Earlier comments suggest this was removed from GL core spec but it is
still there. Enabling makes 'texture_lod_bias_getter' Khronos
conformance tests pass, also removes some errors from Metro Last Light
game which is using this API.
Signed-off-by: Tapani Pälli <tapani.pa...@intel.com>
---
src/mesa/main/texparam.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c
index d56b7d9..e1bfeb0 100644
--- a/src/mesa/main/texparam.c
+++ b/src/mesa/main/texparam.c
@@ -684,11 +684,7 @@ set_tex_parameterf(struct gl_context *ctx,
return GL_FALSE;
case GL_TEXTURE_LOD_BIAS:
- /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias.
- * It was removed in core-profile, and it has never existed in OpenGL
- * ES.
- */
- if (ctx->API != API_OPENGL_COMPAT)
+ if (_mesa_is_gles(ctx))
goto invalid_pname;
if (!target_allows_setting_sampler_parameters(texObj->Target))
@@ -1513,7 +1509,7 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname,
GLfloat *params )
*params = (GLfloat) obj->DepthMode;
break;
case GL_TEXTURE_LOD_BIAS:
- if (ctx->API != API_OPENGL_COMPAT)
+ if (_mesa_is_gles(ctx))
goto invalid_pname;
*params = obj->Sampler.LodBias;
@@ -1701,10 +1697,13 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname,
GLint *params )
*params = (GLint) obj->DepthMode;
break;
case GL_TEXTURE_LOD_BIAS:
- if (ctx->API != API_OPENGL_COMPAT)
+ if (_mesa_is_gles(ctx))
goto invalid_pname;
- *params = (GLint) obj->Sampler.LodBias;
+ /* GL spec 'Data Conversions' section specifies that floating-point
+ * value in integer Get function is rounded to nearest integer
+ */
+ *params = (GLint) roundf(obj->Sampler.LodBias);
break;
case GL_TEXTURE_CROP_RECT_OES:
if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
--
1.8.1.4
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