From 41b58954e1742493452b91d9ecdb761db5de3bed Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Thu, 10 Jun 2004 12:48:07 +0000 Subject: New driver for i915 as well as older i830/i845/i865 chipsets. --- src/mesa/drivers/dri/i915/i915_state.c | 1073 ++++++++++++++++++++++++++++++++ 1 file changed, 1073 insertions(+) create mode 100644 src/mesa/drivers/dri/i915/i915_state.c (limited to 'src/mesa/drivers/dri/i915/i915_state.c') diff --git a/src/mesa/drivers/dri/i915/i915_state.c b/src/mesa/drivers/dri/i915/i915_state.c new file mode 100644 index 0000000000..d6c3e90d96 --- /dev/null +++ b/src/mesa/drivers/dri/i915/i915_state.c @@ -0,0 +1,1073 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + **************************************************************************/ + + +#include "glheader.h" +#include "context.h" +#include "macros.h" +#include "enums.h" +#include "dd.h" +#include "tnl/tnl.h" +#include "tnl/t_context.h" + +#include "texmem.h" + +#include "intel_screen.h" +#include "intel_batchbuffer.h" + +#include "i915_context.h" +#include "i915_reg.h" + +static int translate_compare_func( GLenum func ) +{ + switch(func) { + case GL_NEVER: + return COMPAREFUNC_NEVER; + case GL_LESS: + return COMPAREFUNC_LESS; + case GL_LEQUAL: + return COMPAREFUNC_LEQUAL; + case GL_GREATER: + return COMPAREFUNC_GREATER; + case GL_GEQUAL: + return COMPAREFUNC_GEQUAL; + case GL_NOTEQUAL: + return COMPAREFUNC_NOTEQUAL; + case GL_EQUAL: + return COMPAREFUNC_EQUAL; + case GL_ALWAYS: + default: + return COMPAREFUNC_ALWAYS; + } +} + + +static void i915StencilFunc(GLcontext *ctx, GLenum func, GLint ref, + GLuint mask) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + int test = translate_compare_func( func ); + + mask = mask & 0xff; + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s : func: %s, ref : 0x%x, mask: 0x%x\n", __FUNCTION__, + _mesa_lookup_enum_by_nr(func), ref, mask); + + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_TEST_MASK; + i915->state.Ctx[I915_CTXREG_STATE4] |= (ENABLE_STENCIL_TEST_MASK | + STENCIL_TEST_MASK(mask)); + + i915->state.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_REF_MASK | + S5_STENCIL_TEST_FUNC_MASK); + + i915->state.Ctx[I915_CTXREG_LIS5] |= ((ref << S5_STENCIL_REF_SHIFT) | + (test << S5_STENCIL_TEST_FUNC_SHIFT)); +} + +static void i915StencilMask(GLcontext *ctx, GLuint mask) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s : mask 0x%x\n", __FUNCTION__, mask); + + mask = mask & 0xff; + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_WRITE_MASK; + i915->state.Ctx[I915_CTXREG_STATE4] |= (ENABLE_STENCIL_WRITE_MASK | + STENCIL_WRITE_MASK(mask)); +} + +static int translate_stencil_op( GLenum op ) +{ + switch(op) { + case GL_KEEP: + return STENCILOP_KEEP; + case GL_ZERO: + return STENCILOP_ZERO; + case GL_REPLACE: + return STENCILOP_REPLACE; + case GL_INCR: + return STENCILOP_INCRSAT; + case GL_DECR: + return STENCILOP_DECRSAT; + case GL_INCR_WRAP: + return STENCILOP_INCR; + case GL_DECR_WRAP: + return STENCILOP_DECR; + case GL_INVERT: + return STENCILOP_INVERT; + default: + return 0; + } +} + +static void i915StencilOp(GLcontext *ctx, GLenum fail, GLenum zfail, + GLenum zpass) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + int fop = translate_stencil_op(fail); + int dfop = translate_stencil_op(zfail); + int dpop = translate_stencil_op(zpass); + + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s: fail : %s, zfail: %s, zpass : %s\n", __FUNCTION__, + _mesa_lookup_enum_by_nr(fail), + _mesa_lookup_enum_by_nr(zfail), + _mesa_lookup_enum_by_nr(zpass)); + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + + i915->state.