| /* |
| * Copyright 2000-2001 VA Linux Systems, Inc. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * on the rights to use, copy, modify, merge, publish, distribute, sub |
| * license, and/or sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| */ |
| /* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgatris.c,v 1.10 2002/10/30 12:51:36 alanh Exp $ */ |
| |
| #include "mtypes.h" |
| #include "macros.h" |
| #include "colormac.h" |
| #include "swrast/swrast.h" |
| #include "swrast_setup/swrast_setup.h" |
| #include "tnl/t_context.h" |
| #include "tnl/t_pipeline.h" |
| |
| #include "mm.h" |
| #include "mgacontext.h" |
| #include "mgaioctl.h" |
| #include "mgatris.h" |
| #include "mgavb.h" |
| #include "mgastate.h" |
| |
| |
| static void mgaRenderPrimitive( GLcontext *ctx, GLenum prim ); |
| |
| /*********************************************************************** |
| * Functions to draw basic primitives * |
| ***********************************************************************/ |
| |
| |
| #if defined (USE_X86_ASM) |
| #define EMIT_VERT( j, vb, vertex_size, v ) \ |
| do { int __tmp; \ |
| __asm__ __volatile__( "rep ; movsl" \ |
| : "=%c" (j), "=D" (vb), "=S" (__tmp) \ |
| : "0" (vertex_size), \ |
| "D" ((long)vb), \ |
| "S" ((long)v)); \ |
| } while (0) |
| #else |
| #define EMIT_VERT( j, vb, vertex_size, v ) \ |
| do { \ |
| for ( j = 0 ; j < vertex_size ; j++ ) \ |
| vb[j] = (v)->ui[j]; \ |
| vb += vertex_size; \ |
| } while (0) |
| #endif |
| |
| static void INLINE mga_draw_triangle( mgaContextPtr mmesa, |
| mgaVertexPtr v0, |
| mgaVertexPtr v1, |
| mgaVertexPtr v2 ) |
| { |
| GLuint vertex_size = mmesa->vertex_size; |
| GLuint *vb = mgaAllocDmaLow( mmesa, 3 * 4 * vertex_size ); |
| int j; |
| |
| EMIT_VERT( j, vb, vertex_size, v0 ); |
| EMIT_VERT( j, vb, vertex_size, v1 ); |
| EMIT_VERT( j, vb, vertex_size, v2 ); |
| } |
| |
| |
| static void INLINE mga_draw_quad( mgaContextPtr mmesa, |
| mgaVertexPtr v0, |
| mgaVertexPtr v1, |
| mgaVertexPtr v2, |
| mgaVertexPtr v3 ) |
| { |
| GLuint vertex_size = mmesa->vertex_size; |
| GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size ); |
| int j; |
| |
| EMIT_VERT( j, vb, vertex_size, v0 ); |
| EMIT_VERT( j, vb, vertex_size, v1 ); |
| EMIT_VERT( j, vb, vertex_size, v3 ); |
| EMIT_VERT( j, vb, vertex_size, v1 ); |
| EMIT_VERT( j, vb, vertex_size, v2 ); |
| EMIT_VERT( j, vb, vertex_size, v3 ); |
| } |
| |
| |
| static INLINE void mga_draw_point( mgaContextPtr mmesa, |
| mgaVertexPtr tmp ) |
| { |
| const GLfloat sz = 0.5 * CLAMP(mmesa->glCtx->Point.Size, |
| mmesa->glCtx->Const.MinPointSize, |
| mmesa->glCtx->Const.MaxPointSize); |
| const int vertex_size = mmesa->vertex_size; |
| GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size ); |
| int j; |
| |
| #if 0 |
| v0->v.x += PNT_X_OFFSET - TRI_X_OFFSET; |
| v0->v.y += PNT_Y_OFFSET - TRI_Y_OFFSET; |
| #endif |
| |
| /* Draw a point as two triangles. |
| */ |
| *(float *)&vb[0] = tmp->v.x - sz; |
| *(float *)&vb[1] = tmp->v.y - sz; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = tmp->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = tmp->v.x + sz; |
| *(float *)&vb[1] = tmp->v.y - sz; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = tmp->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = tmp->v.x + sz; |
