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mesa/src/mesa/drivers/glide/fxdd.c
Ian Romanick c93105eb9e Added support for EXT_blend_equation_separate / ATI_blend_equation_separate. 
The internal driver interface was also changed to use
BlendEquationSeparate instead of BlendEquation.
2004-01-27 18:52:40 +00:00

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/*
* Mesa 3-D graphics library
* Version: 5.1
*
* Copyright (C) 1999-2003 Brian Paul 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 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
* BRIAN PAUL 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:
* David Bucciarelli
* Brian Paul
* Daryll Strauss
* Keith Whitwell
* Daniel Borca
* Hiroshi Morii
*/
/* fxdd.c - 3Dfx VooDoo Mesa device driver functions */
#ifdef HAVE_CONFIG_H
#include "conf.h"
#endif
#if defined(FX)
#include "image.h"
#include "mtypes.h"
#include "fxdrv.h"
#include "enums.h"
#include "extensions.h"
#include "macros.h"
#include "texstore.h"
#include "teximage.h"
#include "swrast/swrast.h"
#include "swrast/s_context.h"
#include "swrast_setup/swrast_setup.h"
#include "tnl/tnl.h"
#include "tnl/t_context.h"
#include "tnl/t_pipeline.h"
#include "array_cache/acache.h"
/* lookup table for scaling 4 bit colors up to 8 bits */
GLuint FX_rgb_scale_4[16] = {
0, 17, 34, 51, 68, 85, 102, 119,
136, 153, 170, 187, 204, 221, 238, 255
};
/* lookup table for scaling 5 bit colors up to 8 bits */
GLuint FX_rgb_scale_5[32] = {
0, 8, 16, 25, 33, 41, 49, 58,
66, 74, 82, 90, 99, 107, 115, 123,
132, 140, 148, 156, 165, 173, 181, 189,
197, 206, 214, 222, 230, 239, 247, 255
};
/* lookup table for scaling 6 bit colors up to 8 bits */
GLuint FX_rgb_scale_6[64] = {
0, 4, 8, 12, 16, 20, 24, 28,
32, 36, 40, 45, 49, 53, 57, 61,
65, 69, 73, 77, 81, 85, 89, 93,
97, 101, 105, 109, 113, 117, 121, 125,
130, 134, 138, 142, 146, 150, 154, 158,
162, 166, 170, 174, 178, 182, 186, 190,
194, 198, 202, 206, 210, 215, 219, 223,
227, 231, 235, 239, 243, 247, 251, 255
};
/*
* Disable color by masking out R, G, B, A
*/
static void fxDisableColor (fxMesaContext fxMesa)
{
if (fxMesa->colDepth != 16) {
/* 32bpp mode or 15bpp mode */
fxMesa->Glide.grColorMaskExt(FXFALSE, FXFALSE, FXFALSE, FXFALSE);
} else {
/* 16 bpp mode */
grColorMask(FXFALSE, FXFALSE);
}
}
/**********************************************************************/
/***** Miscellaneous functions *****/
/**********************************************************************/
/* Return buffer size information */
static void
fxDDBufferSize(GLframebuffer *buffer, GLuint *width, GLuint *height)
{
GET_CURRENT_CONTEXT(ctx);
if (ctx && FX_CONTEXT(ctx)) {
fxMesaContext fxMesa = FX_CONTEXT(ctx);
if (TDFX_DEBUG & VERBOSE_DRIVER) {
fprintf(stderr, "fxDDBufferSize(...)\n");
}
*width = fxMesa->width;
*height = fxMesa->height;
}
}
/* Implements glClearColor() */
static void
fxDDClearColor(GLcontext * ctx, const GLfloat color[4])
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GLubyte col[4];
if (TDFX_DEBUG & VERBOSE_DRIVER) {
fprintf(stderr, "fxDDClearColor(%f, %f, %f, %f)\n",
color[0], color[1], color[2], color[3]);
}
CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]);
CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]);
CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]);
CLAMPED_FLOAT_TO_UBYTE(col[3], color[3]);
fxMesa->clearC = FXCOLOR4(col);
fxMesa->clearA = col[3];
}
/* Clear the color and/or depth buffers */
static void fxDDClear( GLcontext *ctx,
GLbitfield mask, GLboolean all,
GLint x, GLint y, GLint width, GLint height )
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GLbitfield softwareMask = mask & (DD_ACCUM_BIT);
const GLuint stencil_size = fxMesa->haveHwStencil ? ctx->Visual.stencilBits : 0;
const FxU32 clearD = (FxU32) (((1 << ctx->Visual.depthBits) - 1) * ctx->Depth.Clear);
const FxU8 clearS = (FxU8) (ctx->Stencil.Clear & 0xff);
/* [dBorca] Hack alert:
* if we set Mesa for 32bit depth, we'll get
* clearD == 0
* due to 32bit integer overflow!
*/
if ( TDFX_DEBUG & MESA_VERBOSE ) {
fprintf( stderr, "fxDDClear( %d, %d, %d, %d )\n",
(int) x, (int) y, (int) width, (int) height );
}
/* Need this check to respond to glScissor and clipping updates */
/* should also take care of FX_NEW_COLOR_MASK, FX_NEW_STENCIL, depth? */
if (fxMesa->new_state & FX_NEW_SCISSOR) {
fxSetupScissor(ctx);
fxMesa->new_state &= ~FX_NEW_SCISSOR;
}
/* we can't clear accum buffers */
mask &= ~(DD_ACCUM_BIT);
/*
* As per GL spec, stencil masking should be obeyed when clearing
*/
if (mask & DD_STENCIL_BIT) {
if (!fxMesa->haveHwStencil || fxMesa->unitsState.stencilWriteMask != 0xff) {
/* Napalm seems to have trouble with stencil write masks != 0xff */
/* do stencil clear in software */
softwareMask |= DD_STENCIL_BIT;
mask &= ~(DD_STENCIL_BIT);
}
}
/*
* As per GL spec, color masking should be obeyed when clearing
*/
if (ctx->Visual.greenBits != 8 && ctx->Visual.greenBits != 5) {
/* can only do color masking if running in 24/32bpp on Napalm */
if (ctx->Color.ColorMask[RCOMP] != ctx->Color.ColorMask[GCOMP] ||
ctx->Color.ColorMask[GCOMP] != ctx->Color.ColorMask[BCOMP]) {
softwareMask |= (mask & (DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT));
mask &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT);
}
}
if (fxMesa->haveHwStencil) {
/*
* If we want to clear stencil, it must be enabled
* in the HW, even if the stencil test is not enabled
* in the OGL state.
*/
BEGIN_BOARD_LOCK();
if (mask & DD_STENCIL_BIT) {
fxMesa->Glide.grStencilMaskExt(0xff /*fxMesa->unitsState.stencilWriteMask*/);
/* set stencil ref value = desired clear value */
fxMesa->Glide.grStencilFuncExt(GR_CMP_ALWAYS, clearS, 0xff);
fxMesa->Glide.grStencilOpExt(GR_STENCILOP_REPLACE,
GR_STENCILOP_REPLACE, GR_STENCILOP_REPLACE);
grEnable(GR_STENCIL_MODE_EXT);
}
else {
grDisable(GR_STENCIL_MODE_EXT);
}
END_BOARD_LOCK();
}
/*
* This may be ugly, but it's needed in order to work around a number
* of Glide bugs.