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_FAIL_MASK | + S5_STENCIL_PASS_Z_FAIL_MASK | + S5_STENCIL_PASS_Z_PASS_MASK); + + i915->state.Ctx[I915_CTXREG_LIS5] |= ((fop << S5_STENCIL_FAIL_SHIFT) | + (dfop << S5_STENCIL_PASS_Z_FAIL_SHIFT) | + (dpop << S5_STENCIL_PASS_Z_PASS_SHIFT)); +} + +static void i915AlphaFunc(GLcontext *ctx, GLenum func, GLfloat ref) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + int test = translate_compare_func( func ); + GLubyte refByte; + + UNCLAMPED_FLOAT_TO_UBYTE(refByte, ref); + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_LIS6] &= ~(S6_ALPHA_TEST_FUNC_MASK | + S6_ALPHA_REF_MASK); + i915->state.Ctx[I915_CTXREG_LIS6] |= ((test << S6_ALPHA_TEST_FUNC_SHIFT) | + (((GLuint)refByte) << S6_ALPHA_REF_SHIFT)); +} + +/* This function makes sure that the proper enables are + * set for LogicOp, Independant Alpha Blend, and Blending. + * It needs to be called from numerous places where we + * could change the LogicOp or Independant Alpha Blend without subsequent + * calls to glEnable. + */ +static void i915EvalLogicOpBlendState(GLcontext *ctx) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + + if (ctx->Color._LogicOpEnabled) { + i915->state.Ctx[I915_CTXREG_LIS5] |= S5_LOGICOP_ENABLE; + i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_CBUF_BLEND_ENABLE; + } else { + i915->state.Ctx[I915_CTXREG_LIS5] &= ~S5_LOGICOP_ENABLE; + + if (ctx->Color.BlendEnabled) { + i915->state.Ctx[I915_CTXREG_LIS6] |= S6_CBUF_BLEND_ENABLE; + } else { + i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_CBUF_BLEND_ENABLE; + } + } +} + +static void i915BlendColor(GLcontext *ctx, const GLfloat color[4]) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + GLubyte r, g, b, a; + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s\n", __FUNCTION__); + + UNCLAMPED_FLOAT_TO_UBYTE(r, color[RCOMP]); + UNCLAMPED_FLOAT_TO_UBYTE(g, color[GCOMP]); + UNCLAMPED_FLOAT_TO_UBYTE(b, color[BCOMP]); + UNCLAMPED_FLOAT_TO_UBYTE(a, color[ACOMP]); + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_BLENDCOLOR1] = (a<<24) | (r<<16) | (g<<8) | b; +} + +static int translate_blend_factor( GLenum factor ) +{ + switch(factor) { + case GL_ZERO: + return BLENDFACT_ZERO; + case GL_SRC_ALPHA: + return BLENDFACT_SRC_ALPHA; + case GL_ONE: + return BLENDFACT_ONE; + case GL_SRC_COLOR: + return BLENDFACT_SRC_COLR; + case GL_ONE_MINUS_SRC_COLOR: + return BLENDFACT_INV_SRC_COLR; + case GL_DST_COLOR: + return BLENDFACT_DST_COLR; + case GL_ONE_MINUS_DST_COLOR: + return BLENDFACT_INV_DST_COLR; + case GL_ONE_MINUS_SRC_ALPHA: + return BLENDFACT_INV_SRC_ALPHA; + case GL_DST_ALPHA: + return BLENDFACT_DST_ALPHA; + case GL_ONE_MINUS_DST_ALPHA: + return BLENDFACT_INV_DST_ALPHA; + case GL_SRC_ALPHA_SATURATE: + return BLENDFACT_SRC_ALPHA_SATURATE; + case GL_CONSTANT_COLOR: + return BLENDFACT_CONST_COLOR; + case GL_ONE_MINUS_CONSTANT_COLOR: + return BLENDFACT_INV_CONST_COLOR; + case GL_CONSTANT_ALPHA: + return BLENDFACT_CONST_ALPHA; + case GL_ONE_MINUS_CONSTANT_ALPHA: + return BLENDFACT_INV_CONST_ALPHA; + default: + return BLENDFACT_ZERO; + } +} + +#define DST_BLND_FACT(f) ((f)<state.Ctx[I915_CTXREG_IAB] & + ~(IAB_SRC_FACTOR_MASK | + IAB_DST_FACTOR_MASK | + (BLENDFUNC_MASK << IAB_FUNC_SHIFT) | + IAB_ENABLE)); + + GLuint lis6 = (i915->state.Ctx[I915_CTXREG_LIS6] & + ~(S6_CBUF_SRC_BLEND_FACT_MASK | + S6_CBUF_DST_BLEND_FACT_MASK | + S6_CBUF_BLEND_FUNC_MASK)); + + GLuint eqRGB = ctx->Color.BlendEquationRGB; + GLuint eqA = ctx->Color.BlendEquationA; + GLuint srcRGB = ctx->Color.BlendSrcRGB; + GLuint dstRGB = ctx->Color.BlendDstRGB; + GLuint srcA = ctx->Color.BlendSrcA; + GLuint dstA = ctx->Color.BlendDstA; + + if (eqRGB == GL_MIN || eqRGB == GL_MAX) { + srcRGB = dstRGB = GL_ONE; + } + + if (eqA == GL_MIN || eqA == GL_MAX) { + srcA = dstA = GL_ONE; + } + + lis6 |= SRC_BLND_FACT(translate_blend_factor(srcRGB)); + lis6 |= DST_BLND_FACT(translate_blend_factor(dstRGB)); + lis6 |= translate_blend_equation( eqRGB ) << S6_CBUF_BLEND_FUNC_SHIFT; + + iab |= SRC_ABLND_FACT(translate_blend_factor(srcA)); + iab |= DST_ABLND_FACT(translate_blend_factor(dstA)); + iab |= translate_blend_equation( eqA ) << IAB_FUNC_SHIFT; + + if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) + iab |= IAB_ENABLE; + + if (iab != i915->state.Ctx[I915_CTXREG_IAB] || + lis6 != i915->state.Ctx[I915_CTXREG_LIS6]) { + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_IAB] = iab; + i915->state.Ctx[I915_CTXREG_LIS6] = lis6; + } + + /* This will catch a logicop blend equation */ + i915EvalLogicOpBlendState(ctx); +} + + +static void i915BlendFuncSeparate(GLcontext *ctx, GLenum srcRGB, + GLenum dstRGB, GLenum srcA, + GLenum dstA ) +{ + i915UpdateBlendState( ctx ); +} + + +static void i915BlendEquationSeparate(GLcontext *ctx, GLenum eqRGB, + GLenum eqA) +{ + i915UpdateBlendState( ctx ); +} + + +static void i915DepthFunc(GLcontext *ctx, GLenum func) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + int test = translate_compare_func( func ); + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s\n", __FUNCTION__); + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_DEPTH_TEST_FUNC_MASK; + i915->state.Ctx[I915_CTXREG_LIS6] |= test << S6_DEPTH_TEST_FUNC_SHIFT; +} + +static void i915DepthMask(GLcontext *ctx, GLboolean flag) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s flag (%d)\n", __FUNCTION__, flag); + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + + if (flag && ctx->Depth.Test) + i915->state.Ctx[I915_CTXREG_LIS6] |= S6_DEPTH_WRITE_ENABLE; + else + i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_DEPTH_WRITE_ENABLE; +} + +/* ============================================================= + * Polygon stipple + * + * The i915 supports a 4x4 stipple natively, GL wants 32x32. + * Fortunately stipple is usually a repeating pattern. + */ +static void i915PolygonStipple( GLcontext *ctx, const GLubyte *mask ) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + const GLubyte *m = mask; + GLubyte p[4]; + int i,j,k; + int active = (ctx->Polygon.StippleFlag && + i915->intel.reduced_primitive == GL_TRIANGLES); + GLuint newMask; + + if (active) { + I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE); + i915->state.Stipple[I915_STPREG_ST1] &= ~ST1_ENABLE; + } + + p[0] = mask[12] & 0xf; p[0] |= p[0] << 4; + p[1] = mask[8] & 0xf; p[1] |= p[1] << 4; + p[2] = mask[4] & 0xf; p[2] |= p[2] << 4; + p[3] = mask[0] & 0xf; p[3] |= p[3] << 4; + + for (k = 0 ; k < 8 ; k++) + for (j = 3 ; j >= 0; j--) + for (i = 0 ; i < 4 ; i++, m++) + if (*m != p[j]) { + i915->intel.hw_stipple = 0; + return; + } + + newMask = (((p[0] & 0xf) << 0) | + ((p[1] & 0xf) << 4) | + ((p[2] & 0xf) << 8) | + ((p[3] & 0xf) << 12)); + + + if (newMask == 0xffff || newMask == 0x0) { + /* this is needed to make conform pass */ + i915->intel.hw_stipple = 