| *(float *)&vb[1] = tmp->v.y + sz; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = tmp->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = tmp->v.x + sz; |
| *(float *)&vb[1] = tmp->v.y + sz; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = tmp->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = tmp->v.x - sz; |
| *(float *)&vb[1] = tmp->v.y + sz; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = tmp->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = tmp->v.x - sz; |
| *(float *)&vb[1] = tmp->v.y - sz; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = tmp->ui[j]; |
| |
| #if 0 |
| v0->v.x -= PNT_X_OFFSET - TRI_X_OFFSET; |
| v0->v.y -= PNT_Y_OFFSET - TRI_Y_OFFSET; |
| #endif |
| } |
| |
| |
| static INLINE void mga_draw_line( mgaContextPtr mmesa, |
| mgaVertexPtr v0, |
| mgaVertexPtr v1 ) |
| { |
| GLuint vertex_size = mmesa->vertex_size; |
| GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size ); |
| GLfloat dx, dy, ix, iy; |
| const GLfloat width = CLAMP(mmesa->glCtx->Line.Width, |
| mmesa->glCtx->Const.MinLineWidth, |
| mmesa->glCtx->Const.MaxLineWidth); |
| GLint j; |
| |
| #if 0 |
| v0->v.x += LINE_X_OFFSET - TRI_X_OFFSET; |
| v0->v.y += LINE_Y_OFFSET - TRI_Y_OFFSET; |
| v1->v.x += LINE_X_OFFSET - TRI_X_OFFSET; |
| v1->v.y += LINE_Y_OFFSET - TRI_Y_OFFSET; |
| #endif |
| |
| dx = v0->v.x - v1->v.x; |
| dy = v0->v.y - v1->v.y; |
| |
| ix = width * .5; iy = 0; |
| if (dx * dx > dy * dy) { |
| iy = ix; ix = 0; |
| } |
| |
| *(float *)&vb[0] = v0->v.x - ix; |
| *(float *)&vb[1] = v0->v.y - iy; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = v0->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = v1->v.x + ix; |
| *(float *)&vb[1] = v1->v.y + iy; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = v1->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = v0->v.x + ix; |
| *(float *)&vb[1] = v0->v.y + iy; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = v0->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = v0->v.x - ix; |
| *(float *)&vb[1] = v0->v.y - iy; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = v0->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = v1->v.x - ix; |
| *(float *)&vb[1] = v1->v.y - iy; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = v1->ui[j]; |
| vb += vertex_size; |
| |
| *(float *)&vb[0] = v1->v.x + ix; |
| *(float *)&vb[1] = v1->v.y + iy; |
| for (j = 2 ; j < vertex_size ; j++) |
| vb[j] = v1->ui[j]; |
| vb += vertex_size; |
| |
| #if 0 |
| v0->v.x -= LINE_X_OFFSET - TRI_X_OFFSET; |
| v0->v.y -= LINE_Y_OFFSET - TRI_Y_OFFSET; |
| v1->v.x -= LINE_X_OFFSET - TRI_X_OFFSET; |
| v1->v.y -= LINE_Y_OFFSET - TRI_Y_OFFSET; |
| #endif |
| } |
| |
| /*********************************************************************** |
| * Macros for t_dd_tritmp.h to draw basic primitives * |
| ***********************************************************************/ |
| |
| #define TRI( a, b, c ) \ |
| do { \ |
| if (DO_FALLBACK) \ |
| mmesa->draw_tri( mmesa, a, b, c ); \ |
| else \ |
| mga_draw_triangle( mmesa, a, b, c ); \ |
| } while (0) |
| |
| #define QUAD( a, b, c, d ) \ |
| do { \ |
| if (DO_FALLBACK) { \ |
| mmesa->draw_tri( mmesa, a, b, d ); \ |
