X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Flight.c;h=c27cf1dd38b0a44661506c0037478426c4aea82c;hb=b79782cbedf8b23ea392d9a597eb4831a605bbe0;hp=d4db960f1b9a500e2c672a7c6da32f386760f13d;hpb=d7f1cb5b5a134b63227d5746a2dd1f05597c5c2f;p=mesa.git diff --git a/src/mesa/main/light.c b/src/mesa/main/light.c index d4db960f1b9..c27cf1dd38b 100644 --- a/src/mesa/main/light.c +++ b/src/mesa/main/light.c @@ -1,8 +1,9 @@ /* * Mesa 3-D graphics library - * Version: 7.0 + * Version: 7.5 * - * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, 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"), @@ -63,6 +64,37 @@ _mesa_ShadeModel( GLenum mode ) } +/** + * Set the provoking vertex (the vertex which specifies the prim's + * color when flat shading) to either the first or last vertex of the + * triangle or line. + */ +void GLAPIENTRY +_mesa_ProvokingVertexEXT(GLenum mode) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (MESA_VERBOSE&VERBOSE_API) + _mesa_debug(ctx, "glProvokingVertexEXT 0x%x\n", mode); + + switch (mode) { + case GL_FIRST_VERTEX_CONVENTION_EXT: + case GL_LAST_VERTEX_CONVENTION_EXT: + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glProvokingVertexEXT(0x%x)", mode); + return; + } + + if (ctx->Light.ProvokingVertex == mode) + return; + + FLUSH_VERTICES(ctx, _NEW_LIGHT); + ctx->Light.ProvokingVertex = mode; +} + + /** * Helper function called by _mesa_Lightfv and _mesa_PopAttrib to set * per-light state. @@ -71,7 +103,7 @@ _mesa_ShadeModel( GLenum mode ) * Also, all error checking should have already been done. */ void -_mesa_light(GLcontext *ctx, GLuint lnum, GLenum pname, const GLfloat *params) +_mesa_light(struct gl_context *ctx, GLuint lnum, GLenum pname, const GLfloat *params) { struct gl_light *light; @@ -110,10 +142,10 @@ _mesa_light(GLcontext *ctx, GLuint lnum, GLenum pname, const GLfloat *params) break; case GL_SPOT_DIRECTION: /* NOTE: Direction already transformed by inverse ModelView! */ - if (TEST_EQ_3V(light->EyeDirection, params)) + if (TEST_EQ_3V(light->SpotDirection, params)) return; FLUSH_VERTICES(ctx, _NEW_LIGHT); - COPY_3V(light->EyeDirection, params); + COPY_3V(light->SpotDirection, params); break; case GL_SPOT_EXPONENT: ASSERT(params[0] >= 0.0); @@ -130,7 +162,7 @@ _mesa_light(GLcontext *ctx, GLuint lnum, GLenum pname, const GLfloat *params) return; FLUSH_VERTICES(ctx, _NEW_LIGHT); light->SpotCutoff = params[0]; - light->_CosCutoffNeg = (GLfloat) (_mesa_cos(light->SpotCutoff * DEG2RAD)); + light->_CosCutoffNeg = (GLfloat) (cos(light->SpotCutoff * DEG2RAD)); if (light->_CosCutoffNeg < 0) light->_CosCutoff = 0; else @@ -174,7 +206,10 @@ _mesa_light(GLcontext *ctx, GLuint lnum, GLenum pname, const GLfloat *params) void GLAPIENTRY _mesa_Lightf( GLenum light, GLenum pname, GLfloat param ) { - _mesa_Lightfv( light, pname, ¶m ); + GLfloat fparam[4]; + fparam[0] = param; + fparam[1] = fparam[2] = fparam[3] = 