From: Ian Romanick <idr@us.ibm.com>
Date: Fri, 30 May 2003 21:37:14 +0000 (+0000)
Subject: Added support for NV_light_max_exponent.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=882caa18c6c551cbe60f205795b00a6a5361a986;p=mesa.git

Added support for NV_light_max_exponent.
---

diff --git a/src/mesa/main/api_noop.c b/src/mesa/main/api_noop.c
index ff96605f1bb..f15e3b61423 100644
--- a/src/mesa/main/api_noop.c
+++ b/src/mesa/main/api_noop.c
@@ -1,4 +1,4 @@
-/* $Id: api_noop.c,v 1.12 2003/03/01 01:50:20 brianp Exp $ */
+/* $Id: api_noop.c,v 1.13 2003/05/30 21:37:14 idr Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -130,11 +130,11 @@ void _mesa_noop_Materialfv( GLenum face, GLenum pname, const GLfloat *params )
       COPY_4FV( mat[1].Emission, params );
    }
    if (bitmask & FRONT_SHININESS_BIT) {
-      GLfloat shininess = CLAMP( params[0], 0.0F, 128.0F );
+      GLfloat shininess = CLAMP( params[0], 0.0F, ctx->Const.MaxShininess );
       mat[0].Shininess = shininess;
    }
    if (bitmask & BACK_SHININESS_BIT) {
-      GLfloat shininess = CLAMP( params[0], 0.0F, 128.0F );
+      GLfloat shininess = CLAMP( params[0], 0.0F, ctx->Const.MaxShininess );
       mat[1].Shininess = shininess;
    }
    if (bitmask & FRONT_INDEXES_BIT) {
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 1101045afd3..798308a8751 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -988,6 +988,8 @@ init_attrib_groups( GLcontext *ctx )
    ctx->Const.MaxConvolutionHeight = MAX_CONVOLUTION_HEIGHT;
    ctx->Const.MaxClipPlanes = MAX_CLIP_PLANES;
    ctx->Const.MaxLights = MAX_LIGHTS;
+   ctx->Const.MaxSpotExponent = 128.0;
+   ctx->Const.MaxShininess = 128.0;
 #if FEATURE_ARB_vertex_program
    ctx->Const.MaxVertexProgramInstructions = MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS;
    ctx->Const.MaxVertexProgramAttribs = MAX_NV_VERTEX_PROGRAM_INPUTS;
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 2f5bc7588f3..ad06bf7687b 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -116,6 +116,7 @@ static struct {
    { OFF, "GL_MESA_ycbcr_texture",             F(MESA_ycbcr_texture) },
    { ON,  "GL_MESA_window_pos",                F(MESA_window_pos) },
    { OFF, "GL_NV_blend_square",                F(NV_blend_square) },
+   { ON,  "GL_NV_light_max_exponent",          F(NV_light_max_exponent) },
    { OFF, "GL_NV_point_sprite",                F(NV_point_sprite) },
    { OFF, "GL_NV_texture_rectangle",           F(NV_texture_rectangle) },
    { ON,  "GL_NV_texgen_reflection",           F(NV_texgen_reflection) },
@@ -197,6 +198,7 @@ _mesa_enable_sw_extensions(GLcontext *ctx)
       "GL_MESA_resize_buffers",
       "GL_MESA_ycbcr_texture",
       "GL_NV_blend_square",
+      "GL_NV_light_max_exponent",
       "GL_NV_point_sprite",
       "GL_NV_texture_rectangle",
       "GL_NV_texgen_reflection",
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 999adcc84f8..09895f8090e 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -1518,6 +1518,16 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
          *params = ENUM_TO_BOOL(ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT);
          break;
 
+      /* GL_NV_light_max_exponent */
+      case GL_MAX_SHININESS_NV:
+         CHECK_EXTENSION_B(NV_light_max_exponent, pname);
+         *params = FLOAT_TO_BOOL(ctx->Const.MaxShininess);
+         break;
+      case GL_MAX_SPOT_EXPONENT_NV:
+         CHECK_EXTENSION_B(NV_light_max_exponent, pname);
+         *params = FLOAT_TO_BOOL(ctx->Const.MaxSpotExponent);
+         break;
+         
 #if FEATURE_ARB_vertex_buffer_object
       case GL_ARRAY_BUFFER_BINDING_ARB:
          CHECK_EXTENSION_B(ARB_vertex_buffer_object, pname);
@@ -3016,6 +3026,16 @@ _mesa_GetDoublev( GLenum pname, GLdouble *params )
          *params = (GLdouble) (ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT);
          break;
 
