Merge branch 'vertex_array_bgra'

4 files changed, 105 insertions, 93 deletions

diff --git a/src/mesa/main/arrayobj.c b/src/mesa/main/arrayobj.c
index f3f482f8c8..b04095fd16 100644
--- a/src/mesa/main/arrayobj.c
+++ b/src/mesa/main/arrayobj.c
@@ -98,6 +98,28 @@ _mesa_delete_array_object( GLcontext *ctx, struct gl_array_object *obj )
 }
 
 
+static void
+init_array(GLcontext *ctx,
+           struct gl_client_array *array, GLint size, GLint type)
+{
+   array->Size = size;
+   array->Type = type;
+   array->Format = GL_RGBA; /* only significant for GL_EXT_vertex_array_bgra */
+   array->Stride = 0;
+   array->StrideB = 0;
+   array->Ptr = NULL;
+   array->Enabled = GL_FALSE;
+   array->Normalized = GL_FALSE;
+#if FEATURE_ARB_vertex_buffer_object
+   /* Vertex array buffers */
+   array->BufferObj = ctx->Array.NullBufferObj;
+#endif
+}
+
+
+/**
+ * Initialize a gl_array_object's arrays.
+ */
 void
 _mesa_initialize_array_object( GLcontext *ctx,
 			       struct gl_array_object *obj,
@@ -107,87 +129,23 @@ _mesa_initialize_array_object( GLcontext *ctx,
 
    obj->Name = name;
 
-   /* Vertex arrays */
-   obj->Vertex.Size = 4;
-   obj->Vertex.Type = GL_FLOAT;
-   obj->Vertex.Stride = 0;
-   obj->Vertex.StrideB = 0;
-   obj->Vertex.Ptr = NULL;
-   obj->Vertex.Enabled = GL_FALSE;
-   obj->Normal.Type = GL_FLOAT;
-   obj->Normal.Stride = 0;
-   obj->Normal.StrideB = 0;
-   obj->Normal.Ptr = NULL;
-   obj->Normal.Enabled = GL_FALSE;
-   obj->Color.Size = 4;
-   obj->Color.Type = GL_FLOAT;
-   obj->Color.Stride = 0;
-   obj->Color.StrideB = 0;
-   obj->Color.Ptr = NULL;
-   obj->Color.Enabled = GL_FALSE;
-   obj->SecondaryColor.Size = 4;
-   obj->SecondaryColor.Type = GL_FLOAT;
-   obj->SecondaryColor.Stride = 0;
-   obj->SecondaryColor.StrideB = 0;
-   obj->SecondaryColor.Ptr = NULL;
-   obj->SecondaryColor.Enabled = GL_FALSE;
-   obj->FogCoord.Size = 1;
-   obj->FogCoord.Type = GL_FLOAT;
-   obj->FogCoord.Stride = 0;
-   obj->FogCoord.StrideB = 0;
-   obj->FogCoord.Ptr = NULL;
-   obj->FogCoord.Enabled = GL_FALSE;
-   obj->Index.Type = GL_FLOAT;
-   obj->Index.Stride = 0;
-   obj->Index.StrideB = 0;
-   obj->Index.Ptr = NULL;
-   obj->Index.Enabled = GL_FALSE;
+   /* Init the individual arrays */
+   init_array(ctx, &obj->Vertex, 4, GL_FLOAT);
+   init_array(ctx, &obj->Normal, 3, GL_FLOAT);
+   init_array(ctx, &obj->Color, 4, GL_FLOAT);
+   init_array(ctx, &obj->SecondaryColor, 4, GL_FLOAT);
+   init_array(ctx, &obj->FogCoord, 1, GL_FLOAT);
+   init_array(ctx, &obj->Index, 1, GL_FLOAT);
    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
-      obj->TexCoord[i].Size = 4;
-      obj->TexCoord[i].Type = GL_FLOAT;
-      obj->TexCoord[i].Stride = 0;
-      obj->TexCoord[i].StrideB = 0;
-      obj->TexCoord[i].Ptr = NULL;
-      obj->TexCoord[i].Enabled = GL_FALSE;
+      init_array(ctx, &obj->TexCoord[i], 4, GL_FLOAT);
    }
-   obj->EdgeFlag.Stride = 0;
-   obj->EdgeFlag.StrideB = 0;
-   obj->EdgeFlag.Ptr = NULL;
-   obj->EdgeFlag.Enabled = GL_FALSE;
+   init_array(ctx, &obj->EdgeFlag, 1, GL_BOOL);
    for (i = 0; i < VERT_ATTRIB_MAX; i++) {
-      obj->VertexAttrib[i].Size = 4;
-      obj->VertexAttrib[i].Type = GL_FLOAT;
-      obj->VertexAttrib[i].Stride = 0;
-      obj->VertexAttrib[i].StrideB = 0;
-      obj->VertexAttrib[i].Ptr = NULL;
-      obj->VertexAttrib[i].Enabled = GL_FALSE;
-      obj->VertexAttrib[i].Normalized = GL_FALSE;
+      init_array(ctx, &obj->VertexAttrib[i], 4, GL_FLOAT);
    }
 