0.0F; + _mesa_Lightfv( light, pname, fparam ); } @@ -208,7 +243,7 @@ _mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params ) if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) { _math_matrix_analyse(ctx->ModelviewMatrixStack.Top); } - TRANSFORM_NORMAL(temp, params, ctx->ModelviewMatrixStack.Top->inv); + TRANSFORM_DIRECTION(temp, params, ctx->ModelviewMatrixStack.Top->m); params = temp; break; case GL_SPOT_EXPONENT: @@ -253,7 +288,10 @@ _mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params ) void GLAPIENTRY _mesa_Lighti( GLenum light, GLenum pname, GLint param ) { - _mesa_Lightiv( light, pname, ¶m ); + GLint iparam[4]; + iparam[0] = param; + iparam[1] = iparam[2] = iparam[3] = 0; + _mesa_Lightiv( light, pname, iparam ); } @@ -325,7 +363,7 @@ _mesa_GetLightfv( GLenum light, GLenum pname, GLfloat *params ) COPY_4V( params, ctx->Light.Light[l].EyePosition ); break; case GL_SPOT_DIRECTION: - COPY_3V( params, ctx->Light.Light[l].EyeDirection ); + COPY_3V( params, ctx->Light.Light[l].SpotDirection ); break; case GL_SPOT_EXPONENT: params[0] = ctx->Light.Light[l].SpotExponent; @@ -387,9 +425,9 @@ _mesa_GetLightiv( GLenum light, GLenum pname, GLint *params ) params[3] = (GLint) ctx->Light.Light[l].EyePosition[3]; break; case GL_SPOT_DIRECTION: - params[0] = (GLint) ctx->Light.Light[l].EyeDirection[0]; - params[1] = (GLint) ctx->Light.Light[l].EyeDirection[1]; - params[2] = (GLint) ctx->Light.Light[l].EyeDirection[2]; + params[0] = (GLint) ctx->Light.Light[l].SpotDirection[0]; + params[1] = (GLint) ctx->Light.Light[l].SpotDirection[1]; + params[2] = (GLint) ctx->Light.Light[l].SpotDirection[2]; break; case GL_SPOT_EXPONENT: params[0] = (GLint) ctx->Light.Light[l].SpotExponent; @@ -496,7 +534,7 @@ _mesa_LightModeliv( GLenum pname, const GLint *params ) break; default: /* Error will be caught later in gl_LightModelfv */ - ; + ASSIGN_4V(fparam, 0.0F, 0.0F, 0.0F, 0.0F); } _mesa_LightModelfv( pname, fparam ); } @@ -505,14 +543,20 @@ _mesa_LightModeliv( GLenum pname, const GLint *params ) void GLAPIENTRY _mesa_LightModeli( GLenum pname, GLint param ) { - _mesa_LightModeliv( pname, ¶m ); + GLint iparam[4]; + iparam[0] = param; + iparam[1] = iparam[2] = iparam[3] = 0; + _mesa_LightModeliv( pname, iparam ); } void GLAPIENTRY _mesa_LightModelf( GLenum pname, GLfloat param ) { - _mesa_LightModelfv( pname, ¶m ); + GLfloat fparam[4]; + fparam[0] = param; + fparam[1] = fparam[2] = fparam[3] = 0.0F; + _mesa_LightModelfv( pname, fparam ); } @@ -525,7 +569,7 @@ _mesa_LightModelf( GLenum pname, GLfloat param ) * of the targeted material values. */ GLuint -_mesa_material_bitmask( GLcontext *ctx, GLenum face, GLenum pname, +_mesa_material_bitmask( struct gl_context *ctx, GLenum face, GLenum pname, GLuint legal, const char *where ) { GLuint bitmask = 0; @@ -555,7 +599,7 @@ _mesa_material_bitmask( GLcontext *ctx, GLenum