--- /dev/null
+/**************************************************************************
+
+Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
+Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
+ VA Linux Systems Inc., Fremont, California.
+
+The Weather Channel (TM) funded Tungsten Graphics to develop the
+initial release of the Radeon 8500 driver under the XFree86 license.
+This notice must be preserved.
+
+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 "r300_state.h"
+#include "radeon_ioctl.h"
+#include "r300_ioctl.h"
+#include "radeon_span.h"
+
+#include "drirenderbuffer.h"
+
+#define DBG 0
+
+/*
+ * Note that all information needed to access pixels in a renderbuffer
+ * should be obtained through the gl_renderbuffer parameter, not per-context
+ * information.
+ */
+#define LOCAL_VARS \
+ driRenderbuffer *drb = (driRenderbuffer *) rb; \
+ const __DRIdrawablePrivate *dPriv = drb->dPriv; \
+ const GLuint bottom = dPriv->h - 1; \
+ GLubyte *buf = (GLubyte *) drb->flippedData \
+ + (dPriv->y * drb->flippedPitch + dPriv->x) * drb->cpp; \
+ GLuint p; \
+ (void) p;
+
+#define LOCAL_DEPTH_VARS \
+ driRenderbuffer *drb = (driRenderbuffer *) rb; \
+ const __DRIdrawablePrivate *dPriv = drb->dPriv; \
+ const GLuint bottom = dPriv->h - 1; \
+ GLuint xo = dPriv->x; \
+ GLuint yo = dPriv->y; \
+ GLubyte *buf = (GLubyte *) drb->Base.Data;
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
+
+#define Y_FLIP(Y) (bottom - (Y))
+
+#define HW_LOCK()
+
+#define HW_UNLOCK()
+
+/* ================================================================
+ * Color buffer
+ */
+
+/* 16 bit, RGB565 color spanline and pixel functions
+ */
+#define SPANTMP_PIXEL_FMT GL_RGB
+#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
+
+#define TAG(x) radeon##x##_RGB565
+#define TAG2(x,y) radeon##x##_RGB565##y
+#define GET_PTR(X,Y) (buf + ((Y) * drb->flippedPitch + (X)) * 2)
+#include "spantmp2.h"
+
+/* 32 bit, ARGB8888 color spanline and pixel functions
+ */
+#define SPANTMP_PIXEL_FMT GL_BGRA
+#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
+
+#define TAG(x) radeon##x##_ARGB8888
+#define TAG2(x,y) radeon##x##_ARGB8888##y
+#define GET_PTR(X,Y) (buf + ((Y) * drb->flippedPitch + (X)) * 4)
+#include "spantmp2.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.
+ * The chip will do address translation on its own if the surface registers
+ * are set up correctly. It is not quite enough to get it working with hyperz
+ * too...
+ */
+
+static GLuint radeon_mba_z32(const driRenderbuffer * drb, GLint x, GLint y)
+{
+ GLuint pitch = drb->pitch;
+ if (drb->depthHasSurface) {
+ return 4 * (x + y * pitch);
+ } else {
+ GLuint ba, address = 0; /* a[0..1] = 0 */
+
+#ifdef COMPILE_R300
+ ba = (y / 8) * (pitch / 8) + (x / 8);
+#else
+ ba = (y / 16) * (pitch / 16) + (x / 16);
+#endif
+
+ 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(const driRenderbuffer * drb, GLint x, GLint y)
+{
+ GLuint pitch = drb->pitch;
+ if (drb->depthHasSurface) {
+ return 2 * (x + y * pitch);
+ } else {
+ 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( drb, _x + xo, _y + yo )) = d;
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLushort *)(buf + radeon_mba_z16( drb, _x + xo, _y + yo ));
+
+#define TAG(x) radeon##x##_z16
+#include "depthtmp.h"
+
+/* 24 bit depth, 8 bit stencil depthbuffer functions
+ *
+ * Careful: It looks like the R300 uses ZZZS byte order while the R200
+ * uses SZZZ for 24 bit depth, 8 bit stencil mode.
