/* $XFree86$ */ /* -*- c-basic-offset: 3 -*- */ /************************************************************************** Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and VA Linux Systems Inc., Fremont, California. 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 ATI, VA LINUX SYSTEMS AND/OR THEIR 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 * Felix Kuehling * */ #include #include #include "glheader.h" #include "mtypes.h" #include "colormac.h" #include "macros.h" #include "swrast/swrast.h" #include "swrast_setup/swrast_setup.h" #include "tnl/tnl.h" #include "tnl/t_context.h" #include "tnl/t_pipeline.h" #include "savagetris.h" #include "savagestate.h" #include "savagetex.h" #include "savageioctl.h" #include "savage_bci.h" static void savageRasterPrimitive( GLcontext *ctx, GLuint prim ); static void savageRenderPrimitive( GLcontext *ctx, GLenum prim ); 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 }; /*********************************************************************** * Emit primitives * ***********************************************************************/ #if defined (USE_X86_ASM) #define EMIT_VERT( j, vb, vertex_size, start, v ) \ do { int __tmp; \ vb += start; \ __asm__ __volatile__( "rep ; movsl" \ : "=%c" (j), "=D" (vb), "=S" (__tmp) \ : "0" (vertex_size-start), \ "D" ((long)vb), \ "S" ((long)&v->ui[start])); \ } while (0) #else #define EMIT_VERT( j, vb, vertex_size, start, v ) \ do { \ for ( j = start ; j < vertex_size ; j++ ) \ vb[j] = (v)->ui[j]; \ vb += vertex_size; \ } while (0) #endif static void __inline__ savage_draw_triangle (savageContextPtr imesa, savageVertexPtr v0, savageVertexPtr v1, savageVertexPtr v2) { GLuint vertsize = imesa->vertex_size; u_int32_t *vb = savageAllocDmaLow (imesa, 3*4*vertsize); GLuint j; EMIT_VERT (j, vb, vertsize, 0, v0); EMIT_VERT (j, vb, vertsize, 0, v1); EMIT_VERT (j, vb, vertsize, 0, v2); } static void __inline__ savage_draw_quad (savageContextPtr imesa, savageVertexPtr v0, savageVertexPtr v1, savageVertexPtr v2, savageVertexPtr v3) { GLuint vertsize = imesa->vertex_size; u_int32_t *vb = savageAllocDmaLow (imesa, 6*4*vertsize); GLuint j; EMIT_VERT (j, vb, vertsize, 0, v0); EMIT_VERT (j, vb, vertsize, 0, v1); EMIT_VERT (j, vb, vertsize, 0, v3); EMIT_VERT (j, vb, vertsize, 0, v1); EMIT_VERT (j, vb, vertsize, 0, v2); EMIT_VERT (j, vb, vertsize, 0, v3); } static __inline__ void savage_draw_point (savageContextPtr imesa, savageVertexPtr tmp) { GLuint vertsize = imesa->vertex_size; u_int32_t *vb = savageAllocDmaLow (imesa, 6*4*vertsize); const GLfloat x = tmp->v.x; const GLfloat y = tmp->v.y; const GLfloat sz = imesa->glCtx->Point._Size * .5; GLuint j; *(float *)&vb[0] = x - sz; *(float *)&vb[1] = y - sz; EMIT_VERT (j, vb, vertsize, 2, tmp); *(float *)&vb[0] = x + sz; *(float *)&vb[1] = y - sz; EMIT_VERT (j, vb, vertsize, 2, tmp); *(float *)&vb[0] = x + sz; *(float *)&vb[1] = y + sz; EMIT_VERT (j, vb, vertsize, 2, tmp); *(float *)&vb[0] = x + sz; *(float *)&vb[1] = y + sz; EMIT_VERT (j, vb, vertsize, 2, tmp); *(float *)&vb[0] = x - sz; *(float *)&vb[1] = y + sz; EMIT_VERT (j, vb, vertsize, 2, tmp); *(float *)&vb[0] = x - sz; *(float *)&vb[1] = y - sz; EMIT_VERT (j, vb, vertsize, 2, tmp); } static __inline__ void savage_draw_line (savageContextPtr imesa, savageVertexPtr v0, savageVertexPtr v1 ) { GLuint vertsize = imesa->vertex_size; u_int32_t *vb = savageAllocDmaLow (imesa, 6*4*vertsize); GLfloat width = imesa->glCtx->Line._Width; GLfloat dx, dy, ix, iy; GLuint j; 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; EMIT_VERT (j, vb, vertsize, 2, v0); *(float *)&vb[0] = v1->v.x + ix; *(float *)&vb[1] = v1->v.y + iy; EMIT_VERT (j, vb, vertsize, 2, v1); *(float *)&vb[0] = v0->v.x + ix; *(float *)&vb[1] = v0->v.y + iy; EMIT_VERT (j, vb, vertsize, 2, v0); *(float *)&vb[0] = v0->v.x - ix; *(float *)&vb[1] = v0->v.y - iy; EMIT_VERT (j, vb, vertsize, 2, v0); *(float *)&vb[0] = v1->v.x - ix; *(float *)&vb[1] = v1->v.y - iy; EMIT_VERT (j, vb, vertsize, 2, v1); *(float *)&vb[0] = v1->v.x + ix; *(float *)&vb[1] = v1->v.y + iy; EMIT_VERT (j, vb, vertsize, 2, v1); } /*********************************************************************** * Macros for t_dd_tritmp.h to draw basic primitives * ***********************************************************************/ #define TRI( a, b, c ) \ do { \ if (DO_FALLBACK) \ imesa->draw_tri( imesa, a, b, c ); \ else \ savage_draw_triangle( imesa, a, b, c ); \ } while (0) #define QUAD( a, b, c, d ) \ do { \ if (DO_FALLBACK) { \ imesa->draw_tri( imesa, a, b, d ); \ imesa->draw_tri( imesa, b, c, d ); \ } else \ savage_draw_quad( imesa, a, b, c, d ); \ } while (0) #define LINE( v0, v1 ) \ do { \ if (DO_FALLBACK) \ imesa->draw_line( imesa, v0, v1 ); \ else \ savage_draw_line( imesa, v0, v1 ); \ } while (0) #define POINT( v0 ) \ do { \ if (DO_FALLBACK) \ imesa->draw_point( imesa, v0 ); \ else \ savage_draw_point( imesa, v0 ); \ } while (0) /*********************************************************************** * Build render functions from dd templates * ***********************************************************************/ #define SAVAGE_OFFSET_BIT 0x1 #define SAVAGE_TWOSIDE_BIT 0x2 #define SAVAGE_UNFILLED_BIT 0x4 #define SAVAGE_FALLBACK_BIT 0x8 #define SAVAGE_MAX_TRIFUNC 0x10 static struct { tnl_points_func points; tnl_line_func line; tnl_triangle_func triangle; tnl_quad_func quad; } rast_tab[SAVAGE_MAX_TRIFUNC]; #define DO_FALLBACK (IND & SAVAGE_FALLBACK_BIT) #define DO_OFFSET (IND & SAVAGE_OFFSET_BIT) #define DO_UNFILLED (IND & SAVAGE_UNFILLED_BIT) #define DO_TWOSIDE (IND & SAVAGE_TWOSIDE_BIT) #define DO_FLAT 0 #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_SPEC 1 #define HAVE_BACK_COLORS 0 #define HAVE_HW_FLATSHADE 1 #define VERTEX savageVertex #define TAB rast_tab #define DEPTH_SCALE imesa->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) (imesa->verts + (e * imesa->vertex_size * sizeof(int))) #define VERT_SET_RGBA( v, c ) \ do { \ savage_color_t *color = (savage_color_t *)&((v)->ub4[coloroffset]); \ 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[coloroffset] = v1->ui[coloroffset] #define VERT_SAVE_RGBA( idx ) color[idx] = v[idx]->ui[coloroffset] #define VERT_RESTORE_RGBA( idx ) v[idx]->ui[coloroffset] = color[idx] #define VERT_SET_SPEC( v, c ) \ do { \ if (specoffset) { \ savage_color_t *spec = (savage_color_t *)&((v)->ub4[specoffset]); \ UNCLAMPED_FLOAT_TO_UBYTE(spec->red, (c)[0]); \ UNCLAMPED_FLOAT_TO_UBYTE(spec->green, (c)[1]); \ UNCLAMPED_FLOAT_TO_UBYTE(spec->blue, (c)[2]); \ } \ } while (0) #define VERT_COPY_SPEC( v0, v1 ) \ if (specoffset) COPY_3V(v0->ub4[specoffset], v1->ub4[specoffset]) #define VERT_SAVE_SPEC( idx ) \ if (specoffset) spec[idx] = v[idx]->ui[specoffset] #define VERT_RESTORE_SPEC( idx ) \ if (specoffset) v[idx]->ui[specoffset] = spec[idx] #define LOCAL_VARS(n) \ savageContextPtr imesa = SAVAGE_CONTEXT(ctx); \ GLuint color[n], spec[n]; \ GLuint coloroffset = \ ((imesa->DrawPrimitiveCmd & SAVAGE_HW_NO_W) ? 3 : 4); \ GLboolean specoffset = \ ((imesa->DrawPrimitiveCmd & SAVAGE_HW_NO_CS) ? 