face, GLenum pname, bitmask |= MAT_BIT_FRONT_INDEXES | MAT_BIT_BACK_INDEXES; break; default: - _mesa_error( ctx, GL_INVALID_ENUM, where ); + _mesa_error( ctx, GL_INVALID_ENUM, "%s", where ); return 0; } @@ -566,12 +610,12 @@ _mesa_material_bitmask( GLcontext *ctx, GLenum face, GLenum pname, bitmask &= BACK_MATERIAL_BITS; } else if (face != GL_FRONT_AND_BACK) { - _mesa_error( ctx, GL_INVALID_ENUM, where ); + _mesa_error( ctx, GL_INVALID_ENUM, "%s", where ); return 0; } if (bitmask & ~legal) { - _mesa_error( ctx, GL_INVALID_ENUM, where ); + _mesa_error( ctx, GL_INVALID_ENUM, "%s", where ); return 0; } @@ -599,12 +643,12 @@ _mesa_copy_materials( struct gl_material *dst, /* Update derived values following a change in ctx->Light.Material */ void -_mesa_update_material( GLcontext *ctx, GLuint bitmask ) +_mesa_update_material( struct gl_context *ctx, GLuint bitmask ) { struct gl_light *light, *list = &ctx->Light.EnabledList; GLfloat (*mat)[4] = ctx->Light.Material.Attrib; - if (MESA_VERBOSE&VERBOSE_IMMEDIATE) + if (MESA_VERBOSE & VERBOSE_MATERIAL) _mesa_debug(ctx, "_mesa_update_material, mask 0x%x\n", bitmask); if (!bitmask) @@ -684,7 +728,7 @@ _mesa_update_material( GLcontext *ctx, GLuint bitmask ) * set by glColorMaterial(). */ void -_mesa_update_color_material( GLcontext *ctx, const GLfloat color[4] ) +_mesa_update_color_material( struct gl_context *ctx, const GLfloat color[4] ) { GLuint bitmask = ctx->Light.ColorMaterialBitmask; struct gl_material *mat = &ctx->Light.Material; @@ -906,7 +950,7 @@ validate_spot_exp_table( struct gl_light *l ) for (i = EXP_TABLE_SIZE - 1; i > 0 ;i--) { if (clamp == 0) { - tmp = _mesa_pow(i / (GLdouble) (EXP_TABLE_SIZE - 1), exponent); + tmp = pow(i / (GLdouble) (EXP_TABLE_SIZE - 1), exponent); if (tmp < FLT_MIN * 100.0) { tmp = 0.0; clamp = 1; @@ -928,7 +972,7 @@ validate_spot_exp_table( struct gl_light *l ) * by keeping a MRU cache of shine tables for various shine values. */ void -_mesa_invalidate_shine_table( GLcontext *ctx, GLuint side ) +_mesa_invalidate_shine_table( struct gl_context *ctx, GLuint side ) { ASSERT(side < 2); if (ctx->_ShineTable[side]) @@ -938,7 +982,7 @@ _mesa_invalidate_shine_table( GLcontext *ctx, GLuint side ) static void -validate_shine_table( GLcontext *ctx, GLuint side, GLfloat shininess ) +validate_shine_table( struct gl_context *ctx, GLuint side, GLfloat shininess ) { struct gl_shine_tab *list = ctx->_ShineTabList; struct gl_shine_tab *s; @@ -968,7 +1012,7 @@ validate_shine_table( GLcontext *ctx, GLuint side, GLfloat shininess ) GLdouble t, x = j / (GLfloat) (SHINE_TABLE_SIZE - 1); if (x < 0.005) /* underflow check */ x = 0.005; - t = _mesa_pow(x, shininess); + t = pow(x, shininess); if (t > 1e-20) m[j] = (GLfloat) t; else @@ -990,7 +1034,7 @@ validate_shine_table( GLcontext *ctx, GLuint side, GLfloat shininess ) void -_mesa_validate_all_lighting_tables( GLcontext *ctx ) +_mesa_validate_all_lighting_tables( struct gl_context *ctx ) { GLuint i; GLfloat shininess; @@ -1016,7 +1060,7 @@ _mesa_validate_all_lighting_tables( GLcontext *ctx ) * source and material ambient, diffuse and specular coefficients. */ void -_mesa_update_lighting( GLcontext *ctx ) +_mesa_update_lighting( struct gl_context *ctx ) { struct gl_light *light; ctx->Light._NeedEyeCoords = GL_FALSE; @@ -1049,31 +1093,22 @@ _mesa_update_lighting( GLcontext *ctx ) * FLUSH_UPDATE_CURRENT, as when any outstanding material changes * are flushed, they will update the derived state at that time. */ - if (ctx->Visual.rgbMode) { - if (ctx->Light.Model.TwoSide) - _mesa_update_material( ctx, - MAT_BIT_FRONT_EMISSION | - MAT_BIT_FRONT_AMBIENT | - MAT_BIT_FRONT_DIFFUSE | - MAT_BIT_FRONT_SPECULAR | - MAT_BIT_BACK_EMISSION | - MAT_BIT_BACK_AMBIENT | - MAT_BIT_BACK_DIFFUSE | - MAT_BIT_BACK_SPECULAR); - else - _mesa_update_material( ctx, - MAT_BIT_FRONT_EMISSION | - MAT_BIT_FRONT_AMBIENT | - MAT_BIT_FRONT_DIFFUSE | - MAT_BIT_FRONT_SPECULAR); - } - else { - static const GLfloat ci[3] = { .30F, .59F, .11F }; - foreach(light, &ctx->Light.EnabledList) { - light->_dli = DOT3(ci, light->Diffuse); - light->_sli = DOT3(ci, light->Specular); - } - } + if (ctx->Light.Model.TwoSide) + _mesa_update_material(ctx, + MAT_BIT_FRONT_EMISSION | + MAT_BIT_FRONT_AMBIENT | + MAT_BIT_FRONT_DIFFUSE | + MAT_BIT_FRONT_SPECULAR | + MAT_BIT_BACK_EMISSION | + MAT_BIT_BACK_AMBIENT | + MAT_BIT_BACK_DIFFUSE | + MAT_BIT_BACK_SPECULAR); + else + _mesa_update_material(ctx, + MAT_BIT_FRONT_EMISSION | + MAT_BIT_FRONT_AMBIENT | + MAT_BIT_FRONT_DIFFUSE | + MAT_BIT_FRONT_SPECULAR); } @@ -1088,7 +1123,7 @@ _mesa_update_lighting( GLcontext *ctx ) * Also update on lighting space changes. */ static void -compute_light_positions( GLcontext *ctx ) +compute_light_positions( struct gl_context *ctx ) { struct gl_light *light; static const GLfloat eye_z[3] = { 0, 0, 1 }; @@ -1136,20 +1171,26 @@ compute_light_positions( GLcontext *ctx ) } if (light->_Flags & LIGHT_SPOT) { + /* Note: we normalize the spot direction now */ + if (ctx->_NeedEyeCoords) { - COPY_3V( light->_NormDirection, light->EyeDirection ); + COPY_3V( light->_NormSpotDirection, light->SpotDirection ); + NORMALIZE_3FV( light->_NormSpotDirection ); } else { - TRANSFORM_NORMAL( light->_NormDirection, - light->EyeDirection, + GLfloat spotDir[3]; + COPY_3V(spotDir, light->SpotDirection); + NORMALIZE_3FV(spotDir); + TRANSFORM_NORMAL( light->_NormSpotDirection, + spotDir, ctx->ModelviewMatrixStack.Top->m); } - NORMALIZE_3FV( light->_NormDirection ); + NORMALIZE_3FV( light->_NormSpotDirection ); if (!(light->_Flags & LIGHT_POSITIONAL)) { GLfloat PV_dot_dir = - DOT3(light->_VP_inf_norm, - light->_NormDirection); + light->_NormSpotDirection); if (PV_dot_dir > light->_CosCutoff) { double x = PV_dot_dir * (EXP_TABLE_SIZE-1); @@ -1169,7 +1210,7 @@ compute_light_positions( GLcontext *ctx ) static void -update_modelview_scale( GLcontext *ctx ) +update_modelview_scale( struct gl_context *ctx ) { ctx->_ModelViewInvScale = 1.0F; if (!