mesa: Use floats for viewport bounds.

ARB_viewport_array specifies that DEPTH_RANGE consists of double-
precision parameters (corresponding commit d4dc35987), and a preparatory
commit (6340e609a) added _mesa_get_viewport_xform() which returned
double-precision scale[3] and translate[3] vectors, even though X, Y,
Width, and Height were still floats.

All users of _mesa_get_viewport_xform() immediately convert the double
scale and translation vectors into floats (which were floats originally,
but were converted to doubles in _mesa_get_viewport_xform(), sigh).

i965 at least cannot consume doubles (see SF_CLIP_VIEWPORT). If we want
to pass doubles to hardware, we should have a different function that
does that.

Acked-by: Mathias Froehlich <Mathias.Froehlich@web.de>

14 files changed, 22 insertions, 22 deletions

diff --git a/src/mesa/drivers/dri/i915/i915_state.c b/src/mesa/drivers/dri/i915/i915_state.c
index 5f10b840b1..4c83073e69 100644
--- a/src/mesa/drivers/dri/i915/i915_state.c
+++ b/src/mesa/drivers/dri/i915/i915_state.c
@@ -402,7 +402,7 @@ void
 intelCalcViewport(struct gl_context * ctx)
 {
    struct intel_context *intel = intel_context(ctx);
-   double scale[3], translate[3];
+   float scale[3], translate[3];
 
    _mesa_get_viewport_xform(ctx, 0, scale, translate);
 
diff --git a/src/mesa/drivers/dri/i965/brw_sf_state.c b/src/mesa/drivers/dri/i965/brw_sf_state.c
index 5d9892214a..3be6e4ab8e 100644
--- a/src/mesa/drivers/dri/i965/brw_sf_state.c
+++ b/src/mesa/drivers/dri/i965/brw_sf_state.c
@@ -45,7 +45,7 @@ static void upload_sf_vp(struct brw_context *brw)
    struct gl_context *ctx = &brw->ctx;
    struct brw_sf_viewport *sfv;
    GLfloat y_scale, y_bias;
-   double scale[3], translate[3];
+   float scale[3], translate[3];
    const bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
 
    sfv = brw_state_batch(brw, AUB_TRACE_SF_VP_STATE,
diff --git a/src/mesa/drivers/dri/i965/gen6_viewport_state.c b/src/mesa/drivers/dri/i965/gen6_viewport_state.c
index 7c8d8849f4..11b9a360ce 100644
--- a/src/mesa/drivers/dri/i965/gen6_viewport_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_viewport_state.c
@@ -101,7 +101,7 @@ gen6_upload_sf_vp(struct brw_context *brw)
    }
 
    for (unsigned i = 0; i < ctx->Const.MaxViewports; i++) {
-      double scale[3], translate[3];
+      float scale[3], translate[3];
 
       /* _NEW_VIEWPORT */
       _mesa_get_viewport_xform(ctx, i, scale, translate);
diff --git a/src/mesa/drivers/dri/i965/gen7_viewport_state.c b/src/mesa/drivers/dri/i965/gen7_viewport_state.c
index b655205ec3..c75dc9964b 100644
--- a/src/mesa/drivers/dri/i965/gen7_viewport_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_viewport_state.c
@@ -53,7 +53,7 @@ gen7_upload_sf_clip_viewport(struct brw_context *brw)
    }
 
    for (unsigned i = 0; i < ctx->Const.MaxViewports; i++) {
-      double scale[3], translate[3];
+      float scale[3], translate[3];
       _mesa_get_viewport_xform(ctx, i, scale, translate);
 
       /* According to the "Vertex X,Y Clamping and Quantization" section of
diff --git a/src/mesa/drivers/dri/i965/gen8_viewport_state.c b/src/mesa/drivers/dri/i965/gen8_viewport_state.c
index 2d8eeb1f10..2692ad5599 100644
--- a/src/mesa/drivers/dri/i965/gen8_viewport_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_viewport_state.c
@@ -53,7 +53,7 @@ gen8_upload_sf_clip_viewport(struct brw_context *brw)
    }
 
    for (unsigned i = 0; i < ctx->Const.MaxViewports; i++) {
-      double scale[3], translate[3];
+      float scale[3], translate[3];
       _mesa_get_viewport_xform(ctx, i, scale, translate);
 