 #if FEATURE_point_size_array
-   obj->PointSize.Type = GL_FLOAT;
-   obj->PointSize.Stride = 0;
-   obj->PointSize.StrideB = 0;
-   obj->PointSize.Ptr = NULL;
-   obj->PointSize.Enabled = GL_FALSE;
-   obj->PointSize.BufferObj = ctx->Array.NullBufferObj;
-#endif
-
-#if FEATURE_ARB_vertex_buffer_object
-   /* Vertex array buffers */
-   obj->Vertex.BufferObj = ctx->Array.NullBufferObj;
-   obj->Normal.BufferObj = ctx->Array.NullBufferObj;
-   obj->Color.BufferObj = ctx->Array.NullBufferObj;
-   obj->SecondaryColor.BufferObj = ctx->Array.NullBufferObj;
-   obj->FogCoord.BufferObj = ctx->Array.NullBufferObj;
-   obj->Index.BufferObj = ctx->Array.NullBufferObj;
-   for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
-      obj->TexCoord[i].BufferObj = ctx->Array.NullBufferObj;
-   }
-   obj->EdgeFlag.BufferObj = ctx->Array.NullBufferObj;
-   for (i = 0; i < VERT_ATTRIB_MAX; i++) {
-      obj->VertexAttrib[i].BufferObj = ctx->Array.NullBufferObj;
-   }
+   init_array(ctx, &obj->PointSize, 1, GL_FLOAT);
 #endif
 }
 
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 738fda34dd..43c9d4a788 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -129,6 +129,7 @@ static const struct {
    { OFF, "GL_EXT_texture_sRGB",               F(EXT_texture_sRGB) },
    { OFF, "GL_EXT_timer_query",                F(EXT_timer_query) },
    { ON,  "GL_EXT_vertex_array",               F(EXT_vertex_array) },
+   { OFF, "GL_EXT_vertex_array_bgra",          F(EXT_vertex_array_bgra) },
    { OFF, "GL_EXT_vertex_array_set",           F(EXT_vertex_array_set) },
    { OFF, "GL_3DFX_texture_compression_FXT1",  F(TDFX_texture_compression_FXT1) },
    { OFF, "GL_APPLE_client_storage",           F(APPLE_client_storage) },
@@ -271,6 +272,7 @@ _mesa_enable_sw_extensions(GLcontext *ctx)
 #if FEATURE_EXT_texture_sRGB
    ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
 #endif
+   ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
    ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;
    ctx->Extensions.MESA_pack_invert = GL_TRUE;
 #if FEATURE_MESA_program_debug
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 088d45b156..39c988f3c8 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1675,6 +1675,7 @@ struct gl_client_array
 {
    GLint Size;                  /**< components per element (1,2,3,4) */
    GLenum Type;                 /**< datatype: GL_FLOAT, GL_INT, etc */
+   GLenum Format;               /**< default: GL_RGBA, but may be GL_BGRA */
    GLsizei Stride;		/**< user-specified stride */
    GLsizei StrideB;		/**< actual stride in bytes */
    const GLubyte *Ptr;          /**< Points to array data */
@@ -2625,6 +2626,7 @@ struct gl_extensions
    GLboolean EXT_texture_sRGB;
    GLboolean EXT_timer_query;
    GLboolean EXT_vertex_array;
+   GLboolean EXT_vertex_array_bgra;
    GLboolean EXT_vertex_array_set;
    /* vendor extensions */
    GLboolean APPLE_client_storage;
diff --git a/src/mesa/main/varray.c b/src/mesa/main/varray.c
index 9d9b28b518..106252e460 100644
--- a/src/mesa/main/varray.c
+++ b/src/mesa/main/varray.c
@@ -52,11 +52,13 @@
 static void
 update_array(GLcontext *ctx, struct gl_client_array *array,
              GLbitfield dirtyBit, GLsizei elementSize,
-             GLint size, GLenum type,
+             GLint size, GLenum type, GLenum format,
              GLsizei stride, GLboolean normalized, const GLvoid *ptr)
 {
+   ASSERT(format == GL_RGBA || format == GL_BGRA);
    array->Size = size;
    array->Type = type;
+   array->Format = format;
    array->Stride = stride;
    array->StrideB = stride ? stride : elementSize;
    array->Normalized = normalized;
@@ -132,7 +134,7 @@ _mesa_VertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
    }
 