*/
BEGIN_CLIP_LOOP();
{
/*
* This could probably be done fancier but doing each possible case
* explicitly is less error prone.
*/
switch (mask & ~DD_STENCIL_BIT) {
case DD_BACK_LEFT_BIT | DD_DEPTH_BIT:
/* back buffer & depth */
/* FX_grColorMaskv_NoLock(ctx, true4); */ /* work around Voodoo3 bug */
grDepthMask(FXTRUE);
grRenderBuffer(GR_BUFFER_BACKBUFFER);
if (stencil_size > 0) {
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
}
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
if (!fxMesa->unitsState.depthTestEnabled) {
grDepthMask(FXFALSE);
}
break;
case DD_FRONT_LEFT_BIT | DD_DEPTH_BIT:
/* XXX it appears that the depth buffer isn't cleared when
* glRenderBuffer(GR_BUFFER_FRONTBUFFER) is set.
* This is a work-around/
*/
/* clear depth */
grDepthMask(FXTRUE);
grRenderBuffer(GR_BUFFER_BACKBUFFER);
fxDisableColor(fxMesa);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
/* clear front */
fxSetupColorMask(ctx);
grRenderBuffer(GR_BUFFER_FRONTBUFFER);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
if (!fxMesa->unitsState.depthTestEnabled) {
grDepthMask(FXFALSE);
}
break;
case DD_BACK_LEFT_BIT:
/* back buffer only */
grDepthMask(FXFALSE);
grRenderBuffer(GR_BUFFER_BACKBUFFER);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
if (fxMesa->unitsState.depthTestEnabled) {
grDepthMask(FXTRUE);
}
break;
case DD_FRONT_LEFT_BIT:
/* front buffer only */
grDepthMask(FXFALSE);
grRenderBuffer(GR_BUFFER_FRONTBUFFER);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
if (fxMesa->unitsState.depthTestEnabled) {
grDepthMask(FXTRUE);
}
break;
case DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT:
/* front and back */
grDepthMask(FXFALSE);
grRenderBuffer(GR_BUFFER_BACKBUFFER);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
grRenderBuffer(GR_BUFFER_FRONTBUFFER);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
if (fxMesa->unitsState.depthTestEnabled) {
grDepthMask(FXTRUE);
}
break;
case DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT | DD_DEPTH_BIT:
/* clear front */
grDepthMask(FXFALSE);
grRenderBuffer(GR_BUFFER_FRONTBUFFER);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
/* clear back and depth */
grDepthMask(FXTRUE);
grRenderBuffer(GR_BUFFER_BACKBUFFER);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
if (!fxMesa->unitsState.depthTestEnabled) {
grDepthMask(FXFALSE);
}
break;
case DD_DEPTH_BIT:
/* just the depth buffer */
grRenderBuffer(GR_BUFFER_BACKBUFFER);
fxDisableColor(fxMesa);
grDepthMask(FXTRUE);
if (stencil_size > 0)
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
else
grBufferClear(fxMesa->clearC,
fxMesa->clearA,
clearD);
fxSetupColorMask(ctx);
if (ctx->Color._DrawDestMask & FRONT_LEFT_BIT) {
grRenderBuffer(GR_BUFFER_FRONTBUFFER);
}
if (!fxMesa->unitsState.depthTestEnabled) {
grDepthMask(FXFALSE);
}
break;
default:
/* clear no color buffers or depth buffer but might clear stencil */
if (stencil_size > 0 && (mask & DD_STENCIL_BIT)) {
/* XXX need this RenderBuffer call to work around Glide bug */
grRenderBuffer(GR_BUFFER_BACKBUFFER);
grDepthMask(FXFALSE);
fxDisableColor(fxMesa);
fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
fxMesa->clearA,
clearD, clearS);
if (fxMesa->unitsState.depthTestEnabled) {
grDepthMask(FXTRUE);
}
fxSetupColorMask(ctx);
if (ctx->Color._DrawDestMask & FRONT_LEFT_BIT) {
grRenderBuffer(GR_BUFFER_FRONTBUFFER);
}
}
}
}
END_CLIP_LOOP();
if (fxMesa->haveHwStencil && (mask & DD_STENCIL_BIT)) {
/* We changed the stencil state above. Signal that we need to
* upload it again.
*/
fxMesa->new_state |= FX_NEW_STENCIL;
}
if (softwareMask)
_swrast_Clear( ctx, softwareMask, all, x, y, width, height );
}
/* Set the buffer used for drawing */
/* XXX support for separate read/draw buffers hasn't been tested */
static void
fxDDSetDrawBuffer(GLcontext * ctx, GLenum mode)
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
if (TDFX_DEBUG & VERBOSE_DRIVER) {
fprintf(stderr, "fxDDSetDrawBuffer(%x)\n", (int)mode);
}
if (mode == GL_FRONT_LEFT) {
fxMesa->currentFB = GR_BUFFER_FRONTBUFFER;
grRenderBuffer(fxMesa->currentFB);
}
else if (mode == GL_BACK_LEFT) {
fxMesa->currentFB = GR_BUFFER_BACKBUFFER;
grRenderBuffer(fxMesa->currentFB);
}
else if (mode == GL_NONE) {
fxDisableColor(fxMesa);
}
else {
/* we'll need a software fallback */
/* XXX not implemented */
}
/* update s/w fallback state */
_swrast_DrawBuffer(ctx, mode);
}
static void
fxDDDrawBitmap2 (GLcontext *ctx, GLint px, GLint py,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap)
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
SWcontext *swrast = SWRAST_CONTEXT(ctx);
GrLfbInfo_t info;
GrLfbWriteMode_t mode;
FxU16 color;
const struct gl_pixelstore_attrib *finalUnpack;
struct gl_pixelstore_attrib scissoredUnpack;
/* check if there's any raster operations enabled which we can't handle */
if ((swrast->_RasterMask & (ALPHATEST_BIT |
/*BLEND_BIT |*/ /* blending ok, through pixpipe */
DEPTH_BIT | /* could be done with RGB:DEPTH */
FOG_BIT | /* could be done with RGB:DEPTH */
LOGIC_OP_BIT |
/*CLIP_BIT |*/ /* clipping ok, below */
STENCIL_BIT |
/*MASKING_BIT |*/ /* masking ok, test follows */
ALPHABUF_BIT | /* nope! see 565 span kludge */
MULTI_DRAW_BIT |
OCCLUSION_BIT | /* nope! at least not yet */
TEXTURE_BIT |
FRAGPROG_BIT))
||
((swrast->_RasterMask & MASKING_BIT) /*&& (ctx->Visual.greenBits != 8)*/ && (ctx->Visual.greenBits != 5))
) {
_swrast_Bitmap(ctx, px, py, width, height, unpack, bitmap);
return;
}
/* make sure the pixelpipe is configured correctly */
fxSetupFXUnits(ctx);
if (ctx->Scissor.Enabled) {
/* This is a bit tricky, but by carefully adjusting the px, py,
* width, height, skipPixels and skipRows values we can do
* scissoring without special code in the rendering loop.
