mesa: Add an index parameter to _mesa_set_viewport

Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

4 files changed, 23 insertions, 19 deletions

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 48203c7e4a7..9a8f7a5a2d5 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -746,7 +746,7 @@ _mesa_meta_begin(struct gl_context *ctx, GLbitfield state)
           ctx->ViewportArray[0].Y != 0 ||
           ctx->ViewportArray[0].Width != (float) ctx->DrawBuffer->Width ||
           ctx->ViewportArray[0].Height != (float) ctx->DrawBuffer->Height) {
-         _mesa_set_viewport(ctx, 0, 0,
+         _mesa_set_viewport(ctx, 0, 0, 0,
                             ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);
       }
       /* save depth range state */
@@ -1093,7 +1093,7 @@ _mesa_meta_end(struct gl_context *ctx)
           save->ViewportY != ctx->ViewportArray[0].Y ||
           save->ViewportW != ctx->ViewportArray[0].Width ||
           save->ViewportH != ctx->ViewportArray[0].Height) {
-         _mesa_set_viewport(ctx, save->ViewportX, save->ViewportY,
+         _mesa_set_viewport(ctx, 0, save->ViewportX, save->ViewportY,
                             save->ViewportW, save->ViewportH);
       }
       _mesa_DepthRange(save->DepthNear, save->DepthFar);
@@ -1761,7 +1761,7 @@ blitframebuffer_texture(struct gl_context *ctx,
          }
 
          /* setup viewport */
-         _mesa_set_viewport(ctx, dstX, dstY, dstW, dstH);
+         _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
          _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
          _mesa_DepthMask(GL_FALSE);
          _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
@@ -1916,7 +1916,7 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx,
          _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
       }
 
-      _mesa_set_viewport(ctx, dstX, dstY, dstW, dstH);
+      _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
       _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
       _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_FALSE);
       _mesa_DepthMask(GL_FALSE);
@@ -1965,7 +1965,7 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx,
          _mesa_DepthFunc(GL_ALWAYS);
          _mesa_DepthMask(GL_TRUE);
 
-         _mesa_set_viewport(ctx, dstX, dstY, dstW, dstH);
+         _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
          _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
          _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
          mask &= ~GL_DEPTH_BUFFER_BIT;
@@ -3782,7 +3782,7 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target,
       assert(dstHeight == ctx->DrawBuffer->Height);
 
       /* setup viewport */
-      _mesa_set_viewport(ctx, 0, 0, dstWidth, dstHeight);
+      _mesa_set_viewport(ctx, 0, 0, 0, dstWidth, dstHeight);
 
       _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
    }
@@ -4072,7 +4072,7 @@ decompress_texture_image(struct gl_context *ctx,
    _mesa_MatrixMode(GL_PROJECTION);
    _mesa_LoadIdentity();
    _mesa_Ortho(0.0, width, 0.0, height, -1.0, 1.0);
-   _mesa_set_viewport(ctx, 0, 0, width, height);
+   _mesa_set_viewport(ctx, 0, 0, 0, width, height);
 
    /* upload new vertex data */
    _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 5c67159e5a9..5af0c02cfa9 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1437,7 +1437,7 @@ _mesa_check_init_viewport(struct gl_context *ctx, GLuint width, GLuint height)
        * potential infinite recursion.
        */
       ctx->ViewportInitialized = GL_TRUE;
-      _mesa_set_viewport(ctx, 0, 0, width, height);
+      _mesa_set_viewport(ctx, 0, 0, 0, width, height);
       _mesa_set_scissor(ctx, 0, 0, width, height);
    }
 }
diff --git a/src/mesa/main/viewport.c b/src/mesa/main/viewport.c
index 360f066a966..d4b03936610 100644
--- a/src/mesa/main/viewport.c
+++ b/src/mesa/main/viewport.c
@@ -57,7 +57,7 @@ _mesa_Viewport(GLint x, GLint y, GLsizei width, GLsizei height)
       return;
    }
 
-   _mesa_set_viewport(ctx, x, y, width, height);
+   _mesa_set_viewport(ctx, 0, x, y, width, height);
 }
 
 
@@ -66,22 +66,23 @@ _mesa_Viewport(GLint x, GLint y, GLsizei width, GLsizei height)
  * matrix).  Usually called from _mesa_Viewport().
  * 
  * \param ctx GL context.
+ * \param idx    Index of the viewport to be updated.
  * \param x, y coordinates of the lower left corner of the viewport rectangle.
  * \param width width of the viewport rectangle.
  * \param height height of the viewport rectangle.
  */
 void
-_mesa_set_viewport(struct gl_context *ctx, GLint x, GLint y,
+_mesa_set_viewport(struct gl_context *ctx, unsigned idx, GLint x, GLint y,
                     GLsizei width, GLsizei height)
 {
    /* clamp width and height to the implementation dependent range */
    width  = MIN2(width, (GLsizei) ctx->Const.MaxViewportWidth);
    height = MIN2(height, (GLsizei) ctx->Const.MaxViewportHeight);
 
-   ctx->ViewportArray[0].X = x;
-   ctx->ViewportArray[0].Width = width;
-   ctx->ViewportArray[0].Y = y;
-   ctx->ViewportArray[0].Height = height;
+   ctx->ViewportArray[idx].X = x;
+   ctx->ViewportArray[idx].Width = width;
+   ctx->ViewportArray[idx].Y = y;
+   ctx->ViewportArray[idx].Height = height;
    ctx->NewState |= _NEW_VIEWPORT;
 
 #if 1
@@ -89,10 +90,13 @@ _mesa_set_viewport(struct gl_context *ctx, GLint x, GLint y,
     * the WindowMap matrix being up to date in the driver's Viewport
     * and DepthRange functions.
     */
-   _math_matrix_viewport(&ctx->ViewportArray[0]._WindowMap,
-                         ctx->ViewportArray[0].X, ctx->ViewportArray[0].Y,
-                         ctx->ViewportArray[0].Width, ctx->ViewportArray[0].Height,
-                         ctx->ViewportArray[0].Near, ctx->ViewportArray[0].Far,
+   _math_matrix_viewport(&ctx->ViewportArray[idx]._WindowMap,
+                         ctx->ViewportArray[idx].X,
+                         ctx->ViewportArray[idx].Y,
+                         ctx->ViewportArray[idx].Width,
+                         ctx->ViewportArray[idx].Height,
+                         ctx->ViewportArray[idx].Near,
+                         ctx->ViewportArray[idx].Far,
                          ctx->DrawBuffer->_DepthMaxF);
 #endif
 
diff --git a/src/mesa/main/viewport.h b/src/mesa/main/viewport.h
index ffa3a729ce0..b4eb5217cd1 100644
--- a/src/mesa/main/viewport.h
+++ b/src/mesa/main/viewport.h
@@ -36,7 +36,7 @@ _mesa_Viewport(GLint x, GLint y, GLsizei width, GLsizei height);
 
 
 extern void 
-_mesa_set_viewport(struct gl_context *ctx, GLint x, GLint y,
+_mesa_set_viewport(struct gl_context *ctx, unsigned idx, GLint x, GLint y,
                    GLsizei width, GLsizei height);