Add 'type' parameter to is_format_supported() to specify texture vs. drawing surface, etc.

Additional types may be added in the future.

6 files changed, 71 insertions, 73 deletions

diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c
index c0e41dbeec..0179000353 100644
--- a/src/mesa/state_tracker/st_cb_drawpixels.c
+++ b/src/mesa/state_tracker/st_cb_drawpixels.c
@@ -993,13 +993,13 @@ make_bitmap_texture(GLcontext *ctx, GLsizei width, GLsizei height,
    int row, col;
 
    /* find a texture format we know */
-   if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_I8 )) {
+   if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_I8, PIPE_TEXTURE )) {
       format = PIPE_FORMAT_U_I8;
       internal_format = GL_INTENSITY8;
       cpp = 1;
       comp = 0;
    }
-   else if (pipe->is_format_supported( pipe, PIPE_FORMAT_A8R8G8B8_UNORM )) {
+   else if (pipe->is_format_supported( pipe, PIPE_FORMAT_A8R8G8B8_UNORM, PIPE_TEXTURE )) {
       format = PIPE_FORMAT_A8R8G8B8_UNORM;
       internal_format = GL_RGBA8;
       cpp = 4;
diff --git a/src/mesa/state_tracker/st_cb_fbo.c b/src/mesa/state_tracker/st_cb_fbo.c
index 36d25a576d..6e9e7e3a24 100644
--- a/src/mesa/state_tracker/st_cb_fbo.c
+++ b/src/mesa/state_tracker/st_cb_fbo.c
@@ -87,12 +87,14 @@ st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
 {
    struct pipe_context *pipe = ctx->st->pipe;
    struct st_renderbuffer *strb = st_renderbuffer(rb);
+   uint type = strb->screenSurface ? PIPE_SCREEN_SURFACE : PIPE_SURFACE;
    const enum pipe_format pipeFormat
-      = st_choose_pipe_format(pipe, internalFormat, GL_NONE, GL_NONE);
+      = st_choose_pipe_format(pipe, internalFormat, GL_NONE, GL_NONE, type);
    GLuint cpp;
-   GLbitfield flags = PIPE_SURFACE_FLAG_RENDER; /* want to render to surface */
+   GLbitfield flags = 0x0; /* XXX needed? */
 
    cpp = init_renderbuffer_bits(strb, pipeFormat);
+   assert(cpp);
 
    if (strb->surface && strb->surface->format != pipeFormat) {
       /* need to change surface types, free this surface */
@@ -201,9 +203,11 @@ st_new_renderbuffer(GLcontext *ctx, GLuint name)
 /**
  * Allocate a renderbuffer for a an on-screen window (not a user-created
  * renderbuffer).  The window system code determines the internal format.
+ * \param screenSurface  indicates if the renderbuffer is a front/back color
+ *                       buffer that'll be displayed/copied to the screen
  */
 struct gl_renderbuffer *
-st_new_renderbuffer_fb(GLenum intFormat)
+st_new_renderbuffer_fb(GLenum intFormat, GLboolean screenSurface)
 {
    struct st_renderbuffer *strb;
 
@@ -216,6 +220,7 @@ st_new_renderbuffer_fb(GLenum intFormat)
    _mesa_init_renderbuffer(&strb->Base, 0);
    strb->Base.ClassID = 0x4242; /* just a unique value */
    strb->Base.InternalFormat = intFormat;
+   strb->screenSurface = screenSurface;
 
    switch (intFormat) {
    case GL_RGB5:
diff --git a/src/mesa/state_tracker/st_cb_fbo.h b/src/mesa/state_tracker/st_cb_fbo.h
index 2280441db5..bd85bfc549 100644
--- a/src/mesa/state_tracker/st_cb_fbo.h
+++ b/src/mesa/state_tracker/st_cb_fbo.h
@@ -39,6 +39,7 @@ struct st_renderbuffer
 {
    struct gl_renderbuffer Base;
    struct pipe_surface *surface;
+   GLboolean screenSurface;  /**< A front/back colorbuffer? */
 };
 
