->radeonScreen->backPitch;
+ }
+ break;
+ default:
+ assert(0);
+ break;
+ }
+}
+
+/* Move locking out to get reasonable span performance (10x better
+ * than doing this in HW_LOCK above). WaitForIdle() is the main
+ * culprit.
+ */
+
+static void radeonSpanRenderStart( GLcontext *ctx )
+{
+ radeonContextPtr rmesa = RADEON_CONTEXT( ctx );
+
+ RADEON_FIREVERTICES( rmesa );
+ LOCK_HARDWARE( rmesa );
+ radeonWaitForIdleLocked( rmesa );
+}
+
+static void radeonSpanRenderFinish( GLcontext *ctx )
+{
+ radeonContextPtr rmesa = RADEON_CONTEXT( ctx );
+ _swrast_flush( ctx );
+ UNLOCK_HARDWARE( rmesa );
+}
+
+void radeonInitSpanFuncs( GLcontext *ctx )
+{
+ radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+ struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+
+ swdd->SetBuffer = radeonSetBuffer;
+
+ switch ( rmesa->radeonScreen->cpp ) {
+ case 2:
+ swdd->WriteRGBASpan = radeonWriteRGBASpan_RGB565;
+ swdd->WriteRGBSpan = radeonWriteRGBSpan_RGB565;
+ swdd->WriteMonoRGBASpan = radeonWriteMonoRGBASpan_RGB565;
+ swdd->WriteRGBAPixels = radeonWriteRGBAPixels_RGB565;
+ swdd->WriteMonoRGBAPixels = radeonWriteMonoRGBAPixels_RGB565;
+ swdd->ReadRGBASpan = radeonReadRGBASpan_RGB565;
+ swdd->ReadRGBAPixels = radeonReadRGBAPixels_RGB565;
+ break;
+
+ case 4:
+ swdd->WriteRGBASpan = radeonWriteRGBASpan_ARGB8888;
+ swdd->WriteRGBSpan = radeonWriteRGBSpan_ARGB8888;
+ swdd->WriteMonoRGBASpan = radeonWriteMonoRGBASpan_ARGB8888;
+ swdd->WriteRGBAPixels = radeonWriteRGBAPixels_ARGB8888;
+ swdd->WriteMonoRGBAPixels = radeonWriteMonoRGBAPixels_ARGB8888;
+ swdd->ReadRGBASpan = radeonReadRGBASpan_ARGB8888;
+ swdd->ReadRGBAPixels = radeonReadRGBAPixels_ARGB8888;
+ break;
+
+ default:
+ break;
+ }
+
+ switch ( rmesa->glCtx->Visual.depthBits ) {
+ case 16:
+ swdd->ReadDepthSpan = radeonReadDepthSpan_16;
+ swdd->WriteDepthSpan = radeonWriteDepthSpan_16;
+ swdd->ReadDepthPixels = radeonReadDepthPixels_16;
+ swdd->WriteDepthPixels = radeonWriteDepthPixels_16;
+ break;
+
+ case 24:
+ swdd->ReadDepthSpan = radeonReadDepthSpan_24_8;
+ swdd->WriteDepthSpan = radeonWriteDepthSpan_24_8;
+ swdd->ReadDepthPixels = radeonReadDepthPixels_24_8;
+ swdd->WriteDepthPixels = radeonWriteDepthPixels_24_8;
+
+ swdd->ReadStencilSpan = radeonReadStencilSpan_24_8;
+ swdd->WriteStencilSpan = radeonWriteStencilSpan_24_8;
+ swdd->ReadStencilPixels = radeonReadStencilPixels_24_8;
+ swdd->WriteStencilPixels = radeonWriteStencilPixels_24_8;
+ break;
+
+ default:
+ break;
+ }
+
+ swdd->SpanRenderStart = radeonSpanRenderStart;
+ swdd->SpanRenderFinish = radeonSpanRenderFinish;
+}
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