/* * Copyright 2005 Eric Anholt * 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 * 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS 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: * Eric Anholt * */ #include "sis_context.h" #include "sis_state.h" #include "sis_tris.h" #include "sis_lock.h" #include "sis_tex.h" #include "sis_reg.h" #include "main/context.h" #include "main/colormac.h" #include "main/state.h" #include "swrast/swrast.h" #include "vbo/vbo.h" #include "tnl/tnl.h" #include "swrast_setup/swrast_setup.h" /* ============================================================= * Alpha blending */ static void sis6326DDAlphaFunc( struct gl_context *ctx, GLenum func, GLfloat ref ) { sisContextPtr smesa = SIS_CONTEXT(ctx); GLubyte refbyte; __GLSiSHardware *prev = &smesa->prev; __GLSiSHardware *current = &smesa->current; CLAMPED_FLOAT_TO_UBYTE(refbyte, ref); current->hwAlpha = refbyte << 16; /* Alpha Test function */ switch (func) { case GL_NEVER: current->hwAlpha |= S_ASET_PASS_NEVER; break; case GL_LESS: current->hwAlpha |= S_ASET_PASS_LESS; break; case GL_EQUAL: current->hwAlpha |= S_ASET_PASS_EQUAL; break; case GL_LEQUAL: current->hwAlpha |= S_ASET_PASS_LEQUAL; break; case GL_GREATER: current->hwAlpha |= S_ASET_PASS_GREATER; break; case GL_NOTEQUAL: current->hwAlpha |= S_ASET_PASS_NOTEQUAL; break; case GL_GEQUAL: current->hwAlpha |= S_ASET_PASS_GEQUAL; break; case GL_ALWAYS: current->hwAlpha |= S_ASET_PASS_ALWAYS; break; } prev->hwAlpha = current->hwAlpha; smesa->GlobalFlag |= GFLAG_ALPHASETTING; } static void sis6326DDBlendFuncSeparate( struct gl_context *ctx, GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorA, GLenum dfactorA ) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *prev = &smesa->prev; __GLSiSHardware *current = &smesa->current; current->hwDstSrcBlend = 0; switch (dfactorRGB) { case GL_ZERO: current->hwDstSrcBlend |= S_DBLEND_ZERO; break; case GL_ONE: current->hwDstSrcBlend |= S_DBLEND_ONE; break; case GL_SRC_COLOR: current->hwDstSrcBlend |= S_DBLEND_SRC_COLOR; break; case GL_ONE_MINUS_SRC_COLOR: current->hwDstSrcBlend |= S_DBLEND_INV_SRC_COLOR; break; case GL_SRC_ALPHA: current->hwDstSrcBlend |= S_DBLEND_SRC_ALPHA; break; case GL_ONE_MINUS_SRC_ALPHA: current->hwDstSrcBlend |= S_DBLEND_INV_SRC_ALPHA; break; case GL_DST_ALPHA: current->hwDstSrcBlend |= S_DBLEND_DST_ALPHA; break; case GL_ONE_MINUS_DST_ALPHA: current->hwDstSrcBlend |= S_DBLEND_INV_DST_ALPHA; break; } switch (sfactorRGB) { case GL_ZERO: current->hwDstSrcBlend |= S_SBLEND_ZERO; break; case GL_ONE: current->hwDstSrcBlend |= S_SBLEND_ONE; break; case GL_SRC_ALPHA: current->hwDstSrcBlend |= S_SBLEND_SRC_ALPHA; break; case GL_ONE_MINUS_SRC_ALPHA: current->hwDstSrcBlend |= S_SBLEND_INV_SRC_ALPHA; break; case GL_DST_ALPHA: current->hwDstSrcBlend |= S_SBLEND_DST_ALPHA; break; case GL_ONE_MINUS_DST_ALPHA: current->hwDstSrcBlend |= S_SBLEND_INV_DST_ALPHA; break; case GL_DST_COLOR: current->hwDstSrcBlend |= S_SBLEND_DST_COLOR; break; case GL_ONE_MINUS_DST_COLOR: current->hwDstSrcBlend |= S_SBLEND_INV_DST_COLOR; break; case GL_SRC_ALPHA_SATURATE: current->hwDstSrcBlend |= S_SBLEND_SRC_ALPHA_SAT; break; } if (current->hwDstSrcBlend != prev->hwDstSrcBlend) { prev->hwDstSrcBlend = current->hwDstSrcBlend; smesa->GlobalFlag |= GFLAG_DSTBLEND; } } /* ============================================================= * Depth testing */ static void sis6326DDDepthFunc( struct gl_context *ctx, GLenum func ) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *prev = &smesa->prev; __GLSiSHardware *current = &smesa->current; current->hwZ &= ~MASK_6326_ZTestMode; switch (func) { case GL_LESS: current->hwZ |= S_ZSET_PASS_LESS; break; case GL_GEQUAL: current->hwZ |= S_ZSET_PASS_GEQUAL; break; case GL_LEQUAL: current->hwZ |= S_ZSET_PASS_LEQUAL; break; case GL_GREATER: current->hwZ |= S_ZSET_PASS_GREATER; break; case GL_NOTEQUAL: current->hwZ |= S_ZSET_PASS_NOTEQUAL; break; case GL_EQUAL: current->hwZ |= S_ZSET_PASS_EQUAL; break; case GL_ALWAYS: current->hwZ |= S_ZSET_PASS_ALWAYS; break; case GL_NEVER: current->hwZ |= S_ZSET_PASS_NEVER; break; } if (current->hwZ != prev->hwZ) { prev->hwZ = current->hwZ; smesa->GlobalFlag |= GFLAG_ZSETTING; } } static void sis6326DDDepthMask( struct gl_context *ctx, GLboolean flag ) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *current = &smesa->current; if (ctx->Depth.Test) current->hwCapEnable |= S_ENABLE_ZWrite; else current->hwCapEnable &= ~S_ENABLE_ZWrite; } /* ============================================================= * Fog */ static void sis6326DDFogfv( struct gl_context *ctx, GLenum pname, const GLfloat *params ) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *current = &smesa->current; __GLSiSHardware *prev = &smesa->prev; GLint fogColor; switch(pname) { case GL_FOG_COLOR: fogColor = FLOAT_TO_UBYTE( ctx->Fog.Color[0] ) << 16; fogColor |= FLOAT_TO_UBYTE( ctx->Fog.Color[1] ) << 8; fogColor |= FLOAT_TO_UBYTE( ctx->Fog.Color[2] ); current->hwFog = 0x01000000 | fogColor; if (current->hwFog != prev->hwFog) { prev->hwFog = current->hwFog; smesa->GlobalFlag |= GFLAG_FOGSETTING; } break; } } /* ============================================================= * Clipping */ void sis6326UpdateClipping(struct gl_context *ctx) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *prev = &smesa->prev; __GLSiSHardware *current = &smesa->current; GLint x1, y1, x2, y2; x1 = 0; y1 = 0; x2 = smesa->width - 1; y2 = smesa->height - 1; if (ctx->Scissor.Enabled) { if (ctx->Scissor.X > x1) x1 = ctx->Scissor.X; if (ctx->Scissor.Y > y1) y1 = ctx->Scissor.Y; if (ctx->Scissor.X + ctx->Scissor.Width - 1 < x2) x2 = ctx->Scissor.X + ctx->Scissor.Width - 1; if (ctx->Scissor.Y + ctx->Scissor.Height - 1 < y2) y2 = ctx->Scissor.Y + ctx->Scissor.Height - 1; } y1 = Y_FLIP(y1); y2 = Y_FLIP(y2); /*current->clipTopBottom = (y2 << 13) | y1; current->clipLeftRight = (x1 << 13) | x2;*/ /* XXX */ current->clipTopBottom = (0 << 13) | smesa->height; current->clipLeftRight = (0 << 13) | smesa->width; if ((current->clipTopBottom != prev->clipTopBottom) || (current->clipLeftRight != prev->clipLeftRight)) { prev->clipTopBottom = current->clipTopBottom; prev->clipLeftRight = current->clipLeftRight; smesa->GlobalFlag |= GFLAG_CLIPPING; } } static void sis6326DDScissor( struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h ) { if (ctx->Scissor.Enabled) sis6326UpdateClipping( ctx ); } /* ============================================================= * Culling */ static void sis6326UpdateCull( struct gl_context *ctx ) { /* XXX culling */ } static void