 
@@ -50,7 +51,7 @@ st_renderbuffer(struct gl_renderbuffer *rb)
 
 
 extern struct gl_renderbuffer *
-st_new_renderbuffer_fb(GLenum intFormat);
+st_new_renderbuffer_fb(GLenum intFormat, GLboolean screen_surface);
 
 
 extern void
diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c
index 8d39e1bec6..c292a975f3 100644
--- a/src/mesa/state_tracker/st_format.c
+++ b/src/mesa/state_tracker/st_format.c
@@ -276,10 +276,9 @@ st_mesa_format_to_pipe_format(GLuint mesaFormat)
  * Find an RGBA format supported by the context/winsys.
  */
 static GLuint
-default_rgba_format(
-   struct pipe_context *pipe )
+default_rgba_format(struct pipe_context *pipe, uint type)
 {
-   static const uint colorFormats[] = {
+   static const enum pipe_format colorFormats[] = {
       PIPE_FORMAT_R8G8B8A8_UNORM,
       PIPE_FORMAT_A8R8G8B8_UNORM,
       PIPE_FORMAT_B8G8R8A8_UNORM,
@@ -287,7 +286,7 @@ default_rgba_format(
    };
    uint i;
    for (i = 0; i < Elements(colorFormats); i++) {
-      if (pipe->is_format_supported( pipe, colorFormats[i] )) {
+      if (pipe->is_format_supported( pipe, colorFormats[i], type )) {
          return colorFormats[i];
       }
    }
@@ -299,10 +298,9 @@ default_rgba_format(
  * Search list of formats for first RGBA format with >8 bits/channel.
  */
 static GLuint
-default_deep_rgba_format(
-   struct pipe_context *pipe )
+default_deep_rgba_format(struct pipe_context *pipe, uint type)
 {
-   if (pipe->is_format_supported( pipe, PIPE_FORMAT_R16G16B16A16_SNORM )) {
+   if (pipe->is_format_supported(pipe, PIPE_FORMAT_R16G16B16A16_SNORM, type)) {
       return PIPE_FORMAT_R16G16B16A16_SNORM;
    }
    return PIPE_FORMAT_NONE;
@@ -313,10 +311,9 @@ default_deep_rgba_format(
  * Find an Z format supported by the context/winsys.
  */
 static GLuint
-default_depth_format(
-   struct pipe_context *pipe )
+default_depth_format(struct pipe_context *pipe, uint type)
 {
-   static const uint zFormats[] = {
+   static const enum pipe_format zFormats[] = {
       PIPE_FORMAT_Z16_UNORM,
       PIPE_FORMAT_Z32_UNORM,
       PIPE_FORMAT_S8Z24_UNORM,
@@ -324,7 +321,7 @@ default_depth_format(
    };
    uint i;
    for (i = 0; i < Elements(zFormats); i++) {
-      if (pipe->is_format_supported( pipe, zFormats[i] )) {
+      if (pipe->is_format_supported( pipe, zFormats[i], type )) {
          return zFormats[i];
       }
    }
@@ -348,67 +345,71 @@ default_depth_format(
  */
 GLuint
 st_choose_pipe_format(struct pipe_context *pipe, GLint internalFormat,
-                      GLenum format, GLenum type)
+                      GLenum format, GLenum type, uint surfType)
 {
+   assert(surfType == PIPE_TEXTURE ||
+          surfType == PIPE_SURFACE ||
+          surfType == PIPE_SCREEN_SURFACE);
+
    switch (internalFormat) {
    case 4:
    case GL_RGBA:
    case GL_COMPRESSED_RGBA:
       if (format == GL_BGRA) {
          if (type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) {
-            if (pipe->is_format_supported( pipe, PIPE_FORMAT_A8R8G8B8_UNORM ))
+            if (pipe->is_format_supported( pipe, PIPE_FORMAT_A8R8G8B8_UNORM, surfType ))
                return PIPE_FORMAT_A8R8G8B8_UNORM;
          }
          else if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
-            if (pipe->is_format_supported( pipe, PIPE_FORMAT_A4R4G4B4_UNORM ))
+            if (pipe->is_format_supported( pipe, PIPE_FORMAT_A4R4G4B4_UNORM, surfType ))
                return PIPE_FORMAT_A4R4G4B4_UNORM;
          }
          else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
-            if (pipe->is_format_supported( pipe, PIPE_FORMAT_A1R5G5B5_UNORM ))
+            if (pipe->is_format_supported( pipe, PIPE_FORMAT_A1R5G5B5_UNORM, surfType ))
                return PIPE_FORMAT_A1R5G5B5_UNORM;
          }
       }
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case 3:
    case GL_RGB:
    case GL_COMPRESSED_RGB:
       if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
-         if (pipe->is_format_supported( pipe, PIPE_FORMAT_R5G6B5_UNORM ))
+         if (pipe->is_format_supported( pipe, PIPE_FORMAT_R5G6B5_UNORM, surfType ))
             return PIPE_FORMAT_R5G6B5_UNORM;
       }
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case GL_RGBA8:
    case GL_RGB10_A2:
    case GL_RGBA12:
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
    case GL_RGBA16:
-      return default_deep_rgba_format( pipe );
+      return default_deep_rgba_format( pipe, surfType );
 
