diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgastate.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgastate.c | 1237 |
1 files changed, 1237 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgastate.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgastate.c new file mode 100644 index 000000000..72d5c9fb0 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgastate.c @@ -0,0 +1,1237 @@ +/* + * 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/mgastate.c,v 1.13 2002/10/30 12:51:36 alanh Exp $ */ + + +#include "mtypes.h" +#include "buffers.h" +#include "colormac.h" +#include "dd.h" + +#include "mm.h" +#include "mgacontext.h" +#include "mgadd.h" +#include "mgastate.h" +#include "mgatex.h" +#include "mgavb.h" +#include "mgatris.h" +#include "mgaioctl.h" +#include "mgaregs.h" + +#include "swrast/swrast.h" +#include "array_cache/acache.h" +#include "tnl/tnl.h" +#include "tnl/t_context.h" +#include "tnl/t_pipeline.h" +#include "swrast_setup/swrast_setup.h" + +#include "xmlpool.h" + +static void updateSpecularLighting( GLcontext *ctx ); + +static const GLuint mgarop_NoBLK[16] = { + DC_atype_rpl | 0x00000000, DC_atype_rstr | 0x00080000, + DC_atype_rstr | 0x00040000, DC_atype_rpl | 0x000c0000, + DC_atype_rstr | 0x00020000, DC_atype_rstr | 0x000a0000, + DC_atype_rstr | 0x00060000, DC_atype_rstr | 0x000e0000, + DC_atype_rstr | 0x00010000, DC_atype_rstr | 0x00090000, + DC_atype_rstr | 0x00050000, DC_atype_rstr | 0x000d0000, + DC_atype_rpl | 0x00030000, DC_atype_rstr | 0x000b0000, + DC_atype_rstr | 0x00070000, DC_atype_rpl | 0x000f0000 +}; + +/* ============================================================= + * Alpha blending + */ + +static void mgaDDAlphaFunc(GLcontext *ctx, GLenum func, GLfloat ref) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLubyte refByte; + GLuint a; + + CLAMPED_FLOAT_TO_UBYTE(refByte, ref); + + switch ( func ) { + case GL_NEVER: + a = AC_atmode_alt; + refByte = 0; + break; + case GL_LESS: + a = AC_atmode_alt; + break; + case GL_GEQUAL: + a = AC_atmode_agte; + break; + case GL_LEQUAL: + a = AC_atmode_alte; + break; + case GL_GREATER: + a = AC_atmode_agt; + break; + case GL_NOTEQUAL: + a = AC_atmode_ane; + break; + case GL_EQUAL: + a = AC_atmode_ae; + break; + case GL_ALWAYS: + a = AC_atmode_noacmp; + break; + default: + a = 0; + break; + } + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.alpha_func = a | MGA_FIELD( AC_atref, refByte ); +} + +static void updateBlendLogicOp(GLcontext *ctx) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + + mmesa->hw.blend_func_enable = + (ctx->Color.BlendEnabled && !ctx->Color._LogicOpEnabled) ? ~0 : 0; + + FALLBACK( ctx, MGA_FALLBACK_BLEND, + ctx->Color.BlendEnabled && !ctx->Color._LogicOpEnabled && + mmesa->hw.blend_func == (AC_src_src_alpha_sat | AC_dst_zero) ); +} + +static void mgaDDBlendEquationSeparate(GLcontext *ctx, + GLenum modeRGB, GLenum modeA) +{ + assert( modeRGB == modeA ); + updateBlendLogicOp( ctx ); +} + +static void mgaDDBlendFuncSeparate( GLcontext *ctx, GLenum sfactorRGB, + GLenum dfactorRGB, GLenum sfactorA, + GLenum dfactorA ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLuint src; + GLuint dst; + + switch (ctx->Color.BlendSrcRGB) { + case GL_ZERO: + src = AC_src_zero; break; + case GL_SRC_ALPHA: + src = AC_src_src_alpha; break; + case GL_ONE: + default: /* never happens */ + src = AC_src_one; break; + case GL_DST_COLOR: + src = AC_src_dst_color; break; + case GL_ONE_MINUS_DST_COLOR: + src = AC_src_om_dst_color; break; + case GL_ONE_MINUS_SRC_ALPHA: + src = AC_src_om_src_alpha; break; + case GL_DST_ALPHA: + src = (ctx->Visual.alphaBits > 0) + ? AC_src_dst_alpha : AC_src_one; + break; + case GL_ONE_MINUS_DST_ALPHA: + src = (ctx->Visual.alphaBits > 0) + ? AC_src_om_dst_alpha : AC_src_zero; + break; + case GL_SRC_ALPHA_SATURATE: + src = (ctx->Visual.alphaBits > 0) + ? AC_src_src_alpha_sat : AC_src_zero; + break; + } + + switch (ctx->Color.BlendDstRGB) { + case GL_SRC_ALPHA: + dst = AC_dst_src_alpha; break; + case GL_ONE_MINUS_SRC_ALPHA: + dst = AC_dst_om_src_alpha; break; + default: /* never happens */ + case GL_ZERO: + dst = AC_dst_zero; break; + case GL_ONE: + dst = AC_dst_one; break; + case GL_SRC_COLOR: + dst = AC_dst_src_color; break; + case GL_ONE_MINUS_SRC_COLOR: + dst = AC_dst_om_src_color; break; + case GL_DST_ALPHA: + dst = (ctx->Visual.alphaBits > 0) + ? AC_dst_dst_alpha : AC_dst_one; + break; + case GL_ONE_MINUS_DST_ALPHA: + dst = (ctx->Visual.alphaBits > 0) + ? AC_dst_om_dst_alpha : AC_dst_zero; + break; + } + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.blend_func = (src | dst); + + FALLBACK( ctx, MGA_FALLBACK_BLEND, + ctx->Color.BlendEnabled && !ctx->Color._LogicOpEnabled && + mmesa->hw.blend_func == (AC_src_src_alpha_sat | AC_dst_zero) ); +} + +/* ============================================================= + * Depth testing + */ + +static void mgaDDDepthFunc(GLcontext *ctx, GLenum func) +{ + mgaContextPtr mmesa = MGA_CONTEXT( ctx ); + int zmode; + + switch (func) { + case GL_NEVER: + /* can't do this in h/w, we'll use a s/w fallback */ + FALLBACK (ctx, MGA_FALLBACK_DEPTH, ctx->Depth.Test); + + /* FALLTHROUGH */ + case GL_ALWAYS: + zmode = DC_zmode_nozcmp; break; + case GL_LESS: + zmode = DC_zmode_zlt; break; + case GL_LEQUAL: + zmode = DC_zmode_zlte; break; + case GL_EQUAL: + zmode = DC_zmode_ze; break; + case GL_GREATER: + zmode = DC_zmode_zgt; break; + case GL_GEQUAL: + zmode = DC_zmode_zgte; break; + case GL_NOTEQUAL: + zmode = DC_zmode_zne; break; + default: + zmode = 0; break; + } + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.zmode &= DC_zmode_MASK; + mmesa->hw.zmode |= zmode; +} + +static void mgaDDDepthMask(GLcontext *ctx, GLboolean flag) +{ + mgaContextPtr mmesa = MGA_CONTEXT( ctx ); + + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.zmode &= DC_atype_MASK; + mmesa->hw.zmode |= (flag) ? DC_atype_zi : DC_atype_i; +} + + +static void mgaDDClearDepth(GLcontext *ctx, GLclampd d) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + /* Select the Z depth. The ~ is used because the _MASK values in the + * MGA driver are used to mask OFF the selected bits. In this case, + * we want to mask off everything except the MA_zwidth bits. + */ + switch (mmesa->setup.maccess & ~MA_zwidth_MASK) { + case MA_zwidth_16: mmesa->ClearDepth = d * 0x0000ffff; break; + case MA_zwidth_24: mmesa->ClearDepth = d * 0xffffff00; break; + case MA_zwidth_32: mmesa->ClearDepth = d * 0xffffffff; break; + default: return; + } +} + + +/* ============================================================= + * Fog + */ + + +static void mgaDDFogfv(GLcontext *ctx, GLenum pname, const GLfloat *param) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + if (pname == GL_FOG_COLOR) { + GLuint color = PACK_COLOR_888((GLubyte)(ctx->Fog.Color[0]*255.0F), + (GLubyte)(ctx->Fog.Color[1]*255.0F), + (GLubyte)(ctx->Fog.Color[2]*255.0F)); + + MGA_STATECHANGE(mmesa, MGA_UPLOAD_CONTEXT); + mmesa->setup.fogcolor = color; + } +} + + +/* ============================================================= + * Scissoring + */ + + +void mgaUpdateClipping(const GLcontext *ctx) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + if (mmesa->driDrawable) + { + int x1 = mmesa->driDrawable->x + ctx->Scissor.X; + int y1 = mmesa->driDrawable->y + mmesa->driDrawable->h + - (ctx->Scissor.Y + ctx->Scissor.Height); + int x2 = x1 + ctx->Scissor.Width; + int y2 = y1 + ctx->Scissor.Height; + + if (x1 < 0) x1 = 0; + if (y1 < 0) y1 = 0; + if (x2 < 0) x2 = 0; + if (y2 < 0) y2 = 0; + + mmesa->scissor_rect.x1 = x1; + mmesa->scissor_rect.y1 = y1; + mmesa->scissor_rect.x2 = x2; + mmesa->scissor_rect.y2 = y2; + + mmesa->dirty |= MGA_UPLOAD_CLIPRECTS; + } +} + + +static void mgaDDScissor( GLcontext *ctx, GLint