| mmesa->draw_tri( mmesa, b, c, d ); \ |
| } else { \ |
| mga_draw_quad( mmesa, a, b, c, d ); \ |
| } \ |
| } while (0) |
| |
| #define LINE( v0, v1 ) \ |
| do { \ |
| if (DO_FALLBACK) \ |
| mmesa->draw_line( mmesa, v0, v1 ); \ |
| else { \ |
| mga_draw_line( mmesa, v0, v1 ); \ |
| } \ |
| } while (0) |
| |
| #define POINT( v0 ) \ |
| do { \ |
| if (DO_FALLBACK) \ |
| mmesa->draw_point( mmesa, v0 ); \ |
| else { \ |
| mga_draw_point( mmesa, v0 ); \ |
| } \ |
| } while (0) |
| |
| |
| /*********************************************************************** |
| * Fallback to swrast for basic primitives * |
| ***********************************************************************/ |
| |
| /* This code is hit only when a mix of accelerated and unaccelerated |
| * primitives are being drawn, and only for the unaccelerated |
| * primitives. |
| */ |
| |
| static void |
| mga_fallback_tri( mgaContextPtr mmesa, |
| mgaVertex *v0, |
| mgaVertex *v1, |
| mgaVertex *v2 ) |
| { |
| GLcontext *ctx = mmesa->glCtx; |
| SWvertex v[3]; |
| mga_translate_vertex( ctx, v0, &v[0] ); |
| mga_translate_vertex( ctx, v1, &v[1] ); |
| mga_translate_vertex( ctx, v2, &v[2] ); |
| _swrast_Triangle( ctx, &v[0], &v[1], &v[2] ); |
| } |
| |
| |
| static void |
| mga_fallback_line( mgaContextPtr mmesa, |
| mgaVertex *v0, |
| mgaVertex *v1 ) |
| { |
| GLcontext *ctx = mmesa->glCtx; |
| SWvertex v[2]; |
| mga_translate_vertex( ctx, v0, &v[0] ); |
| mga_translate_vertex( ctx, v1, &v[1] ); |
| _swrast_Line( ctx, &v[0], &v[1] ); |
| } |
| |
| |
| static void |
| mga_fallback_point( mgaContextPtr mmesa, |
| mgaVertex *v0 ) |
| { |
| GLcontext *ctx = mmesa->glCtx; |
| SWvertex v[1]; |
| mga_translate_vertex( ctx, v0, &v[0] ); |
| _swrast_Point( ctx, &v[0] ); |
| } |
| |
| /*********************************************************************** |
| * Build render functions from dd templates * |
| ***********************************************************************/ |
| |
| |
| #define MGA_UNFILLED_BIT 0x1 |
| #define MGA_OFFSET_BIT 0x2 |
| #define MGA_TWOSIDE_BIT 0x4 |
| #define MGA_FLAT_BIT 0x8 /* mga can't flatshade? */ |
| #define MGA_FALLBACK_BIT 0x10 |
| #define MGA_MAX_TRIFUNC 0x20 |
| |
| static struct { |
| tnl_points_func points; |
| tnl_line_func line; |
| tnl_triangle_func triangle; |
| tnl_quad_func quad; |
| } rast_tab[MGA_MAX_TRIFUNC]; |
| |
| #define DO_FALLBACK (IND & MGA_FALLBACK_BIT) |
| #define DO_OFFSET (IND & MGA_OFFSET_BIT) |
| #define DO_UNFILLED (IND & MGA_UNFILLED_BIT) |
| #define DO_TWOSIDE (IND & MGA_TWOSIDE_BIT) |
| #define DO_FLAT (IND & MGA_FLAT_BIT) |
| #define DO_TRI 1 |
| #define DO_QUAD 1 |
| #define DO_LINE 1 |
| #define DO_POINTS 1 |
| #define DO_FULL_QUAD 1 |
| |
| #define HAVE_RGBA 1 |
| #define HAVE_BACK_COLORS 0 |
| #define HAVE_SPEC 1 |
| #define HAVE_HW_FLATSHADE 0 |
| #define VERTEX mgaVertex |
| #define TAB rast_tab |
| |
| |
| #define DEPTH_SCALE mmesa->depth_scale |
| #define UNFILLED_TRI unfilled_tri |
| #define UNFILLED_QUAD unfilled_quad |
| #define VERT_X(_v) _v->v.x |
| #define VERT_Y(_v) _v->v.y |
| #define VERT_Z(_v) _v->v.z |
| #define AREA_IS_CCW( a ) (a > 0) |
| #define GET_VERTEX(e) (mmesa->verts + (e * mmesa->vertex_size * sizeof(int))) |
