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added GL_EXT_texture_lod_bias extension (Michael Vance)

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This commit is contained in:
Brian Paul
2000-03-07 17:54:58 +00:00
parent 4f92969899
commit aabf086a03
4 changed files with 92 additions and 40 deletions
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85
src/mesa/main/texstate.c
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@@ -1,4 +1,4 @@
/* $Id: texstate.c,v 1.8 2000/03/07 17:11:29 brianp Exp $ */
/* $Id: texstate.c,v 1.9 2000/03/07 17:54:58 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -69,35 +69,24 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexEnv");
if (target!=GL_TEXTURE_ENV) {
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(target)" );
return;
}
if (target==GL_TEXTURE_ENV) {
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
fprintf(stderr, "glTexEnv %s %s %.1f(%s) ...\n",
gl_lookup_enum_by_nr(target),
gl_lookup_enum_by_nr(pname),
*param,
gl_lookup_enum_by_nr((GLenum) (GLint) *param));
if (pname==GL_TEXTURE_ENV_MODE) {
GLenum mode = (GLenum) (GLint) *param;
switch (mode) {
case GL_ADD:
if (!gl_extension_is_enabled(ctx, "GL_EXT_texture_env_add")) {
gl_error(ctx, GL_INVALID_ENUM, "glTexEnv(param)");
return;
}
/* FALL-THROUGH */
case GL_MODULATE:
case GL_BLEND:
case GL_DECAL:
case GL_REPLACE:
if (pname==GL_TEXTURE_ENV_MODE) {
GLenum mode = (GLenum) (GLint) *param;
switch (mode) {
case GL_ADD:
if (!ctx->Extensions.HaveTextureEnvAdd) {
gl_error(ctx, GL_INVALID_ENUM, "glTexEnv(param)");
return;
}
/* FALL-THROUGH */
case GL_MODULATE:
case GL_BLEND:
case GL_DECAL:
case GL_REPLACE:
/* A small optimization for drivers */
if (texUnit->EnvMode == mode)
return;
return;
if (MESA_VERBOSE & (VERBOSE_STATE|VERBOSE_TEXTURE))
fprintf(stderr, "glTexEnv: old mode %s, new mode %s\n",
@@ -110,23 +99,53 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
default:
gl_error( ctx, GL_INVALID_VALUE, "glTexEnv(param)" );
return;
}
}
else if (pname==GL_TEXTURE_ENV_COLOR) {
texUnit->EnvColor[0] = CLAMP( param[0], 0.0F, 1.0F );
texUnit->EnvColor[1] = CLAMP( param[1], 0.0F, 1.0F );
texUnit->EnvColor[2] = CLAMP( param[2], 0.0F, 1.0F );
texUnit->EnvColor[3] = CLAMP( param[3], 0.0F, 1.0F );
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
return;
}
}
else if (pname==GL_TEXTURE_ENV_COLOR) {
texUnit->EnvColor[0] = CLAMP( param[0], 0.0F, 1.0F );
texUnit->EnvColor[1] = CLAMP( param[1], 0.0F, 1.0F );
texUnit->EnvColor[2] = CLAMP( param[2], 0.0F, 1.0F );
texUnit->EnvColor[3] = CLAMP( param[3], 0.0F, 1.0F );
else if (target==GL_TEXTURE_FILTER_CONTROL_EXT) {
if (!ctx->Extensions.HaveTextureLodBias) {
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(param)" );
return;
}
if (pname==GL_TEXTURE_LOD_BIAS_EXT) {
texUnit->LodBias = param[0];
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
return;
}
}
else {
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
gl_error( ctx, GL_INVALID_ENUM, "glTexEnv(target)" );
return;
}
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
fprintf(stderr, "glTexEnv %s %s %.1f(%s) ...\n",
gl_lookup_enum_by_nr(target),
gl_lookup_enum_by_nr(pname),
*param,
gl_lookup_enum_by_nr((GLenum) (GLint) *param));
/* Tell device driver about the new texture environment */
if (ctx->Driver.TexEnv) {
(*ctx->Driver.TexEnv)( ctx, target, pname, param );
}
}