    case GL_RGBA4:
    case GL_RGBA2:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_A4R4G4B4_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_A4R4G4B4_UNORM, surfType ))
          return PIPE_FORMAT_A4R4G4B4_UNORM;
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case GL_RGB5_A1:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_A1R5G5B5_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_A1R5G5B5_UNORM, surfType ))
          return PIPE_FORMAT_A1R5G5B5_UNORM;
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case GL_RGB8:
    case GL_RGB10:
    case GL_RGB12:
    case GL_RGB16:
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case GL_RGB5:
    case GL_RGB4:
    case GL_R3_G3_B2:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_A1R5G5B5_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_A1R5G5B5_UNORM, surfType ))
          return PIPE_FORMAT_A1R5G5B5_UNORM;
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case GL_ALPHA:
    case GL_ALPHA4:
@@ -416,9 +417,9 @@ st_choose_pipe_format(struct pipe_context *pipe, GLint internalFormat,
    case GL_ALPHA12:
    case GL_ALPHA16:
    case GL_COMPRESSED_ALPHA:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_A8 ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_A8, surfType ))
          return PIPE_FORMAT_U_A8;
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case 1:
    case GL_LUMINANCE:
@@ -427,9 +428,9 @@ st_choose_pipe_format(struct pipe_context *pipe, GLint internalFormat,
    case GL_LUMINANCE12:
    case GL_LUMINANCE16:
    case GL_COMPRESSED_LUMINANCE:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_A8 ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_A8, surfType ))
          return PIPE_FORMAT_U_A8;
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case 2:
    case GL_LUMINANCE_ALPHA:
@@ -440,9 +441,9 @@ st_choose_pipe_format(struct pipe_context *pipe, GLint internalFormat,
    case GL_LUMINANCE12_ALPHA12:
    case GL_LUMINANCE16_ALPHA16:
    case GL_COMPRESSED_LUMINANCE_ALPHA:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_A8_L8 ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_A8_L8, surfType ))
          return PIPE_FORMAT_U_A8_L8;
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case GL_INTENSITY:
    case GL_INTENSITY4:
@@ -450,17 +451,17 @@ st_choose_pipe_format(struct pipe_context *pipe, GLint internalFormat,
    case GL_INTENSITY12:
    case GL_INTENSITY16:
    case GL_COMPRESSED_INTENSITY:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_I8 ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_I8, surfType ))
          return PIPE_FORMAT_U_I8;
-      return default_rgba_format( pipe );
+      return default_rgba_format( pipe, surfType );
 