| |
| #define VERT_SET_RGBA( v, c ) \ |
| do { \ |
| mga_color_t *color = (mga_color_t *)&((v)->ui[4]); \ |
| UNCLAMPED_FLOAT_TO_UBYTE(color->red, (c)[0]); \ |
| UNCLAMPED_FLOAT_TO_UBYTE(color->green, (c)[1]); \ |
| UNCLAMPED_FLOAT_TO_UBYTE(color->blue, (c)[2]); \ |
| UNCLAMPED_FLOAT_TO_UBYTE(color->alpha, (c)[3]); \ |
| } while (0) |
| |
| #define VERT_COPY_RGBA( v0, v1 ) v0->ui[4] = v1->ui[4] |
| |
| #define VERT_SET_SPEC( v0, c ) \ |
| do { \ |
| UNCLAMPED_FLOAT_TO_UBYTE(v0->v.specular.red, (c)[0]); \ |
| UNCLAMPED_FLOAT_TO_UBYTE(v0->v.specular.green, (c)[1]); \ |
| UNCLAMPED_FLOAT_TO_UBYTE(v0->v.specular.blue, (c)[2]); \ |
| } while (0) |
| |
| #define VERT_COPY_SPEC( v0, v1 ) \ |
| do { \ |
| v0->v.specular.red = v1->v.specular.red; \ |
| v0->v.specular.green = v1->v.specular.green; \ |
| v0->v.specular.blue = v1->v.specular.blue; \ |
| } while (0) |
| |
| #define VERT_SAVE_RGBA( idx ) color[idx] = v[idx]->ui[4] |
| #define VERT_RESTORE_RGBA( idx ) v[idx]->ui[4] = color[idx] |
| #define VERT_SAVE_SPEC( idx ) spec[idx] = v[idx]->ui[5] |
| #define VERT_RESTORE_SPEC( idx ) v[idx]->ui[5] = spec[idx] |
| |
| #define LOCAL_VARS(n) \ |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ |
| GLuint color[n], spec[n]; \ |
| (void) color; (void) spec; |
| |
| |
| |
| /*********************************************************************** |
| * Functions to draw basic unfilled primitives * |
| ***********************************************************************/ |
| |
| #define RASTERIZE(x) if (mmesa->raster_primitive != x) \ |
| mgaRasterPrimitive( ctx, x, MGA_WA_TRIANGLES ) |
| #define RENDER_PRIMITIVE mmesa->render_primitive |
| #define IND MGA_FALLBACK_BIT |
| #define TAG(x) x |
| #include "tnl_dd/t_dd_unfilled.h" |
| #undef IND |
| |
| /*********************************************************************** |
| * Functions to draw GL primitives * |
| ***********************************************************************/ |
| |
| #define IND (0) |
| #define TAG(x) x |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_OFFSET_BIT) |
| #define TAG(x) x##_offset |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT) |
| #define TAG(x) x##_twoside |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT) |
| #define TAG(x) x##_twoside_offset |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_UNFILLED_BIT) |
| #define TAG(x) x##_unfilled |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_OFFSET_BIT|MGA_UNFILLED_BIT) |
| #define TAG(x) x##_offset_unfilled |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_UNFILLED_BIT) |
| #define TAG(x) x##_twoside_unfilled |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_UNFILLED_BIT) |
| #define TAG(x) x##_twoside_offset_unfilled |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_FALLBACK_BIT) |
| #define TAG(x) x##_fallback |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_OFFSET_BIT|MGA_FALLBACK_BIT) |
| #define TAG(x) x##_offset_fallback |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_FALLBACK_BIT) |
| #define TAG(x) x##_twoside_fallback |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_FALLBACK_BIT) |
| #define TAG(x) x##_twoside_offset_fallback |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_UNFILLED_BIT|MGA_FALLBACK_BIT) |
