implement surfaces for softpipe rendering

3 files changed, 182 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i915tex/Makefile b/src/mesa/drivers/dri/i915tex/Makefile
index b218929dce..827acc0c46 100644
--- a/src/mesa/drivers/dri/i915tex/Makefile
+++ b/src/mesa/drivers/dri/i915tex/Makefile
@@ -48,6 +48,7 @@ DRIVER_SOURCES = \
 	intel_screen.c \
 	intel_span.c \
 	intel_state.c \
+	intel_surface.c \
 	intel_tris.c \
 	intel_fbo.c \
 	intel_depthstencil.c \
diff --git a/src/mesa/drivers/dri/i915tex/intel_fbo.h b/src/mesa/drivers/dri/i915tex/intel_fbo.h
index 963f5e706f..1642ce774f 100644
--- a/src/mesa/drivers/dri/i915tex/intel_fbo.h
+++ b/src/mesa/drivers/dri/i915tex/intel_fbo.h
@@ -29,9 +29,25 @@
 #define INTEL_FBO_H
 
 
+#include "pipe/p_state.h"
+#include "pipe/softpipe/sp_surface.h"
+
+
 struct intel_context;
 struct intel_region;
 
+
+/**
+ * Intel "pipe" surface.  This is kind of a temporary thing as
+ * renderbuffers and surfaces should eventually become one.
+ */
+struct intel_surface
+{
+   struct softpipe_surface surface;  /**< base class */
+   struct intel_renderbuffer *rb;    /**< ptr back to matching renderbuffer */
+};
+
+
 /**
  * Intel framebuffer, derived from gl_framebuffer.
  */
@@ -82,6 +98,8 @@ struct intel_renderbuffer
    GLuint pf_pending;  /**< sequence number of pending flip */
 
    GLuint vbl_pending;   /**< vblank sequence number of pending flip */
+
+   struct intel_surface *surface;
 };
 
 
diff --git a/src/mesa/drivers/dri/i915tex/intel_surface.c b/src/mesa/drivers/dri/i915tex/intel_surface.c
new file mode 100644
index 0000000000..29b640e58e
--- /dev/null
+++ b/src/mesa/drivers/dri/i915tex/intel_surface.c
@@ -0,0 +1,163 @@
+#include "glheader.h"
+#include "context.h"
+#include "framebuffer.h"
+#include "renderbuffer.h"
+#include "utils.h"
+#include "main/macros.h"
+
+
+#include "intel_screen.h"
+
+#include "intel_context.h"
+#include "intel_buffers.h"
+#include "intel_regions.h"
+#include "intel_span.h"
+#include "intel_fbo.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "pipe/softpipe/sp_surface.h"
+
+
+/*
+ * XXX a lof of this is a temporary kludge
+ */
+
+extern void
+intel_map_unmap_buffers(struct intel_context *intel, GLboolean map);
+
+
+
+static void
+read_quad_f_swz(struct softpipe_surface *gs, GLint x, GLint y,
+                GLfloat (*rrrr)[QUAD_SIZE])
+{
+
+
+}
+
+
+static void
+write_quad_f_swz(struct softpipe_surface *sps, GLint x, GLint y,
+                 GLfloat (*rrrr)[QUAD_SIZE])
+{
+   struct intel_surface *is = (struct intel_surface *) sps;
+   struct intel_renderbuffer *irb = is->rb;
+   const GLfloat *src = (const GLfloat *) rrrr;
+   GLubyte *dst = (GLubyte *) irb->region->map
+      + (y * irb->region->pitch + x) * irb->region->cpp;
+   GLubyte temp[16];
+   GLuint i, j;
+
+   for (i = 0; i < 4; i++) {
+      for (j = 0; j < 4; j++) {
+         UNCLAMPED_FLOAT_TO_UBYTE(temp[j * 4 + i], src[i * 4 + j]);
+      }
+   }
+
+   printf("intel_surface::write_quad\n");
+
+   memcpy(dst, temp, 8);
+   memcpy(dst + irb->region->pitch * irb->region->cpp, temp + 8, 8);
+}
+
+
+
+static void *
+map_surface_buffer(struct pipe_buffer *pb, GLuint access_mode)
+{
+   struct intel_surface *is = (struct intel_surface *) pb;
+   struct intel_renderbuffer *irb = is->rb;
+   GET_CURRENT_CONTEXT(ctx);
+   struct intel_context *intel = intel_context(ctx);
+
+   assert(access_mode == PIPE_MAP_READ_WRITE);
+
+   intelFinish(&intel->ctx);
+
+   /*LOCK_HARDWARE(intel);*/
+
+   if (irb->region) {
+      intel_region_map(intel->intelScreen, irb->region);
+   }
+   pb->ptr = irb->region->map;
+
+   return pb->ptr;
+}
+
+
+static void
+unmap_surface_buffer(struct pipe_buffer *pb)
+{
+   struct intel_surface *is = (struct intel_surface *) pb;
+   struct intel_renderbuffer *irb = is->rb;
+   GET_CURRENT_CONTEXT(ctx);
+   struct intel_context *intel = intel_context(ctx);
+
+   if (irb->region) {
+      intel_region_unmap(intel->intelScreen, irb->region);
+   }
+   pb->ptr = NULL;
+
+   /*UNLOCK_HARDWARE(intel);*/
+}
+
+
+struct pipe_surface *
+xmesa_get_color_surface(GLcontext *ctx, GLuint i)
+{
+   struct intel_context *intel = intel_context(ctx);
+   struct intel_framebuffer *intel_fb;
+   struct intel_renderbuffer *intel_rb;
+
+   intel_fb = (struct intel_framebuffer *) ctx->DrawBuffer;
+   intel_rb = intel_fb->color_rb[1];
+
+   if (!intel_rb->surface) {
+      /* create surface and attach to intel_rb */
+      struct intel_surface *is;
+      is = CALLOC_STRUCT(intel_surface);
+      if (is) {
+         is->surface.surface.width = intel_rb->Base.Width;
+         is->surface.surface.height = intel_rb->Base.Height;
+
+         is->surface.read_quad_f_swz = read_quad_f_swz;
+         is->surface.write_quad_f_swz = write_quad_f_swz;
+
+         is->surface.surface.buffer.map = map_surface_buffer;
+         is->surface.surface.buffer.unmap = unmap_surface_buffer;
+
+         is->rb = intel_rb;
+      }
+      intel_rb->surface = is;
+   }
+   else {
+      /* update surface size */
+      struct intel_surface *is = intel_rb->surface;
+      is->surface.surface.width = intel_rb->Base.Width;
+      is->surface.surface.height = intel_rb->Base.Height;
+      /* sanity check */
+      assert(is->surface.surface.buffer.map == map_surface_buffer);
+   }
+
+   return &intel_rb->surface->surface.surface;
+}
+
+
+struct pipe_surface *
+xmesa_get_z_surface(GLcontext *ctx)
+{
+   /* XXX fix */
+   return NULL;
+}
+
+
+struct pipe_surface *
+xmesa_get_stencil_surface(GLcontext *ctx)
+{
+   /* XXX fix */
+   return NULL;
+}
+
+
+