_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top)) { @@ -1188,7 +1229,7 @@ update_modelview_scale( GLcontext *ctx ) * Bring up to date any state that relies on _NeedEyeCoords. */ void -_mesa_update_tnl_spaces( GLcontext *ctx, GLuint new_state ) +_mesa_update_tnl_spaces( struct gl_context *ctx, GLuint new_state ) { const GLuint oldneedeyecoords = ctx->_NeedEyeCoords; @@ -1218,15 +1259,15 @@ _mesa_update_tnl_spaces( GLcontext *ctx, GLuint new_state ) ctx->Driver.LightingSpaceChange( ctx ); } else { - GLuint new_state = ctx->NewState; + GLuint new_state2 = ctx->NewState; /* Recalculate that same state only if it has been invalidated * by other statechanges. */ - if (new_state & _NEW_MODELVIEW) + if (new_state2 & _NEW_MODELVIEW) update_modelview_scale(ctx); - if (new_state & (_NEW_LIGHT|_NEW_MODELVIEW)) + if (new_state2 & (_NEW_LIGHT|_NEW_MODELVIEW)) compute_light_positions( ctx ); } } @@ -1237,7 +1278,7 @@ _mesa_update_tnl_spaces( GLcontext *ctx, GLuint new_state ) * light-in-modelspace optimization. It's also useful for debugging. */ void -_mesa_allow_light_in_model( GLcontext *ctx, GLboolean flag ) +_mesa_allow_light_in_model( struct gl_context *ctx, GLboolean flag ) { ctx->_ForceEyeCoords = !flag; ctx->NewState |= _NEW_POINT; /* one of the bits from @@ -1273,7 +1314,7 @@ init_light( struct gl_light *l, GLuint n ) ASSIGN_4V( l->Specular, 0.0, 0.0, 0.0, 1.0 ); } ASSIGN_4V( l->EyePosition, 0.0, 0.0, 1.0, 0.0 ); - ASSIGN_3V( l->EyeDirection, 0.0, 0.0, -1.0 ); + ASSIGN_3V( l->SpotDirection, 0.0, 0.0, -1.0 ); l->SpotExponent = 0.0; _mesa_invalidate_spot_exp_table( l ); l->SpotCutoff = 180.0; @@ -1329,7 +1370,7 @@ init_material( struct gl_material *m ) * Initialize all lighting state for the given context. */ void -_mesa_init_lighting( GLcontext *ctx ) +_mesa_init_lighting( struct gl_context *ctx ) { GLuint i; @@ -1342,6 +1383,7 @@ _mesa_init_lighting( GLcontext *ctx ) init_lightmodel( &ctx->Light.Model ); init_material( &ctx->Light.Material ); ctx->Light.ShadeModel = GL_SMOOTH; + ctx->Light.ProvokingVertex = GL_LAST_VERTEX_CONVENTION_EXT; ctx->Light.Enabled = GL_FALSE; ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK; ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE; @@ -1376,13 +1418,13 @@ _mesa_init_lighting( GLcontext *ctx ) * Deallocate malloc'd lighting state attached to given context. */ void -_mesa_free_lighting_data( GLcontext *ctx ) +_mesa_free_lighting_data( struct gl_context *ctx ) { struct gl_shine_tab *s, *tmps; /* Free lighting shininess exponentiation table */ foreach_s( s, tmps, ctx->_ShineTabList ) { - _mesa_free( s ); + free( s ); } - _mesa_free( ctx->_ShineTabList ); + free( ctx->_ShineTabList ); }