+      /* GL_NV_light_max_exponent */
+      case GL_MAX_SHININESS_NV:
+         CHECK_EXTENSION_B(NV_light_max_exponent, pname);
+         *params = (GLdouble) ctx->Const.MaxShininess;
+         break;
+      case GL_MAX_SPOT_EXPONENT_NV:
+         CHECK_EXTENSION_B(NV_light_max_exponent, pname);
+         *params = (GLdouble) ctx->Const.MaxSpotExponent;
+         break;
+
 #if FEATURE_ARB_vertex_buffer_object
       case GL_ARRAY_BUFFER_BINDING_ARB:
          CHECK_EXTENSION_D(ARB_vertex_buffer_object, pname);
@@ -4490,6 +4510,16 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
          *params = (GLfloat) (ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT);
          break;
 
+      /* GL_NV_light_max_exponent */
+      case GL_MAX_SHININESS_NV:
+         CHECK_EXTENSION_B(NV_light_max_exponent, pname);
+         *params = ctx->Const.MaxShininess;
+         break;
+      case GL_MAX_SPOT_EXPONENT_NV:
+         CHECK_EXTENSION_B(NV_light_max_exponent, pname);
+         *params = ctx->Const.MaxSpotExponent;
+         break;
+
 #if FEATURE_ARB_vertex_buffer_object
       case GL_ARRAY_BUFFER_BINDING_ARB:
          CHECK_EXTENSION_F(ARB_vertex_buffer_object, pname);
@@ -6002,6 +6032,16 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
          *params = (GLint) (ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT);
          break;
 
+      /* GL_NV_light_max_exponent */
+      case GL_MAX_SHININESS_NV:
+         CHECK_EXTENSION_B(NV_light_max_exponent, pname);
+         *params = (GLint) ctx->Const.MaxShininess;
+         break;
+      case GL_MAX_SPOT_EXPONENT_NV:
+         CHECK_EXTENSION_B(NV_light_max_exponent, pname);
+         *params = (GLint) ctx->Const.MaxSpotExponent;
+         break;
+
 #if FEATURE_ARB_vertex_buffer_object
       case GL_ARRAY_BUFFER_BINDING_ARB:
          CHECK_EXTENSION_I(ARB_vertex_buffer_object, pname);
diff --git a/src/mesa/main/light.c b/src/mesa/main/light.c
index c7fa7018d3f..e1513b88296 100644
--- a/src/mesa/main/light.c
+++ b/src/mesa/main/light.c
@@ -1,4 +1,4 @@
-/* $Id: light.c,v 1.55 2003/03/01 01:50:21 brianp Exp $ */
+/* $Id: light.c,v 1.56 2003/05/30 21:37:19 idr Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -136,7 +136,7 @@ _mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params )
       break;
    }
    case GL_SPOT_EXPONENT:
-      if (params[0]<0.0 || params[0]>128.0) {
+      if (params[0]<0.0 || params[0]>ctx->Const.MaxSpotExponent) {
 	 _mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
 	 return;
       }
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 2b7fe01a12e..826f077e355 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1409,6 +1409,8 @@ struct gl_constants {
    GLuint MaxConvolutionHeight;
    GLuint MaxClipPlanes;
    GLuint MaxLights;
+   GLfloat MaxShininess;			/* GL_NV_light_max_exponent */
+   GLfloat MaxSpotExponent;			/* GL_NV_light_max_exponent */
    /* GL_ARB_vertex_program */
    GLuint MaxVertexProgramInstructions;
    GLuint MaxVertexProgramAttribs;
@@ -1500,6 +1502,7 @@ struct gl_extensions {
    GLboolean MESA_ycbcr_texture;
    GLboolean NV_blend_square;
    GLboolean NV_fragment_program;
+   GLboolean NV_light_max_exponent;
    GLboolean NV_point_sprite;
    GLboolean NV_texture_rectangle;
    GLboolean NV_texgen_reflection;
diff --git a/src/mesa/tnl/t_imm_api.c b/src/mesa/tnl/t_imm_api.c
index cc7f42f3847..9274d6f9be3 100644
--- a/src/mesa/tnl/t_imm_api.c
+++ b/src/mesa/tnl/t_imm_api.c
@@ -1319,11 +1319,11 @@ _tnl_Materialfv( GLenum face, GLenum pname, const GLfloat *params )
       COPY_4FV( mat[1].Emission, params );
    }
    if (bitmask & FRONT_SHININESS_BIT) {
-      GLfloat shininess = CLAMP( params[0], 0.0F, 128.0F );
+      GLfloat shininess = CLAMP( params[0], 0.0F, ctx->Const.MaxShininess );
       mat[0].Shininess = shininess;
    }
    if (bitmask & BACK_SHININESS_BIT) {
-      GLfloat shininess = CLAMP( params[0], 0.0F, 128.0F );
+      GLfloat shininess = CLAMP( params[0], 0.0F, ctx->Const.MaxShininess );
       mat[1].Shininess = shininess;
    }
    if (bitmask & FRONT_INDEXES_BIT) {