From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- .../Mesa/src/mesa/drivers/dri/ffb/ffb_tris.c | 945 +++++++++++++++++++++ 1 file changed, 945 insertions(+) create mode 100644 nx-X11/extras/Mesa/src/mesa/drivers/dri/ffb/ffb_tris.c (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/dri/ffb/ffb_tris.c') diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/ffb/ffb_tris.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/ffb/ffb_tris.c new file mode 100644 index 000000000..ca0e514dc --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/drivers/dri/ffb/ffb_tris.c @@ -0,0 +1,945 @@ +/* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_tris.c,v 1.3 2002/10/30 12:51:28 alanh Exp $ + * + * GLX Hardware Device Driver for Sun Creator/Creator3D + * Copyright (C) 2000, 2001 David S. Miller + * + * 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 + * DAVID MILLER, OR ANY OTHER CONTRIBUTORS 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. + * + * + * David S. Miller + */ + +#include "glheader.h" +#include "mtypes.h" +#include "macros.h" +#include "swrast/swrast.h" +#include "swrast_setup/swrast_setup.h" +#include "swrast/s_context.h" +#include "tnl/t_context.h" +#include "tnl/t_pipeline.h" + +#include "ffb_context.h" +#include "ffb_tris.h" +#include "ffb_lines.h" +#include "ffb_lock.h" +#include "ffb_points.h" +#include "ffb_state.h" +#include "ffb_vb.h" + +#undef TRI_DEBUG +#undef FFB_RENDER_TRACE +#undef STATE_TRACE + +#ifdef TRI_DEBUG +static void ffb_print_vertex(const ffb_vertex *v) +{ + fprintf(stderr, "Vertex @(%p): " + "X[%f] Y[%f] Z[%f]\n", + v, v->x, v->y, v->z); + fprintf(stderr, "Vertex @(%p): " + "A[%f] R[%f] G[%f] B[%f]\n", + v, + v->color[0].alpha, + v->color[0].red, + v->color[0].green, + v->color[0].blue); +} +#define FFB_DUMP_VERTEX(V) ffb_print_vertex(V) +#else +#define FFB_DUMP_VERTEX(V) do { } while(0) +#endif + +#define FFB_ALPHA_BIT 0x01 +#define FFB_FLAT_BIT 0x02 +#define FFB_TRI_CULL_BIT 0x04 +#define MAX_FFB_RENDER_FUNCS 0x08 + +/*********************************************************************** + * Build low-level triangle/quad rasterize functions * + ***********************************************************************/ + +#define FFB_TRI_FLAT_BIT 0x01 +#define FFB_TRI_ALPHA_BIT 0x02 +/*#define FFB_TRI_CULL_BIT 0x04*/ + +static ffb_tri_func ffb_tri_tab[0x8]; +static ffb_quad_func ffb_quad_tab[0x8]; + +#define IND (0) +#define TAG(x) x +#include "ffb_tritmp.h" + +#define IND (FFB_TRI_FLAT_BIT) +#define TAG(x) x##_flat +#include "ffb_tritmp.h" + +#define IND (FFB_TRI_CULL_BIT) +#define TAG(x) x##_cull +#include "ffb_tritmp.h" + +#define IND (FFB_TRI_CULL_BIT|FFB_TRI_FLAT_BIT) +#define TAG(x) x##_cull_flat +#include "ffb_tritmp.h" + +#define IND (FFB_TRI_ALPHA_BIT) +#define TAG(x) x##_alpha +#include "ffb_tritmp.h" + +#define IND (FFB_TRI_ALPHA_BIT|FFB_TRI_FLAT_BIT) +#define TAG(x) x##_alpha_flat +#include "ffb_tritmp.h" + +#define IND (FFB_TRI_ALPHA_BIT|FFB_TRI_CULL_BIT) +#define TAG(x) x##_alpha_cull +#include "ffb_tritmp.h" + +#define IND (FFB_TRI_ALPHA_BIT|FFB_TRI_CULL_BIT|FFB_TRI_FLAT_BIT) +#define TAG(x) x##_alpha_cull_flat +#include "ffb_tritmp.h" + +static