*/
/* we'll construct a new pixelstore struct */
finalUnpack = &scissoredUnpack;
scissoredUnpack = *unpack;
if (scissoredUnpack.RowLength == 0)
scissoredUnpack.RowLength = width;
/* clip left */
if (px < ctx->Scissor.X) {
scissoredUnpack.SkipPixels += (ctx->Scissor.X - px);
width -= (ctx->Scissor.X - px);
px = ctx->Scissor.X;
}
/* clip right */
if (px + width >= ctx->Scissor.X + ctx->Scissor.Width) {
width -= (px + width - (ctx->Scissor.X + ctx->Scissor.Width));
}
/* clip bottom */
if (py < ctx->Scissor.Y) {
scissoredUnpack.SkipRows += (ctx->Scissor.Y - py);
height -= (ctx->Scissor.Y - py);
py = ctx->Scissor.Y;
}
/* clip top */
if (py + height >= ctx->Scissor.Y + ctx->Scissor.Height) {
height -= (py + height - (ctx->Scissor.Y + ctx->Scissor.Height));
}
if (width <= 0 || height <= 0)
return;
}
else {
finalUnpack = unpack;
}
/* compute pixel value */
{
GLint r = (GLint) (ctx->Current.RasterColor[RCOMP] * 255.0f);
GLint g = (GLint) (ctx->Current.RasterColor[GCOMP] * 255.0f);
GLint b = (GLint) (ctx->Current.RasterColor[BCOMP] * 255.0f);
GLint a = (GLint) (ctx->Current.RasterColor[ACOMP] * 255.0f);
if (fxMesa->colDepth == 15) {
color = TDFXPACKCOLOR1555(b, g, r, a);
mode = GR_LFBWRITEMODE_1555;
} else {
color = fxMesa->bgrOrder ? TDFXPACKCOLOR565(r, g, b) : TDFXPACKCOLOR565(b, g, r);
mode = GR_LFBWRITEMODE_565;
}
}
info.size = sizeof(info);
if (!grLfbLock(GR_LFB_WRITE_ONLY,
fxMesa->currentFB,
mode,
GR_ORIGIN_UPPER_LEFT, FXTRUE, &info)) {
_swrast_Bitmap(ctx, px, py, width, height, unpack, bitmap);
return;
}
{
const GLint winX = 0;
const GLint winY = fxMesa->height - 1;
/* The dest stride depends on the hardware and whether we're drawing
* to the front or back buffer. This compile-time test seems to do
* the job for now.
*/
const GLint dstStride = info.strideInBytes / 2; /* stride in GLushorts */
GLint row;
/* compute dest address of bottom-left pixel in bitmap */
GLushort *dst = (GLushort *) info.lfbPtr
+ (winY - py) * dstStride + (winX + px);
for (row = 0; row < height; row++) {
const GLubyte *src =
(const GLubyte *) _mesa_image_address(finalUnpack,
bitmap, width, height,
GL_COLOR_INDEX, GL_BITMAP,
0, row, 0);
if (finalUnpack->LsbFirst) {
/* least significan bit first */
GLubyte mask = 1U << (finalUnpack->SkipPixels & 0x7);
GLint col;
for (col = 0; col < width; col++) {
if (*src & mask) {
dst[col] = color;
}
if (mask == 128U) {
src++;
mask = 1U;
}
else {
mask = mask << 1;
}
}
if (mask != 1)
src++;
}
else {
/* most significan bit first */
GLubyte mask = 128U >> (finalUnpack->SkipPixels & 0x7);
GLint col;
for (col = 0; col < width; col++) {
if (*src & mask) {
dst[col] = color;
}
if (mask == 1U) {
src++;
mask = 128U;
}
else {
mask = mask >> 1;
}
}
if (mask != 128)
src++;
}
dst -= dstStride;
}
}
grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->currentFB);
}
static void
fxDDDrawBitmap4 (GLcontext *ctx, GLint px, GLint py,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap)
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
SWcontext *swrast = SWRAST_CONTEXT(ctx);
GrLfbInfo_t info;
FxU32 color;
const struct gl_pixelstore_attrib *finalUnpack;
struct gl_pixelstore_attrib scissoredUnpack;
/* check if there's any raster operations enabled which we can't handle */
if ((swrast->_RasterMask & (ALPHATEST_BIT |
/*BLEND_BIT |*/ /* blending ok, through pixpipe */
DEPTH_BIT | /* could be done with RGB:DEPTH */
FOG_BIT | /* could be done with RGB:DEPTH */
LOGIC_OP_BIT |
/*CLIP_BIT |*/ /* clipping ok, below */
STENCIL_BIT |
/*MASKING_BIT |*/ /* masking ok, we're in 32bpp */
/*ALPHABUF_BIT |*//* alpha ok, we're in 32bpp */
MULTI_DRAW_BIT |
OCCLUSION_BIT | /* nope! at least not yet */
TEXTURE_BIT |
FRAGPROG_BIT))
) {
_swrast_Bitmap(ctx, px, py, width, height, unpack, bitmap);
return;
}
/* make sure the pixelpipe is configured correctly */
fxSetupFXUnits(ctx);
if (ctx->Scissor.Enabled) {
/* This is a bit tricky, but by carefully adjusting the px, py,
* width, height, skipPixels and skipRows values we can do
* scissoring without special code in the rendering loop.
*/
/* we'll construct a new pixelstore struct */
finalUnpack = &scissoredUnpack;
scissoredUnpack = *unpack;
if (scissoredUnpack.RowLength == 0)
scissoredUnpack.RowLength = width;
/* clip left */
if (px < ctx->Scissor.X) {
scissoredUnpack.SkipPixels += (ctx->Scissor.X - px);
width -= (ctx->Scissor.X - px);
px = ctx->Scissor.X;
}
/* clip right */
if (px + width >= ctx->Scissor.X + ctx->Scissor.Width) {
width -= (px + width - (ctx->Scissor.X + ctx->Scissor.Width));
}
/* clip bottom */
if (py < ctx->Scissor.Y) {
scissoredUnpack.SkipRows += (ctx->Scissor.Y - py);
height -= (ctx->Scissor.Y - py);
py = ctx->Scissor.Y;
}
/* clip top */
if (py + height >= ctx->Scissor.Y + ctx->Scissor.Height) {
height -= (py + height - (ctx->Scissor.Y + ctx->Scissor.Height));
}
if (width <= 0 || height <= 0)
return;
}
else {
finalUnpack = unpack;
}
/* compute pixel value */
{
GLint r = (GLint) (ctx->Current.RasterColor[RCOMP] * 255.0f);
GLint g = (GLint) (ctx->Current.RasterColor[GCOMP] * 255.0f);
GLint b = (GLint) (ctx->Current.RasterColor[BCOMP] * 255.0f);
GLint a = (GLint) (ctx->Current.RasterColor[ACOMP] * 255.0f);
color = TDFXPACKCOLOR8888(b, g, r, a);
}
info.size = sizeof(info);
if (!grLfbLock(GR_LFB_WRITE_ONLY,
fxMesa->currentFB,
GR_LFBWRITEMODE_8888,
GR_ORIGIN_UPPER_LEFT, FXTRUE, &info)) {
_swrast_Bitmap(ctx, px, py, width, height, unpack, bitmap);
return;
}
{
const GLint winX = 0;
const GLint winY = fxMesa->height - 1;
/* The dest stride depends on the hardware and whether we're drawing
* to the front or back buffer. This compile-time test seems to do
* the job for now.