    update_array(ctx, &ctx->Array.ArrayObj->Vertex, _NEW_ARRAY_VERTEX,
-                elementSize, size, type, stride, GL_FALSE, ptr);
+                elementSize, size, type, GL_RGBA, stride, GL_FALSE, ptr);
 
    if (ctx->Driver.VertexPointer)
       ctx->Driver.VertexPointer( ctx, size, type, stride, ptr );
@@ -182,7 +184,7 @@ _mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr )
    }
 
    update_array(ctx, &ctx->Array.ArrayObj->Normal, _NEW_ARRAY_NORMAL,
-                elementSize, 3, type, stride, GL_TRUE, ptr);
+                elementSize, 3, type, GL_RGBA, stride, GL_TRUE, ptr);
 
    if (ctx->Driver.NormalPointer)
       ctx->Driver.NormalPointer( ctx, type, stride, ptr );
@@ -193,12 +195,15 @@ void GLAPIENTRY
 _mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 {
    GLsizei elementSize;
+   GLenum format;
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    if (size < 3 || size > 4) {
-      _mesa_error( ctx, GL_INVALID_VALUE, "glColorPointer(size)" );
-      return;
+      if (!ctx->Extensions.EXT_vertex_array_bgra || size != GL_BGRA) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glColorPointer(size)");
+         return;
+      }
    }
    if (stride < 0) {
       _mesa_error( ctx, GL_INVALID_VALUE, "glColorPointer(stride)" );
@@ -209,6 +214,18 @@ _mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
       _mesa_debug(ctx, "glColorPointer( sz %d type %s stride %d )\n", size,
                   _mesa_lookup_enum_by_nr( type ), stride);
 
+   if (size == GL_BGRA) {
+      if (type != GL_UNSIGNED_BYTE) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glColorPointer(GL_BGRA/GLubyte)");
+         return;
+      }
+      format = GL_BGRA;
+      size = 4;
+   }
+   else {
+      format = GL_RGBA;
+   }
+
    switch (type) {
       case GL_BYTE:
          elementSize = size * sizeof(GLbyte);
@@ -245,7 +262,7 @@ _mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
    }
 
    update_array(ctx, &ctx->Array.ArrayObj->Color, _NEW_ARRAY_COLOR0,
-                elementSize, size, type, stride, GL_TRUE, ptr);
+                elementSize, size, type, format, stride, GL_TRUE, ptr);
 
    if (ctx->Driver.ColorPointer)
       ctx->Driver.ColorPointer( ctx, size, type, stride, ptr );
@@ -277,7 +294,7 @@ _mesa_FogCoordPointerEXT(GLenum type, GLsizei stride, const GLvoid *ptr)
    }
 
    update_array(ctx, &ctx->Array.ArrayObj->FogCoord, _NEW_ARRAY_FOGCOORD,
-                elementSize, 1, type, stride, GL_FALSE, ptr);
+                elementSize, 1, type, GL_RGBA, stride, GL_FALSE, ptr);
 
    if (ctx->Driver.FogCoordPointer)
       ctx->Driver.FogCoordPointer( ctx, type, stride, ptr );
@@ -318,7 +335,7 @@ _mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr)
    }
 
    update_array(ctx, &ctx->Array.ArrayObj->Index, _NEW_ARRAY_INDEX,
-                elementSize, 1, type, stride, GL_FALSE, ptr);
+                elementSize, 1, type, GL_RGBA, stride, GL_FALSE, ptr);
 
    if (ctx->Driver.IndexPointer)
       ctx->Driver.IndexPointer( ctx, type, stride, ptr );
@@ -330,12 +347,15 @@ _mesa_SecondaryColorPointerEXT(GLint size, GLenum type,
 			       GLsizei stride, const GLvoid *ptr)
 {
    GLsizei elementSize;
+   GLenum format;
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    if (size != 3 && size != 4) {
-      _mesa_error( ctx, GL_INVALID_VALUE, "glSecondaryColorPointer(size)" );
-      return;
+      if (!ctx->Extensions.EXT_vertex_array_bgra || size != GL_BGRA) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glSecondaryColorPointer(size)");
+         return;
+      }
    }
    if (stride < 0) {
       _mesa_error( ctx, GL_INVALID_VALUE, "glSecondaryColorPointer(stride)" );
@@ -346,6 +366,18 @@ _mesa_SecondaryColorPointerEXT(GLint size, GLenum type,
       _mesa_debug(ctx, "glSecondaryColorPointer( sz %d type %s stride %d )\n",
                   size, _mesa_lookup_enum_by_nr( type ), stride);
 