void init_tri_tab(void) +{ + ffb_init(); + ffb_init_flat(); + ffb_init_cull(); + ffb_init_cull_flat(); + ffb_init_alpha(); + ffb_init_alpha_flat(); + ffb_init_alpha_cull(); + ffb_init_alpha_cull_flat(); +} + +/* Build a SWvertex from a hardware vertex. */ +static void ffb_translate_vertex(GLcontext *ctx, const ffb_vertex *src, + SWvertex *dst) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + GLfloat *m = ctx->Viewport._WindowMap.m; + const GLfloat sx = m[0]; + const GLfloat sy = m[5]; + const GLfloat sz = m[10]; + const GLfloat tx = m[12]; + const GLfloat ty = m[13]; + const GLfloat tz = m[14]; + + dst->win[0] = sx * src->x + tx; + dst->win[1] = sy * src->y + ty; + dst->win[2] = sz * src->z + tz; + dst->win[3] = 1.0; + + dst->color[0] = FFB_UBYTE_FROM_COLOR(src->color[0].red); + dst->color[1] = FFB_UBYTE_FROM_COLOR(src->color[0].green); + dst->color[2] = FFB_UBYTE_FROM_COLOR(src->color[0].blue); + dst->color[3] = FFB_UBYTE_FROM_COLOR(src->color[0].alpha); +} + +/*********************************************************************** + * Build fallback triangle/quad rasterize functions * + ***********************************************************************/ + +static void ffb_fallback_triangle(GLcontext *ctx, ffb_vertex *v0, + ffb_vertex *v1, ffb_vertex *v2) +{ + SWvertex v[3]; + + ffb_translate_vertex(ctx, v0, &v[0]); + ffb_translate_vertex(ctx, v1, &v[1]); + ffb_translate_vertex(ctx, v2, &v[2]); + + _swrast_Triangle(ctx, &v[0], &v[1], &v[2]); +} + +static void ffb_fallback_quad(GLcontext *ctx, + ffb_vertex *v0, ffb_vertex *v1, + ffb_vertex *v2, ffb_vertex *v3) +{ + SWvertex v[4]; + + ffb_translate_vertex(ctx, v0, &v[0]); + ffb_translate_vertex(ctx, v1, &v[1]); + ffb_translate_vertex(ctx, v2, &v[2]); + ffb_translate_vertex(ctx, v3, &v[3]); + + _swrast_Quad(ctx, &v[0], &v[1], &v[2], &v[3]); +} + +void ffb_fallback_line(GLcontext *ctx, ffb_vertex *v0, ffb_vertex *v1) +{ + SWvertex v[2]; + + ffb_translate_vertex(ctx, v0, &v[0]); + ffb_translate_vertex(ctx, v1, &v[1]); + + _swrast_Line(ctx, &v[0], &v[1]); +} + +void ffb_fallback_point(GLcontext *ctx, ffb_vertex *v0) +{ + SWvertex v[1]; + + ffb_translate_vertex(ctx, v0, &v[0]); + + _swrast_Point(ctx, &v[0]); +} + +/*********************************************************************** + * Rasterization functions for culled tris/quads * + ***********************************************************************/ + +static void ffb_nodraw_triangle(GLcontext *ctx, ffb_vertex *v0, + ffb_vertex *v1, ffb_vertex *v2) +{ + (void) (ctx && v0 && v1 && v2); +} + +static void ffb_nodraw_quad(GLcontext *ctx, + ffb_vertex *v0, ffb_vertex *v1, + ffb_vertex *v2, ffb_vertex *v3) +{ + (void) (ctx && v0 && v1 && v2 && v3); +} + +static void ffb_update_cullsign(GLcontext *ctx) +{ + GLfloat backface_sign = 1; + + switch (ctx->Polygon.CullFaceMode) { + case GL_BACK: + if (ctx->Polygon.FrontFace==GL_CCW) + backface_sign = -1; + break; + + case GL_FRONT: + if (ctx->Polygon.FrontFace!