*/
const GLint dstStride = info.strideInBytes / 4; /* stride in GLuints */
GLint row;
/* compute dest address of bottom-left pixel in bitmap */
GLuint *dst = (GLuint *) info.lfbPtr
+ (winY - py) * dstStride + (winX + px);
for (row = 0; row < height; row++) {
const GLubyte *src =
(const GLubyte *) _mesa_image_address(finalUnpack,
bitmap, width, height,
GL_COLOR_INDEX, GL_BITMAP,
0, row, 0);
if (finalUnpack->LsbFirst) {
/* least significan bit first */
GLubyte mask = 1U << (finalUnpack->SkipPixels & 0x7);
GLint col;
for (col = 0; col < width; col++) {
if (*src & mask) {
dst[col] = color;
}
if (mask == 128U) {
src++;
mask = 1U;
}
else {
mask = mask << 1;
}
}
if (mask != 1)
src++;
}
else {
/* most significan bit first */
GLubyte mask = 128U >> (finalUnpack->SkipPixels & 0x7);
GLint col;
for (col = 0; col < width; col++) {
if (*src & mask) {
dst[col] = color;
}
if (mask == 1U) {
src++;
mask = 128U;
}
else {
mask = mask >> 1;
}
}
if (mask != 128)
src++;
}
dst -= dstStride;
}
}
grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->currentFB);
}
static void
fxDDReadPixels565 (GLcontext * ctx,
GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *packing,
GLvoid *dstImage)
{
if (ctx->_ImageTransferState/* & (IMAGE_SCALE_BIAS_BIT|IMAGE_MAP_COLOR_BIT)*/) {
_swrast_ReadPixels(ctx, x, y, width, height, format, type,
packing, dstImage);
return;
}
else {
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GrLfbInfo_t info;
BEGIN_BOARD_LOCK();
info.size = sizeof(info);
if (grLfbLock(GR_LFB_READ_ONLY,
fxMesa->currentFB,
GR_LFBWRITEMODE_ANY,
GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
const GLint winX = 0;
const GLint winY = fxMesa->height - 1;
const GLint srcStride = info.strideInBytes / 2; /* stride in GLushorts */
const GLushort *src = (const GLushort *) info.lfbPtr
+ (winY - y) * srcStride + (winX + x);
GLubyte *dst = (GLubyte *) _mesa_image_address(packing, dstImage,
width, height, format,
type, 0, 0, 0);
GLint dstStride =
_mesa_image_row_stride(packing, width, format, type);
if (format == GL_RGB && type == GL_UNSIGNED_BYTE) {
/* convert 5R6G5B into 8R8G8B */
GLint row, col;
const GLint halfWidth = width >> 1;
const GLint extraPixel = (width & 1);
for (row = 0; row < height; row++) {
GLubyte *d = dst;
for (col = 0; col < halfWidth; col++) {
const GLuint pixel = ((const GLuint *) src)[col];
*d++ = FX_rgb_scale_5[(pixel >> 11) & 0x1f];
*d++ = FX_rgb_scale_6[(pixel >> 5) & 0x3f];
*d++ = FX_rgb_scale_5[ pixel & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 27) & 0x1f];
*d++ = FX_rgb_scale_6[(pixel >> 21) & 0x3f];
*d++ = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
}
if (extraPixel) {
GLushort pixel = src[width - 1];
*d++ = FX_rgb_scale_5[(pixel >> 11) & 0x1f];
*d++ = FX_rgb_scale_6[(pixel >> 5) & 0x3f];
*d++ = FX_rgb_scale_5[ pixel & 0x1f];
}
dst += dstStride;
src -= srcStride;
}
}
else if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
/* convert 5R6G5B into 8R8G8B8A */
GLint row, col;
const GLint halfWidth = width >> 1;
const GLint extraPixel = (width & 1);
for (row = 0; row < height; row++) {
GLubyte *d = dst;
for (col = 0; col < halfWidth; col++) {
const GLuint pixel = ((const GLuint *) src)[col];
*d++ = FX_rgb_scale_5[(pixel >> 11) & 0x1f];
*d++ = FX_rgb_scale_6[(pixel >> 5) & 0x3f];
*d++ = FX_rgb_scale_5[ pixel & 0x1f];
*d++ = 255;
*d++ = FX_rgb_scale_5[(pixel >> 27) & 0x1f];
*d++ = FX_rgb_scale_6[(pixel >> 21) & 0x3f];
*d++ = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
*d++ = 255;
}
if (extraPixel) {
const GLushort pixel = src[width - 1];
*d++ = FX_rgb_scale_5[(pixel >> 11) & 0x1f];
*d++ = FX_rgb_scale_6[(pixel >> 5) & 0x3f];
*d++ = FX_rgb_scale_5[ pixel & 0x1f];
*d++ = 255;
}
dst += dstStride;
src -= srcStride;
}
}
else if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
/* directly memcpy 5R6G5B pixels into client's buffer */
const GLint widthInBytes = width * 2;
GLint row;
for (row = 0; row < height; row++) {
MEMCPY(dst, src, widthInBytes);
dst += dstStride;
src -= srcStride;
}
}
else {
grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
END_BOARD_LOCK();
_swrast_ReadPixels(ctx, x, y, width, height, format, type,
packing, dstImage);
return;
}
grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
}
END_BOARD_LOCK();
}
}
static void
fxDDReadPixels555 (GLcontext * ctx,
GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *packing,
GLvoid *dstImage)
{
if (ctx->_ImageTransferState/* & (IMAGE_SCALE_BIAS_BIT|IMAGE_MAP_COLOR_BIT)*/) {
_swrast_ReadPixels(ctx, x, y, width, height, format, type,
packing, dstImage);
return;
}
else {
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GrLfbInfo_t info;
BEGIN_BOARD_LOCK();
info.size = sizeof(info);
if (grLfbLock(GR_LFB_READ_ONLY,
fxMesa->currentFB,
GR_LFBWRITEMODE_ANY,
GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
const GLint winX = 0;
const GLint winY = fxMesa->height - 1;
const GLint srcStride = info.strideInBytes / 2; /* stride in GLushorts */
const GLushort *src = (const GLushort *) info.lfbPtr
+ (winY - y) * srcStride + (winX + x);
GLubyte *dst = (GLubyte *) _mesa_image_address(packing, dstImage,
width, height, format,
type, 0, 0, 0);
GLint dstStride =
_mesa_image_row_stride(packing, width, format, type);
if (format == GL_RGB && type == GL_UNSIGNED_BYTE) {
/* convert 5R5G5B into 8R8G8B */
GLint row, col;
const GLint halfWidth = width >> 1;
const GLint extraPixel = (width & 1);
for (row = 0; row < height; row++) {
GLubyte *d = dst;
for (col = 0; col < halfWidth; col++) {
const GLuint pixel = ((const GLuint *) src)[col];
*d++ = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 5) & 0x1f];
*d++ = FX_rgb_scale_5[ pixel & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 26) & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 21) & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
}
if (extraPixel) {
GLushort pixel = src[width - 1];
*d++ = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 5) & 0x1f];
*d++ = FX_rgb_scale_5[ pixel & 0x1f];
}
dst += dstStride;
src -= srcStride;
}
}
else if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
/* convert 5R6G5B into 8R8G8B8A */
GLint row, col;
const GLint halfWidth = width >> 1;
const GLint extraPixel = (width & 1);
for (row = 0; row < height; row++) {