+ */
+#ifdef COMPILE_R300
+#define WRITE_DEPTH( _x, _y, d ) \
+do { \
+ GLuint offset = radeon_mba_z32( drb, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ tmp &= 0x000000ff; \
+ tmp |= ((d << 8) & 0xffffff00); \
+ *(GLuint *)(buf + offset) = tmp; \
+} while (0)
+#else
+#define WRITE_DEPTH( _x, _y, d ) \
+do { \
+ GLuint offset = radeon_mba_z32( drb, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ tmp &= 0xff000000; \
+ tmp |= ((d) & 0x00ffffff); \
+ *(GLuint *)(buf + offset) = tmp; \
+} while (0)
+#endif
+
+#ifdef COMPILE_R300
+#define READ_DEPTH( d, _x, _y ) \
+ do { \
+ d = (*(GLuint *)(buf + radeon_mba_z32( drb, _x + xo, \
+ _y + yo )) & 0xffffff00) >> 8; \
+ }while(0)
+#else
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLuint *)(buf + radeon_mba_z32( drb, _x + xo, \
+ _y + yo )) & 0x00ffffff;
+#endif
+
+#define TAG(x) radeon##x##_z24_s8
+#include "depthtmp.h"
+
+/* ================================================================
+ * Stencil buffer
+ */
+
+/* 24 bit depth, 8 bit stencil depthbuffer functions
+ */
+#ifdef COMPILE_R300
+#define WRITE_STENCIL( _x, _y, d ) \
+do { \
+ GLuint offset = radeon_mba_z32( drb, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ tmp &= 0xffffff00; \
+ tmp |= (d) & 0xff; \
+ *(GLuint *)(buf + offset) = tmp; \
+} while (0)
+#else
+#define WRITE_STENCIL( _x, _y, d ) \
+do { \
+ GLuint offset = radeon_mba_z32( drb, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ tmp &= 0x00ffffff; \
+ tmp |= (((d) & 0xff) << 24); \
+ *(GLuint *)(buf + offset) = tmp; \
+} while (0)
+#endif
+
+#ifdef COMPILE_R300
+#define READ_STENCIL( d, _x, _y ) \
+do { \
+ GLuint offset = radeon_mba_z32( drb, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ d = tmp & 0x000000ff; \
+} while (0)
+#else
+#define READ_STENCIL( d, _x, _y ) \
+do { \
+ GLuint offset = radeon_mba_z32( drb, _x + xo, _y + yo ); \
+ GLuint tmp = *(GLuint *)(buf + offset); \
+ d = (tmp & 0xff000000) >> 24; \
+} while (0)
+#endif
+
+#define TAG(x) radeon##x##_z24_s8
+#include "stenciltmp.h"
+
+/* 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);
+#ifdef COMPILE_R300
+ r300ContextPtr r300 = (r300ContextPtr) rmesa;
+ R300_FIREVERTICES(r300);
+#else
+ RADEON_FIREVERTICES(rmesa);
+#endif
+ 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)
+{
+ struct swrast_device_driver *swdd =
+ _swrast_GetDeviceDriverReference(ctx);
+ swdd->SpanRenderStart = radeonSpanRenderStart;
+ swdd->SpanRenderFinish = radeonSpanRenderFinish;
+}
+
+/**
+ * Plug in the Get/Put routines for the given driRenderbuffer.
+ */
+void radeonSetSpanFunctions(driRenderbuffer * drb, const GLvisual * vis)
+{
+ if (drb->Base.InternalFormat == GL_RGBA) {
+ if (vis->redBits == 5 && vis->greenBits == 6
+ && vis->blueBits == 5) {
+ radeonInitPointers_RGB565(&drb->Base);
+ } else {
+ radeonInitPointers_ARGB8888(&drb->Base);
+ }
+ } else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
+ radeonInitDepthPointers_z16(&drb->Base);
+ } else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
+ radeonInitDepthPointers_z24_s8(&drb->Base);
+ } else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
+ radeonInitStencilPointers_z24_s8(&drb->Base);
+ }
+}
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