| #define TAG(x) x##_unfilled_fallback |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_OFFSET_BIT|MGA_UNFILLED_BIT|MGA_FALLBACK_BIT) |
| #define TAG(x) x##_offset_unfilled_fallback |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_UNFILLED_BIT|MGA_FALLBACK_BIT) |
| #define TAG(x) x##_twoside_unfilled_fallback |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_UNFILLED_BIT| \ |
| MGA_FALLBACK_BIT) |
| #define TAG(x) x##_twoside_offset_unfilled_fallback |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| |
| /* Mga doesn't support provoking-vertex flat-shading? |
| */ |
| #define IND (MGA_FLAT_BIT) |
| #define TAG(x) x##_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_OFFSET_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_offset_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_twoside_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_twoside_offset_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_UNFILLED_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_unfilled_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_OFFSET_BIT|MGA_UNFILLED_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_offset_unfilled_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_UNFILLED_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_twoside_unfilled_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_UNFILLED_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_twoside_offset_unfilled_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_FALLBACK_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_fallback_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_OFFSET_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_offset_fallback_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_twoside_fallback_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_twoside_offset_fallback_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_UNFILLED_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_unfilled_fallback_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_OFFSET_BIT|MGA_UNFILLED_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_offset_unfilled_fallback_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_UNFILLED_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_twoside_unfilled_fallback_flat |
| #include "tnl_dd/t_dd_tritmp.h" |
| |
| #define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_UNFILLED_BIT| \ |
| MGA_FALLBACK_BIT|MGA_FLAT_BIT) |
| #define TAG(x) x##_twoside_offset_unfilled_fallback_flat |
| #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(); |
| init_fallback(); |
| init_offset_fallback(); |
| init_twoside_fallback(); |
| init_twoside_offset_fallback(); |
| init_unfilled_fallback(); |
| init_offset_unfilled_fallback(); |
| init_twoside_unfilled_fallback(); |
| init_twoside_offset_unfilled_fallback(); |
| |
| init_flat(); |
| init_offset_flat(); |
| init_twoside_flat(); |
| init_twoside_offset_flat(); |
| init_unfilled_flat(); |
| init_offset_unfilled_flat(); |
| init_twoside_unfilled_flat(); |
| init_twoside_offset_unfilled_flat(); |
| init_fallback_flat(); |
| init_offset_fallback_flat(); |
| init_twoside_fallback_flat(); |
| init_twoside_offset_fallback_flat(); |