GLubyte *d = dst;
for (col = 0; col < halfWidth; col++) {
const GLuint pixel = ((const GLuint *) src)[col];
*d++ = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 5) & 0x1f];
*d++ = FX_rgb_scale_5[ pixel & 0x1f];
*d++ = (pixel & 0x8000) ? 255 : 0;
*d++ = FX_rgb_scale_5[(pixel >> 26) & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 21) & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
*d++ = (pixel & 0x80000000) ? 255 : 0;
}
if (extraPixel) {
const GLushort pixel = src[width - 1];
*d++ = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
*d++ = FX_rgb_scale_5[(pixel >> 5) & 0x1f];
*d++ = FX_rgb_scale_5[ pixel & 0x1f];
*d++ = (pixel & 0x8000) ? 255 : 0;
}
dst += dstStride;
src -= srcStride;
}
}
else if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
/* directly memcpy 5R5G5B pixels into client's buffer */
const GLint widthInBytes = width * 2;
GLint row;
for (row = 0; row < height; row++) {
MEMCPY(dst, src, widthInBytes);
dst += dstStride;
src -= srcStride;
}
}
else {
grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
END_BOARD_LOCK();
_swrast_ReadPixels(ctx, x, y, width, height, format, type,
packing, dstImage);
return;
}
grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
}
END_BOARD_LOCK();
}
}
static void
fxDDReadPixels8888 (GLcontext * ctx,
GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *packing,
GLvoid *dstImage)
{
if (ctx->_ImageTransferState/* & (IMAGE_SCALE_BIAS_BIT|IMAGE_MAP_COLOR_BIT)*/) {
_swrast_ReadPixels(ctx, x, y, width, height, format, type,
packing, dstImage);
return;
}
else {
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GrLfbInfo_t info;
BEGIN_BOARD_LOCK();
info.size = sizeof(info);
if (grLfbLock(GR_LFB_READ_ONLY,
fxMesa->currentFB,
GR_LFBWRITEMODE_ANY,
GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
const GLint winX = 0;
const GLint winY = fxMesa->height - 1;
const GLint srcStride = info.strideInBytes / 4; /* stride in GLuints */
const GLuint *src = (const GLuint *) info.lfbPtr
+ (winY - y) * srcStride + (winX + x);
GLubyte *dst = (GLubyte *) _mesa_image_address(packing, dstImage,
width, height, format,
type, 0, 0, 0);
GLint dstStride =
_mesa_image_row_stride(packing, width, format, type);
if (format == GL_RGB && type == GL_UNSIGNED_BYTE) {
/* convert 8A8R8G8B into 8R8G8B */
GLint row, col;
for (row = 0; row < height; row++) {
GLubyte *d = dst;
for (col = 0; col < width; col++) {
const GLuint pixel = ((const GLuint *) src)[col];
*d++ = pixel >> 16;
*d++ = pixel >> 8;
*d++ = pixel;
}
dst += dstStride;
src -= srcStride;
}
}
else if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
/* 8A8R8G8B pixels into client's buffer */
GLint row, col;
for (row = 0; row < height; row++) {
GLubyte *d = dst;
for (col = 0; col < width; col++) {
const GLuint pixel = ((const GLuint *) src)[col];
*d++ = pixel >> 16;
*d++ = pixel >> 8;
*d++ = pixel;
*d++ = pixel >> 24;
}
dst += dstStride;
src -= srcStride;
}
}
else if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
/* convert 8A8R8G8B into 5R6G5B */
GLint row, col;
for (row = 0; row < height; row++) {
GLushort *d = (GLushort *)dst;
for (col = 0; col < width; col++) {
const GLuint pixel = ((const GLuint *) src)[col];
*d++ = (((pixel >> 16) & 0xf8) << 8) |
(((pixel >> 8) & 0xfc) << 3) |
((pixel & 0xf8) >> 3);
}
dst += dstStride;
src -= srcStride;
}
}
else {
grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
END_BOARD_LOCK();
_swrast_ReadPixels(ctx, x, y, width, height, format, type,
packing, dstImage);
return;
}
grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
}
END_BOARD_LOCK();
}
}
/* [dBorca] Hack alert:
* not finished!!!
* revise fallback tests and fix scissor; implement new formats
* also write its siblings: 565 and 1555
*/
void
fxDDDrawPixels8888 (GLcontext * ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid * pixels)
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GrLfbInfo_t info;
if (ctx->Pixel.ZoomX != 1.0F ||
ctx->Pixel.ZoomY != 1.0F ||
(ctx->_ImageTransferState & (IMAGE_SCALE_BIAS_BIT|
IMAGE_MAP_COLOR_BIT)) ||
ctx->Color.AlphaEnabled ||
ctx->Depth.Test ||
ctx->Fog.Enabled ||
ctx->Scissor.Enabled ||
ctx->Stencil.Enabled ||
!ctx->Color.ColorMask[0] ||
!ctx->Color.ColorMask[1] ||
!ctx->Color.ColorMask[2] ||
!ctx->Color.ColorMask[3] ||
ctx->Color.ColorLogicOpEnabled ||
ctx->Texture._EnabledUnits ||
ctx->Depth.OcclusionTest ||
fxMesa->fallback)
{
_swrast_DrawPixels( ctx, x, y, width, height, format, type,
unpack, pixels );
return;
}
/* lock early to make sure cliprects are right */
BEGIN_BOARD_LOCK();
/* make sure the pixelpipe is configured correctly */
fxSetupFXUnits(ctx);
/* look for clipmasks, giveup if region obscured */
#if 0
if (ctx->Color.DrawBuffer == GL_FRONT) {
if (!inClipRects_Region(fxMesa, scrX, scrY, width, height)) {
END_BOARD_LOCK(fxMesa);
_swrast_DrawPixels(ctx, x, y, width, height, format, type, unpack, pixels);
return;
}
}
#endif
info.size = sizeof(info);
if (!grLfbLock(GR_LFB_WRITE_ONLY,
fxMesa->currentFB,
GR_LFBWRITEMODE_8888,
GR_ORIGIN_UPPER_LEFT, FXTRUE, &info)) {
_swrast_DrawPixels(ctx, x, y, width, height, format, type, unpack, pixels);
return;
}
{
const GLint winX = 0;
const GLint winY = fxMesa->height - 1;
const GLint dstStride = info.strideInBytes / 4; /* stride in GLuints */
GLuint *dst = (GLuint *) info.lfbPtr + (winY - y) * dstStride + (winX + x);
const GLubyte *src = (GLubyte *)_mesa_image_address(unpack, pixels,
width, height, format,
type, 0, 0, 0);
const GLint srcStride = _mesa_image_row_stride(unpack, width, format, type);
if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
/* directly memcpy 8A8R8G8B pixels to screen */
const GLint widthInBytes = width * 4;
GLint row;
for (row = 0; row < height; row++) {
MEMCPY(dst, src, widthInBytes);
dst -= dstStride;
src += srcStride;
}
}
else {
grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->currentFB);
END_BOARD_LOCK();
_swrast_DrawPixels(ctx, x, y, width, height, format, type, unpack, pixels);
return;
}
}
grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->currentFB);
END_BOARD_LOCK();
}
static void
fxDDFinish(GLcontext * ctx)
{
grFlush();
}
/* KW: Put the word Mesa in the render string because quakeworld
* checks for this rather than doing a glGet(GL_MAX_TEXTURE_SIZE).
