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/*
* Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2003 S3 Graphics, 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
* 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
* VIA, S3 GRAPHICS, 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.
*/
#include "main/glheader.h"
#include "main/macros.h"
#include "main/mtypes.h"
#include "main/colormac.h"
#include "via_context.h"
#include "via_span.h"
#include "via_ioctl.h"
#include "swrast/swrast.h"
#define DBG 0
#define Y_FLIP(_y) (height - _y - 1)
#define HW_LOCK()
#define HW_UNLOCK()
#undef LOCAL_VARS
#define LOCAL_VARS \
struct via_renderbuffer *vrb = (struct via_renderbuffer *) rb; \
__DRIdrawablePrivate *dPriv = vrb->dPriv; \
GLuint pitch = vrb->pitch; \
GLuint height = dPriv->h; \
GLint p = 0; \
char *buf = (char *)(vrb->origMap); \
(void) p;
/* ================================================================
* Color buffer
*/
/* 16 bit, RGB565 color spanline and pixel functions
*/
#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)
#define SPANTMP_PIXEL_FMT GL_RGB
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
#define TAG(x) via##x##_565
#define TAG2(x,y) via##x##_565##y
#include "spantmp2.h"
/* 32 bit, ARGB8888 color spanline and pixel functions
*/
#define GET_PTR(_x, _y) (buf + (_x) * 4 + (_y) * pitch)
#define SPANTMP_PIXEL_FMT GL_BGRA
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
#define TAG(x) via##x##_8888
#define TAG2(x,y) via##x##_8888##y
#include "spantmp2.h"
/* 16 bit depthbuffer functions.
*/
#define LOCAL_DEPTH_VARS \
struct via_renderbuffer *vrb = (struct via_renderbuffer *) rb; \
__DRIdrawablePrivate *dPriv = vrb->dPriv; \
GLuint depth_pitch = vrb->pitch; \
GLuint height = dPriv->h; \
char *buf = (char *)(vrb->map)
#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
#define VALUE_TYPE GLushort
#define WRITE_DEPTH(_x, _y, d) \
*(GLushort *)(buf + (_x) * 2 + (_y) * depth_pitch) = d;
#define READ_DEPTH(d, _x, _y) \
d = *(volatile GLushort *)(buf + (_x) * 2 + (_y) * depth_pitch);
#define TAG(x) via##x##_z16
#include "depthtmp.h"
/* 32 bit depthbuffer functions.
*/
#define VALUE_TYPE GLuint
#define WRITE_DEPTH(_x, _y, d) \
*(GLuint *)(buf + (_x) * 4 + (_y) * depth_pitch) = d;
#define READ_DEPTH(d, _x, _y) \
d = *(volatile GLuint *)(buf + (_x) * 4 + (_y) * depth_pitch);
#define TAG(x) via##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)*depth_pitch); \
tmp &= 0x000000ff; \
tmp |= ((d)<<8); \
*(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) = tmp; \
}
#define READ_DEPTH( d, _x, _y ) \
d = (*(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch)) >> 8;
#define TAG(x) via##x##_z24_s8
#include "depthtmp.h"
#define WRITE_STENCIL( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch); \
tmp &= 0xffffff00; \
tmp |= (d); \
*(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) = tmp; \
}
#define READ_STENCIL( d, _x, _y ) \
d = *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) & 0xff;
#define TAG(x) via##x##_z24_s8
#include "stenciltmp.h"
/* Move locking out to get reasonable span performance.
*/
void viaSpanRenderStart( GLcontext *ctx )
{
struct via_context *vmesa = VIA_CONTEXT(ctx);
viaWaitIdle(vmesa, GL_FALSE);
LOCK_HARDWARE(vmesa);
}
void viaSpanRenderFinish( GLcontext *ctx )
{
struct via_context *vmesa = VIA_CONTEXT(ctx);
_swrast_flush( ctx );
UNLOCK_HARDWARE( vmesa );
}
void viaInitSpanFuncs(GLcontext *ctx)
{
struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
swdd->SpanRenderStart = viaSpanRenderStart;
swdd->SpanRenderFinish = viaSpanRenderFinish;
}
/**
* Plug in the Get/Put routines for the given driRenderbuffer.
*/
void
viaSetSpanFunctions(struct via_renderbuffer *vrb, const GLvisual *vis)
{
if (vrb->Base.InternalFormat == GL_RGBA) {
if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
viaInitPointers_565(&vrb->Base);
}
else {
viaInitPointers_8888(&vrb->Base);
}
}
else if (vrb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
viaInitDepthPointers_z16(&vrb->Base);
}
else if (vrb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
viaInitDepthPointers_z24_s8(&vrb->Base);
}
else if (vrb->Base.InternalFormat == GL_DEPTH_COMPONENT32) {
viaInitDepthPointers_z32(&vrb->Base);
}
else if (vrb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
viaInitStencilPointers_z24_s8(&vrb->Base);
}
}
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