| init_unfilled_fallback_flat(); |
| init_offset_unfilled_fallback_flat(); |
| init_twoside_unfilled_fallback_flat(); |
| init_twoside_offset_unfilled_fallback_flat(); |
| } |
| |
| /**********************************************************************/ |
| /* Render whole begin/end objects */ |
| /**********************************************************************/ |
| |
| |
| #define VERT(x) (mgaVertex *)(vertptr + ((x)*vertex_size*sizeof(int))) |
| #define RENDER_POINTS( start, count ) \ |
| for ( ; start < count ; start++) \ |
| mga_draw_point( mmesa, VERT(ELT(start)) ); |
| #define RENDER_LINE( v0, v1 ) \ |
| mga_draw_line( mmesa, VERT(v0), VERT(v1) ) |
| #define RENDER_TRI( v0, v1, v2 ) \ |
| mga_draw_triangle( mmesa, VERT(v0), VERT(v1), VERT(v2) ) |
| #define RENDER_QUAD( v0, v1, v2, v3 ) \ |
| mga_draw_quad( mmesa, VERT(v0), VERT(v1), VERT(v2), VERT(v3) ) |
| #define INIT(x) mgaRenderPrimitive( ctx, x ) |
| #undef LOCAL_VARS |
| #define LOCAL_VARS \ |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ |
| GLubyte *vertptr = (GLubyte *)mmesa->verts; \ |
| const GLuint vertex_size = mmesa->vertex_size; \ |
| const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts; \ |
| (void) elt; |
| #define RESET_STIPPLE |
| #define RESET_OCCLUSION |
| #define PRESERVE_VB_DEFS |
| #define ELT(x) x |
| #define TAG(x) mga_##x##_verts |
| #include "tnl/t_vb_rendertmp.h" |
| #undef ELT |
| #undef TAG |
| #define TAG(x) mga_##x##_elts |
| #define ELT(x) elt[x] |
| #include "tnl/t_vb_rendertmp.h" |
| |
| |
| /**********************************************************************/ |
| /* Render clipped primitives */ |
| /**********************************************************************/ |
| |
| |
| |
| static void mgaRenderClippedPoly( GLcontext *ctx, const GLuint *elts, GLuint n ) |
| { |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| struct vertex_buffer *VB = &tnl->vb; |
| GLuint prim = mmesa->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 mgaRenderClippedLine( GLcontext *ctx, GLuint ii, GLuint jj ) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| tnl->Driver.Render.Line( ctx, ii, jj ); |
| } |
| |
| static void mgaFastRenderClippedPoly( GLcontext *ctx, const GLuint *elts, |
| GLuint n ) |
| { |
| mgaContextPtr mmesa = MGA_CONTEXT( ctx ); |
| GLuint vertex_size = mmesa->vertex_size; |
| GLuint *vb = mgaAllocDmaLow( mmesa, (n-2) * 3 * 4 * vertex_size ); |
| GLubyte *vertptr = (GLubyte *)mmesa->verts; |
| const GLuint *start = (const GLuint *)VERT(elts[0]); |
| int i,j; |
| |
| for (i = 2 ; i < n ; i++) { |
| EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) VERT(elts[i-1]) ); |
| EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) VERT(elts[i]) ); |
| EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) start ); |
| } |
| } |
| |
| /**********************************************************************/ |
| /* Choose render functions */ |
| /**********************************************************************/ |
| |
| |
| #define POINT_FALLBACK (DD_POINT_SMOOTH) |
| #define LINE_FALLBACK (DD_LINE_SMOOTH | DD_LINE_STIPPLE) |
| #define TRI_FALLBACK (DD_TRI_SMOOTH | DD_TRI_UNFILLED) |
| #define ANY_FALLBACK_FLAGS (POINT_FALLBACK|LINE_FALLBACK|TRI_FALLBACK) |