* Why?
*/
static const GLubyte *
fxDDGetString(GLcontext * ctx, GLenum name)
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
switch (name) {
case GL_RENDERER:
return (GLubyte *)fxMesa->rendererString;
#if __WIN32__ /* hack to advertise vanilla extension names */
case GL_EXTENSIONS:
if (ctx->Extensions.String == NULL) {
GLubyte *ext = _mesa_make_extension_string(ctx);
if (ext != NULL) {
ctx->Extensions.String = _mesa_malloc(strlen((char *)ext) + 256);
if (ctx->Extensions.String != NULL) {
strcpy((char *)ctx->Extensions.String, (char *)ext);
/* put any additional extension names here */
#if 0
strcat((char *)ctx->Extensions.String, " 3DFX_set_global_palette");
#endif
#if __WIN32__
strcat((char *)ctx->Extensions.String, " WGL_3DFX_gamma_control");
strcat((char *)ctx->Extensions.String, " WGL_EXT_swap_control");
strcat((char *)ctx->Extensions.String, " WGL_EXT_extensions_string WGL_ARB_extensions_string");
#endif
/* put any additional extension names here */
_mesa_free(ext);
} else {
ctx->Extensions.String = ext;
}
}
}
return ctx->Extensions.String;
#endif
default:
return NULL;
}
}
static const struct tnl_pipeline_stage *fx_pipeline[] = {
&_tnl_vertex_transform_stage, /* TODO: Add the fastpath here */
&_tnl_normal_transform_stage,
&_tnl_lighting_stage,
/*&_tnl_fog_coordinate_stage,*/ /* TODO: Omit fog stage ZZZ ZZZ ZZZ */
&_tnl_texgen_stage,
&_tnl_texture_transform_stage,
&_tnl_point_attenuation_stage,
&_tnl_render_stage,
0,
};
int
fxDDInitFxMesaContext(fxMesaContext fxMesa)
{
int i;
GLcontext *ctx = fxMesa->glCtx;
FX_setupGrVertexLayout();
fxMesa->color = 0xffffffff;
fxMesa->clearC = 0;
fxMesa->clearA = 0;
fxMesa->stats.swapBuffer = 0;
fxMesa->stats.reqTexUpload = 0;
fxMesa->stats.texUpload = 0;
fxMesa->stats.memTexUpload = 0;
fxMesa->tmuSrc = FX_TMU_NONE;
fxMesa->lastUnitsMode = FX_UM_NONE;
fxTMInit(fxMesa);
/* FX units setup */
fxMesa->unitsState.alphaTestEnabled = GL_FALSE;
fxMesa->unitsState.alphaTestFunc = GL_ALWAYS;
fxMesa->unitsState.alphaTestRefValue = 0.0;
fxMesa->unitsState.blendEnabled = GL_FALSE;
fxMesa->unitsState.blendSrcFuncRGB = GR_BLEND_ONE;
fxMesa->unitsState.blendDstFuncRGB = GR_BLEND_ZERO;
fxMesa->unitsState.blendSrcFuncAlpha = GR_BLEND_ONE;
fxMesa->unitsState.blendDstFuncAlpha = GR_BLEND_ZERO;
fxMesa->unitsState.blendEq = GR_BLEND_OP_ADD;
fxMesa->unitsState.depthTestEnabled = GL_FALSE;
fxMesa->unitsState.depthMask = GL_TRUE;
fxMesa->unitsState.depthTestFunc = GL_LESS;
fxMesa->unitsState.depthBias = 0;
fxMesa->unitsState.stencilWriteMask = 0xff;
if (fxMesa->colDepth != 16) {
/* 32bpp mode or 15bpp mode */
fxMesa->Glide.grColorMaskExt(FXTRUE, FXTRUE, FXTRUE, fxMesa->haveHwAlpha);
} else {
/* 16 bpp mode */
grColorMask(FXTRUE, fxMesa->haveHwAlpha);
}
fxMesa->currentFB = fxMesa->haveDoubleBuffer ? GR_BUFFER_BACKBUFFER : GR_BUFFER_FRONTBUFFER;
grRenderBuffer(fxMesa->currentFB);
fxMesa->state = MALLOC(FX_grGetInteger(GR_GLIDE_STATE_SIZE));
fxMesa->fogTable = (GrFog_t *) MALLOC(FX_grGetInteger(GR_FOG_TABLE_ENTRIES) *
sizeof(GrFog_t));
if (!fxMesa->state || !fxMesa->fogTable) {
if (fxMesa->state)
FREE(fxMesa->state);
if (fxMesa->fogTable)
FREE(fxMesa->fogTable);
return 0;
}
if (fxMesa->haveZBuffer)
grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);
if (!fxMesa->bgrOrder) {
grLfbWriteColorFormat(GR_COLORFORMAT_ABGR);
}
fxMesa->textureAlign = FX_grGetInteger(GR_TEXTURE_ALIGN);
/* [koolsmoky] */
{
char *env;
int textureLevels = 0;
int textureSize = FX_grGetInteger(GR_MAX_TEXTURE_SIZE);
do {
textureLevels++;
} while ((textureSize >>= 0x1) & 0x7ff);
ctx->Const.MaxTextureLevels = textureLevels;
#if 1||FX_RESCALE_BIG_TEXURES
fxMesa->textureMaxLod = textureLevels - 1;
if ((env = getenv("MESA_FX_MAXLOD")) != NULL) {
int maxLevels = atoi(env) + 1;
if ((maxLevels <= MAX_TEXTURE_LEVELS) && (maxLevels > textureLevels)) {
ctx->Const.MaxTextureLevels = maxLevels;
}
}
#endif
}
ctx->Const.MaxTextureCoordUnits =
ctx->Const.MaxTextureImageUnits = fxMesa->haveTwoTMUs ? 2 : 1;
ctx->Const.MaxTextureUnits = MAX2(ctx->Const.MaxTextureImageUnits, ctx->Const.MaxTextureCoordUnits);
fxMesa->new_state = _NEW_ALL;
if (!fxMesa->haveHwStencil) {
/* don't touch stencil if there is none */
fxMesa->new_state &= ~FX_NEW_STENCIL;
}
/* Initialize the software rasterizer and helper modules.