sis6326DDCullFace( struct gl_context *ctx, GLenum mode ) { sis6326UpdateCull( ctx ); } static void sis6326DDFrontFace( struct gl_context *ctx, GLenum mode ) { sis6326UpdateCull( ctx ); } /* ============================================================= * Masks */ static void sis6326DDColorMask( struct gl_context *ctx, GLboolean r, GLboolean g, GLboolean b, GLboolean a ) { sisContextPtr smesa = SIS_CONTEXT(ctx); if (r && g && b && ((ctx->Visual.alphaBits == 0) || a)) { FALLBACK(smesa, SIS_FALLBACK_WRITEMASK, 0); } else { FALLBACK(smesa, SIS_FALLBACK_WRITEMASK, 1); } } /* ============================================================= * Rendering attributes */ static void sis6326UpdateSpecular(struct gl_context *ctx) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *current = &smesa->current; if (_mesa_need_secondary_color(ctx)) current->hwCapEnable |= S_ENABLE_Specular; else current->hwCapEnable &= ~S_ENABLE_Specular; } static void sis6326DDLightModelfv(struct gl_context *ctx, GLenum pname, const GLfloat *param) { if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) { sis6326UpdateSpecular(ctx); } } static void sis6326DDShadeModel( struct gl_context *ctx, GLenum mode ) { sisContextPtr smesa = SIS_CONTEXT(ctx); /* Signal to sisRasterPrimitive to recalculate dwPrimitiveSet */ smesa->hw_primitive = -1; } /* ============================================================= * Window position */ /* ============================================================= * Viewport */ static void sis6326CalcViewport( struct gl_context *ctx ) { sisContextPtr smesa = SIS_CONTEXT(ctx); const GLfloat *v = ctx->Viewport._WindowMap.m; GLfloat *m = smesa->hw_viewport; /* See also sis_translate_vertex. */ m[MAT_SX] = v[MAT_SX]; m[MAT_TX] = v[MAT_TX] + SUBPIXEL_X; m[MAT_SY] = - v[MAT_SY]; m[MAT_TY] = - v[MAT_TY] + smesa->driDrawable->h + SUBPIXEL_Y; m[MAT_SZ] = v[MAT_SZ] * smesa->depth_scale; m[MAT_TZ] = v[MAT_TZ] * smesa->depth_scale; } static void sis6326DDViewport( struct gl_context *ctx, GLint x, GLint y, GLsizei width, GLsizei height ) { sis6326CalcViewport( ctx ); } static void sis6326DDDepthRange( struct gl_context *ctx, GLclampd nearval, GLclampd farval ) { sis6326CalcViewport( ctx ); } /* ============================================================= * Miscellaneous */ static void sis6326DDLogicOpCode( struct gl_context *ctx, GLenum opcode ) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *prev = &smesa->prev; __GLSiSHardware *current = &smesa->current; if (!ctx->Color.ColorLogicOpEnabled) return; current->hwDstSet &= ~MASK_ROP2; switch (opcode) { case GL_CLEAR: current->hwDstSet |= LOP_CLEAR; break; case GL_SET: current->hwDstSet |= LOP_SET; break; case GL_COPY: current->hwDstSet |= LOP_COPY; break; case GL_COPY_INVERTED: current->hwDstSet |= LOP_COPY_INVERTED; break; case GL_NOOP: current->hwDstSet |= LOP_NOOP; break; case GL_INVERT: current->hwDstSet |= LOP_INVERT; break; case GL_AND: current->hwDstSet |= LOP_AND; break; case GL_NAND: current->hwDstSet |= LOP_NAND; break; case GL_OR: current->hwDstSet |= LOP_OR; break; case GL_NOR: current->hwDstSet |= LOP_NOR; break; case GL_XOR: current->hwDstSet |= LOP_XOR; break; case GL_EQUIV: current->hwDstSet |= LOP_EQUIV; break; case GL_AND_REVERSE: current->hwDstSet |= LOP_AND_REVERSE; break; case