x, GLint y, + GLsizei w, GLsizei h ) +{ + if ( ctx->Scissor.Enabled ) { + FLUSH_BATCH( MGA_CONTEXT(ctx) ); /* don't pipeline cliprect changes */ + mgaUpdateClipping( ctx ); + } +} + + +/* ============================================================= + * Culling + */ + + +#define _CULL_DISABLE 0 +#define _CULL_NEGATIVE ((1<<11)|(1<<5)|(1<<16)) +#define _CULL_POSITIVE (1<<11) + +static void mgaDDCullFaceFrontFace(GLcontext *ctx, GLenum unused) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + if (ctx->Polygon.CullFlag && + ctx->Polygon.CullFaceMode != GL_FRONT_AND_BACK) + { + mmesa->hw.cull = _CULL_NEGATIVE; + + if (ctx->Polygon.CullFaceMode == GL_FRONT) + mmesa->hw.cull ^= (_CULL_POSITIVE ^ _CULL_NEGATIVE); + + if (ctx->Polygon.FrontFace != GL_CCW) + mmesa->hw.cull ^= (_CULL_POSITIVE ^ _CULL_NEGATIVE); + + mmesa->hw.cull_dualtex = mmesa->hw.cull ^ + (_CULL_POSITIVE ^ _CULL_NEGATIVE); /* warp bug? */ + } + else { + mmesa->hw.cull = _CULL_DISABLE; + mmesa->hw.cull_dualtex = _CULL_DISABLE; + } +} + + +/* ============================================================= + * Masks + */ + +static void mgaDDColorMask(GLcontext *ctx, + GLboolean r, GLboolean g, + GLboolean b, GLboolean a ) +{ + mgaContextPtr mmesa = MGA_CONTEXT( ctx ); + mgaScreenPrivate *mgaScreen = mmesa->mgaScreen; + + + GLuint mask = mgaPackColor(mgaScreen->cpp, + ctx->Color.ColorMask[RCOMP], + ctx->Color.ColorMask[GCOMP], + ctx->Color.ColorMask[BCOMP], + ctx->Color.ColorMask[ACOMP]); + + if (mgaScreen->cpp == 2) + mask = mask | (mask << 16); + + if (mmesa->setup.plnwt != mask) { + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->setup.plnwt = mask; + } +} + + +/* ============================================================= + * Polygon state + */ + +static int mgaStipples[16] = { + 0xffff, + 0xa5a5, + 0x5a5a, + 0xa0a0, + 0x5050, + 0x0a0a, + 0x0505, + 0x8020, + 0x0401, + 0x1040, + 0x0208, + 0x0802, + 0x4010, + 0x0104, + 0x2080, + 0x0000 +}; + +/** + * The MGA supports a subset of possible 4x4 stipples natively, GL + * wants 32x32. Fortunately stipple is usually a repeating pattern. + * + * \param ctx GL rendering context to be affected + * \param mask Pointer to the 32x32 stipple mask + */ + +static void mgaDDPolygonStipple( GLcontext *ctx, const GLubyte *mask ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + const GLubyte *m = mask; + GLubyte p[4]; + int i,j,k; + int active = (ctx->Polygon.StippleFlag && + mmesa->raster_primitive == GL_TRIANGLES); + GLuint stipple; + + FLUSH_BATCH(mmesa); + mmesa->haveHwStipple = 0; + + if (active) { + mmesa->dirty |= MGA_UPLOAD_CONTEXT; + mmesa->setup.dwgctl &= ~(0xf<<20); + } + + p[0] = mask[0] & 0xf; p[0] |= p[0] << 4; + p[1] = mask[4] & 0xf; p[1] |= p[1] << 4; + p[2] = mask[8] & 0xf; p[2] |= p[2] << 4; + p[3] = mask[12] & 0xf; p[3] |= p[3] << 4; + + for (k = 0 ; k < 8 ; k++) + for (j = 0 ; j < 4; j++) + for (i = 0 ; i < 4 ; i++) + if (*m++ != p[j]) { + return; + } + + stipple = ( ((p[0] & 0xf) << 0) | + ((p[1] & 0xf) << 4) | + ((p[2] & 0xf) << 8) | + ((p[3] & 0xf) << 12) ); + + for (i = 0 ; i < 16 ; i++) + if (mgaStipples[i] == stipple) { + mmesa->poly_stipple = i<<20; + mmesa->haveHwStipple = 1; + break; + } + + if (active) { + mmesa->setup.dwgctl &= ~(0xf<<20); + mmesa->setup.dwgctl |= mmesa->poly_stipple; + } +} + + +/* ============================================================= + * Rendering attributes + * + * We really don't want to recalculate all this every time we bind a + * texture. These things shouldn't change all that often, so it makes + * sense to break them out of the core texture state update routines. + */ + +static void updateSpecularLighting( GLcontext *ctx ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + unsigned int specen; + + specen = NEED_SECONDARY_COLOR(ctx) ? TMC_specen_enable : 0; + + if ( specen != mmesa->hw.specen ) { + mmesa->hw.specen = specen; + mmesa->dirty |= MGA_UPLOAD_TEX0 | MGA_UPLOAD_TEX1; + } +} + + +/* ============================================================= + * Materials + */ + + +static void mgaDDLightModelfv(GLcontext *ctx, GLenum pname, + const GLfloat *param) +{ + if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) { + FLUSH_BATCH( MGA_CONTEXT(ctx) ); + updateSpecularLighting( ctx ); + } +} + + +/* ============================================================= + * Stencil + */ + + +static void mgaDDStencilFunc(GLcontext *ctx, GLenum func, GLint ref, + GLuint mask) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLuint stencil; + GLuint stencilctl; + + stencil = MGA_FIELD( S_sref, ref ) | MGA_FIELD( S_smsk, mask ); + switch (func) + { + case GL_NEVER: + stencilctl = SC_smode_snever; + break; + case GL_LESS: + stencilctl = SC_smode_slt; + break; + case GL_LEQUAL: + stencilctl = SC_smode_slte; + break; + case GL_GREATER: + stencilctl = SC_smode_sgt; + break; + case GL_GEQUAL: + stencilctl = SC_smode_sgte; + break; + case GL_NOTEQUAL: + stencilctl = SC_smode_sne; + break; + case GL_EQUAL: + stencilctl = SC_smode_se; + break; + case GL_ALWAYS: + default: + stencilctl = SC_smode_salways; + break; + } + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.stencil &= (S_sref_MASK & S_smsk_MASK); + mmesa->hw.stencil |= stencil; + mmesa->hw.stencilctl &= SC_smode_MASK; + mmesa->hw.stencilctl |= stencilctl; +} + +static void mgaDDStencilMask(GLcontext *ctx, GLuint mask) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.stencil &= S_swtmsk_MASK; + mmesa->hw.stencil |= MGA_FIELD( S_swtmsk, mask ); +} + +static void mgaDDStencilOp(GLcontext *ctx, GLenum fail, GLenum zfail, + GLenum zpass) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLuint stencilctl; + + stencilctl = 0; + switch (ctx->Stencil.FailFunc[0]) + { + case GL_KEEP: + stencilctl |= SC_sfailop_keep; + break; + case GL_ZERO: + stencilctl |= SC_sfailop_zero; + break; + case GL_REPLACE: + stencilctl |= SC_sfailop_replace; + break; + case GL_INCR: + stencilctl |= SC_sfailop_incrsat; + break; + case GL_DECR: + stencilctl |= SC_sfailop_decrsat; + break; + case GL_INCR_WRAP: + stencilctl |= SC_sfailop_incr; + break; + case GL_DECR_WRAP: + stencilctl |= SC_sfailop_decr; + break; + case GL_INVERT: + stencilctl |= SC_sfailop_invert; + break; + default: + break; + } + + switch (ctx->Stencil.ZFailFunc[0]) + { + case GL_KEEP: + stencilctl |= SC_szfailop_keep; + break; + case GL_ZERO: + stencilctl |= SC_szfailop_zero; + break; + case GL_REPLACE: + stencilctl |= SC_szfailop_replace; + break; + case GL_INCR: + stencilctl |= SC_szfailop_incrsat; + break; + case GL_DECR: + stencilctl |= SC_szfailop_decrsat; + break; + case GL_INCR_WRAP: + stencilctl |= SC_szfailop_incr; + break; + case GL_DECR_WRAP: + stencilctl |= SC_szfailop_decr; + break; + case GL_INVERT: + stencilctl |= SC_szfailop_invert; + break; + default: + break; + } + + switch (ctx->Stencil.ZPassFunc[0]) + { + case GL_KEEP: + stencilctl |= SC_szpassop_keep; + break; + case GL_ZERO: + stencilctl |= SC_szpassop_zero; + break; + case GL_REPLACE: + stencilctl |= SC_szpassop_replace; + break; + case GL_INCR: + stencilctl |= SC_szpassop_incrsat; + break; + case GL_DECR: + stencilctl |= SC_szpassop_decrsat; + break; + case GL_INCR_WRAP: + stencilctl |= SC_szpassop_incr; + break; + case GL_DECR_WRAP: + stencilctl |= SC_szpassop_decr; + break; + case GL_INVERT: + stencilctl |= SC_szpassop_invert; + break; + default: + break; + } + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.stencilctl &= (SC_sfailop_MASK & SC_szfailop_MASK + & SC_szpassop_MASK); + mmesa->hw.stencilctl |= stencilctl; +} + + +/* ============================================================= + * Window position and viewport transformation + */ + +void mgaCalcViewport( GLcontext *ctx ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + const GLfloat *v = ctx->Viewport._WindowMap.m; + GLfloat *m = mmesa->hw_viewport; + + /* See also mga_translate_vertex. + */ + m[MAT_SX] = v[MAT_SX]; + m[MAT_TX] = v[MAT_TX] + mmesa->drawX + SUBPIXEL_X; + m[MAT_SY] = - v[MAT_SY]; + m[MAT_TY] = - v[MAT_TY] + mmesa->driDrawable->h + mmesa->drawY + SUBPIXEL_Y; + m[MAT_SZ] = v[MAT_SZ] * mmesa->depth_scale; + m[MAT_TZ] = v[MAT_TZ] * mmesa->depth_scale; + + mmesa->SetupNewInputs = ~0; +} + +static void mgaViewport( GLcontext *ctx, + GLint x, GLint y, + GLsizei width, GLsizei height ) +{ + /* update size of Mesa/software ancillary buffers */ + _mesa_ResizeBuffersMESA(); + mgaCalcViewport( ctx ); +} + +static void mgaDepthRange( GLcontext *ctx, + GLclampd nearval, GLclampd farval ) +{ + mgaCalcViewport( ctx ); +} + + +/* ============================================================= + * Miscellaneous + */ + +static void mgaDDClearColor(GLcontext *ctx, + const GLfloat color[4] ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLubyte c[4]; + CLAMPED_FLOAT_TO_UBYTE(c[0], color[0]); + CLAMPED_FLOAT_TO_UBYTE(c[1], color[1]); + CLAMPED_FLOAT_TO_UBYTE(c[2], color[2]); + CLAMPED_FLOAT_TO_UBYTE(c[3], color[3]); + + mmesa->ClearColor = mgaPackColor( mmesa->mgaScreen->cpp, + c[0], c[1], c[2], c[3]); +} + + +/* Fallback to swrast for select and feedback. + */ +static void mgaRenderMode( GLcontext *ctx, GLenum mode ) +{ + FALLBACK( ctx, MGA_FALLBACK_RENDERMODE, (mode != GL_RENDER) ); +} + + +static void mgaDDLogicOp( GLcontext *ctx, GLenum opcode ) +{ + mgaContextPtr mmesa = MGA_CONTEXT( ctx ); + + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.rop = mgarop_NoBLK[ opcode & 0x0f ]; +} + + +static void mgaXMesaSetFrontClipRects( mgaContextPtr mmesa ) +{ + __DRIdrawablePrivate *driDrawable = mmesa->driDrawable; + + if (driDrawable->numClipRects == 0) { + static drm_clip_rect_t zeroareacliprect = {0,0,0,0}; + mmesa->numClipRects = 1; + mmesa->pClipRects = &zeroareacliprect; + } else { + mmesa->numClipRects = driDrawable->numClipRects; + mmesa->pClipRects = driDrawable->pClipRects; + } + mmesa->drawX = driDrawable->x; + mmesa->drawY = driDrawable->y; + + mmesa->setup.dstorg = mmesa->drawOffset; + mmesa->dirty |= MGA_UPLOAD_CONTEXT | MGA_UPLOAD_CLIPRECTS; +} + + +static void mgaXMesaSetBackClipRects( mgaContextPtr mmesa ) +{ + __DRIdrawablePrivate *driDrawable = mmesa->driDrawable; + + if (driDrawable->numBackClipRects == 0) + { + if (driDrawable->numClipRects == 0) { + static drm_clip_rect_t zeroareacliprect = {0,0,0,0}; + mmesa->numClipRects = 1; + mmesa->pClipRects = &zeroareacliprect; + } else { + mmesa->numClipRects = driDrawable->numClipRects; + mmesa->pClipRects = driDrawable->pClipRects; + } + mmesa->drawX = driDrawable->x; + mmesa->drawY = driDrawable->y; + } else { + mmesa->numClipRects = driDrawable->numBackClipRects; + mmesa->pClipRects = driDrawable->pBackClipRects; + mmesa->drawX = driDrawable->backX; + mmesa->drawY = driDrawable->backY; + } + + mmesa->setup.dstorg = mmesa->drawOffset; + mmesa->dirty |= MGA_UPLOAD_CONTEXT | MGA_UPLOAD_CLIPRECTS; +} + + +void mgaUpdateRects( mgaContextPtr mmesa, GLuint buffers ) +{ + __DRIdrawablePrivate *driDrawable = mmesa->driDrawable; + drm_mga_sarea_t *sarea = mmesa->sarea; + + + DRI_VALIDATE_DRAWABLE_INFO(mmesa->driScreen, driDrawable); + mmesa->dirty_cliprects = 0; + + if (mmesa->draw_buffer == MGA_FRONT) + mgaXMesaSetFrontClipRects( mmesa ); + else + mgaXMesaSetBackClipRects( mmesa ); + + sarea->req_drawable = driDrawable->draw; + sarea->req_draw_buffer = mmesa->draw_buffer; + + mgaUpdateClipping( mmesa->glCtx ); + mgaCalcViewport( mmesa->glCtx ); + + mmesa->dirty |= MGA_UPLOAD_CLIPRECTS; +} + + +static void mgaDDDrawBuffer(GLcontext *ctx, GLenum mode ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + FLUSH_BATCH( mmesa ); + + /* + * _DrawDestMask is easier to cope with than <mode>. + */ + switch ( ctx->DrawBuffer->_ColorDrawBufferMask[0] ) { + case BUFFER_BIT_FRONT_LEFT: + mmesa->setup.dstorg = mmesa->mgaScreen->frontOffset; + mmesa->dirty |= MGA_UPLOAD_CONTEXT; + mmesa->draw_buffer = MGA_FRONT; + mgaXMesaSetFrontClipRects( mmesa ); + FALLBACK( ctx, MGA_FALLBACK_DRAW_BUFFER, GL_FALSE ); + break; + case BUFFER_BIT_BACK_LEFT: + mmesa->setup.dstorg = mmesa->mgaScreen->backOffset; + mmesa->draw_buffer = MGA_BACK; + mmesa->dirty |= MGA_UPLOAD_CONTEXT; + mgaXMesaSetBackClipRects( mmesa ); + FALLBACK( ctx, MGA_FALLBACK_DRAW_BUFFER, GL_FALSE ); + break; + default: + /* GL_NONE or GL_FRONT_AND_BACK or stereo left&right, etc */ + FALLBACK( ctx, MGA_FALLBACK_DRAW_BUFFER, GL_TRUE ); + return; + } + + /* We want to update the s/w rast state too so that r200SetBuffer() + * gets called. + */ + _swrast_DrawBuffer(ctx, mode); +} + + +static void mgaDDReadBuffer(GLcontext *ctx, GLenum mode ) +{ + /* nothing, until we implement h/w glRead/CopyPixels or CopyTexImage */ +} + + +/* ============================================================= + * State enable/disable + */ + + +static void mgaDDEnable(GLcontext *ctx, GLenum cap, GLboolean state) +{ + mgaContextPtr mmesa = MGA_CONTEXT( ctx ); + + switch(cap) { + case GL_DITHER: + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + if (!ctx->Color.DitherFlag) + mmesa->setup.maccess |= MA_nodither_enable; + else + mmesa->setup.maccess &= ~MA_nodither_enable; + break; + case GL_LIGHTING: + case GL_COLOR_SUM_EXT: + FLUSH_BATCH( mmesa ); + updateSpecularLighting( ctx ); + break; + case GL_ALPHA_TEST: + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->hw.alpha_func_enable = (state) ? ~0 : 0; + break; + case GL_DEPTH_TEST: + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + FALLBACK (ctx, MGA_FALLBACK_DEPTH, + ctx->Depth.Func == GL_NEVER && ctx->Depth.Test); + break; + + case GL_SCISSOR_TEST: + FLUSH_BATCH( mmesa ); + mmesa->scissor = state; + mgaUpdateClipping( ctx ); + break; + + case GL_FOG: + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + if (ctx->Fog.Enabled) + mmesa->setup.maccess |= MA_fogen_enable; + else + mmesa->setup.maccess &= ~MA_fogen_enable; + break; + case GL_CULL_FACE: + mgaDDCullFaceFrontFace( ctx, 0 ); + break; + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_3D: + break; + case GL_POLYGON_STIPPLE: + if (mmesa->haveHwStipple && mmesa->raster_primitive == GL_TRIANGLES) { + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + mmesa->setup.dwgctl &= ~(0xf<<20); + if (state) + mmesa->setup.dwgctl |= mmesa->poly_stipple; + } + break; + + case GL_BLEND: + case GL_COLOR_LOGIC_OP: + updateBlendLogicOp( ctx ); + break; + + case GL_STENCIL_TEST: + MGA_STATECHANGE( mmesa, MGA_UPLOAD_CONTEXT ); + if (mmesa->hw_stencil) { + mmesa->hw.stencil_enable = ( state ) ? ~0 : 0; + } + else { + FALLBACK( ctx, MGA_FALLBACK_STENCIL, state ); + } + default: + break; + } +} + + +/* ============================================================= + */ + +static void mgaDDPrintDirty( const char *msg, GLuint state ) +{ + fprintf(stderr, "%s (0x%03x): %s%s%s%s%s%s%s\n", + msg, + (unsigned int) state, + (state & MGA_WAIT_AGE) ? "wait-age " : "", + (state & MGA_UPLOAD_TEX0IMAGE) ? "upload-tex0-img " : "", + (state & MGA_UPLOAD_TEX1IMAGE) ? "upload-tex1-img " : "", + (state & MGA_UPLOAD_CONTEXT) ? "upload-ctx " : "", + (state & MGA_UPLOAD_TEX0) ? "upload-tex0 " : "", + (state & MGA_UPLOAD_TEX1) ? "upload-tex1 " : "", + (state & MGA_UPLOAD_PIPE) ? "upload-pipe " : "" + ); +} + +/* Push the state into the sarea and/or texture memory. + */ +void mgaEmitHwStateLocked( mgaContextPtr mmesa ) +{ + drm_mga_sarea_t *sarea = mmesa->sarea; + GLcontext * ctx = mmesa->glCtx; + + if (MGA_DEBUG & DEBUG_VERBOSE_MSG) + mgaDDPrintDirty( __FUNCTION__, mmesa->dirty ); + + if (mmesa->dirty & MGA_UPLOAD_CONTEXT) { + mmesa->setup.wflag = _CULL_DISABLE; + if (mmesa->raster_primitive == GL_TRIANGLES) { + if ((ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT && + ctx->Texture.Unit[1]._ReallyEnabled == TEXTURE_2D_BIT)) { + mmesa->setup.wflag = mmesa->hw.cull_dualtex; + } + else { + mmesa->setup.wflag = mmesa->hw.cull; + } + } + + mmesa->setup.stencil = mmesa->hw.stencil + & mmesa->hw.stencil_enable; + mmesa->setup.stencilctl = mmesa->hw.stencilctl + & mmesa->hw.stencil_enable; + + /* If depth testing is not enabled, then use the no Z-compare / no + * Z-write mode. Otherwise, use whatever is set in hw.zmode. + */ + mmesa->setup.dwgctl &= (DC_zmode_MASK & DC_atype_MASK); + mmesa->setup.dwgctl |= (ctx->Depth.Test) + ? mmesa->hw.zmode : (DC_zmode_nozcmp | DC_atype_i); + + mmesa->setup.dwgctl &= DC_bop_MASK; + mmesa->setup.dwgctl |= (ctx->Color._LogicOpEnabled) + ? mmesa->hw.rop : mgarop_NoBLK[ GL_COPY & 0x0f ]; + + mmesa->setup.alphactrl &= AC_src_MASK & AC_dst_MASK & AC_atmode_MASK + & AC_atref_MASK & AC_alphasel_MASK; + mmesa->setup.alphactrl |= + (mmesa->hw.alpha_func & mmesa->hw.alpha_func_enable) | + (mmesa->hw.blend_func & mmesa->hw.blend_func_enable) | + ((AC_src_one | AC_dst_zero) & ~mmesa->hw.blend_func_enable) | + mmesa->hw.alpha_sel; + + memcpy( &sarea->context_state, &mmesa->setup, sizeof(mmesa->setup)); + } + + if ((mmesa->dirty & MGA_UPLOAD_TEX0) && mmesa->CurrentTexObj[0]) { + memcpy(&sarea->tex_state[0], + &mmesa->CurrentTexObj[0]->setup, + sizeof(sarea->tex_state[0])); + } + + if ((mmesa->dirty & MGA_UPLOAD_TEX1) && mmesa->CurrentTexObj[1]) { + memcpy(&sarea->tex_state[1], + &mmesa->CurrentTexObj[1]->setup, + sizeof(sarea->tex_state[1])); + } + + if (mmesa->dirty & (MGA_UPLOAD_TEX0 | MGA_UPLOAD_TEX1)) { + sarea->tex_state[0].texctl2 &= ~TMC_specen_enable; + sarea->tex_state[1].texctl2 &= ~TMC_specen_enable; + sarea->tex_state[0].texctl2 |= mmesa->hw.specen; + sarea->tex_state[1].texctl2 |= mmesa->hw.specen; + } + + if (mmesa->dirty & MGA_UPLOAD_PIPE) { +/* mmesa->sarea->wacceptseq = mmesa->hw_primitive; */ + mmesa->sarea->warp_pipe = mmesa->vertex_format; + mmesa->sarea->vertsize = mmesa->vertex_size; + } + + mmesa->sarea->dirty |= mmesa->dirty; + mmesa->dirty &= MGA_UPLOAD_CLIPRECTS; +} + +/* ============================================================= + */ + + +static void mgaDDValidateState( GLcontext *ctx ) +{ + mgaContextPtr mmesa = MGA_CONTEXT( ctx ); + + FLUSH_BATCH( mmesa ); + + if (mmesa->NewGLState & _NEW_TEXTURE) { + mgaUpdateTextureState(ctx); + } + + if (!mmesa->Fallback) { + if (mmesa->NewGLState & _MGA_NEW_RASTERSETUP) { + mgaChooseVertexState( ctx ); + } + + if (mmesa->NewGLState & _MGA_NEW_RENDERSTATE) { + mgaChooseRenderState( ctx ); + } + } + + mmesa->NewGLState = 0; +} + + +static void mgaDDInvalidateState( GLcontext *ctx, GLuint new_state ) +{ + _swrast_InvalidateState( ctx, new_state ); + _swsetup_InvalidateState( ctx, new_state ); + _ac_InvalidateState( ctx, new_state ); + _tnl_InvalidateState( ctx, new_state ); + MGA_CONTEXT(ctx)->NewGLState |= new_state; +} + + +static void mgaRunPipeline( GLcontext *ctx ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + if (mmesa->NewGLState) { + mgaDDValidateState( ctx ); + } + + if (mmesa->dirty) { + mgaEmitHwStateLocked( mmesa ); + } + + _tnl_run_pipeline( ctx ); +} + + +void mgaInitState( mgaContextPtr mmesa ) +{ + mgaScreenPrivate *mgaScreen = mmesa->mgaScreen; + GLcontext *ctx = mmesa->glCtx; + + if (ctx->Visual.doubleBufferMode) { + /* use back buffer by default */ + mmesa->draw_buffer = MGA_BACK; + mmesa->drawOffset = mmesa->mgaScreen->backOffset; + mmesa->readOffset = mmesa->mgaScreen->backOffset; + mmesa->setup.dstorg = mgaScreen->backOffset; + } else { + /* use front buffer by default */ + mmesa->draw_buffer = MGA_FRONT; + mmesa->drawOffset = mmesa->mgaScreen->frontOffset; + mmesa->readOffset = mmesa->mgaScreen->frontOffset; + mmesa->setup.dstorg = mgaScreen->frontOffset; + } + + mmesa->setup.maccess = (MA_memreset_disable | + MA_fogen_disable | + MA_tlutload_disable | + MA_nodither_disable | + MA_dit555_disable); + if (driQueryOptioni (&mmesa->optionCache, "color_reduction") != + DRI_CONF_COLOR_REDUCTION_DITHER) + mmesa->setup.maccess |= MA_nodither_enable; + + switch (mmesa->mgaScreen->cpp) { + case 2: + mmesa->setup.maccess |= MA_pwidth_16; + break; + case 4: + mmesa->setup.maccess |= MA_pwidth_32; + break; + default: + fprintf( stderr, "Error: unknown cpp %d, exiting...