meta: Expand the vertex structure for the Clear paths

Another step leading to some code sharing.  Note that the new Clear
vertex structure is the same as the new BlitFramebuffer and CopyPixels
vertex structure.

The "sizeof(float) * 7" hack is temporary.  It will magically disappear
in a just a couple more patches.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index ff87c84..e9113e9 100644 (file)
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -2037,7 +2037,7 @@ _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)
 {
    struct clear_state *clear = &ctx->Meta->Clear;
    struct vertex {
-      GLfloat x, y, z, r, g, b, a;
+      GLfloat x, y, z, tex[4];
    };
    struct vertex verts[4];
    /* save all state but scissor, pixel pack/unpack */
@@ -2068,7 +2068,7 @@ _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)
 
       /* setup vertex arrays */
       _mesa_VertexPointer(3, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
-      _mesa_ColorPointer(4, GL_FLOAT, sizeof(struct vertex), OFFSET(r));
+      _mesa_ColorPointer(4, GL_FLOAT, sizeof(struct vertex), OFFSET(tex));
       _mesa_EnableClientState(GL_VERTEX_ARRAY);
       _mesa_EnableClientState(GL_COLOR_ARRAY);
    }
@@ -2137,10 +2137,10 @@ _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)
 
       /* vertex colors */
       for (i = 0; i < 4; i++) {
-         verts[i].r = ctx->Color.ClearColor.f[0];
-         verts[i].g = ctx->Color.ClearColor.f[1];
-         verts[i].b = ctx->Color.ClearColor.f[2];
-         verts[i].a = ctx->Color.ClearColor.f[3];
+         verts[i].tex[0] = ctx->Color.ClearColor.f[0];
+         verts[i].tex[1] = ctx->Color.ClearColor.f[1];
+         verts[i].tex[2] = ctx->Color.ClearColor.f[2];
+         verts[i].tex[3] = ctx->Color.ClearColor.f[3];
       }
 
       /* upload new vertex data */
@@ -2200,7 +2200,8 @@ meta_glsl_clear_init(struct gl_context *ctx, struct clear_state *clear)
    _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, clear->VBO);
 
    /* setup vertex arrays */
-   _mesa_VertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void *)0);
+   _mesa_VertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 7,
+                             (void *)0);
    _mesa_EnableVertexAttribArray(0);
 
    vs = _mesa_CreateShaderObjectARB(GL_VERTEX_SHADER);
@@ -2328,7 +2329,7 @@ _mesa_meta_glsl_Clear(struct gl_context *ctx, GLbitfield buffers)
    const float y1 = ((float)fb->_Ymax / fb->Height) * 2.0f - 1.0f;
    const float z = -invert_z(ctx->Depth.Clear);
    struct vertex {
-      GLfloat x, y, z;
+      GLfloat x, y, z, tex[4];
    } verts[4];
 
    metaSave = (MESA_META_ALPHA_TEST |