+   if (size == GL_BGRA) {
+      if (type != GL_UNSIGNED_BYTE) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glColorPointer(GL_BGRA/GLubyte)");
+         return;
+      }
+      format = GL_BGRA;
+      size = 4;
+   }
+   else {
+      format = GL_RGBA;
+   }
+
    switch (type) {
       case GL_BYTE:
          elementSize = size * sizeof(GLbyte);
@@ -377,7 +409,7 @@ _mesa_SecondaryColorPointerEXT(GLint size, GLenum type,
    }
 
    update_array(ctx, &ctx->Array.ArrayObj->SecondaryColor, _NEW_ARRAY_COLOR1,
-                elementSize, size, type, stride, GL_TRUE, ptr);
+                elementSize, size, type, format, stride, GL_TRUE, ptr);
 
    if (ctx->Driver.SecondaryColorPointer)
       ctx->Driver.SecondaryColorPointer( ctx, size, type, stride, ptr );
@@ -437,7 +469,7 @@ _mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
 
    update_array(ctx, &ctx->Array.ArrayObj->TexCoord[unit],
                 _NEW_ARRAY_TEXCOORD(unit),
-                elementSize, size, type, stride, GL_FALSE, ptr);
+                elementSize, size, type, GL_RGBA, stride, GL_FALSE, ptr);
 
    if (ctx->Driver.TexCoordPointer)
       ctx->Driver.TexCoordPointer( ctx, size, type, stride, ptr );
@@ -456,7 +488,8 @@ _mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr)
    }
 
    update_array(ctx, &ctx->Array.ArrayObj->EdgeFlag, _NEW_ARRAY_EDGEFLAG,
-                sizeof(GLboolean), 1, GL_UNSIGNED_BYTE, stride, GL_FALSE, ptr);
+                sizeof(GLboolean), 1, GL_UNSIGNED_BYTE, GL_RGBA,
+                stride, GL_FALSE, ptr);
 
    if (ctx->Driver.EdgeFlagPointer)
       ctx->Driver.EdgeFlagPointer( ctx, stride, ptr );
@@ -490,7 +523,7 @@ _mesa_PointSizePointer(GLenum type, GLsizei stride, const GLvoid *ptr)
    }
 
    update_array(ctx, &ctx->Array.ArrayObj->PointSize, _NEW_ARRAY_POINT_SIZE,
-                elementSize, 1, type, stride, GL_FALSE, ptr);
+                elementSize, 1, type, GL_RGBA, stride, GL_FALSE, ptr);
 }
 
 
@@ -546,7 +579,7 @@ _mesa_VertexAttribPointerNV(GLuint index, GLint size, GLenum type,
 
    update_array(ctx, &ctx->Array.ArrayObj->VertexAttrib[index],
                 _NEW_ARRAY_ATTRIB(index),
-                elementSize, size, type, stride, normalized, ptr);
+                elementSize, size, type, GL_RGBA, stride, normalized, ptr);
 
    if (ctx->Driver.VertexAttribPointer)
       ctx->Driver.VertexAttribPointer( ctx, index, size, type, stride, ptr );
@@ -561,6 +594,7 @@ _mesa_VertexAttribPointerARB(GLuint index, GLint size, GLenum type,
                              GLsizei stride, const GLvoid *ptr)
 {
    GLsizei elementSize;
+   GLenum format;
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
@@ -570,8 +604,10 @@ _mesa_VertexAttribPointerARB(GLuint index, GLint size, GLenum type,
    }
 
    if (size < 1 || size > 4) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerARB(size)");
-      return;
+      if (!ctx->Extensions.EXT_vertex_array_bgra || size != GL_BGRA) {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerARB(size)");
+         return;
+      }
    }
 
    if (stride < 0) {
@@ -579,6 +615,20 @@ _mesa_VertexAttribPointerARB(GLuint index, GLint size, GLenum type,
       return;
    }
 
+   if (size == GL_BGRA) {
+      if (type != GL_UNSIGNED_BYTE) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glVertexAttribPointerARB(GL_BGRA/type)");
+         return;
+      }
+      format = GL_BGRA;
+      size = 4;
+      normalized = GL_TRUE;
+   }
+   else {
+      format = GL_RGBA;
+   }
+
    /* check for valid 'type' and compute StrideB right away */
    /* NOTE: more types are supported here than in the NV extension */
    switch (type) {
@@ -618,7 +668,7 @@ _mesa_VertexAttribPointerARB(GLuint index, GLint size, GLenum type,
 
    update_array(ctx, &ctx->Array.ArrayObj->VertexAttrib[index],
                 _NEW_ARRAY_ATTRIB(index),
-                elementSize, size, type, stride, normalized, ptr);
+                elementSize, size, type, GL_RGBA, stride, normalized, ptr);
 
    if (ctx->Driver.VertexAttribPointer)
       ctx->Driver.VertexAttribPointer(ctx, index, size, type, stride, ptr);