| /* $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 <davem@redhat.com> |
| */ |
| |
| #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->attrib[FRAG_ATTRIB_WPOS][0] = sx * src->x + tx; |
| dst->attrib[FRAG_ATTRIB_WPOS][1] = sy * src->y + ty; |
| dst->attrib[FRAG_ATTRIB_WPOS][2] = sz * src->z + tz; |
| dst->attrib[FRAG_ATTRIB_WPOS][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; |
| } |