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/*
* Copyright 2000-2001 VA Linux Systems, Inc.
* 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
* VA LINUX SYSTEMS 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:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "main/mtypes.h"
#include "mgadd.h"
#include "mgacontext.h"
#include "mgaspan.h"
#include "mgaioctl.h"
#include "swrast/swrast.h"
#define DBG 0
#define LOCAL_VARS \
mgaContextPtr mmesa = MGA_CONTEXT(ctx); \
__DRIscreenPrivate *sPriv = mmesa->driScreen; \
driRenderbuffer *drb = (driRenderbuffer *) rb; \
const __DRIdrawablePrivate *dPriv = drb->dPriv; \
GLuint pitch = drb->pitch; \
GLuint height = dPriv->h; \
char *buf = (char *)(sPriv->pFB + \
drb->offset + \
dPriv->x * drb->cpp + \
dPriv->y * pitch); \
GLuint p; \
(void) buf; (void) p
#define LOCAL_DEPTH_VARS \
mgaContextPtr mmesa = MGA_CONTEXT(ctx); \
__DRIscreenPrivate *sPriv = mmesa->driScreen; \
driRenderbuffer *drb = (driRenderbuffer *) rb; \
const __DRIdrawablePrivate *dPriv = drb->dPriv; \
GLuint pitch = drb->pitch; \
GLuint height = dPriv->h; \
char *buf = (char *)(sPriv->pFB + \
drb->offset + \
dPriv->x * drb->cpp + \
dPriv->y * pitch)
#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
#define HW_LOCK()
/* FIXME could/should we use dPriv->numClipRects like the other drivers? */
#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()
#define Y_FLIP(_y) (height - _y - 1)
/* 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) mga##x##_565
#define TAG2(x,y) mga##x##_565##y
#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) mga##x##_8888
#define TAG2(x,y) mga##x##_8888##y
#include "spantmp2.h"
/* 16 bit depthbuffer functions.
*/
#define VALUE_TYPE GLushort
#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) mga##x##_z16
#include "depthtmp.h"
/* 32 bit depthbuffer functions.
*/
#define VALUE_TYPE GLuint
#define WRITE_DEPTH( _x, _y, d ) \
*(GLuint *)(buf + (_x)*4 + (_y)*pitch) = d;
#define READ_DEPTH( d, _x, _y ) \
d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch);
#define TAG(x) mga##x##_z32
#include "depthtmp.h"
/* 24/8 bit interleaved depth/stencil functions
*/
#define VALUE_TYPE GLuint
#define WRITE_DEPTH( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \
tmp &= 0xff; \
tmp |= (d) << 8; \
*(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp; \
}
#define READ_DEPTH( d, _x, _y ) { \
d = (*(GLuint *)(buf + (_x)*4 + (_y)*pitch) & ~0xff) >> 8; \
}
#define TAG(x) mga##x##_z24_s8
#include "depthtmp.h"
#define WRITE_STENCIL( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \
tmp &= 0xffffff00; \
tmp |= d & 0xff; \
*(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \
}
#define READ_STENCIL( d, _x, _y ) \
d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff;
#define TAG(x) mga##x##_z24_s8
#include "stenciltmp.h"
static void
mgaSpanRenderStart( GLcontext *ctx )
{
mgaContextPtr mmesa = MGA_CONTEXT(ctx);
FLUSH_BATCH( mmesa );
LOCK_HARDWARE_QUIESCENT( mmesa );
}
static void
mgaSpanRenderFinish( GLcontext *ctx )
{
mgaContextPtr mmesa = MGA_CONTEXT(ctx);
_swrast_flush( ctx );
UNLOCK_HARDWARE( mmesa );
}
/**
* Initialize the driver callbacks for the read / write span functions.
*
* \bug
* To really support RGB888 and RGBA8888 visuals, we need separate read and
* write routines for 888 and 8888. We also need to determine whether or not
* the visual has destination alpha.
*/
void mgaDDInitSpanFuncs( GLcontext *ctx )
{
struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
swdd->SpanRenderStart = mgaSpanRenderStart;
swdd->SpanRenderFinish = mgaSpanRenderFinish;
}
/**
* Plug in the Get/Put routines for the given driRenderbuffer.
*/
void
mgaSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis)
{
if (drb->Base.InternalFormat == GL_RGBA) {
if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
mgaInitPointers_565(&drb->Base);
}
else {
mgaInitPointers_8888(&drb->Base);
}
}
else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
mgaInitDepthPointers_z16(&drb->Base);
}
else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
mgaInitDepthPointers_z24_s8(&drb->Base);
}
else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT32) {
mgaInitDepthPointers_z32(&drb->Base);
}
else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
mgaInitStencilPointers_z24_s8(&drb->Base);
}
}
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