Mesa (master): mesa: further reduce the size of ctx->Texture

[Marek Olšák]

Module: Mesa
Branch: master
Commit: ca5c5d96d8d6c4aa39701ec2bd012b79d9493910
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ca5c5d96d8d6c4aa39701ec2bd012b79d9493910

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Wed Nov 15 22:41:12 2017 +0100

mesa: further reduce the size of ctx->Texture

Reviewed-by: Brian Paul <brianp at vmware.com>

---

 src/mesa/main/glheader.h |  5 ++++-
 src/mesa/main/mtypes.h   | 44 ++++++++++++++++++++++----------------------
 2 files changed, 26 insertions(+), 23 deletions(-)

diff --git a/src/mesa/main/glheader.h b/src/mesa/main/glheader.h
index 7a4b4a08d3..a6e6b6a2e6 100644
--- a/src/mesa/main/glheader.h
+++ b/src/mesa/main/glheader.h
@@ -42,8 +42,11 @@
 extern "C" {
 #endif
 
+/* Custom Mesa types to save space. */
+typedef unsigned short GLenum16;
+typedef unsigned char GLbitfield8;
+typedef unsigned short GLbitfield16;
 
-typedef unsigned short GLenum16; /* custom Mesa type to save space */
 typedef int GLclampx;
 
 
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 3a4fdb57c1..23fe45920c 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1134,10 +1134,10 @@ struct gl_tex_env_combine_state
    /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
    GLenum16 OperandRGB[MAX_COMBINER_TERMS];
    GLenum16 OperandA[MAX_COMBINER_TERMS];
-   GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
-   GLuint ScaleShiftA;   /**< 0, 1 or 2 */
-   GLuint _NumArgsRGB;   /**< Number of inputs used for the RGB combiner */
-   GLuint _NumArgsA;     /**< Number of inputs used for the A combiner */
+   GLubyte ScaleShiftRGB; /**< 0, 1 or 2 */
+   GLubyte ScaleShiftA;   /**< 0, 1 or 2 */
+   GLubyte _NumArgsRGB;   /**< Number of inputs used for the RGB combiner */
+   GLubyte _NumArgsA;     /**< Number of inputs used for the A combiner */
 };
 
 
@@ -1268,7 +1268,7 @@ struct gl_tex_env_combine_packed
 struct gl_texgen
 {
    GLenum16 Mode;       /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
-   GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
+   GLbitfield8 _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
    GLfloat ObjectPlane[4];
    GLfloat EyePlane[4];
 };
@@ -1301,7 +1301,7 @@ struct gl_texture_unit
  */
 struct gl_fixedfunc_texture_unit
 {
-   GLbitfield Enabled;          /**< bitmask of TEXTURE_*_BIT flags */
+   GLbitfield16 Enabled;          /**< bitmask of TEXTURE_*_BIT flags */
 
    GLenum16 EnvMode;            /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
    GLclampf EnvColor[4];
@@ -1311,8 +1311,8 @@ struct gl_fixedfunc_texture_unit
    struct gl_texgen GenT;
    struct gl_texgen GenR;
    struct gl_texgen GenQ;
-   GLbitfield TexGenEnabled;	/**< Bitwise-OR of [STRQ]_BIT values */
-   GLbitfield _GenFlags;	/**< Bitwise-OR of Gen[STRQ]._ModeBit */
+   GLbitfield8 TexGenEnabled;	/**< Bitwise-OR of [STRQ]_BIT values */
+   GLbitfield8 _GenFlags;	/**< Bitwise-OR of Gen[STRQ]._ModeBit */
 
    /**
     * \name GL_EXT_texture_env_combine
@@ -1325,14 +1325,14 @@ struct gl_fixedfunc_texture_unit
     */
    struct gl_tex_env_combine_state _EnvMode;
 
+   /** Current compressed TexEnv & Combine state */
+   struct gl_tex_env_combine_packed _CurrentCombinePacked;
+
    /**
     * Currently enabled combiner state.  This will point to either
     * \c Combine or \c _EnvMode.
     */
    struct gl_tex_env_combine_state *_CurrentCombine;
-
-   /** Current compressed TexEnv & Combine state */
-   struct gl_tex_env_combine_packed _CurrentCombinePacked;
 };
 
 
@@ -1341,33 +1341,33 @@ struct gl_fixedfunc_texture_unit
  */
 struct gl_texture_attrib
 {
-   GLuint CurrentUnit;   /**< GL_ACTIVE_TEXTURE */
-
-   /** GL_ARB_seamless_cubemap */
-   GLboolean CubeMapSeamless;
-
    struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
 
    /** GL_ARB_texture_buffer_object */
    struct gl_buffer_object *BufferObject;
 
+   GLuint CurrentUnit;   /**< GL_ACTIVE_TEXTURE */
+
    /** Texture coord units/sets used for fragment texturing */
-   GLbitfield _EnabledCoordUnits;
+   GLbitfield8 _EnabledCoordUnits;
 
    /** Texture coord units that have texgen enabled */
-   GLbitfield _TexGenEnabled;
+   GLbitfield8 _TexGenEnabled;
 
    /** Texture coord units that have non-identity matrices */
-   GLbitfield _TexMatEnabled;
+   GLbitfield8 _TexMatEnabled;
 
    /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
-   GLbitfield _GenFlags;
+   GLbitfield8 _GenFlags;
 
    /** Largest index of a texture unit with _Current != NULL. */
-   GLint _MaxEnabledTexImageUnit;
+   GLshort _MaxEnabledTexImageUnit;
 
    /** Largest index + 1 of texture units that have had any CurrentTex set. */
-   GLint NumCurrentTexUsed;
+   GLubyte NumCurrentTexUsed;
+
+   /** GL_ARB_seamless_cubemap */
+   GLboolean CubeMapSeamless;
 
    struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
    struct gl_fixedfunc_texture_unit FixedFuncUnit[MAX_TEXTURE_COORD_UNITS];