0; + return; + } + + i915->state.Stipple[I915_STPREG_ST1] &= ~0xffff; + i915->state.Stipple[I915_STPREG_ST1] |= newMask; + i915->intel.hw_stipple = 1; + + if (active) + i915->state.Stipple[I915_STPREG_ST1] |= ST1_ENABLE; +} + + +/* ============================================================= + * Hardware clipping + */ +static void i915Scissor(GLcontext *ctx, GLint x, GLint y, + GLsizei w, GLsizei h) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + intelScreenPrivate *screen = i915->intel.intelScreen; + int x1, y1, x2, y2; + + if (!i915->intel.driDrawable) + return; + + x1 = x; + y1 = i915->intel.driDrawable->h - (y + h); + x2 = x + w - 1; + y2 = y1 + h - 1; + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "[%s] x(%d) y(%d) w(%d) h(%d)\n", __FUNCTION__, + x, y, w, h); + + if (x1 < 0) x1 = 0; + if (y1 < 0) y1 = 0; + if (x2 < 0) x2 = 0; + if (y2 < 0) y2 = 0; + + if (x2 >= screen->width) x2 = screen->width-1; + if (y2 >= screen->height) y2 = screen->height-1; + if (x1 >= screen->width) x1 = screen->width-1; + if (y1 >= screen->height) y1 = screen->height-1; + + + I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS); + i915->state.Buffer[I915_DESTREG_SR1] = (y1 << 16) | (x1 & 0xffff); + i915->state.Buffer[I915_DESTREG_SR2] = (y2 << 16) | (x2 & 0xffff); +} + +static void i915LogicOp(GLcontext *ctx, GLenum opcode) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + int tmp = 0; + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s\n", __FUNCTION__); + + switch(opcode) { + case GL_CLEAR: + tmp = LOGICOP_CLEAR; + break; + case GL_AND: + tmp = LOGICOP_AND; + break; + case GL_AND_REVERSE: + tmp = LOGICOP_AND_RVRSE; + break; + case GL_COPY: + tmp = LOGICOP_COPY; + break; + case GL_COPY_INVERTED: + tmp = LOGICOP_COPY_INV; + break; + case GL_AND_INVERTED: + tmp = LOGICOP_AND_INV; + break; + case GL_NOOP: + tmp = LOGICOP_NOOP; + break; + case GL_XOR: + tmp = LOGICOP_XOR; + break; + case GL_OR: + tmp = LOGICOP_OR; + break; + case GL_OR_INVERTED: + tmp = LOGICOP_OR_INV; + break; + case GL_NOR: + tmp = LOGICOP_NOR; + break; + case GL_EQUIV: + tmp = LOGICOP_EQUIV; + break; + case GL_INVERT: + tmp = LOGICOP_INV; + break; + case GL_OR_REVERSE: + tmp = LOGICOP_OR_RVRSE; + break; + case GL_NAND: + tmp = LOGICOP_NAND; + break; + case GL_SET: + tmp = LOGICOP_SET; + break; + default: + return; + } + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_STATE4] &= ~LOGICOP_MASK; + i915->state.Ctx[I915_CTXREG_STATE4] |= LOGIC_OP_FUNC(tmp); +} + + + +static void i915CullFaceFrontFace(GLcontext *ctx, GLenum unused) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + GLuint mode; + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s\n", __FUNCTION__); + + if (!ctx->Polygon.CullFlag) { + mode = S4_CULLMODE_NONE; + } + else if (ctx->Polygon.CullFaceMode != GL_FRONT_AND_BACK) { + mode = S4_CULLMODE_CW; + + if (ctx->Polygon.CullFaceMode == GL_FRONT) + mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW); + if (ctx->Polygon.FrontFace != GL_CCW) + mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW); + } + else { + mode = S4_CULLMODE_BOTH; + } + + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_LIS4] &= ~S4_CULLMODE_MASK; + i915->state.Ctx[I915_CTXREG_LIS4] |= mode; +} + +static void i915LineWidth( GLcontext *ctx, GLfloat widthf ) +{ + i915ContextPtr i915 = I915_CONTEXT( ctx ); + int lis4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_LINE_WIDTH_MASK; + int width; + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s\n", __FUNCTION__); + + width = (int)(widthf * 2); + CLAMP_SELF(width, 