       /* _NEW_VIEWPORT: Viewport Matrix Elements */
diff --git a/src/mesa/drivers/dri/r200/r200_state.c b/src/mesa/drivers/dri/r200/r200_state.c
index 2023ba0944..cca176d7f9 100644
--- a/src/mesa/drivers/dri/r200/r200_state.c
+++ b/src/mesa/drivers/dri/r200/r200_state.c
@@ -1546,7 +1546,7 @@ void r200UpdateWindow( struct gl_context *ctx )
    GLfloat xoffset = 0;
    GLfloat yoffset = dPriv ? (GLfloat) dPriv->h : 0;
    const GLboolean render_to_fbo = (ctx->DrawBuffer ? _mesa_is_user_fbo(ctx->DrawBuffer) : 0);
-   double scale[3], translate[3];
+   float scale[3], translate[3];
    GLfloat y_scale, y_bias;
 
    if (render_to_fbo) {
diff --git a/src/mesa/drivers/dri/radeon/radeon_state.c b/src/mesa/drivers/dri/radeon/radeon_state.c
index 156afb6f6a..74c1fc6c90 100644
--- a/src/mesa/drivers/dri/radeon/radeon_state.c
+++ b/src/mesa/drivers/dri/radeon/radeon_state.c
@@ -1354,7 +1354,7 @@ void radeonUpdateWindow( struct gl_context *ctx )
    GLfloat xoffset = 0.0;
    GLfloat yoffset = dPriv ? (GLfloat) dPriv->h : 0;
    const GLboolean render_to_fbo = (ctx->DrawBuffer ? _mesa_is_user_fbo(ctx->DrawBuffer) : 0);
-   double scale[3], translate[3];
+   float scale[3], translate[3];
    GLfloat y_scale, y_bias;
 
    if (render_to_fbo) {
diff --git a/src/mesa/main/viewport.c b/src/mesa/main/viewport.c
index 9917f2de29..7d8914291c 100644
--- a/src/mesa/main/viewport.c
+++ b/src/mesa/main/viewport.c
@@ -443,12 +443,12 @@ _mesa_ClipControl(GLenum origin, GLenum depth)
  */
 void
 _mesa_get_viewport_xform(struct gl_context *ctx, unsigned i,
-                         double scale[3], double translate[3])
+                         float scale[3], float translate[3])
 {
-   double x = ctx->ViewportArray[i].X;
-   double y = ctx->ViewportArray[i].Y;
-   double half_width = 0.5*ctx->ViewportArray[i].Width;
-   double half_height = 0.5*ctx->ViewportArray[i].Height;
+   float x = ctx->ViewportArray[i].X;
+   float y = ctx->ViewportArray[i].Y;
+   float half_width = 0.5f * ctx->ViewportArray[i].Width;
+   float half_height = 0.5f * ctx->ViewportArray[i].Height;
    double n = ctx->ViewportArray[i].Near;
    double f = ctx->ViewportArray[i].Far;
 
@@ -462,8 +462,8 @@ _mesa_get_viewport_xform(struct gl_context *ctx, unsigned i,
       translate[1] = half_height + y;
    }
    if (ctx->Transform.ClipDepthMode == GL_NEGATIVE_ONE_TO_ONE) {
-      scale[2] = 0.5*(f - n);
-      translate[2] = 0.5*(n + f);
+      scale[2] = 0.5 * (f - n);
+      translate[2] = 0.5 * (n + f);
    } else {
       scale[2] = f - n;
       translate[2] = n;
diff --git a/src/mesa/main/viewport.h b/src/mesa/main/viewport.h
index 899dc2d0bc..b0675db109 100644
--- a/src/mesa/main/viewport.h
+++ b/src/mesa/main/viewport.h
@@ -73,6 +73,6 @@ _mesa_ClipControl(GLenum origin, GLenum depth);
 
 extern void
 _mesa_get_viewport_xform(struct gl_context *ctx, unsigned i,
-                         double scale[3], double translate[3]);
+                         float scale[3], float translate[3]);
 