0 : coloroffset+1);\ (void) color; (void) spec; (void) coloroffset; (void) specoffset; /*********************************************************************** * Helpers for rendering unfilled primitives * ***********************************************************************/ #define RASTERIZE(x) if (imesa->raster_primitive != reduced_prim[x]) \ savageRasterPrimitive( ctx, x ) #define RENDER_PRIMITIVE imesa->render_primitive #define IND SAVAGE_FALLBACK_BIT #define TAG(x) x #include "tnl_dd/t_dd_unfilled.h" #undef IND /*********************************************************************** * Generate GL render functions * ***********************************************************************/ #define IND (0) #define TAG(x) x #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_OFFSET_BIT) #define TAG(x) x##_offset #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_TWOSIDE_BIT) #define TAG(x) x##_twoside #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_TWOSIDE_BIT|SAVAGE_OFFSET_BIT) #define TAG(x) x##_twoside_offset #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_UNFILLED_BIT) #define TAG(x) x##_unfilled #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_OFFSET_BIT|SAVAGE_UNFILLED_BIT) #define TAG(x) x##_offset_unfilled #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_TWOSIDE_BIT|SAVAGE_UNFILLED_BIT) #define TAG(x) x##_twoside_unfilled #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_TWOSIDE_BIT|SAVAGE_OFFSET_BIT|SAVAGE_UNFILLED_BIT) #define TAG(x) x##_twoside_offset_unfilled #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_FALLBACK_BIT) #define TAG(x) x##_fallback #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_OFFSET_BIT|SAVAGE_FALLBACK_BIT) #define TAG(x) x##_offset_fallback #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_TWOSIDE_BIT|SAVAGE_FALLBACK_BIT) #define TAG(x) x##_twoside_fallback #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_TWOSIDE_BIT|SAVAGE_OFFSET_BIT|SAVAGE_FALLBACK_BIT) #define TAG(x) x##_twoside_offset_fallback #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_UNFILLED_BIT|SAVAGE_FALLBACK_BIT) #define TAG(x) x##_unfilled_fallback #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_OFFSET_BIT|SAVAGE_UNFILLED_BIT|SAVAGE_FALLBACK_BIT) #define TAG(x) x##_offset_unfilled_fallback #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_TWOSIDE_BIT|SAVAGE_UNFILLED_BIT|SAVAGE_FALLBACK_BIT) #define TAG(x) x##_twoside_unfilled_fallback #include "tnl_dd/t_dd_tritmp.h" #define IND (SAVAGE_TWOSIDE_BIT|SAVAGE_OFFSET_BIT|SAVAGE_UNFILLED_BIT| \ SAVAGE_FALLBACK_BIT) #define TAG(x) x##_twoside_offset_unfilled_fallback #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(); } /*********************************************************************** * Rasterization fallback helpers * ***********************************************************************/ /* This code is hit only when a mix of accelerated and unaccelerated * primitives are being drawn, and only for the unaccelerated * primitives. */ static void savage_fallback_tri( savageContextPtr imesa, savageVertexPtr v0, savageVertexPtr v1, savageVertexPtr v2 ) { GLcontext *ctx = imesa->glCtx; SWvertex v[3]; _swsetup_Translate( ctx, v0, &v[0] ); _swsetup_Translate( ctx, v1, &v[1] ); _swsetup_Translate( ctx, v2, &v[2] ); _swrast_Triangle( ctx, &v[0], &v[1], &v[2] ); } static void savage_fallback_line( savageContextPtr imesa, savageVertexPtr v0, savageVertexPtr v1 ) { GLcontext *ctx = imesa->glCtx; SWvertex v[2]; _swsetup_Translate( ctx, v0, &v[0] ); _swsetup_Translate( ctx, v1, &v[1] ); _swrast_Line( ctx, &v[0], &v[1] ); } static