1, 0xf); + lis4 |= width << S4_LINE_WIDTH_SHIFT; + + if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) { + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_LIS4] = lis4; + } +} + +static void i915PointSize(GLcontext *ctx, GLfloat size) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + int lis4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_POINT_WIDTH_MASK; + GLint point_size = (int)size; + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s\n", __FUNCTION__); + + CLAMP_SELF(point_size, 1, 255); + lis4 |= point_size << S4_POINT_WIDTH_SHIFT; + + if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) { + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_LIS4] = lis4; + } +} + + +/* ============================================================= + * Color masks + */ + +static void i915ColorMask(GLcontext *ctx, + GLboolean r, GLboolean g, + GLboolean b, GLboolean a) +{ + i915ContextPtr i915 = I915_CONTEXT( ctx ); + GLuint tmp = i915->state.Ctx[I915_CTXREG_LIS5] & ~S5_WRITEDISABLE_MASK; + + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__, r, g, b, a); + + if (!r) tmp |= S5_WRITEDISABLE_RED; + if (!g) tmp |= S5_WRITEDISABLE_GREEN; + if (!b) tmp |= S5_WRITEDISABLE_BLUE; + if (!a) tmp |= S5_WRITEDISABLE_ALPHA; + + if (tmp != i915->state.Ctx[I915_CTXREG_LIS5]) { + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + i915->state.Ctx[I915_CTXREG_LIS5] = tmp; + } +} + +static void update_specular( GLcontext *ctx ) +{ + /* A hack to trigger the rebuild of the fragment program. + */ + INTEL_CONTEXT(ctx)->NewGLState |= _NEW_TEXTURE; + I915_CONTEXT(ctx)->tex_program.translated = 0; +} + +static void i915LightModelfv(GLcontext *ctx, GLenum pname, + const GLfloat *param) +{ + if (INTEL_DEBUG&DEBUG_DRI) + fprintf(stderr, "%s\n", __FUNCTION__); + + if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) { + update_specular( ctx ); + } +} + +static void i915ShadeModel(GLcontext *ctx, GLenum mode) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + + if (mode == GL_SMOOTH) { + i915->state.Ctx[I915_CTXREG_LIS4] &= ~(S4_FLATSHADE_ALPHA | + S4_FLATSHADE_COLOR | + S4_FLATSHADE_SPECULAR); + } else { + i915->state.Ctx[I915_CTXREG_LIS4] |= (S4_FLATSHADE_ALPHA | + S4_FLATSHADE_COLOR | + S4_FLATSHADE_SPECULAR); + } +} + +/* ============================================================= + * Fog + */ +static void update_fog( GLcontext *ctx ) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + GLenum mode; + GLboolean enabled; + GLboolean try_pixel_fog; + + if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) { + /* Pull in static fog state from program */ + + mode = ctx->FragmentProgram.Current->FogOption; + enabled = (mode != GL_NONE); + try_pixel_fog = 1; + } + else { + enabled = ctx->Fog.Enabled; + mode = ctx->Fog.Mode; + + try_pixel_fog = (ctx->Fog.FogCoordinateSource == GL_FRAGMENT_DEPTH_EXT && + ctx->Hint.Fog == GL_NICEST && + 0); /* XXX - DISABLE -- Need ortho fallback */ + } + + if (!enabled) { + i915->vertex_fog = I915_FOG_NONE; + } + else if (try_pixel_fog) { + + I915_STATECHANGE(i915, I915_UPLOAD_FOG); + i915->state.Fog[I915_FOGREG_MODE1] &= ~FMC1_FOGFUNC_MASK; + i915->vertex_fog = I915_FOG_PIXEL; + + switch (mode) { + case GL_LINEAR: + if (ctx->Fog.End <= ctx->Fog.Start) { + /* XXX - this won't work with fragment programs. Need to + * either fallback or append fog instructions to end of + * program in the case of linear fog. + */ + i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_VERTEX; + i915->vertex_fog = I915_FOG_VERTEX; + } + else { + GLfloat c1 = ctx->Fog.End/(ctx->Fog.End-ctx->Fog.Start); + GLfloat c2 = 1.0/(ctx->Fog.End-ctx->Fog.Start); + + i915->state.Fog[I915_FOGREG_MODE1] &= ~FMC1_C1_MASK; + i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_PIXEL_LINEAR; + i915->state.Fog[I915_FOGREG_MODE1] |= + ((GLuint)(c1 * FMC1_C1_ONE)) & FMC1_C1_MASK; + + if (i915->state.Fog[I915_FOGREG_MODE1] & FMC1_FOGINDEX_Z) { + i915->state.Fog[I915_FOGREG_MODE2] = (GLuint)(c2 * FMC2_C2_ONE); + } + else { + union { float f; int i; } fi; + fi.f = c2; + i915->state.Fog[I915_FOGREG_MODE2] = fi.i; + } + } + break; + case GL_EXP: + i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_PIXEL_EXP; + break; + case GL_EXP2: + i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_PIXEL_EXP2; + break; + default: + break; + } + } + else /* if (i915->vertex_fog != I915_FOG_VERTEX) */ { + I915_STATECHANGE(i915, I915_UPLOAD_FOG); + i915->state.Fog[I915_FOGREG_MODE1] &= ~FMC1_FOGFUNC_MASK; + i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_VERTEX; + i915->vertex_fog = I915_FOG_VERTEX; + } + + { + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + I915_ACTIVESTATE(i915, I915_UPLOAD_FOG, enabled); + if (enabled) + i915->state.Ctx[I915_CTXREG_LIS5] |= S5_FOG_ENABLE; + else + i915->state.Ctx[I915_CTXREG_LIS5] &= ~S5_FOG_ENABLE; + } + + if (enabled) { + _tnl_allow_vertex_fog( ctx, (i915->vertex_fog == I915_FOG_VERTEX) ); + _tnl_allow_pixel_fog( ctx, (i915->vertex_fog != I915_FOG_VERTEX) ); + } +} + +static void i915Fogfv(GLcontext *ctx, GLenum pname, const GLfloat *param) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + + switch (pname) { + case GL_FOG_COORDINATE_SOURCE_EXT: + case GL_FOG_MODE: + case GL_FOG_START: + case GL_FOG_END: + update_fog( ctx ); + break; + + case GL_FOG_DENSITY: + I915_STATECHANGE(i915, I915_UPLOAD_FOG); + + if (i915->state.Fog[I915_FOGREG_MODE1] & FMC1_FOGINDEX_Z) { + i915->state.Fog[I915_FOGREG_MODE3] = (GLuint)(ctx->Fog.Density * + FMC3_D_ONE); + } + else { + union { float f; int i; } fi; + fi.f = ctx->Fog.Density; + i915->state.Fog[I915_FOGREG_MODE3] = fi.i; + } + break; + + case GL_FOG_COLOR: + I915_STATECHANGE(i915, I915_UPLOAD_FOG); + i915->state.Fog[I915_FOGREG_COLOR] = + (_3DSTATE_FOG_COLOR_CMD | + ((GLubyte)(ctx->Fog.Color[0]*255.0F) << 16) | + ((GLubyte)(ctx->Fog.Color[1]*255.0F) << 8) | + ((GLubyte)(ctx->Fog.Color[2]*255.0F) << 0)); + break; + + default: + break; + } +} + +static void i915Hint(GLcontext *ctx, GLenum target, GLenum state) +{ + switch (target) { + case GL_FOG_HINT: + update_fog( ctx ); + break; + default: + break; + } +} + +/* ============================================================= + */ + +static void i915Enable(GLcontext *ctx, GLenum cap, GLboolean state) +{ + i915ContextPtr i915 = I915_CONTEXT(ctx); + + switch(cap) { + case GL_TEXTURE_2D: + break; + + case GL_LIGHTING: + case GL_COLOR_SUM: + update_specular( ctx ); + break; + + case GL_ALPHA_TEST: + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + if (state) + i915->state.Ctx[I915_CTXREG_LIS6] |= S6_ALPHA_TEST_ENABLE; + else + i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_ALPHA_TEST_ENABLE; + break; + + case GL_BLEND: + i915EvalLogicOpBlendState(ctx); + break; + + case GL_COLOR_LOGIC_OP: + i915EvalLogicOpBlendState(ctx); + + /* Logicop doesn't seem to work at 16bpp: + */ + if (i915->intel.intelScreen->cpp == 2) + FALLBACK( &i915->intel, I915_FALLBACK_LOGICOP, state ); + break; + + case GL_FRAGMENT_PROGRAM_ARB: + update_fog( ctx ); + break; + + case GL_DITHER: + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + if (state) + i915->state.Ctx[I915_CTXREG_LIS5] |= S5_COLOR_DITHER_ENABLE; + else + i915->state.Ctx[I915_CTXREG_LIS5] &= ~S5_COLOR_DITHER_ENABLE; + break; + + case GL_DEPTH_TEST: + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + if (state) + i915->state.Ctx[I915_CTXREG_LIS6] |= S6_DEPTH_TEST_ENABLE; + else + i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_DEPTH_TEST_ENABLE; + + i915DepthMask( ctx, ctx->Depth.Mask ); + break; + + case GL_SCISSOR_TEST: + I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS); + if (state) + i915->state.Buffer[I915_DESTREG_SENABLE] = (_3DSTATE_SCISSOR_ENABLE_CMD | + ENABLE_SCISSOR_RECT); + else + i915->state.Buffer[I915_DESTREG_SENABLE] = (_3DSTATE_SCISSOR_ENABLE_CMD | + DISABLE_SCISSOR_RECT); + break; + + case GL_LINE_SMOOTH: + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + if (state) + i915->state.Ctx[I915_CTXREG_LIS4] |= S4_LINE_ANTIALIAS_ENABLE; + else + i915->state.Ctx[I915_CTXREG_LIS4] &= ~S4_LINE_ANTIALIAS_ENABLE; + break; + + case GL_FOG: + update_fog( ctx ); + break; + + case GL_CULL_FACE: + i915CullFaceFrontFace(ctx, 0); + break; + + case GL_STENCIL_TEST: + if (i915->intel.hw_stencil) { + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + if (state) + i915->state.Ctx[I915_CTXREG_LIS5] |= (S5_STENCIL_TEST_ENABLE | + S5_STENCIL_WRITE_ENABLE); + else + i915->state.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_TEST_ENABLE | + S5_STENCIL_WRITE_ENABLE); + } else { + FALLBACK( &i915->intel, I915_FALLBACK_STENCIL, state ); + } + break; + + case GL_POLYGON_STIPPLE: + /* The stipple command worked on my 855GM box, but not my 845G. + * I'll do more testing later to find out exactly which hardware + * supports it. Disabled for now. + */ + if (i915->intel.hw_stipple && + i915->intel.reduced_primitive == GL_TRIANGLES) + { + I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE); + if (state) + i915->state.Stipple[I915_STPREG_ST1] |= ST1_ENABLE; + else + i915->state.Stipple[I915_STPREG_ST1] &= ~ST1_ENABLE; + } + break; + + default: + ; + } +} + + +static void i915_init_packets( i915ContextPtr i915 ) +{ + intelScreenPrivate *screen = i915->intel.intelScreen; + + /* Zero all state */ + memset(&i915->state, 0, sizeof(i915->state)); + + + { + I915_STATECHANGE(i915, I915_UPLOAD_CTX); + /* Probably don't want to upload all this stuff every time one + * piece changes. + */ + i915->state.Ctx[I915_CTXREG_LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_1 | + I1_LOAD_S(2) | + I1_LOAD_S(4) | + I1_LOAD_S(5) | + I1_LOAD_S(6) | + (4)); + i915->state.Ctx[I915_CTXREG_LIS2] = 0; + i915->state.Ctx[I915_CTXREG_LIS4] = 0; + i915->state.Ctx[I915_CTXREG_LIS5] = 0; + + if (screen->cpp == 2) + i915->state.Ctx[I915_CTXREG_LIS5] |= S5_COLOR_DITHER_ENABLE; + + + i915->state.Ctx[I915_CTXREG_LIS6] = (S6_COLOR_WRITE_ENABLE | + (2 << S6_TRISTRIP_PV_SHIFT)); + + i915->state.Ctx[I915_CTXREG_STATE4] = (_3DSTATE_MODES_4_CMD | + ENABLE_LOGIC_OP_FUNC | + LOGIC_OP_FUNC(LOGICOP_COPY) | + ENABLE_STENCIL_TEST_MASK | + STENCIL_TEST_MASK(0xff) | + ENABLE_STENCIL_WRITE_MASK | + STENCIL_WRITE_MASK(0xff)); + + + i915->state.Ctx[I915_CTXREG_IAB] = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | + IAB_MODIFY_ENABLE | + IAB_MODIFY_FUNC | + IAB_MODIFY_SRC_FACTOR | + IAB_MODIFY_DST_FACTOR); + + i915->state.Ctx[I915_CTXREG_BLENDCOLOR0] = _3DSTATE_CONST_BLEND_COLOR_CMD; + i915->state.Ctx[I915_CTXREG_BLENDCOLOR1] = 