=GL_CCW) + backface_sign = -1; + break; + + default: + break; + }; + + FFB_CONTEXT(ctx)->backface_sign = backface_sign; +} + +/*********************************************************************** + * Choose triangle/quad rasterize functions * + ***********************************************************************/ + +void ffbChooseTriangleState(GLcontext *ctx) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + GLuint flags = ctx->_TriangleCaps; + GLuint ind = 0; + + if (flags & DD_TRI_SMOOTH) { + fmesa->draw_tri = ffb_fallback_triangle; + fmesa->draw_quad = ffb_fallback_quad; + return; + } + + if (flags & DD_FLATSHADE) + ind |= FFB_TRI_FLAT_BIT; + + if (ctx->Polygon.CullFlag) { + if (ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) { + fmesa->draw_tri = ffb_nodraw_triangle; + fmesa->draw_quad = ffb_nodraw_quad; + return; + } + + ind |= FFB_TRI_CULL_BIT; + ffb_update_cullsign(ctx); + } else + FFB_CONTEXT(ctx)->backface_sign = 0; + + /* If blending or the alpha test is enabled we need to + * provide alpha components to the chip, else we can + * do without it and thus feed vertex data to the chip + * more efficiently. + */ + if (ctx->Color.BlendEnabled || ctx->Color.AlphaEnabled) + ind |= FFB_TRI_ALPHA_BIT; + + fmesa->draw_tri = ffb_tri_tab[ind]; + fmesa->draw_quad = ffb_quad_tab[ind]; +} + +static const GLenum reduced_prim[GL_POLYGON+1] = { + GL_POINTS, + GL_LINES, + GL_LINES, + GL_LINES, + GL_TRIANGLES, + GL_TRIANGLES, + GL_TRIANGLES, + GL_TRIANGLES, + GL_TRIANGLES, + GL_TRIANGLES +}; + +static void ffbRenderPrimitive(GLcontext *ctx, GLenum prim); +static void ffbRasterPrimitive(GLcontext *ctx, GLenum rprim); + +/*********************************************************************** + * Build render functions from dd templates * + ***********************************************************************/ + +#define FFB_OFFSET_BIT 0x01 +#define FFB_TWOSIDE_BIT 0x02 +#define FFB_UNFILLED_BIT 0x04 +#define FFB_MAX_TRIFUNC 0x08 + +static struct { + tnl_triangle_func triangle; + tnl_quad_func quad; +} rast_tab[FFB_MAX_TRIFUNC]; + +#define DO_OFFSET (IND & FFB_OFFSET_BIT) +#define DO_UNFILLED (IND & FFB_UNFILLED_BIT) +#define DO_TWOSIDE (IND & FFB_TWOSIDE_BIT) +#define DO_FLAT 0 +#define DO_QUAD 1 +#define DO_FULL_QUAD 1 +#define DO_TRI 1 +#define DO_LINE 0 +#define DO_POINTS 0 + +#define QUAD( a, b, c, d ) fmesa->draw_quad( ctx, a, b, c, d ) +#define TRI( a, b, c ) fmesa->draw_tri( ctx, a, b, c ) +#define LINE( a, b ) fmesa->draw_line( ctx, a, b ) +#define POINT( a ) fmesa->draw_point( ctx, a ) + +#define HAVE_BACK_COLORS 1 +#define HAVE_RGBA 1 +#define HAVE_SPEC 0 +#define HAVE_HW_FLATSHADE 1 +#define VERTEX ffb_vertex +#define TAB rast_tab + +#define UNFILLED_TRI unfilled_tri +#define UNFILLED_QUAD unfilled_quad +#define DEPTH_SCALE (fmesa->depth_scale) +#define VERT_X(_v) (_v->x) +#define VERT_Y(_v) (_v->y) +#define VERT_Z(_v) (_v->z) +#define AREA_IS_CCW( a ) (a < fmesa->ffb_zero) +#define GET_VERTEX(e) (&fmesa->verts[e]) +#define INSANE_VERTICES +#define VERT_SET_Z(v,val) ((v)->z = (val)) +#define VERT_Z_ADD(v,val) ((v)->z += (val)) + +#define VERT_COPY_RGBA1( _v ) _v->color[0] = _v->color[1] +#define VERT_COPY_RGBA( v0, v1 ) v0->color[0] = v1->color[0] +#define VERT_SAVE_RGBA( idx ) color[idx] = v[idx]->color[0] +#define VERT_RESTORE_RGBA( idx ) v[idx]->color[0] = color[idx] + +#define