| #define ANY_RASTER_FLAGS (DD_FLATSHADE|DD_TRI_LIGHT_TWOSIDE|DD_TRI_OFFSET| \ |
| DD_TRI_UNFILLED) |
| |
| void mgaChooseRenderState(GLcontext *ctx) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| GLuint flags = ctx->_TriangleCaps; |
| GLuint index = 0; |
| |
| if (flags & (ANY_FALLBACK_FLAGS|ANY_RASTER_FLAGS|DD_TRI_STIPPLE)) { |
| if (flags & ANY_RASTER_FLAGS) { |
| if (flags & DD_TRI_LIGHT_TWOSIDE) index |= MGA_TWOSIDE_BIT; |
| if (flags & DD_TRI_OFFSET) index |= MGA_OFFSET_BIT; |
| if (flags & DD_TRI_UNFILLED) index |= MGA_UNFILLED_BIT; |
| if (flags & DD_FLATSHADE) index |= MGA_FLAT_BIT; |
| } |
| |
| mmesa->draw_point = mga_draw_point; |
| mmesa->draw_line = mga_draw_line; |
| mmesa->draw_tri = mga_draw_triangle; |
| |
| /* Hook in fallbacks for specific primitives. |
| */ |
| if (flags & ANY_FALLBACK_FLAGS) |
| { |
| if (flags & POINT_FALLBACK) |
| mmesa->draw_point = mga_fallback_point; |
| |
| if (flags & LINE_FALLBACK) |
| mmesa->draw_line = mga_fallback_line; |
| |
| if (flags & TRI_FALLBACK) |
| mmesa->draw_tri = mga_fallback_tri; |
| |
| index |= MGA_FALLBACK_BIT; |
| } |
| |
| if ((flags & DD_TRI_STIPPLE) && !mmesa->haveHwStipple) { |
| mmesa->draw_tri = mga_fallback_tri; |
| index |= MGA_FALLBACK_BIT; |
| } |
| } |
| |
| if (mmesa->RenderIndex != index) { |
| mmesa->RenderIndex = index; |
| |
| tnl->Driver.Render.Points = rast_tab[index].points; |
| tnl->Driver.Render.Line = rast_tab[index].line; |
| tnl->Driver.Render.Triangle = rast_tab[index].triangle; |
| tnl->Driver.Render.Quad = rast_tab[index].quad; |
| |
| if (index == 0) { |
| tnl->Driver.Render.PrimTabVerts = mga_render_tab_verts; |
| tnl->Driver.Render.PrimTabElts = mga_render_tab_elts; |
| tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */ |
| tnl->Driver.Render.ClippedPolygon = mgaFastRenderClippedPoly; |
| } else { |
| tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts; |
| tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts; |
| tnl->Driver.Render.ClippedLine = mgaRenderClippedLine; |
| tnl->Driver.Render.ClippedPolygon = mgaRenderClippedPoly; |
| } |
| } |
| } |
| |
| /**********************************************************************/ |
| /* Runtime render state and callbacks */ |
| /**********************************************************************/ |
| |
| |
| static 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 |
| }; |
| |
| |
| |
| /* Always called between RenderStart and RenderFinish --> We already |
| * hold the lock. |
| */ |
| void mgaRasterPrimitive( GLcontext *ctx, GLenum prim, GLuint hwprim ) |
| { |
| mgaContextPtr mmesa = MGA_CONTEXT( ctx ); |
| |
| FLUSH_BATCH( mmesa ); |
| |
| /* Update culling */ |
| if (mmesa->raster_primitive != prim) |
| mmesa->dirty |= MGA_UPLOAD_CONTEXT; |
| |
| mmesa->raster_primitive = prim; |
| /* mmesa->hw_primitive = hwprim; */ |
| mmesa->hw_primitive = MGA_WA_TRIANGLES; /* disable mgarender.c for now */ |
| |
| if (ctx->Polygon.StippleFlag && mmesa->haveHwStipple) |
| { |
| mmesa->dirty |= MGA_UPLOAD_CONTEXT; |
| mmesa->setup.dwgctl &= ~(0xf<<20); |
| if (mmesa->raster_primitive == GL_TRIANGLES) |
| mmesa->setup.dwgctl |= mmesa->poly_stipple; |
| } |
| } |
| |
| |
| |