0; + + } + + { + I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE); + i915->state.Stipple[I915_STPREG_ST0] = _3DSTATE_STIPPLE; + } + + + { + I915_STATECHANGE(i915, I915_UPLOAD_FOG); + i915->state.Fog[I915_FOGREG_MODE0] = _3DSTATE_FOG_MODE_CMD; + i915->state.Fog[I915_FOGREG_MODE1] = (FMC1_FOGFUNC_MODIFY_ENABLE | + FMC1_FOGFUNC_VERTEX | + FMC1_FOGINDEX_MODIFY_ENABLE | + FMC1_FOGINDEX_W | + FMC1_C1_C2_MODIFY_ENABLE | + FMC1_DENSITY_MODIFY_ENABLE); + i915->state.Fog[I915_FOGREG_COLOR] = _3DSTATE_FOG_COLOR_CMD; + } + + + { + I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS); + i915->state.Buffer[I915_DESTREG_CBUFADDR0] = _3DSTATE_BUF_INFO_CMD; + i915->state.Buffer[I915_DESTREG_CBUFADDR1] = + (BUF_3D_ID_COLOR_BACK | + BUF_3D_PITCH(screen->frontPitch * screen->cpp) | + BUF_3D_USE_FENCE); + + + i915->state.Buffer[I915_DESTREG_DBUFADDR0] = _3DSTATE_BUF_INFO_CMD; + i915->state.Buffer[I915_DESTREG_DBUFADDR1] = + (BUF_3D_ID_DEPTH | + BUF_3D_PITCH(screen->depthPitch * screen->cpp) | + BUF_3D_USE_FENCE); + i915->state.Buffer[I915_DESTREG_DBUFADDR2] = screen->depthOffset; + + + i915->state.Buffer[I915_DESTREG_DV0] = _3DSTATE_DST_BUF_VARS_CMD; + + switch (screen->fbFormat) { + case DV_PF_555: + case DV_PF_565: + i915->state.Buffer[I915_DESTREG_DV1] = (DSTORG_HORT_BIAS(0x8) | /* .5 */ + DSTORG_VERT_BIAS(0x8) | /* .5 */ + LOD_PRECLAMP_OGL | + TEX_DEFAULT_COLOR_OGL | + DITHER_FULL_ALWAYS | + screen->fbFormat | + DEPTH_FRMT_16_FIXED); + break; + case DV_PF_8888: + i915->state.Buffer[I915_DESTREG_DV1] = (DSTORG_HORT_BIAS(0x8) | /* .5 */ + DSTORG_VERT_BIAS(0x8) | /* .5 */ + LOD_PRECLAMP_OGL | + TEX_DEFAULT_COLOR_OGL | + screen->fbFormat | + DEPTH_FRMT_24_FIXED_8_OTHER); + break; + } + i915->state.Buffer[I915_DESTREG_SENABLE] = (_3DSTATE_SCISSOR_ENABLE_CMD | + DISABLE_SCISSOR_RECT); + i915->state.Buffer[I915_DESTREG_SR0] = _3DSTATE_SCISSOR_RECT_0_CMD; + i915->state.Buffer[I915_DESTREG_SR1] = 0; + i915->state.Buffer[I915_DESTREG_SR2] = 0; + } + + + /* These will be emitted every at the head of every buffer, unless + * we get hardware contexts working. + */ + i915->state.active = (I915_UPLOAD_PROGRAM | + I915_UPLOAD_STIPPLE | + I915_UPLOAD_CTX | + I915_UPLOAD_BUFFERS); +} + +void i915InitStateFunctions( struct dd_function_table *functions ) +{ + functions->AlphaFunc = i915AlphaFunc; + functions->BlendColor = i915BlendColor; + functions->BlendEquationSeparate = i915BlendEquationSeparate; + functions->BlendFuncSeparate = i915BlendFuncSeparate; + functions->ColorMask = i915ColorMask; + functions->CullFace = i915CullFaceFrontFace; + functions->DepthFunc = i915DepthFunc; + functions->DepthMask = i915DepthMask; + functions->Enable = i915Enable; + functions->Fogfv = i915Fogfv; + functions->FrontFace = i915CullFaceFrontFace; + functions->Hint = i915Hint; + functions->LightModelfv = i915LightModelfv; + functions->LineWidth = i915LineWidth; + functions->LogicOpcode = i915LogicOp; + functions->PointSize = i915PointSize; + functions->PolygonStipple = i915PolygonStipple; + functions->Scissor = i915Scissor; + functions->ShadeModel = i915ShadeModel; + functions->StencilFunc = i915StencilFunc; + functions->StencilMask = i915StencilMask; + functions->StencilOp = i915StencilOp; +} + + +void i915InitState( i915ContextPtr i915 ) +{ + GLcontext *ctx = &i915->intel.ctx; + + i915_init_packets( i915 ); + + intelInitState( ctx ); + + memcpy( &i915->initial, &i915->state, sizeof(i915->state) ); + i915->current = &i915->state; +} + + + + + + + -- cgit v1.2.3