gallium: separate out floating-point CAPs into its own enum

The motivation behind this is to add some self-documentation in the code
about how each CAP can be used.

The idea is:
- enum pipe_cap is only valid in get_param
- enum pipe_capf is only valid in get_paramf

Which CAPs are floating-point have been determined based on how everybody
except svga implemented the functions. svga have been modified to match all
the other drivers.

Besides that, the floating-point CAPs are now prefixed with PIPE_CAPF_.

2 files changed, 20 insertions, 12 deletions

diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index afbf0af67dc..8a077f0e36c 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -419,7 +419,7 @@ enum pipe_transfer_usage {
 
 /**
  * Implementation capabilities/limits which are queried through
- * pipe_screen::get_param() and pipe_screen::get_paramf().
+ * pipe_screen::get_param()
  */
 enum pipe_cap {
    PIPE_CAP_NPOT_TEXTURES = 1,
@@ -435,16 +435,6 @@ enum pipe_cap {
    PIPE_CAP_MAX_TEXTURE_2D_LEVELS = 12,
    PIPE_CAP_MAX_TEXTURE_3D_LEVELS = 13,
    PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS = 14,
-   PIPE_CAP_MAX_LINE_WIDTH = 15,
-   PIPE_CAP_MAX_LINE_WIDTH_AA = 16,
-   PIPE_CAP_MAX_POINT_WIDTH = 17,
-   PIPE_CAP_MAX_POINT_WIDTH_AA = 18,
-   PIPE_CAP_MAX_TEXTURE_ANISOTROPY = 19,
-   PIPE_CAP_MAX_TEXTURE_LOD_BIAS = 20,
-   PIPE_CAP_GUARD_BAND_LEFT = 21,  /*< float */
-   PIPE_CAP_GUARD_BAND_TOP = 22,  /*< float */
-   PIPE_CAP_GUARD_BAND_RIGHT = 23,  /*< float */
-   PIPE_CAP_GUARD_BAND_BOTTOM = 24,  /*< float */
    PIPE_CAP_TEXTURE_MIRROR_CLAMP = 25,
    PIPE_CAP_BLEND_EQUATION_SEPARATE = 28,
    PIPE_CAP_SM3 = 29,  /*< Shader Model, supported */
@@ -478,6 +468,24 @@ enum pipe_cap {
    PIPE_CAP_TEXTURE_BARRIER = 53
 };
 
+/**
+ * Implementation limits which are queried through
+ * pipe_screen::get_paramf()
+ */
+enum pipe_capf
+{
+   PIPE_CAPF_MAX_LINE_WIDTH = 15,
+   PIPE_CAPF_MAX_LINE_WIDTH_AA = 16,
+   PIPE_CAPF_MAX_POINT_WIDTH = 17,
+   PIPE_CAPF_MAX_POINT_WIDTH_AA = 18,
+   PIPE_CAPF_MAX_TEXTURE_ANISOTROPY = 19,
+   PIPE_CAPF_MAX_TEXTURE_LOD_BIAS = 20,
+   PIPE_CAPF_GUARD_BAND_LEFT = 21,  /*< float */
+   PIPE_CAPF_GUARD_BAND_TOP = 22,  /*< float */
+   PIPE_CAPF_GUARD_BAND_RIGHT = 23,  /*< float */
+   PIPE_CAPF_GUARD_BAND_BOTTOM = 24,  /*< float */
+};
+
 /* Shader caps not specific to any single stage */
 enum pipe_shader_cap
 {
diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h
index 6821edd4a56..70d41357898 100644
--- a/src/gallium/include/pipe/p_screen.h
+++ b/src/gallium/include/pipe/p_screen.h
@@ -85,7 +85,7 @@ struct pipe_screen {
     * Query a float-valued capability/parameter/limit
     * \param param  one of PIPE_CAP_x
     */
-   float (*get_paramf)( struct pipe_screen *, enum pipe_cap param );
+   float (*get_paramf)( struct pipe_screen *, enum pipe_capf param );
 
    /**
     * Query a per-shader-stage integer-valued capability/parameter/limit