| /* Determine the rasterized primitive when not drawing unfilled |
| * polygons. |
| * |
| * Used only for the default render stage which always decomposes |
| * primitives to trianges/lines/points. For the accelerated stage, |
| * which renders strips as strips, the equivalent calculations are |
| * performed in mgarender.c. |
| */ |
| static void mgaRenderPrimitive( GLcontext *ctx, GLenum prim ) |
| { |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| GLuint rprim = reduced_prim[prim]; |
| |
| mmesa->render_primitive = prim; |
| |
| if (rprim == GL_TRIANGLES && (ctx->_TriangleCaps & DD_TRI_UNFILLED)) |
| return; |
| |
| if (mmesa->raster_primitive != rprim) { |
| mgaRasterPrimitive( ctx, rprim, MGA_WA_TRIANGLES ); |
| } |
| } |
| |
| static void mgaRenderFinish( GLcontext *ctx ) |
| { |
| if (MGA_CONTEXT(ctx)->RenderIndex & MGA_FALLBACK_BIT) |
| _swrast_flush( ctx ); |
| } |
| |
| |
| |
| /**********************************************************************/ |
| /* Manage total rasterization fallbacks */ |
| /**********************************************************************/ |
| |
| static const char * const fallbackStrings[] = { |
| "Texture mode", |
| "glDrawBuffer(GL_FRONT_AND_BACK)", |
| "read buffer", |
| "glBlendFunc(GL_SRC_ALPHA_SATURATE, GL_ZERO)", |
| "glRenderMode(selection or feedback)", |
| "No hardware stencil", |
| "glDepthFunc( GL_NEVER )", |
| "Mixing GL_CLAMP_TO_EDGE and GL_CLAMP", |
| "rasterization fallback option" |
| }; |
| |
| static const char *getFallbackString(GLuint bit) |
| { |
| int i = 0; |
| while (bit > 1) { |
| i++; |
| bit >>= 1; |
| } |
| return fallbackStrings[i]; |
| } |
| |
| |
| void mgaFallback( GLcontext *ctx, GLuint bit, GLboolean mode ) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| GLuint oldfallback = mmesa->Fallback; |
| |
| if (mode) { |
| mmesa->Fallback |= bit; |
| if (oldfallback == 0) { |
| FLUSH_BATCH(mmesa); |
| _swsetup_Wakeup( ctx ); |
| mmesa->RenderIndex = ~0; |
| if (MGA_DEBUG & DEBUG_VERBOSE_FALLBACK) { |
| fprintf(stderr, "MGA begin rasterization fallback: 0x%x %s\n", |
| bit, getFallbackString(bit)); |
| } |
| } |
| } |
| else { |
| mmesa->Fallback &= ~bit; |
| if (oldfallback == bit) { |
| _swrast_flush( ctx ); |
| tnl->Driver.Render.Start = mgaCheckTexSizes; |
| tnl->Driver.Render.PrimitiveNotify = mgaRenderPrimitive; |
| tnl->Driver.Render.Finish = mgaRenderFinish; |
| tnl->Driver.Render.BuildVertices = mgaBuildVertices; |
| mmesa->NewGLState |= (_MGA_NEW_RENDERSTATE | |
| _MGA_NEW_RASTERSETUP); |
| if (MGA_DEBUG & DEBUG_VERBOSE_FALLBACK) { |
| fprintf(stderr, "MGA end rasterization fallback: 0x%x %s\n", |
| bit, getFallbackString(bit)); |
| } |
| } |
| } |
| } |
| |
| |
| void mgaDDInitTriFuncs( GLcontext *ctx ) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| static int firsttime = 1; |
| if (firsttime) { |
| init_rast_tab(); |
| firsttime = 0; |
| } |
| |
| mmesa->RenderIndex = ~0; |
| |
| tnl->Driver.Render.Start = mgaCheckTexSizes; |
| tnl->Driver.Render.Finish = mgaRenderFinish; |
| tnl->Driver.Render.PrimitiveNotify = mgaRenderPrimitive; |
| tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple; |
| tnl->Driver.Render.BuildVertices = mgaBuildVertices; |
| tnl->Driver.Render.Multipass = NULL; |
| } |