    case GL_YCBCR_MESA:
       if (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE) {
-         if (pipe->is_format_supported( pipe, PIPE_FORMAT_YCBCR ))
+         if (pipe->is_format_supported( pipe, PIPE_FORMAT_YCBCR, surfType ))
             return PIPE_FORMAT_YCBCR;
       }
       else {
-         if (pipe->is_format_supported( pipe, PIPE_FORMAT_YCBCR_REV ))
+         if (pipe->is_format_supported( pipe, PIPE_FORMAT_YCBCR_REV, surfType ))
             return PIPE_FORMAT_YCBCR_REV;
       }
       return PIPE_FORMAT_NONE;
@@ -489,40 +490,40 @@ st_choose_pipe_format(struct pipe_context *pipe, GLint internalFormat,
 #endif
 
    case GL_DEPTH_COMPONENT16:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z16_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z16_UNORM, surfType ))
          return PIPE_FORMAT_Z16_UNORM;
       /* fall-through */
    case GL_DEPTH_COMPONENT24:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_S8Z24_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_S8Z24_UNORM, surfType ))
          return PIPE_FORMAT_S8Z24_UNORM;
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z24S8_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z24S8_UNORM, surfType ))
          return PIPE_FORMAT_Z24S8_UNORM;
       /* fall-through */
    case GL_DEPTH_COMPONENT32:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z32_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z32_UNORM, surfType ))
          return PIPE_FORMAT_Z32_UNORM;
       /* fall-through */
    case GL_DEPTH_COMPONENT:
-      return default_depth_format( pipe );
+      return default_depth_format( pipe, surfType );
 
    case GL_STENCIL_INDEX:
    case GL_STENCIL_INDEX1_EXT:
    case GL_STENCIL_INDEX4_EXT:
    case GL_STENCIL_INDEX8_EXT:
    case GL_STENCIL_INDEX16_EXT:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_S8 ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_U_S8, surfType ))
          return PIPE_FORMAT_U_S8;
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_S8Z24_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_S8Z24_UNORM, surfType ))
          return PIPE_FORMAT_S8Z24_UNORM;
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z24S8_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z24S8_UNORM, surfType ))
          return PIPE_FORMAT_Z24S8_UNORM;
       return PIPE_FORMAT_NONE;
 
    case GL_DEPTH_STENCIL_EXT:
    case GL_DEPTH24_STENCIL8_EXT:
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_S8Z24_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_S8Z24_UNORM, surfType ))
          return PIPE_FORMAT_S8Z24_UNORM;
-      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z24S8_UNORM ))
+      if (pipe->is_format_supported( pipe, PIPE_FORMAT_Z24S8_UNORM, surfType ))
          return PIPE_FORMAT_Z24S8_UNORM;
       return PIPE_FORMAT_NONE;
 
diff --git a/src/mesa/state_tracker/st_format.h b/src/mesa/state_tracker/st_format.h
index 6ccf5536f9..ebff7c5b91 100644
--- a/src/mesa/state_tracker/st_format.h
+++ b/src/mesa/state_tracker/st_format.h
@@ -65,7 +65,7 @@ st_mesa_format_to_pipe_format(GLuint mesaFormat);
 
 extern GLuint
 st_choose_pipe_format(struct pipe_context *pipe, GLint internalFormat,
-                      GLenum format, GLenum type);
+                      GLenum format, GLenum type, uint surfType);
 
