svga: always link with C++

[mesa.git] / src / mesa / main / framebuffer.c

diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index 7c3c4e3456c7dcc54d45dd9bce43214dc2a5285e..d3abc2b30b1b522b8853a7972a55c1f40cae2134 100644 (file)
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -42,6 +42,7 @@
 #include "framebuffer.h"
 #include "renderbuffer.h"
 #include "texobj.h"
+#include "glformats.h"
 
 
 
@@ -334,7 +335,7 @@ _mesa_resize_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
 void
 _mesa_resizebuffers( struct gl_context *ctx )
 {
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx );
+   FLUSH_VERTICES(ctx, 0);
 
    if (MESA_VERBOSE & VERBOSE_API)
       _mesa_debug(ctx, "glResizeBuffersMESA\n");
@@ -347,7 +348,7 @@ _mesa_resizebuffers( struct gl_context *ctx )
       GLuint newWidth, newHeight;
       struct gl_framebuffer *buffer = ctx->WinSysDrawBuffer;
 
-      assert(buffer->Name == 0);
+      assert(_mesa_is_winsys_fbo(buffer));
 
       /* ask device driver for size of output buffer */
       ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
@@ -364,7 +365,7 @@ _mesa_resizebuffers( struct gl_context *ctx )
       GLuint newWidth, newHeight;
       struct gl_framebuffer *buffer = ctx->WinSysReadBuffer;
 
-      assert(buffer->Name == 0);
+      assert(_mesa_is_winsys_fbo(buffer));
 
       /* ask device driver for size of read buffer */
       ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
@@ -444,7 +445,7 @@ _mesa_update_draw_buffer_bounds(struct gl_context *ctx)
    if (!buffer)
       return;
 
-   if (buffer->Name) {
+   if (_mesa_is_user_fbo(buffer)) {
       /* user-created framebuffer size depends on the renderbuffers */
       update_framebuffer_size(ctx, buffer);
    }
@@ -517,6 +518,13 @@ _mesa_update_framebuffer_visual(struct gl_context *ctx,
          const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
          const gl_format fmt = rb->Format;
 
+         /* Grab samples and sampleBuffers from any attachment point (assuming
+          * the framebuffer is complete, we'll get the same answer from all
+          * attachments).
+          */
+         fb->Visual.samples = rb->NumSamples;
+         fb->Visual.sampleBuffers = rb->NumSamples > 0 ? 1 : 0;
+
          if (_mesa_is_legal_color_format(ctx, baseFormat)) {
             fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
             fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
@@ -524,10 +532,8 @@ _mesa_update_framebuffer_visual(struct gl_context *ctx,
             fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
             fb->Visual.rgbBits = fb->Visual.redBits
                + fb->Visual.greenBits + fb->Visual.blueBits;
-            fb->Visual.samples = rb->NumSamples;
-            fb->Visual.sampleBuffers = rb->NumSamples > 0 ? 1 : 0;
             if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
-                fb->Visual.sRGBCapable = ctx->Const.sRGBCapable;
+                fb->Visual.sRGBCapable = ctx->Extensions.EXT_framebuffer_sRGB;
             break;
          }
       }
@@ -865,13 +871,20 @@ _mesa_dest_buffer_exists(struct gl_context *ctx, GLenum format)
 GLenum
 _mesa_get_color_read_format(struct gl_context *ctx)
 {
+   const GLenum data_type = _mesa_get_format_datatype(
+                               ctx->ReadBuffer->_ColorReadBuffer->Format);
+
    switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
    case MESA_FORMAT_ARGB8888:
       return GL_BGRA;
    case MESA_FORMAT_RGB565:
       return GL_BGR;
    default:
-      return GL_RGBA;
+      if (data_type == GL_UNSIGNED_INT || data_type == GL_INT) {
+         return GL_RGBA_INTEGER;
+      } else {
+         return GL_RGBA;
+      }
    }
 }
 
@@ -882,17 +895,50 @@ _mesa_get_color_read_format(struct gl_context *ctx)
 GLenum
 _mesa_get_color_read_type(struct gl_context *ctx)
 {
+   const GLenum data_type = _mesa_get_format_datatype(
+                               ctx->ReadBuffer->_ColorReadBuffer->Format);
+
    switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
-   case MESA_FORMAT_ARGB8888:
-      return GL_UNSIGNED_BYTE;
    case MESA_FORMAT_RGB565:
       return GL_UNSIGNED_SHORT_5_6_5_REV;
+   default:
+      break;
+   }
+
+   switch (data_type) {
+   case GL_SIGNED_NORMALIZED:
+      return GL_BYTE;
+   case GL_UNSIGNED_INT:
+   case GL_INT:
+   case GL_FLOAT:
+      return data_type;
+   case GL_UNSIGNED_NORMALIZED:
    default:
       return GL_UNSIGNED_BYTE;
    }
 }
 
 
+/**
+ * Returns the read renderbuffer for the specified format.
+ */
+struct gl_renderbuffer *
+_mesa_get_read_renderbuffer_for_format(struct gl_context *ctx,
+                                       GLenum format)
+{
+   struct gl_framebuffer *rfb = ctx->ReadBuffer;
+
+   if (_mesa_is_color_format(format)) {
+      return rfb->Attachment[rfb->_ColorReadBufferIndex].Renderbuffer;
+   } else if (_mesa_is_depth_format(format) ||
+              _mesa_is_depthstencil_format(format)) {
+      return rfb->Attachment[BUFFER_DEPTH].Renderbuffer;
+   } else {
+      return rfb->Attachment[BUFFER_STENCIL].Renderbuffer;
+   }
+}
+
+
 /**
  * Print framebuffer info to stderr, for debugging.
  */