GL_AND_INVERTED: current->hwDstSet |= LOP_AND_INVERTED; break; case GL_OR_REVERSE: current->hwDstSet |= LOP_OR_REVERSE; break; case GL_OR_INVERTED: current->hwDstSet |= LOP_OR_INVERTED; break; } if (current->hwDstSet != prev->hwDstSet) { prev->hwDstSet = current->hwDstSet; smesa->GlobalFlag |= GFLAG_DESTSETTING; } } void sis6326DDDrawBuffer( struct gl_context *ctx, GLenum mode ) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *prev = &smesa->prev; __GLSiSHardware *current = &smesa->current; if(getenv("SIS_DRAW_FRONT")) ctx->DrawBuffer->_ColorDrawBufferIndexes[0] = BUFFER_FRONT_LEFT; if (ctx->DrawBuffer->_NumColorDrawBuffers > 1) { FALLBACK( smesa, SIS_FALLBACK_DRAW_BUFFER, GL_TRUE ); return; } current->hwDstSet &= ~MASK_DstBufferPitch; switch ( ctx->DrawBuffer->_ColorDrawBufferIndexes[0] ) { case BUFFER_FRONT_LEFT: current->hwOffsetDest = smesa->front.offset; current->hwDstSet |= smesa->front.pitch; FALLBACK( smesa, SIS_FALLBACK_DRAW_BUFFER, GL_FALSE ); break; case BUFFER_BACK_LEFT: current->hwOffsetDest = smesa->back.offset; current->hwDstSet |= smesa->back.pitch; FALLBACK( smesa, SIS_FALLBACK_DRAW_BUFFER, GL_FALSE ); break; default: FALLBACK( smesa, SIS_FALLBACK_DRAW_BUFFER, GL_TRUE ); return; } if (current->hwDstSet != prev->hwDstSet) { prev->hwDstSet = current->hwDstSet; smesa->GlobalFlag |= GFLAG_DESTSETTING; } if (current->hwOffsetDest != prev->hwOffsetDest) { prev->hwOffsetDest = current->hwOffsetDest; smesa->GlobalFlag |= GFLAG_DESTSETTING; } } /* ============================================================= * Polygon stipple */ /* ============================================================= * Render mode */ /* ============================================================= * State enable/disable */ static void sis6326DDEnable( struct gl_context *ctx, GLenum cap, GLboolean state ) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *current = &smesa->current; switch (cap) { case GL_ALPHA_TEST: if (state) current->hwCapEnable |= S_ENABLE_AlphaTest; else current->hwCapEnable &= ~S_ENABLE_AlphaTest; break; case GL_BLEND: /* TODO: */ if (state) /* if (state & !ctx->Color.ColorLogicOpEnabled) */ current->hwCapEnable |= S_ENABLE_Blend; else current->hwCapEnable &= ~S_ENABLE_Blend; break; case GL_CULL_FACE: /* XXX culling */ break; case GL_DEPTH_TEST: if (state && smesa->depth.offset != 0) current->hwCapEnable |= S_ENABLE_ZTest; else current->hwCapEnable &= ~S_ENABLE_ZTest; sis6326DDDepthMask( ctx, ctx->Depth.Mask ); break; case GL_DITHER: if (state) current->hwCapEnable |= S_ENABLE_Dither; else current->hwCapEnable &= ~S_ENABLE_Dither; break; case GL_FOG: if (state) current->hwCapEnable |= S_ENABLE_Fog; else current->hwCapEnable &= ~S_ENABLE_Fog; break; case GL_COLOR_LOGIC_OP: if (state) sis6326DDLogicOpCode( ctx, ctx->Color.LogicOp ); else sis6326DDLogicOpCode( ctx, GL_COPY ); break; case GL_SCISSOR_TEST: sis6326UpdateClipping( ctx ); break; case GL_STENCIL_TEST: if (state) { FALLBACK(smesa, SIS_FALLBACK_STENCIL, 1); } else { FALLBACK(smesa, SIS_FALLBACK_STENCIL, 0); } break; case GL_LIGHTING: case GL_COLOR_SUM_EXT: sis6326UpdateSpecular(ctx); break; } } /* ============================================================= * State initialization, management */ /* Called before beginning of rendering. */ void sis6326UpdateHWState( struct gl_context *ctx ) { sisContextPtr smesa = SIS_CONTEXT(ctx); __GLSiSHardware *prev = &smesa->prev; __GLSiSHardware *current = &smesa->current; if (smesa->NewGLState & _NEW_TEXTURE) sisUpdateTextureState( ctx ); if (current->hwCapEnable ^ prev->hwCapEnable) { prev->hwCapEnable = current->hwCapEnable; smesa->GlobalFlag |= GFLAG_ENABLESETTING; } if (smesa->GlobalFlag & GFLAG_RENDER_STATES) sis_update_render_state( smesa ); if (smesa->GlobalFlag & GFLAG_TEXTURE_STATES) sis_update_texture_state( smesa ); } static void sis6326DDInvalidateState( struct gl_context *ctx, GLuint new_state ) { sisContextPtr smesa = SIS_CONTEXT(ctx); _swrast_InvalidateState( ctx, new_state ); _swsetup_InvalidateState( ctx, new_state ); _vbo_InvalidateState( ctx, new_state ); _tnl_InvalidateState( ctx, new_state ); smesa->NewGLState |= new_state; } /* Initialize the context's hardware state. */ void sis6326DDInitState( sisContextPtr smesa ) { __GLSiSHardware *prev = &smesa->prev; __GLSiSHardware *current = &smesa->current; struct gl_context *ctx = smesa->glCtx; /* add Texture Perspective Enable */ current->hwCapEnable = S_ENABLE_TextureCache | S_ENABLE_TexturePerspective | S_ENABLE_Dither; /* Z test mode is LESS */ current->hwZ = S_ZSET_PASS_LESS | S_ZSET_FORMAT_16; if (ctx->Visual.depthBits > 0) current->hwCapEnable |= S_ENABLE_ZWrite; /* Alpha test mode is ALWAYS, alpha ref value is 0 */ current->hwAlpha = S_ASET_PASS_ALWAYS; /* ROP2 is COPYPEN */ current->hwDstSet = LOP_COPY; /* LinePattern is 0, Repeat Factor is 0 */ current->hwLinePattern = 0x00008000; /* Src blend is BLEND_ONE, Dst blend is D3DBLEND_ZERO */ current->hwDstSrcBlend = S_SBLEND_ONE | S_DBLEND_ZERO; switch (smesa->bytesPerPixel) { case 2: current->hwDstSet |= DST_FORMAT_RGB_565; break; case 4: current->hwDstSet |= DST_FORMAT_ARGB_8888; break; } smesa->depth_scale = 1.0 / (GLfloat)0xffff; smesa->clearTexCache = GL_TRUE; smesa->clearColorPattern = 0; sis6326UpdateZPattern(smesa, 1.0); sis6326UpdateCull(ctx); /* Set initial fog settings. Start and end are the same case. */ sis6326DDFogfv( ctx, GL_FOG_DENSITY, &ctx->Fog.Density ); sis6326DDFogfv( ctx, GL_FOG_END, &ctx->Fog.End ); sis6326DDFogfv( ctx, GL_FOG_MODE, NULL ); memcpy(prev, current, sizeof(__GLSiSHardware)); } /* Initialize the driver's state functions. */ void sis6326DDInitStateFuncs( struct gl_context *ctx ) { ctx->Driver.UpdateState = sis6326DDInvalidateState; ctx->Driver.Clear = sis6326DDClear; ctx->Driver.ClearColor = sis6326DDClearColor; ctx->Driver.ClearDepth = sis6326DDClearDepth; ctx->Driver.AlphaFunc = sis6326DDAlphaFunc; ctx->Driver.BlendFuncSeparate = sis6326DDBlendFuncSeparate; ctx->Driver.ColorMask = sis6326DDColorMask; ctx->Driver.CullFace = sis6326DDCullFace; ctx->Driver.DepthMask = sis6326DDDepthMask; ctx->Driver.DepthFunc = sis6326DDDepthFunc; ctx->Driver.DepthRange = sis6326DDDepthRange; ctx->Driver.DrawBuffer = sis6326DDDrawBuffer; ctx->Driver.Enable = sis6326DDEnable; ctx->Driver.FrontFace = sis6326DDFrontFace; ctx->Driver.Fogfv = sis6326DDFogfv; ctx->Driver.LogicOpcode = sis6326DDLogicOpCode; ctx->Driver.Scissor = sis6326DDScissor; ctx->Driver.ShadeModel = sis6326DDShadeModel; ctx->Driver.LightModelfv = sis6326DDLightModelfv; ctx->Driver.Viewport = sis6326DDViewport; }