void savage_fallback_point( savageContextPtr imesa, savageVertexPtr v0 ) { GLcontext *ctx = imesa->glCtx; SWvertex v[1]; _swsetup_Translate( ctx, v0, &v[0] ); _swrast_Point( ctx, &v[0] ); } /**********************************************************************/ /* Render unclipped begin/end objects */ /**********************************************************************/ #define VERT(x) (savageVertexPtr)(savageVerts + (x * vertsize * sizeof(int))) #define RENDER_POINTS( start, count ) \ for ( ; start < count ; start++) \ savage_draw_point( imesa, VERT(start) ) #define RENDER_LINE( v0, v1 ) \ savage_draw_line( imesa, VERT(v0), VERT(v1) ) #define RENDER_TRI( v0, v1, v2 ) \ savage_draw_triangle( imesa, VERT(v0), VERT(v1), VERT(v2) ) #define RENDER_QUAD( v0, v1, v2, v3 ) \ savage_draw_quad( imesa, VERT(v0), VERT(v1), VERT(v2), VERT(v3) ) #define INIT(x) do { \ if (0) fprintf(stderr, "%s\n", __FUNCTION__); \ savageRenderPrimitive( ctx, x ); \ /*SAVAGE_CONTEXT(ctx)->render_primitive = x;*/ \ } while (0) #undef LOCAL_VARS #define LOCAL_VARS \ savageContextPtr imesa = SAVAGE_CONTEXT(ctx); \ const GLuint vertsize = imesa->vertex_size; \ const char *savageVerts = (char *)imesa->verts; \ 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) savage_##x##_verts #include "tnl/t_vb_rendertmp.h" #undef ELT #undef TAG #define TAG(x) savage_##x##_elts #define ELT(x) elt[x] #include "tnl/t_vb_rendertmp.h" /**********************************************************************/ /* Render clipped primitives */ /**********************************************************************/ static void savageRenderClippedPoly( GLcontext *ctx, const GLuint *elts, GLuint n ) { TNLcontext *tnl = TNL_CONTEXT(ctx); struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; /* 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; } } static void savageRenderClippedLine( GLcontext *ctx, GLuint ii, GLuint jj ) { TNLcontext *tnl = TNL_CONTEXT(ctx); tnl->Driver.Render.Line( ctx, ii, jj ); } /* static void savageFastRenderClippedPoly( GLcontext *ctx, const GLuint *elts, GLuint n ) { r128ContextPtr rmesa = R128_CONTEXT( ctx ); GLuint vertsize = rmesa->vertex_size; GLuint *vb = r128AllocDmaLow( rmesa, (n-2) * 3 * 4 * vertsize ); GLubyte *r128verts = (GLubyte *)rmesa->verts; const GLuint shift = rmesa->vertex_stride_shift; const GLuint *start = (const GLuint *)VERT(elts[0]); int i,j; rmesa->num_verts += (n-2) * 3; for (i = 2 ; i < n ; i++) { COPY_DWORDS( j, vb, vertsize, (r128VertexPtr) start ); COPY_DWORDS( j, vb, vertsize, (r128VertexPtr) VERT(elts[i-1]) ); COPY_DWORDS( j, vb, vertsize, (r128VertexPtr) VERT(elts[i]) ); } } */ /**********************************************************************/ /* Choose render functions */ /**********************************************************************/ #define _SAVAGE_NEW_RENDER_STATE (_DD_NEW_LINE_STIPPLE | \ _DD_NEW_LINE_SMOOTH | \ _DD_NEW_POINT_SMOOTH | \ _DD_NEW_TRI_SMOOTH | \ _DD_NEW_TRI_UNFILLED | \ _DD_NEW_TRI_LIGHT_TWOSIDE | \ _DD_NEW_TRI_OFFSET) \ /* original driver didn't have DD_POINT_SMOOTH. really needed? */ #define POINT_FALLBACK (DD_POINT_SMOOTH) #define LINE_FALLBACK (DD_LINE_STIPPLE|DD_LINE_SMOOTH) #define TRI_FALLBACK (DD_TRI_SMOOTH) #define ANY_FALLBACK_FLAGS (POINT_FALLBACK|LINE_FALLBACK|TRI_FALLBACK) #define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE|DD_TRI_OFFSET|DD_TRI_UNFILLED) static void savageChooseRenderState(GLcontext *ctx) { savageContextPtr imesa = SAVAGE_CONTEXT(ctx); GLuint flags = ctx->_TriangleCaps; GLuint index = 0; if (flags & (ANY_RASTER_FLAGS|ANY_FALLBACK_FLAGS)) { imesa->draw_point = savage_draw_point; imesa->draw_line = savage_draw_line; imesa->draw_tri = savage_draw_triangle; if (flags & ANY_RASTER_FLAGS) { if (flags & DD_TRI_LIGHT_TWOSIDE) index |= SAVAGE_TWOSIDE_BIT; if (flags & DD_TRI_OFFSET) index |= SAVAGE_OFFSET_BIT; if (flags & DD_TRI_UNFILLED) index |= SAVAGE_UNFILLED_BIT; } /* Hook in fallbacks for specific primitives. */ if (flags & (POINT_FALLBACK|LINE_FALLBACK|TRI_FALLBACK)) { if (flags & POINT_FALLBACK) imesa->draw_point = savage_fallback_point; if (flags & LINE_FALLBACK) imesa->draw_line = savage_fallback_line; if (flags & TRI_FALLBACK) imesa->draw_tri = savage_fallback_tri; index |= SAVAGE_FALLBACK_BIT; } } if (index != imesa->RenderIndex) { TNLcontext *tnl = TNL_CONTEXT(ctx); 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 = savage_render_tab_verts; tnl->Driver.Render.PrimTabElts = savage_render_tab_elts; tnl->Driver.Render.ClippedLine = rast_tab[index].line; tnl->Driver.Render.ClippedPolygon = savageRenderClippedPoly/*r128FastRenderClippedPoly*/; } else { tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts; tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts; tnl->Driver.Render.ClippedLine = savageRenderClippedLine; tnl->Driver.Render.ClippedPolygon = savageRenderClippedPoly; } imesa->RenderIndex = index; } } /**********************************************************************/ /* Validate state at pipeline start */ /**********************************************************************/ static void savageRunPipeline( GLcontext *ctx ) { savageContextPtr imesa = SAVAGE_CONTEXT(ctx); if (imesa->new_state) savageDDUpdateHwState( ctx ); if (!imesa->Fallback && imesa->new_gl_state) { if (imesa->new_gl_state & _SAVAGE_NEW_RENDER_STATE) savageChooseRenderState( ctx ); imesa->new_gl_state = 0; } _tnl_run_pipeline( ctx ); } /**********************************************************************/ /* High level hooks for t_vb_render.c */ /**********************************************************************/ /* This is called when Mesa switches between rendering triangle * primitives (such as GL_POLYGON, GL_QUADS, GL_TRIANGLE_STRIP, etc), * and lines, points and bitmaps. * * As the r128 uses triangles to render lines and points, it is * necessary to turn off hardware culling when rendering these * primitives. */ static void savageRasterPrimitive( GLcontext *ctx, GLuint prim ) { savageContextPtr imesa = SAVAGE_CONTEXT( ctx ); /* Update culling */ if (imesa->raster_primitive != prim) { imesa->raster_primitive = prim; imesa->new_state |= SAVAGE_NEW_CULL; savageDDUpdateHwState (ctx); } #if 0 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; } #endif } static void savageRenderPrimitive( GLcontext *ctx, GLenum prim ) { savageContextPtr imesa = SAVAGE_CONTEXT(ctx); GLuint rprim = reduced_prim[prim]; imesa->render_primitive = prim; if (rprim == GL_TRIANGLES && (ctx->_TriangleCaps & DD_TRI_UNFILLED)) return; if (imesa->raster_primitive != rprim) { savageRasterPrimitive( ctx, rprim ); } } #define EMIT_ATTR( ATTR, STYLE, INDEX, SKIP ) \ do { \ imesa->vertex_attrs[imesa->vertex_attr_count].attrib = (ATTR); \ imesa->vertex_attrs[imesa->vertex_attr_count].format = (STYLE); \ imesa->vertex_attr_count++; \ setupIndex |= (INDEX); \ drawCmd &= ~(SKIP); \ } while (0) #define EMIT_PAD( N ) \ do { \ imesa->vertex_attrs[imesa->vertex_attr_count].attrib = 0; \ imesa->vertex_attrs[imesa->vertex_attr_count].format = EMIT_PAD; \ imesa->vertex_attrs[imesa->vertex_attr_count].offset = (N); \ imesa->vertex_attr_count++; \ } while (0) #define SAVAGE_EMIT_XYZ 0x0001 #define SAVAGE_EMIT_W 0x0002 #define SAVAGE_EMIT_C0 0x0004 #define SAVAGE_EMIT_C1 0x0008 #define SAVAGE_EMIT_FOG 0x0010 #define SAVAGE_EMIT_S0 0x0020 #define SAVAGE_EMIT_T0 0x0040 #define SAVAGE_EMIT_ST0 0x0060 #define SAVAGE_EMIT_S1 0x0080 #define SAVAGE_EMIT_T1 0x0100 #define SAVAGE_EMIT_ST1 0x0180 static void savageRenderStart( GLcontext *ctx ) { savageContextPtr imesa = SAVAGE_CONTEXT(ctx); TNLcontext *tnl = TNL_CONTEXT(ctx); struct vertex_buffer *VB = &tnl->vb; GLuint index = tnl->render_inputs; GLuint setupIndex = SAVAGE_EMIT_XYZ; GLuint drawCmd = SAVAGE_HW_SKIPFLAGS; if (imesa->savageScreen->chipset < S3_SAVAGE4) drawCmd &= ~SAVAGE_HW_NO_UV1; drawCmd &= ~SAVAGE_HW_NO_Z; /* all mesa vertices have a z coordinate */ /* Important: */ VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr; imesa->vertex_attr_count = 0; /* EMIT_ATTR's must be in order as they tell t_vertex.c how to * build up a hardware vertex. */ if ((index & _TNL_BITS_TEX_ANY) || !(ctx->_TriangleCaps & DD_FLATSHADE)) { EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_4F_VIEWPORT, SAVAGE_EMIT_W, SAVAGE_HW_NO_W ); } else { EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_3F_VIEWPORT, 0, 0 ); } /* t_context.c always includes a diffuse color */ EMIT_ATTR( _TNL_ATTRIB_COLOR0, EMIT_4UB_4F_BGRA, SAVAGE_EMIT_C0, SAVAGE_HW_NO_CD ); if (index & (_TNL_BIT_COLOR1|_TNL_BIT_FOG)) { if ((index & _TNL_BIT_COLOR1)) EMIT_ATTR( _TNL_ATTRIB_COLOR1, EMIT_3UB_3F_BGR, SAVAGE_EMIT_C1, SAVAGE_HW_NO_CS ); else EMIT_PAD( 3 ); if ((index & _TNL_BIT_FOG)) EMIT_ATTR( _TNL_ATTRIB_FOG, EMIT_1UB_1F, SAVAGE_EMIT_FOG, SAVAGE_HW_NO_CS ); else EMIT_PAD( 1 ); } if (index & _TNL_BIT_TEX(0)) { if (VB->TexCoordPtr[0]->size > 2) { /* projective textures are not supported by the hardware */ FALLBACK(ctx, SAVAGE_FALLBACK_TEXTURE, GL_TRUE); } if (VB->TexCoordPtr[0]->size == 2) EMIT_ATTR( _TNL_ATTRIB_TEX0, EMIT_2F, SAVAGE_EMIT_ST0, SAVAGE_HW_NO_UV0 ); else EMIT_ATTR( _TNL_ATTRIB_TEX0, EMIT_1F, SAVAGE_EMIT_S0, SAVAGE_HW_NO_U0 ); } if (index & _TNL_BIT_TEX(1)) { if (VB->TexCoordPtr[1]->size > 2) { /* projective textures are not supported by the hardware */ FALLBACK(ctx, SAVAGE_FALLBACK_TEXTURE, GL_TRUE); } if (VB->TexCoordPtr[1]->size == 2) EMIT_ATTR( _TNL_ATTRIB_TEX1, EMIT_2F, SAVAGE_EMIT_ST1, SAVAGE_HW_NO_UV1 ); else EMIT_ATTR( _TNL_ATTRIB_TEX1, EMIT_1F, SAVAGE_EMIT_S1, SAVAGE_HW_NO_U1 ); } /* Need to change the vertex emit code if the SetupIndex changed or * is set for the first time (indicated by vertex_size == 0). */ if (setupIndex != imesa->SetupIndex || imesa->vertex_size == 0) { imesa->vertex_size = _tnl_install_attrs( ctx, imesa->vertex_attrs, imesa->vertex_attr_count, imesa->hw_viewport, 0 ); imesa->vertex_size >>= 2; imesa->SetupIndex = setupIndex; imesa->DrawPrimitiveCmd = drawCmd; } if (!SAVAGE_CONTEXT(ctx)->Fallback) { /* Update hardware state and get the lock */ savageDDRenderStart( ctx ); } else { tnl->Driver.Render.Start(ctx); } } static void savageRenderFinish( GLcontext *ctx ) { /* Release the lock */ savageDDRenderEnd( ctx ); /* Flush the last primitive now, before any state is changed. * Alternatively state could be emitted in all state-changing * functions in savagestate.c and when changing the vertex format * above. */ FLUSH_BATCH(SAVAGE_CONTEXT(ctx)); if (SAVAGE_CONTEXT(ctx)->RenderIndex & SAVAGE_FALLBACK_BIT) _swrast_flush( ctx ); } /**********************************************************************/ /* Transition to/from hardware rasterization. */ /**********************************************************************/ void savageFallback( GLcontext *ctx, GLuint bit, GLboolean mode ) { TNLcontext *tnl = TNL_CONTEXT(ctx); savageContextPtr imesa = SAVAGE_CONTEXT(ctx); GLuint oldfallback = imesa->Fallback; if (mode) { imesa->Fallback |= bit; if (oldfallback == 0) { /* the first fallback */ FLUSH_BATCH( imesa ); _swsetup_Wakeup( ctx ); imesa->RenderIndex = ~0; } } else { imesa->Fallback &= ~bit; if (oldfallback == bit) { /* the last fallback */ _swrast_flush( ctx ); tnl->Driver.Render.Start = savageRenderStart; tnl->Driver.Render.PrimitiveNotify = savageRenderPrimitive; tnl->Driver.Render.Finish = savageRenderFinish; tnl->Driver.Render.BuildVertices = _tnl_build_vertices; tnl->Driver.Render.CopyPV = _tnl_copy_pv; tnl->Driver.Render.Interp = _tnl_interp; _tnl_invalidate_vertex_state( ctx, ~0 ); _tnl_invalidate_vertices( ctx, ~0 ); _tnl_install_attrs( ctx, imesa->vertex_attrs, imesa->vertex_attr_count, imesa->hw_viewport, 0 ); imesa->new_gl_state |= _SAVAGE_NEW_RENDER_STATE; } } } /**********************************************************************/ /* Initialization. */ /**********************************************************************/ void savageInitTriFuncs( GLcontext *ctx ) { TNLcontext *tnl = TNL_CONTEXT(ctx); static int firsttime = 1; if (firsttime) { init_rast_tab(); firsttime = 0; } tnl->Driver.RunPipeline = savageRunPipeline; tnl->Driver.Render.Start = savageRenderStart; tnl->Driver.Render.Finish = savageRenderFinish; tnl->Driver.Render.PrimitiveNotify = savageRenderPrimitive; tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple; tnl->Driver.Render.BuildVertices = _tnl_build_vertices; tnl->Driver.Render.CopyPV = _tnl_copy_pv; tnl->Driver.Render.Interp = _tnl_interp; _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12, (6 + 2*ctx->Const.MaxTextureUnits) * sizeof(GLfloat) ); SAVAGE_CONTEXT(ctx)->verts = (char *)tnl->clipspace.vertex_buf; } /*** * Pipeline stage for texture coordinate normalization * This should probably go somewhere else. ***/ struct texnorm_stage_data { GLvector4f texcoord[MAX_TEXTURE_UNITS]; }; #define TEXNORM_STAGE_DATA(stage) ((struct texnorm_stage_data *)stage->privatePtr) static GLboolean run_texnorm_stage( GLcontext *ctx, struct tnl_pipeline_stage *stage ) { struct texnorm_stage_data *store = TEXNORM_STAGE_DATA(stage); savageContextPtr imesa = SAVAGE_CONTEXT(ctx); TNLcontext *tnl = TNL_CONTEXT(ctx); struct vertex_buffer *VB = &tnl->vb; GLuint i; if (imesa->Fallback) return GL_TRUE; for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++) { if (!(stage->inputs & stage->changed_inputs & VERT_BIT_TEX(i))) continue; GLuint reallyEnabled = ctx->Texture.Unit[i]._ReallyEnabled; struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current; GLboolean normalizeS = (texObj->WrapS == GL_REPEAT); GLboolean normalizeT = (reallyEnabled & TEXTURE_2D_BIT) && (texObj->WrapT == GL_REPEAT); GLfloat *in = (GLfloat *)VB->TexCoordPtr[i]->data; GLint instride = VB->TexCoordPtr[i]->stride; GLfloat (*out)[4] = store->texcoord[i].data; GLint j; if (normalizeS && normalizeT) { /* determine extreme values in S and T */ GLfloat minS = in[0], maxS = in[0], minT = in[1], maxT = in[1]; GLfloat correctionS, correctionT; in = (GLfloat *)((GLubyte *)in + instride); for (j = 1; j < VB->Count; ++j) { if (in[0] < minS) minS = in[0]; else if (in[0] > maxS) maxS = in[0]; if (in[1] < minT) minT = in[1]; else if (in[1] > maxT) maxT = in[1]; in = (GLfloat *)((GLubyte *)in + instride); } correctionS = -floor((minS + maxS) * 0.5 + 0.5); correctionT = -floor((minT + maxT) * 0.5 + 0.5); in = (GLfloat *)VB->TexCoordPtr[i]->data; for (j = 0; j < VB->Count; ++j) { out[j][0] = in[0] + correctionS; out[j][1] = in[1] + correctionT; in = (GLfloat *)((GLubyte *)in + instride); } } else if (normalizeS) { /* determine extreme values in S */ GLfloat minS = in[0], maxS = in[0]; GLfloat correctionS; in = (GLfloat *)((GLubyte *)in + instride); for (j = 1; j < VB->Count; ++j) { if (in[0] < minS) minS = in[0]; else if (in[0] > maxS) maxS = in[0]; in = (GLfloat *)((GLubyte *)in + instride); } correctionS = -floor((minS + maxS) * 0.5 + 0.5); in = (GLfloat *)VB->TexCoordPtr[i]->data; if (reallyEnabled & TEXTURE_2D_BIT) { for (j = 0; j < VB->Count; ++j) { out[j][0] = in[0] + correctionS; out[j][1] = in[1]; in = (GLfloat *)((GLubyte *)in + instride); } } else { for (j = 0; j < VB->Count; ++j) { out[j][0] = in[0] + correctionS; in = (GLfloat *)((GLubyte *)in + instride); } } } else if (normalizeT) { /* determine extreme values in T */ GLfloat minT = in[1], maxT = in[1]; GLfloat correctionT; in = (GLfloat *)((GLubyte *)in + instride); for (j = 1; j < VB->Count; ++j) { if (in[1] < minT) minT = in[1]; else if (in[1] > maxT) maxT = in[1]; in = (GLfloat *)((GLubyte *)in + instride); } correctionT = -floor((minT + maxT) * 0.5 + 0.5); in = (GLfloat *)VB->TexCoordPtr[i]->data; for (j = 0; j < VB->Count; ++j) { out[j][0] = in[0]; out[j][1] = in[1] + correctionT; in = (GLfloat *)((GLubyte *)in + instride); } } if (normalizeS || normalizeT) VB->AttribPtr[VERT_ATTRIB_TEX0+i] = VB->TexCoordPtr[i] = &store->texcoord[i]; } return GL_TRUE; } /* Called the first time stage->run() is invoked. */ static GLboolean alloc_texnorm_data( GLcontext *ctx, struct tnl_pipeline_stage *stage ) { struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; struct texnorm_stage_data *store; GLuint i; stage->privatePtr = CALLOC(sizeof(*store)); store = TEXNORM_STAGE_DATA(stage); if (!store) return GL_FALSE; for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++) _mesa_vector4f_alloc( &store->texcoord[i], 0, VB->Size, 32 ); /* Now run the stage. */ stage->run = run_texnorm_stage; return stage->run( ctx, stage ); } static void check_texnorm( GLcontext *ctx, struct tnl_pipeline_stage *stage ) { GLuint flags = 0; if (((ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) && (ctx->Texture.Unit[0]._Current->WrapS == GL_REPEAT)) || ((ctx->Texture.Unit[0]._ReallyEnabled & TEXTURE_2D_BIT) && (ctx->Texture.Unit[0]._Current->WrapT == GL_REPEAT))) flags |= VERT_BIT_TEX0; if (((ctx->Texture.Unit[1]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) && (ctx->Texture.Unit[1]._Current->WrapS == GL_REPEAT)) || ((ctx->Texture.Unit[1]._ReallyEnabled & TEXTURE_2D_BIT) && (ctx->Texture.Unit[1]._Current->WrapT == GL_REPEAT))) flags |= VERT_BIT_TEX1; stage->inputs = flags; stage->outputs = flags; stage->active = (flags != 0); } static void free_texnorm_data( struct tnl_pipeline_stage *stage ) { struct texnorm_stage_data *store = TEXNORM_STAGE_DATA(stage); GLuint i; if (store) { for (i = 0 ; i < MAX_TEXTURE_UNITS ; i++) if (store->texcoord[i].data) _mesa_vector4f_free( &store->texcoord[i] ); FREE( store ); stage->privatePtr = 0; } } const struct tnl_pipeline_stage _savage_texnorm_stage = { "savage texture coordinate normalization stage", /* name */ _NEW_TEXTURE, /* check_state */ _NEW_TEXTURE, /* run_state */ GL_TRUE, /* active? */ 0, /* inputs */ 0, /* outputs */ 0, /* changed_inputs */ NULL, /* private data */ free_texnorm_data, /* destructor */ check_texnorm, /* check */ alloc_texnorm_data, /* run -- initially set to init */ };