 #endif
diff --git a/src/mesa/math/m_matrix.c b/src/mesa/math/m_matrix.c
index ecf564c008..6a42c6c0ed 100644
--- a/src/mesa/math/m_matrix.c
+++ b/src/mesa/math/m_matrix.c
@@ -1111,8 +1111,8 @@ _math_matrix_translate( GLmatrix *mat, GLfloat x, GLfloat y, GLfloat z )
  * Transforms Normalized Device Coords to window/Z values.
  */
 void
-_math_matrix_viewport(GLmatrix *m, const double scale[3],
-                      const double translate[3], double depthMax)
+_math_matrix_viewport(GLmatrix *m, const float scale[3],
+                      const float translate[3], double depthMax)
 {
    m->m[MAT_SX] = scale[0];
    m->m[MAT_TX] = translate[0];
diff --git a/src/mesa/math/m_matrix.h b/src/mesa/math/m_matrix.h
index 778d716dce..c34d9e3022 100644
--- a/src/mesa/math/m_matrix.h
+++ b/src/mesa/math/m_matrix.h
@@ -122,8 +122,8 @@ _math_matrix_frustum( GLmatrix *mat,
 		      GLfloat nearval, GLfloat farval );
 
 extern void
-_math_matrix_viewport( GLmatrix *m, const double scale[3],
-                       const double translate[3], double depthMax );
+_math_matrix_viewport( GLmatrix *m, const float scale[3],
+                       const float translate[3], double depthMax );
 
 extern void
 _math_matrix_set_identity( GLmatrix *dest );
diff --git a/src/mesa/state_tracker/st_atom_viewport.c b/src/mesa/state_tracker/st_atom_viewport.c
index 2f62590c4f..9a692cecad 100644
--- a/src/mesa/state_tracker/st_atom_viewport.c
+++ b/src/mesa/state_tracker/st_atom_viewport.c
@@ -64,7 +64,7 @@ update_viewport( struct st_context *st )
     */
    for (i = 0; i < ctx->Const.MaxViewports; i++)
    {
-      double scale[3], translate[3];
+      float scale[3], translate[3];
       _mesa_get_viewport_xform(ctx, i, scale, translate);
 
       st->state.viewport[i].scale[0] = scale[0];
diff --git a/src/mesa/tnl/t_context.c b/src/mesa/tnl/t_context.c
index bc77ba8bf9..b5c0b3e1f5 100644
--- a/src/mesa/tnl/t_context.c
+++ b/src/mesa/tnl/t_context.c
@@ -190,7 +190,7 @@ _tnl_InvalidateState( struct gl_context *ctx, GLuint new_state )
    }
 
    if (new_state & (_NEW_VIEWPORT | _NEW_BUFFERS)) {
-      double scale[3], translate[3];
+      float scale[3], translate[3];
       _mesa_get_viewport_xform(ctx, 0, scale, translate);
       _math_matrix_viewport(&tnl->_WindowMap, scale, translate,
                             ctx->DrawBuffer->_DepthMaxF);
diff --git a/src/mesa/tnl/t_rasterpos.c b/src/mesa/tnl/t_rasterpos.c
index d4b45bac9a..7ef50ea7cd 100644
--- a/src/mesa/tnl/t_rasterpos.c
+++ b/src/mesa/tnl/t_rasterpos.c
@@ -378,7 +378,7 @@ _tnl_RasterPos(struct gl_context *ctx, const GLfloat vObj[4])
       GLfloat eye[4], clip[4], ndc[3], d;
       GLfloat *norm, eyenorm[3];
       GLfloat *objnorm = ctx->Current.Attrib[VERT_ATTRIB_NORMAL];
-      double scale[3], translate[3];
+      float scale[3], translate[3];
 
       /* apply modelview matrix:  eye = MV * obj */
       TRANSFORM_POINT( eye, ctx->ModelviewMatrixStack.Top->m, vObj );