 
 extern const struct gl_texture_format *
diff --git a/src/mesa/state_tracker/st_framebuffer.c b/src/mesa/state_tracker/st_framebuffer.c
index 8633f431b2..454306b874 100644
--- a/src/mesa/state_tracker/st_framebuffer.c
+++ b/src/mesa/state_tracker/st_framebuffer.c
@@ -51,19 +51,21 @@ struct st_framebuffer *st_create_framebuffer( const __GLcontextModes *visual,
             /* fake frontbuffer */
             /* XXX allocation should only happen in the unusual case
                it's actually needed */
-            struct gl_renderbuffer *rb = st_new_renderbuffer_fb(rgbFormat);
+            struct gl_renderbuffer *rb
+               = st_new_renderbuffer_fb(rgbFormat, GL_TRUE);
             _mesa_add_renderbuffer(&stfb->Base, BUFFER_FRONT_LEFT, rb);
          }
 
          if (visual->doubleBufferMode) {
-            struct gl_renderbuffer *rb = st_new_renderbuffer_fb(rgbFormat);
+            struct gl_renderbuffer *rb
+               = st_new_renderbuffer_fb(rgbFormat, GL_TRUE);
             _mesa_add_renderbuffer(&stfb->Base, BUFFER_BACK_LEFT, rb);
          }
 
          if (visual->depthBits == 24 && visual->stencilBits == 8) {
             /* combined depth/stencil buffer */
             struct gl_renderbuffer *depthStencilRb
-               = st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT);
+               = st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT, GL_FALSE);
             /* note: bind RB to two attachment points */
             _mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthStencilRb);
             _mesa_add_renderbuffer(&stfb->Base, BUFFER_STENCIL, depthStencilRb);
@@ -74,47 +76,36 @@ struct st_framebuffer *st_create_framebuffer( const __GLcontextModes *visual,
             if (visual->depthBits == 32) {
                /* 32-bit depth buffer */
                struct gl_renderbuffer *depthRb
-                  = st_new_renderbuffer_fb(GL_DEPTH_COMPONENT32);
+                  = st_new_renderbuffer_fb(GL_DEPTH_COMPONENT32, GL_FALSE);
                _mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
             }
             else if (visual->depthBits == 24) {
                /* 24-bit depth buffer, ignore stencil bits */
                struct gl_renderbuffer *depthRb
-                  = st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT);
+                  = st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT, GL_FALSE);
                _mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
             }
             else if (visual->depthBits > 0) {
                /* 16-bit depth buffer */
                struct gl_renderbuffer *depthRb
-                  = st_new_renderbuffer_fb(GL_DEPTH_COMPONENT16);
+                  = st_new_renderbuffer_fb(GL_DEPTH_COMPONENT16, GL_FALSE);
                _mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, depthRb);
             }
 
             if (visual->stencilBits > 0) {
                /* 8-bit stencil */
                struct gl_renderbuffer *stencilRb
-                  = st_new_renderbuffer_fb(GL_STENCIL_INDEX8_EXT);
+                  = st_new_renderbuffer_fb(GL_STENCIL_INDEX8_EXT, GL_FALSE);
                _mesa_add_renderbuffer(&stfb->Base, BUFFER_STENCIL, stencilRb);
             }
          }
 
-#if 0
          if (visual->accumRedBits > 0) {
             /* 16-bit/channel accum */
             struct gl_renderbuffer *accumRb
-               = st_new_renderbuffer_fb(GL_RGBA16);
+               = st_new_renderbuffer_fb(GL_RGBA16, GL_FALSE);
             _mesa_add_renderbuffer(&stfb->Base, BUFFER_ACCUM, accumRb);
          }
-#endif
-
-         /* now add any/all software-based renderbuffers we may need */
-         _mesa_add_soft_renderbuffers(&stfb->Base,
-                                      GL_FALSE, /* never sw color */
-                                      GL_FALSE, /* never sw depth */
-                                      GL_FALSE, /* stencil */
-                                      visual->accumRedBits > 0,
-                                      GL_FALSE, /* never sw alpha */
-                                      GL_FALSE  /* never sw aux */ );
       }
 
       stfb->Base.Initialized = GL_TRUE;