LOCAL_VARS(n) \ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); \ + __DRIdrawablePrivate *dPriv = fmesa->driDrawable; \ + ffb_color color[n]; \ + (void) color; (void) dPriv; + +/*********************************************************************** + * Helpers for rendering unfilled primitives * + ***********************************************************************/ + +#define RASTERIZE(x) if (fmesa->raster_primitive != reduced_prim[x]) \ + ffbRasterPrimitive( ctx, reduced_prim[x] ) +#define RENDER_PRIMITIVE fmesa->render_primitive +#define TAG(x) x +#include "tnl_dd/t_dd_unfilled.h" + +/*********************************************************************** + * Generate GL render functions * + ***********************************************************************/ + +#define IND (0) +#define TAG(x) x +#include "tnl_dd/t_dd_tritmp.h" + +#define IND (FFB_OFFSET_BIT) +#define TAG(x) x##_offset +#include "tnl_dd/t_dd_tritmp.h" + +#define IND (FFB_TWOSIDE_BIT) +#define TAG(x) x##_twoside +#include "tnl_dd/t_dd_tritmp.h" + +#define IND (FFB_TWOSIDE_BIT|FFB_OFFSET_BIT) +#define TAG(x) x##_twoside_offset +#include "tnl_dd/t_dd_tritmp.h" + +#define IND (FFB_UNFILLED_BIT) +#define TAG(x) x##_unfilled +#include "tnl_dd/t_dd_tritmp.h" + +#define IND (FFB_OFFSET_BIT|FFB_UNFILLED_BIT) +#define TAG(x) x##_offset_unfilled +#include "tnl_dd/t_dd_tritmp.h" + +#define IND (FFB_TWOSIDE_BIT|FFB_UNFILLED_BIT) +#define TAG(x) x##_twoside_unfilled +#include "tnl_dd/t_dd_tritmp.h" + +#define IND (FFB_TWOSIDE_BIT|FFB_OFFSET_BIT|FFB_UNFILLED_BIT) +#define TAG(x) x##_twoside_offset_unfilled +#include "tnl_dd/t_dd_tritmp.h" + +static void init_rast_tab( void ) +{ + init(); + init_offset(); + init_twoside(); + init_twoside_offset(); + init_unfilled(); + init_offset_unfilled(); + init_twoside_unfilled(); + init_twoside_offset_unfilled(); +} + +/**********************************************************************/ +/* Render clipped primitives */ +/**********************************************************************/ + +static void ffbRenderClippedPolygon(GLcontext *ctx, const GLuint *elts, GLuint n) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLuint prim = fmesa->render_primitive; + + /* Render the new vertices as an unclipped polygon. */ + { + GLuint *tmp = VB->Elts; + VB->Elts = (GLuint *)elts; + tnl->Driver.Render.PrimTabElts[GL_POLYGON](ctx, 0, n, PRIM_BEGIN|PRIM_END); + VB->Elts = tmp; + } + + /* Restore the render primitive. */ + if (prim != GL_POLYGON) + tnl->Driver.Render.PrimitiveNotify(ctx, prim); +} + +static void ffbRenderClippedLine(GLcontext *ctx, GLuint ii, GLuint jj) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + tnl->Driver.Render.Line(ctx, ii, jj); +} + +/**********************************************************************/ +/* Render unclipped begin/end objects */ +/**********************************************************************/ + +static void ffb_vb_noop(GLcontext *ctx, GLuint start, GLuint count, GLuint flags) +{ + (void)(ctx && start && count && flags); +} + +#define ELT(x) x + +#define IND 0 +#define TAG(x) x +#include "ffb_rendertmp.h" + +#define IND (FFB_FLAT_BIT) +#define TAG(x) x##_flat +#include "ffb_rendertmp.h" + +#define IND (FFB_ALPHA_BIT) +#define TAG(x) x##_alpha +#include "ffb_rendertmp.h" + +#define IND (FFB_FLAT_BIT | FFB_ALPHA_BIT) +#define TAG(x) x##_flat_alpha +#include "ffb_rendertmp.h" + +#define IND (FFB_TRI_CULL_BIT) +#define TAG(x) x##_tricull +#include "ffb_rendertmp.h" + +#define IND (FFB_FLAT_BIT | FFB_TRI_CULL_BIT) +#define TAG(x) x##_flat_tricull +#include "ffb_rendertmp.h" + +#define IND (FFB_ALPHA_BIT | FFB_TRI_CULL_BIT) +#define TAG(x) x##_alpha_tricull +#include "ffb_rendertmp.h" + +#define IND (FFB_FLAT_BIT | FFB_ALPHA_BIT | FFB_TRI_CULL_BIT) +#define TAG(x) x##_flat_alpha_tricull +#include "ffb_rendertmp.h" + +#undef ELT +#define ELT(x) elt[x] + +#define IND 0 +#define TAG(x) x##_elt +#include "ffb_rendertmp.h" + +#define IND (FFB_FLAT_BIT) +#define TAG(x) x##_flat_elt +#include "ffb_rendertmp.h" + +#define IND (FFB_ALPHA_BIT) +#define TAG(x) x##_alpha_elt +#include "ffb_rendertmp.h" + +#define IND (FFB_FLAT_BIT | FFB_ALPHA_BIT) +#define TAG(x) x##_flat_alpha_elt +#include "ffb_rendertmp.h" + +#define IND (FFB_TRI_CULL_BIT) +#define TAG(x) x##_tricull_elt +#include "ffb_rendertmp.h" + +#define IND (FFB_FLAT_BIT | FFB_TRI_CULL_BIT) +#define TAG(x) x##_flat_tricull_elt +#include "ffb_rendertmp.h" + +#define IND (FFB_ALPHA_BIT | FFB_TRI_CULL_BIT) +#define TAG(x) x##_alpha_tricull_elt +#include "ffb_rendertmp.h" + +#define IND (FFB_FLAT_BIT | FFB_ALPHA_BIT | FFB_TRI_CULL_BIT) +#define TAG(x) x##_flat_alpha_tricull_elt +#include "ffb_rendertmp.h" + +static void *render_tabs[MAX_FFB_RENDER_FUNCS]; +static void *render_tabs_elt[MAX_FFB_RENDER_FUNCS]; + +static void init_render_tab(void) +{ + int i; + + render_tabs[0] = render_tab; + render_tabs[FFB_FLAT_BIT] = render_tab_flat; + render_tabs[FFB_ALPHA_BIT] = render_tab_alpha; + render_tabs[FFB_FLAT_BIT|FFB_ALPHA_BIT] = render_tab_flat_alpha; + render_tabs[FFB_TRI_CULL_BIT] = render_tab_tricull; + render_tabs[FFB_FLAT_BIT|FFB_TRI_CULL_BIT] = render_tab_flat_tricull; + render_tabs[FFB_ALPHA_BIT|FFB_TRI_CULL_BIT] = render_tab_alpha_tricull; + render_tabs[FFB_FLAT_BIT|FFB_ALPHA_BIT|FFB_TRI_CULL_BIT] = + render_tab_flat_alpha_tricull; + + render_tabs_elt[0] = render_tab_elt; + render_tabs_elt[FFB_FLAT_BIT] = render_tab_flat_elt; + render_tabs_elt[FFB_ALPHA_BIT] = render_tab_alpha_elt; + render_tabs_elt[FFB_FLAT_BIT|FFB_ALPHA_BIT] = render_tab_flat_alpha_elt; + render_tabs_elt[FFB_TRI_CULL_BIT] = render_tab_tricull_elt; + render_tabs_elt[FFB_FLAT_BIT|FFB_TRI_CULL_BIT] = render_tab_flat_tricull_elt; + render_tabs_elt[FFB_ALPHA_BIT|FFB_TRI_CULL_BIT] = render_tab_alpha_tricull_elt; + render_tabs_elt[FFB_FLAT_BIT|FFB_ALPHA_BIT|FFB_TRI_CULL_BIT] = + render_tab_flat_alpha_tricull_elt; + + for (i = 0; i < MAX_FFB_RENDER_FUNCS; i++) { + tnl_render_func *rf = render_tabs[i]; + tnl_render_func *rfe = render_tabs_elt[i]; + + if (i & FFB_TRI_CULL_BIT) { + int from_idx = (i & ~FFB_TRI_CULL_BIT); + tnl_render_func *rf_from = render_tabs[from_idx]; + tnl_render_func *rfe_from = render_tabs_elt[from_idx]; + int j; + + for (j = GL_POINTS; j < GL_TRIANGLES; j++) { + rf[j] = rf_from[j]; + rfe[j] = rfe_from[j]; + } + } + } +} + +/**********************************************************************/ +/* Choose render functions */ +/**********************************************************************/ + +#ifdef FFB_RENDER_TRACE +static void ffbPrintRenderFlags(GLuint index, GLuint render_index) +{ + fprintf(stderr, + "ffbChooseRenderState: " + "index(%s%s%s) " + "render_index(%s%s%s)\n", + ((index & FFB_TWOSIDE_BIT) ? "twoside " : ""), + ((index & FFB_OFFSET_BIT) ? "offset " : ""), + ((index & FFB_UNFILLED_BIT) ? "unfilled " : ""), + ((render_index & FFB_FLAT_BIT) ? "flat " : ""), + ((render_index & FFB_ALPHA_BIT) ? "alpha " : ""), + ((render_index & FFB_TRI_CULL_BIT) ? "tricull " : "")); +} +#endif + +void ffbChooseRenderState(GLcontext *ctx) +{ + GLuint flags = ctx->_TriangleCaps; + TNLcontext *tnl = TNL_CONTEXT(ctx); + GLuint index = 0; + + /* Per-primitive fallbacks and the selection of fmesa->draw_* are + * handled elsewhere. + */ + if (flags & DD_TRI_LIGHT_TWOSIDE) + index |= FFB_TWOSIDE_BIT; + + if (flags & DD_TRI_OFFSET) + index |= FFB_OFFSET_BIT; + + if (flags & DD_TRI_UNFILLED) + index |= FFB_UNFILLED_BIT; + + tnl->Driver.Render.Triangle = rast_tab[index].triangle; + tnl->Driver.Render.Quad = rast_tab[index].quad; + + if (index == 0) { + GLuint render_index = 0; + + if (flags & DD_FLATSHADE) + render_index |= FFB_FLAT_BIT; + + if (ctx->Color.BlendEnabled || ctx->Color.AlphaEnabled) + render_index |= FFB_ALPHA_BIT; + + if (ctx->Polygon.CullFlag) + render_index |= FFB_TRI_CULL_BIT; + +#ifdef FFB_RENDER_TRACE + ffbPrintRenderFlags(index, render_index); +#endif + tnl->Driver.Render.PrimTabVerts = render_tabs[render_index]; + tnl->Driver.Render.PrimTabElts = render_tabs_elt[render_index]; + } else { +#ifdef FFB_RENDER_TRACE + ffbPrintRenderFlags(index, 0); +#endif + tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts; + tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts; + } + + tnl->Driver.Render.ClippedPolygon = ffbRenderClippedPolygon; + tnl->Driver.Render.ClippedLine = ffbRenderClippedLine; +} + +static void ffbRunPipeline(GLcontext *ctx) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + + if (fmesa->bad_fragment_attrs == 0 && + fmesa->new_gl_state) { + if (fmesa->new_gl_state & _FFB_NEW_TRIANGLE) + ffbChooseTriangleState(ctx); + if (fmesa->new_gl_state & _FFB_NEW_LINE) + ffbChooseLineState(ctx); + if (fmesa->new_gl_state & _FFB_NEW_POINT) + ffbChoosePointState(ctx); + if (fmesa->new_gl_state & _FFB_NEW_RENDER) + ffbChooseRenderState(ctx); + if (fmesa->new_gl_state & _FFB_NEW_VERTEX) + ffbChooseVertexState(ctx); + + fmesa->new_gl_state = 0; + } + + _tnl_run_pipeline(ctx); +} + +static void ffbRenderStart(GLcontext *ctx) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + + LOCK_HARDWARE(fmesa); + fmesa->hw_locked = 1; + + if (fmesa->state_dirty != 0) + ffbSyncHardware(fmesa); +} + +static void ffbRenderFinish(GLcontext *ctx) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + + UNLOCK_HARDWARE(fmesa); + fmesa->hw_locked = 0; +} + +/* Even when doing full software rendering we need to + * wrap render{start,finish} so that the hardware is kept + * in sync (because multipass rendering changes the write + * buffer etc.) + */ +static void ffbSWRenderStart(GLcontext *ctx) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + + LOCK_HARDWARE(fmesa); + fmesa->hw_locked = 1; + + if (fmesa->state_dirty != 0) + ffbSyncHardware(fmesa); +} + +static void ffbSWRenderFinish(GLcontext *ctx) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + + UNLOCK_HARDWARE(fmesa); + fmesa->hw_locked = 0; +} + +static void ffbRasterPrimitive(GLcontext *ctx, GLenum rprim) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + GLuint drawop, fbc, ppc; + int do_sw = 0; + + fmesa->raster_primitive = rprim; + + drawop = fmesa->drawop; + fbc = fmesa->fbc; + ppc = fmesa->ppc & ~(FFB_PPC_ZS_MASK | FFB_PPC_CS_MASK); + +#ifdef STATE_TRACE + fprintf(stderr, + "ffbReducedPrimitiveChange: rprim(%d) ", rprim); +#endif + switch(rprim) { + case GL_POINTS: +#ifdef STATE_TRACE + fprintf(stderr, "GL_POINTS "); +#endif + if (fmesa->draw_point == ffb_fallback_point) { + do_sw = 1; + break; + } + + if (ctx->Point.SmoothFlag) { + ppc |= (FFB_PPC_ZS_VAR | FFB_PPC_CS_CONST); + drawop = FFB_DRAWOP_AADOT; + } else { + ppc |= (FFB_PPC_ZS_CONST | FFB_PPC_CS_CONST); + drawop = FFB_DRAWOP_DOT; + } + break; + + case GL_LINES: +#ifdef STATE_TRACE + fprintf(stderr, "GL_LINES "); +#endif + if (fmesa->draw_line == ffb_fallback_line) { + do_sw = 1; + break; + } + + if (ctx->_TriangleCaps & DD_FLATSHADE) { + ppc |= FFB_PPC_ZS_VAR | FFB_PPC_CS_CONST; + } else { + ppc |= FFB_PPC_ZS_VAR | FFB_PPC_CS_VAR; + } + if (ctx->Line.SmoothFlag) + drawop = FFB_DRAWOP_AALINE; + else + drawop = FFB_DRAWOP_DDLINE; + break; + + case GL_TRIANGLES: +#ifdef STATE_TRACE + fprintf(stderr, "GL_POLYGON "); +#endif + if (fmesa->draw_tri == ffb_fallback_triangle) { + do_sw = 1; + break; + } + + ppc &= ~FFB_PPC_APE_MASK; + if (ctx->Polygon.StippleFlag) + ppc |= FFB_PPC_APE_ENABLE; + else + ppc |= FFB_PPC_APE_DISABLE; + + if (ctx->_TriangleCaps & DD_FLATSHADE) { + ppc |= FFB_PPC_ZS_VAR | FFB_PPC_CS_CONST; + } else { + ppc |= FFB_PPC_ZS_VAR | FFB_PPC_CS_VAR; + } + drawop = FFB_DRAWOP_TRIANGLE; + break; + + default: +#ifdef STATE_TRACE + fprintf(stderr, "unknown %d!\n", rprim); +#endif + return; + }; + +#ifdef STATE_TRACE + fprintf(stderr, "do_sw(%d) ", do_sw); +#endif + if (do_sw != 0) { + fbc &= ~(FFB_FBC_WB_C); + fbc &= ~(FFB_FBC_ZE_MASK | FFB_FBC_RGBE_MASK); + fbc |= FFB_FBC_ZE_OFF | FFB_FBC_RGBE_MASK; + ppc &= ~(FFB_PPC_XS_MASK | FFB_PPC_ABE_MASK | + FFB_PPC_DCE_MASK | FFB_PPC_APE_MASK); + ppc |= (FFB_PPC_ZS_VAR | FFB_PPC_CS_VAR | FFB_PPC_XS_WID | + FFB_PPC_ABE_DISABLE | FFB_PPC_DCE_DISABLE | + FFB_PPC_APE_DISABLE); + } else { + fbc |= FFB_FBC_WB_C; + fbc &= ~(FFB_FBC_RGBE_MASK); + fbc |= FFB_FBC_RGBE_MASK; + ppc &= ~(FFB_PPC_ABE_MASK | FFB_PPC_XS_MASK); + if (ctx->Color.BlendEnabled) { + if ((rprim == GL_POINTS && !ctx->Point.SmoothFlag) || + (rprim != GL_POINTS && ctx->_TriangleCaps & DD_FLATSHADE)) + ppc |= FFB_PPC_ABE_ENABLE | FFB_PPC_XS_CONST; + else + ppc |= FFB_PPC_ABE_ENABLE | FFB_PPC_XS_VAR; + } else { + ppc |= FFB_PPC_ABE_DISABLE | FFB_PPC_XS_WID; + } + } +#ifdef STATE_TRACE + fprintf(stderr, "fbc(%08x) ppc(%08x)\n", fbc, ppc); +#endif + + FFBFifo(fmesa, 4); + if (fmesa->drawop != drawop) + fmesa->regs->drawop = fmesa->drawop = drawop; + if (fmesa->fbc != fbc) + fmesa->regs->fbc = fmesa->fbc = fbc; + if (fmesa->ppc != ppc) + fmesa->regs->ppc = fmesa->ppc = ppc; + if (do_sw != 0) { + fmesa->regs->cmp = + (fmesa->cmp & ~(0xff<<16)) | (0x80 << 16); + } else + fmesa->regs->cmp = fmesa->cmp; +} + +static void ffbRenderPrimitive(GLcontext *ctx, GLenum prim) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + GLuint rprim = reduced_prim[prim]; + + fmesa->render_primitive = prim; + + if (rprim == GL_TRIANGLES && (ctx->_TriangleCaps & DD_TRI_UNFILLED)) + return; + + if (fmesa->raster_primitive != rprim) { + ffbRasterPrimitive( ctx, rprim ); + } +} + + + + +/**********************************************************************/ +/* Transition to/from hardware rasterization. */ +/**********************************************************************/ + +static char *fallbackStrings[] = { + "Fog enabled", + "Blend function", + "Blend ROP", + "Blend equation", + "Stencil", + "Texture", + "LIBGL_SOFTWARE_RENDERING" +}; + +static char *getFallbackString(GLuint bit) +{ + int i = 0; + + while (bit > 1) { + i++; + bit >>= 1; + } + return fallbackStrings[i]; +} + +void ffbFallback( GLcontext *ctx, GLuint bit, GLboolean mode ) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + TNLcontext *tnl = TNL_CONTEXT(ctx); + GLuint oldfallback = fmesa->bad_fragment_attrs; + + if (mode) { + fmesa->bad_fragment_attrs |= bit; + if (oldfallback == 0) { +/* FFB_FIREVERTICES(fmesa); */ + _swsetup_Wakeup( ctx ); + if (fmesa->debugFallbacks) + fprintf(stderr, "FFB begin software fallback: 0x%x %s\n", + bit, getFallbackString(bit)); + } + } else { + fmesa->bad_fragment_attrs &= ~bit; + if (oldfallback == bit) { + _swrast_flush( ctx ); + + tnl->Driver.Render.Start = ffbRenderStart; + tnl->Driver.Render.PrimitiveNotify = ffbRenderPrimitive; + tnl->Driver.Render.Finish = ffbRenderFinish; + fmesa->new_gl_state = ~0; + + /* Just re-choose everything: + */ + ffbChooseVertexState(ctx); + ffbChooseRenderState(ctx); + ffbChooseTriangleState(ctx); + ffbChooseLineState(ctx); + ffbChoosePointState(ctx); + + if (fmesa->debugFallbacks) + fprintf(stderr, "FFB end software fallback: 0x%x %s\n", + bit, getFallbackString(bit)); + } + } +} + +/**********************************************************************/ +/* Initialization. */ +/**********************************************************************/ + +void ffbDDInitRenderFuncs( GLcontext *ctx ) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + SWcontext *swrast = SWRAST_CONTEXT(ctx); + static int firsttime = 1; + + if (firsttime) { + init_rast_tab(); + init_tri_tab(); + init_render_tab(); + firsttime = 0; + } + + tnl->Driver.RunPipeline = ffbRunPipeline; + tnl->Driver.Render.Start = ffbRenderStart; + tnl->Driver.Render.Finish = ffbRenderFinish; + tnl->Driver.Render.PrimitiveNotify = ffbRenderPrimitive; + tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple; + tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts; + tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts; + + swrast->Driver.SpanRenderStart = ffbSWRenderStart; + swrast->Driver.SpanRenderFinish = ffbSWRenderFinish; +} -- cgit v1.2.3