*/
_swrast_CreateContext(ctx);
_ac_CreateContext(ctx);
_tnl_CreateContext(ctx);
_swsetup_CreateContext(ctx);
/* Install customized pipeline */
_tnl_destroy_pipeline(ctx);
_tnl_install_pipeline(ctx, fx_pipeline);
fxAllocVB(ctx);
fxSetupDDPointers(ctx);
fxDDInitTriFuncs(ctx);
/* Tell the software rasterizer to use pixel fog always.
*/
_swrast_allow_vertex_fog(ctx, GL_FALSE);
_swrast_allow_pixel_fog(ctx, GL_TRUE);
/* Tell tnl not to calculate or use vertex fog factors. (Needed to
* tell render stage not to clip fog coords).
*/
/* _tnl_calculate_vertex_fog( ctx, GL_FALSE ); */
fxDDInitExtensions(ctx);
#if 0
/* [dBorca] Hack alert:
* do we want dither? It just looks bad...
*/
grEnable(GR_ALLOW_MIPMAP_DITHER);
grTexNccTable(GR_NCCTABLE_NCC0); /* set this once... no multipass */
#endif
grGlideGetState((GrState *) fxMesa->state);
return 1;
}
/* Undo the above.
*/
void
fxDDDestroyFxMesaContext(fxMesaContext fxMesa)
{
_swsetup_DestroyContext(fxMesa->glCtx);
_tnl_DestroyContext(fxMesa->glCtx);
_ac_DestroyContext(fxMesa->glCtx);
_swrast_DestroyContext(fxMesa->glCtx);
if (fxMesa->state)
FREE(fxMesa->state);
if (fxMesa->fogTable)
FREE(fxMesa->fogTable);
fxFreeVB(fxMesa->glCtx);
}
void
fxDDInitExtensions(GLcontext * ctx)
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
#if 1 /* multipass ColorSum stage */
_mesa_enable_extension(ctx, "GL_EXT_secondary_color");
#endif
_mesa_enable_extension(ctx, "GL_EXT_point_parameters");
_mesa_enable_extension(ctx, "GL_EXT_paletted_texture");
_mesa_enable_extension(ctx, "GL_EXT_texture_lod_bias");
_mesa_enable_extension(ctx, "GL_EXT_shared_texture_palette");
_mesa_enable_extension(ctx, "GL_EXT_blend_func_separate");
if (fxMesa->haveTwoTMUs) {
_mesa_enable_extension(ctx, "GL_EXT_texture_env_add");
_mesa_enable_extension(ctx, "GL_ARB_multitexture");
}
if (fxMesa->haveHwStencil) {
_mesa_enable_extension( ctx, "GL_EXT_stencil_wrap" );
}
/* [dBorca] Hack alert:
* True texture compression can be done only on Napalm.
* We will advertise, however, generic texture compression
* on all Voodoo cards; the Mesa logic allows us to eventually
* fallback to uncompressed. This will fix those dumb applications
* which refuse to run w/o texture compression! We actually _can_
* do texture compression for pre-Napalm cores, through NCC. But
* NCC poses many issues:
* 1) NCC w/o DITHER_ERR has poor quality and NCC w/ DITHER_ERR is
* damn slow!
* 2) NCC compression cannot be used with multitexturing, because
* the decompression tables are not per TMU anymore (bear in mind
* that earlier Voodoos could handle 2 NCC tables for each TMU --
* just look for POINTCAST_PALETTE). As a last resort, we could
* fake NCC multitexturing through multipass rendering, but...
* ohwell, it's not worth the effort...
* This stand true for multitexturing palletized textures.
* 3) since NCC is not an OpenGL standard (as opposed to FXT1), we
* would need to plug deeper into the core... First, we would need to
* bind NCC to GL_COMPRESSED_RGB[A]. Then, we would need to trick
* Mesa into reporting our texture as compressed. Last, we would need
* to stash the NCC decompression table into the mipmap data and adjust
* CompressedSize accordingly!
*/
if (fxMesa->HaveTexus2) {
_mesa_enable_extension(ctx, "GL_ARB_texture_compression");
if (fxMesa->type >= GR_SSTTYPE_Voodoo4) {
_mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
_mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
_mesa_enable_extension(ctx, "GL_S3_s3tc");
}
}
if (fxMesa->HaveCmbExt) {
_mesa_enable_extension(ctx, "GL_EXT_texture_env_combine");
}
if (fxMesa->HavePixExt) {
_mesa_enable_extension(ctx, "GL_EXT_blend_subtract");
}
if (fxMesa->HaveMirExt) {
_mesa_enable_extension(ctx, "GL_ARB_texture_mirrored_repeat");
}
/* core-level extensions */
#if 1
_mesa_enable_extension(ctx, "GL_ARB_vertex_buffer_object");
#endif
}
/************************************************************************/
/************************************************************************/
/************************************************************************/
/* Check if the hardware supports the current context
*
* Performs similar work to fxDDChooseRenderState() - should be merged.
*/
GLuint
fx_check_IsInHardware(GLcontext * ctx)
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
if (ctx->RenderMode != GL_RENDER) {
return FX_FALLBACK_RENDER_MODE;
}
if (ctx->Stencil.Enabled && !fxMesa->haveHwStencil) {
return FX_FALLBACK_STENCIL;
}
if (ctx->Color._DrawDestMask != FRONT_LEFT_BIT && ctx->Color._DrawDestMask != BACK_LEFT_BIT) {
return FX_FALLBACK_DRAW_BUFFER;
}
if (ctx->Color.BlendEnabled) {
if (ctx->Color.BlendEquationRGB != GL_FUNC_ADD) {
if (!fxMesa->HavePixExt ||
((ctx->Color.BlendEquationRGB != GL_FUNC_SUBTRACT) &&
(ctx->Color.BlendEquationRGB != GL_FUNC_REVERSE_SUBTRACT))) {
return FX_FALLBACK_BLEND;
}
}
}
if (ctx->Color.ColorLogicOpEnabled && (ctx->Color.LogicOp != GL_COPY)) {
return FX_FALLBACK_LOGICOP;
}
#if 0 /* multipass ColorSum stage */
if (ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR) {
return FX_FALLBACK_SPECULAR;
}
#endif
if ((fxMesa->colDepth == 16) &&
((ctx->Color.ColorMask[RCOMP] != ctx->Color.ColorMask[GCOMP]) ||
(ctx->Color.ColorMask[GCOMP] != ctx->Color.ColorMask[BCOMP]))) {
return FX_FALLBACK_COLORMASK;
}
/* Unsupported texture/multitexture cases */
if (fxMesa->haveTwoTMUs) {
/* we can only do 2D textures */
if (ctx->Texture.Unit[0]._ReallyEnabled & ~TEXTURE_2D_BIT)
return FX_FALLBACK_TEXTURE_1D_3D;
if (ctx->Texture.Unit[1]._ReallyEnabled & ~TEXTURE_2D_BIT)
return FX_FALLBACK_TEXTURE_1D_3D;
if (ctx->Texture.Unit[0]._ReallyEnabled & TEXTURE_2D_BIT) {
if (fxMesa->type < GR_SSTTYPE_Voodoo2)
if (ctx->Texture.Unit[0].EnvMode == GL_BLEND &&
(ctx->Texture.Unit[1]._ReallyEnabled & TEXTURE_2D_BIT ||
ctx->Texture.Unit[0].EnvColor[0] != 0 ||
ctx->Texture.Unit[0].EnvColor[1] != 0 ||
ctx->Texture.Unit[0].EnvColor[2] != 0 ||
ctx->Texture.Unit[0].EnvColor[3] != 1)) {
return FX_FALLBACK_TEXTURE_ENV;
}
if (ctx->Texture.Unit[0]._Current->Image[0][0]->Border > 0)
return FX_FALLBACK_TEXTURE_BORDER;
}
if (ctx->Texture.Unit[1]._ReallyEnabled & TEXTURE_2D_BIT) {
if (fxMesa->type < GR_SSTTYPE_Voodoo2)
if (ctx->Texture.Unit[1].EnvMode == GL_BLEND)
return FX_FALLBACK_TEXTURE_ENV;
if (ctx->Texture.Unit[1]._Current->Image[0][0]->Border > 0)
return FX_FALLBACK_TEXTURE_BORDER;
}
if (TDFX_DEBUG & (VERBOSE_DRIVER | VERBOSE_TEXTURE))
fprintf(stderr, "fx_check_IsInHardware: envmode is %s/%s\n",
_mesa_lookup_enum_by_nr(ctx->Texture.Unit[0].EnvMode),
_mesa_lookup_enum_by_nr(ctx->Texture.Unit[1].EnvMode));
/* KW: This was wrong (I think) and I changed it... which doesn't mean
* it is now correct...