\n", + mmesa->mgaScreen->cpp ); + exit( 1 ); + } + + switch (mmesa->glCtx->Visual.depthBits) { + case 16: + mmesa->setup.maccess |= MA_zwidth_16; + break; + case 24: + mmesa->setup.maccess |= MA_zwidth_24; + break; + case 32: + mmesa->setup.maccess |= MA_zwidth_32; + break; + } + + mmesa->hw.blend_func = AC_src_one | AC_dst_zero; + mmesa->hw.blend_func_enable = 0; + mmesa->hw.alpha_func = AC_atmode_noacmp | MGA_FIELD( AC_atref, 0x00 ); + mmesa->hw.alpha_func_enable = 0; + mmesa->hw.rop = mgarop_NoBLK[ GL_COPY & 0x0f ]; + mmesa->hw.zmode = DC_zmode_zlt | DC_atype_zi; + mmesa->hw.stencil = MGA_FIELD( S_sref, 0x00) | MGA_FIELD( S_smsk, 0xff ) | + MGA_FIELD( S_swtmsk, 0xff ); + mmesa->hw.stencilctl = SC_smode_salways | SC_sfailop_keep + | SC_szfailop_keep | SC_szpassop_keep; + mmesa->hw.stencil_enable = 0; + mmesa->hw.cull = _CULL_DISABLE; + mmesa->hw.cull_dualtex = _CULL_DISABLE; + mmesa->hw.specen = 0; + mmesa->hw.alpha_sel = AC_alphasel_diffused; + + mmesa->setup.dwgctl = (DC_opcod_trap | + DC_linear_xy | + DC_solid_disable | + DC_arzero_disable | + DC_sgnzero_disable | + DC_shftzero_enable | + MGA_FIELD( DC_bop, 0xC ) | + MGA_FIELD( DC_trans, 0x0 ) | + DC_bltmod_bmonolef | + DC_pattern_disable | + DC_transc_disable | + DC_clipdis_disable); + + mmesa->setup.plnwt = ~0; + mmesa->setup.alphactrl = (AC_amode_alpha_channel | + AC_astipple_disable | + AC_aten_disable); + + mmesa->setup.fogcolor = PACK_COLOR_888((GLubyte)(ctx->Fog.Color[0]*255.0F), + (GLubyte)(ctx->Fog.Color[1]*255.0F), + (GLubyte)(ctx->Fog.Color[2]*255.0F)); + + mmesa->setup.wflag = 0; + mmesa->setup.tdualstage0 = 0; + mmesa->setup.tdualstage1 = 0; + mmesa->setup.fcol = 0; + mmesa->dirty |= MGA_UPLOAD_CONTEXT; + + mmesa->envcolor[0] = 0; + mmesa->envcolor[1] = 0; +} + + +void mgaDDInitStateFuncs( GLcontext *ctx ) +{ + ctx->Driver.UpdateState = mgaDDInvalidateState; + ctx->Driver.Enable = mgaDDEnable; + ctx->Driver.LightModelfv = mgaDDLightModelfv; + ctx->Driver.AlphaFunc = mgaDDAlphaFunc; + ctx->Driver.BlendEquationSeparate = mgaDDBlendEquationSeparate; + ctx->Driver.BlendFuncSeparate = mgaDDBlendFuncSeparate; + ctx->Driver.DepthFunc = mgaDDDepthFunc; + ctx->Driver.DepthMask = mgaDDDepthMask; + ctx->Driver.Fogfv = mgaDDFogfv; + ctx->Driver.Scissor = mgaDDScissor; + ctx->Driver.CullFace = mgaDDCullFaceFrontFace; + ctx->Driver.FrontFace = mgaDDCullFaceFrontFace; + ctx->Driver.ColorMask = mgaDDColorMask; + + ctx->Driver.DrawBuffer = mgaDDDrawBuffer; + ctx->Driver.ReadBuffer = mgaDDReadBuffer; + ctx->Driver.ClearColor = mgaDDClearColor; + ctx->Driver.ClearDepth = mgaDDClearDepth; + ctx->Driver.LogicOpcode = mgaDDLogicOp; + + ctx->Driver.PolygonStipple = mgaDDPolygonStipple; + + ctx->Driver.StencilFunc = mgaDDStencilFunc; + ctx->Driver.StencilMask = mgaDDStencilMask; + ctx->Driver.StencilOp = mgaDDStencilOp; + + ctx->Driver.DepthRange = mgaDepthRange; + ctx->Driver.Viewport = mgaViewport; + ctx->Driver.RenderMode = mgaRenderMode; + + ctx->Driver.ClearIndex = 0; + ctx->Driver.IndexMask = 0; + + /* Swrast hooks for imaging extensions: + */ + ctx->Driver.CopyColorTable = _swrast_CopyColorTable; + ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable; + ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D; + ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D; + + TNL_CONTEXT(ctx)->Driver.RunPipeline = mgaRunPipeline; +} |