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/*
* Copyright 2001 by Alan Hourihane.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Alan Hourihane not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Alan Hourihane makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* Authors: Alan Hourihane, <alanh@tungstengraphics.com>
*
* 3DLabs Gamma driver.
*
*/
#include "glheader.h"
#include "context.h"
#include "macros.h"
#include "imports.h"
#include "mtypes.h"
#include "tnl/t_context.h"
#include "gamma_context.h"
#include "gamma_tris.h"
#include "gamma_vb.h"
/* !! Should template this eventually !! */
static void gamma_emit( GLcontext *ctx, GLuint start, GLuint end)
{
gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
GLfloat (*coord)[4];
GLuint coord_stride;
GLfloat (*col)[4];
GLuint col_stride;
int i;
GLuint tc0_stride = 0;
GLfloat (*tc0)[4] = 0;
GLuint tc0_size = 0;
col = VB->ColorPtr[0]->data;
col_stride = VB->ColorPtr[0]->stride;
if (ctx->Texture.Unit[0]._ReallyEnabled) {
tc0_stride = VB->TexCoordPtr[0]->stride;
tc0 = VB->TexCoordPtr[0]->data;
tc0_size = VB->TexCoordPtr[0]->size;
coord = VB->ClipPtr->data;
coord_stride = VB->ClipPtr->stride;
} else {
coord = VB->NdcPtr->data;
coord_stride = VB->NdcPtr->stride;
}
if (ctx->Texture.Unit[0]._ReallyEnabled && tc0_size == 4) {
for (i=start; i < end; i++) {
CHECK_DMA_BUFFER(gmesa, 9);
WRITEF(gmesa->buf, Tq4, tc0[i][3]);
WRITEF(gmesa->buf, Tr4, tc0[i][2]);
WRITEF(gmesa->buf, Tt4, tc0[i][0]);
WRITEF(gmesa->buf, Ts4, tc0[i][1]);
WRITE(gmesa->buf, PackedColor4, *(u_int32_t*)col[i]);
WRITEF(gmesa->buf, Vw, coord[i][3]);
WRITEF(gmesa->buf, Vz, coord[i][2]);
WRITEF(gmesa->buf, Vy, coord[i][1]);
WRITEF(gmesa->buf, Vx4, coord[i][0]);
}
} else if (ctx->Texture.Unit[0]._ReallyEnabled && tc0_size == 2) {
for (i=start; i < end; i++) {
CHECK_DMA_BUFFER(gmesa, 7);
WRITEF(gmesa->buf, Tt2, tc0[i][0]);
WRITEF(gmesa->buf, Ts2, tc0[i][1]);
WRITE(gmesa->buf, PackedColor4, *(u_int32_t*)col[i]);
WRITEF(gmesa->buf, Vw, coord[i][3]);
WRITEF(gmesa->buf, Vz, coord[i][2]);
WRITEF(gmesa->buf, Vy, coord[i][1]);
WRITEF(gmesa->buf, Vx4, coord[i][0]);
}
} else {
for (i=start; i < end; i++) {
CHECK_DMA_BUFFER(gmesa, 4);
WRITE(gmesa->buf, PackedColor4, *(u_int32_t*)col[i]);
WRITEF(gmesa->buf, Vz, coord[i][2]);
WRITEF(gmesa->buf, Vy, coord[i][1]);
WRITEF(gmesa->buf, Vx3, coord[i][0]);
}
}
}
#define HAVE_POINTS 1
#define HAVE_LINES 1
#define HAVE_LINE_STRIPS 1
#define HAVE_TRIANGLES 1
#define HAVE_TRI_STRIPS 1
#define HAVE_TRI_STRIP_1 0
#define HAVE_TRI_FANS 1
#define HAVE_QUADS 1
#define HAVE_QUAD_STRIPS 1
#define HAVE_POLYGONS 1
#define HAVE_ELTS 0
static const GLuint hw_prim[GL_POLYGON+1] = {
B_PrimType_Points,
B_PrimType_Lines,
B_PrimType_LineLoop,
B_PrimType_LineStrip,
B_PrimType_Triangles,
B_PrimType_TriangleStrip,
B_PrimType_TriangleFan,
B_PrimType_Quads,
B_PrimType_QuadStrip,
B_PrimType_Polygon
};
static __inline void gammaStartPrimitive( gammaContextPtr gmesa, GLenum prim )
{
CHECK_DMA_BUFFER(gmesa, 1);
WRITE(gmesa->buf, Begin, gmesa->Begin | hw_prim[prim]);
}
static __inline void gammaEndPrimitive( gammaContextPtr gmesa )
{
GLcontext *ctx = gmesa->glCtx;
if ( ctx->Line.SmoothFlag ||
ctx->Polygon.SmoothFlag ||
ctx->Point.SmoothFlag ) {
CHECK_DMA_BUFFER(gmesa, 1);
WRITE(gmesa->buf, FlushSpan, 0);
}
CHECK_DMA_BUFFER(gmesa, 1);
WRITE(gmesa->buf, End, 0);
}
#define LOCAL_VARS gammaContextPtr gmesa = GAMMA_CONTEXT(ctx)
#define INIT( prim ) gammaStartPrimitive( gmesa, prim )
#define FLUSH() gammaEndPrimitive( gmesa )
#define GET_CURRENT_VB_MAX_VERTS() \
(gmesa->bufSize - gmesa->bufCount) / 2
#define GET_SUBSEQUENT_VB_MAX_VERTS() \
GAMMA_DMA_BUFFER_SIZE / 2
#define ALLOC_VERTS( nr ) (void *)0 /* todo: explicit alloc */
#define EMIT_VERTS( ctx, j, nr, buf ) (gamma_emit(ctx, j, (j)+(nr)), (void *)0)
#define TAG(x) gamma_##x
#include "tnl_dd/t_dd_dmatmp.h"
/**********************************************************************/
/* Render pipeline stage */
/**********************************************************************/
static GLboolean gamma_run_render( GLcontext *ctx,
struct tnl_pipeline_stage *stage )
{
gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
GLuint i;
tnl_render_func *tab;
/* GH: THIS IS A HACK!!! */
if (VB->ClipOrMask || gmesa->RenderIndex != 0)
return GL_TRUE; /* don't handle clipping here */
/* We don't do elts */
if (VB->Elts || !gamma_validate_render( ctx, VB ))
return GL_TRUE;
tab = TAG(render_tab_verts);
tnl->Driver.Render.Start( ctx );
for (i = 0 ; i < VB->PrimitiveCount ; i++)
{
GLuint prim = VB->Primitive[i].mode;
GLuint start = VB->Primitive[i].start;
GLuint length = VB->Primitive[i].count;
if (!length)
continue;
tab[prim & PRIM_MODE_MASK]( ctx, start, start + length, prim);
}
tnl->Driver.Render.Finish( ctx );
return GL_FALSE; /* finished the pipe */
}
const struct tnl_pipeline_stage _gamma_render_stage =
{
"gamma render",
NULL,
NULL,
NULL,
NULL,
gamma_run_render /* run */
};
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