* BP: The old condition just seemed to test if both texture units
* were enabled. That's easy!
*/
if (ctx->Texture._EnabledUnits == 0x3) {
/* Can't use multipass to blend a multitextured triangle - fall
* back to software.
*/
if (!fxMesa->haveTwoTMUs && ctx->Color.BlendEnabled) {
return FX_FALLBACK_TEXTURE_MULTI;
}
if ((ctx->Texture.Unit[0].EnvMode != ctx->Texture.Unit[1].EnvMode) &&
(ctx->Texture.Unit[0].EnvMode != GL_MODULATE) &&
(ctx->Texture.Unit[0].EnvMode != GL_REPLACE)) { /* q2, seems ok... */
if (TDFX_DEBUG & VERBOSE_DRIVER)
fprintf(stderr, "fx_check_IsInHardware: unsupported multitex env mode\n");
return FX_FALLBACK_TEXTURE_MULTI;
}
}
}
else {
/* we have just one texture unit */
if (ctx->Texture._EnabledUnits > 0x1) {
return FX_FALLBACK_TEXTURE_MULTI;
}
if (fxMesa->type < GR_SSTTYPE_Voodoo2)
if ((ctx->Texture.Unit[0]._ReallyEnabled & TEXTURE_2D_BIT) &&
(ctx->Texture.Unit[0].EnvMode == GL_BLEND)) {
return FX_FALLBACK_TEXTURE_ENV;
}
}
return 0;
}
static void
fxDDUpdateDDPointers(GLcontext * ctx, GLuint new_state)
{
/* TNLcontext *tnl = TNL_CONTEXT(ctx);*/
fxMesaContext fxMesa = FX_CONTEXT(ctx);
if (TDFX_DEBUG & VERBOSE_DRIVER) {
fprintf(stderr, "fxDDUpdateDDPointers(%08x)\n", new_state);
}
_swrast_InvalidateState(ctx, new_state);
_ac_InvalidateState(ctx, new_state);
_tnl_InvalidateState(ctx, new_state);
_swsetup_InvalidateState(ctx, new_state);
fxMesa->new_gl_state |= new_state;
}
void
fxSetupDDPointers(GLcontext * ctx)
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
TNLcontext *tnl = TNL_CONTEXT(ctx);
if (TDFX_DEBUG & VERBOSE_DRIVER) {
fprintf(stderr, "fxSetupDDPointers()\n");
}
ctx->Driver.UpdateState = fxDDUpdateDDPointers;
ctx->Driver.GetString = fxDDGetString;
ctx->Driver.ClearIndex = NULL;
ctx->Driver.ClearColor = fxDDClearColor;
ctx->Driver.Clear = fxDDClear;
ctx->Driver.DrawBuffer = fxDDSetDrawBuffer;
ctx->Driver.GetBufferSize = fxDDBufferSize;
switch (fxMesa->colDepth) {
case 15:
ctx->Driver.ReadPixels = fxDDReadPixels555;
ctx->Driver.Bitmap = fxDDDrawBitmap2;
break;
case 16:
ctx->Driver.ReadPixels = fxDDReadPixels565;
ctx->Driver.Bitmap = fxDDDrawBitmap2;
break;
case 32:
ctx->Driver.DrawPixels = fxDDDrawPixels8888;
ctx->Driver.ReadPixels = fxDDReadPixels8888;
ctx->Driver.Bitmap = fxDDDrawBitmap4;
break;
}
ctx->Driver.Finish = fxDDFinish;
ctx->Driver.Flush = NULL;
ctx->Driver.ChooseTextureFormat = fxDDChooseTextureFormat;
ctx->Driver.TexImage2D = fxDDTexImage2D;
ctx->Driver.TexSubImage2D = fxDDTexSubImage2D;
ctx->Driver.CompressedTexImage2D = fxDDCompressedTexImage2D;
ctx->Driver.CompressedTexSubImage2D = fxDDCompressedTexSubImage2D;
ctx->Driver.IsCompressedFormat = fxDDIsCompressedFormat;
ctx->Driver.CompressedTextureSize = fxDDCompressedTextureSize;
ctx->Driver.TexEnv = fxDDTexEnv;
ctx->Driver.TexParameter = fxDDTexParam;
ctx->Driver.BindTexture = fxDDTexBind;
ctx->Driver.DeleteTexture = fxDDTexDel;
ctx->Driver.IsTextureResident = fxDDIsTextureResident;
ctx->Driver.UpdateTexturePalette = fxDDTexPalette;
ctx->Driver.AlphaFunc = fxDDAlphaFunc;
ctx->Driver.BlendFuncSeparate = fxDDBlendFuncSeparate;
ctx->Driver.BlendEquationSeparate = fxDDBlendEquationSeparate;
ctx->Driver.DepthFunc = fxDDDepthFunc;
ctx->Driver.DepthMask = fxDDDepthMask;
ctx->Driver.ColorMask = fxDDColorMask;
ctx->Driver.Fogfv = fxDDFogfv;
ctx->Driver.Scissor = fxDDScissor;
ctx->Driver.FrontFace = fxDDFrontFace;
ctx->Driver.CullFace = fxDDCullFace;
ctx->Driver.ShadeModel = fxDDShadeModel;
ctx->Driver.Enable = fxDDEnable;
if (fxMesa->haveHwStencil) {
ctx->Driver.StencilFunc = fxDDStencilFunc;
ctx->Driver.StencilMask = fxDDStencilMask;
ctx->Driver.StencilOp = fxDDStencilOp;
}
fxSetupDDSpanPointers(ctx);
fxDDUpdateDDPointers(ctx, ~0);
}
#else
/*
* Need this to provide at least one external definition.
*/
extern int gl_fx_dummy_function_dd(void);
int
gl_fx_dummy_function_dd(void)
{
return 0;
}
#endif /* FX */
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