cogl-program: Move the code for CoglBoxedValue to its own file

The code for manipulating CoglBoxedValues is now separated from
cogl-program.c into its own file. That way when we add support for
setting uniform values on a CoglPipeline the code for storing the
values can be shared.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

6 files changed, 455 insertions, 192 deletions

diff --git a/cogl/Makefile.am b/cogl/Makefile.am
index ae02d86c..8f3acfb4 100644
--- a/cogl/Makefile.am
+++ b/cogl/Makefile.am
@@ -327,6 +327,8 @@ cogl_sources_c = \
 	$(srcdir)/winsys/cogl-winsys-stub.c		\
 	$(srcdir)/cogl-config-private.h			\
 	$(srcdir)/cogl-config.c				\
+	$(srcdir)/cogl-boxed-value.h			\
+	$(srcdir)/cogl-boxed-value.c			\
 	$(NULL)
 
 if SUPPORT_XLIB
diff --git a/cogl/cogl-boxed-value.c b/cogl/cogl-boxed-value.c
new file mode 100644
index 00000000..ec1d4d5f
--- /dev/null
+++ b/cogl/cogl-boxed-value.c
@@ -0,0 +1,286 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "cogl-boxed-value.h"
+#include "cogl-context-private.h"
+
+gboolean
+_cogl_boxed_value_equal (const CoglBoxedValue *bva,
+                         const CoglBoxedValue *bvb)
+{
+  const void *pa, *pb;
+
+  if (bva->type != bvb->type)
+    return FALSE;
+
+  switch (bva->type)
+    {
+    case COGL_BOXED_NONE:
+      return TRUE;
+
+    case COGL_BOXED_INT:
+      if (bva->size != bvb->size || bva->count != bvb->count)
+        return FALSE;
+
+      if (bva->count == 1)
+        {
+          pa = bva->v.int_value;
+          pb = bvb->v.int_value;
+        }
+      else
+        {
+          pa = bva->v.int_array;
+          pb = bvb->v.int_array;
+        }
+
+      return !memcmp (pa, pb, sizeof (int) * bva->size * bva->count);
+
+    case COGL_BOXED_FLOAT:
+      if (bva->size != bvb->size || bva->count != bvb->count)
+        return FALSE;
+
+      if (bva->count == 1)
+        {
+          pa = bva->v.float_value;
+          pb = bvb->v.float_value;
+        }
+      else
+        {
+          pa = bva->v.float_array;
+          pb = bvb->v.float_array;
+        }
+
+      return !memcmp (pa, pb, sizeof (float) * bva->size * bva->count);
+
+    case COGL_BOXED_MATRIX:
+      if (bva->size != bvb->size ||
+          bva->count != bvb->count ||
+          bva->transpose != bvb->transpose)
+        return FALSE;
+
+      if (bva->count == 1)
+        {
+          pa = bva->v.matrix;
+          pb = bvb->v.matrix;
+        }
+      else
+        {
+          pa = bva->v.array;
+          pb = bvb->v.array;
+        }
+
+      return !memcmp (pa, pb,
+                      sizeof (float) * bva->size * bva->size * bva->count);
+    }
+
+  g_warn_if_reached ();
+
+  return FALSE;
+}
+
+static void
+_cogl_boxed_value_set_x (CoglBoxedValue *bv,
+                         int size,
+                         int count,
+                         CoglBoxedType type,
+                         gsize value_size,
+                         gconstpointer value,
+                         gboolean transpose)
+{
+  if (count == 1)
+    {
+      if (bv->count > 1)
+        g_free (bv->v.array);
+
+      memcpy (bv->v.float_value, value, value_size);
+    }
+  else
+    {
+      if (bv->count > 1)
+        {
+          if (bv->count != count ||
+              bv->size != size ||
+              bv->type != type)
+            {
+              g_free (bv->v.array);
+              bv->v.array = g_malloc (count * value_size);
+            }
+        }
+      else
+        bv->v.array = g_malloc (count * value_size);
+
+      memcpy (bv->v.array, value, count * value_size);
+    }
+
+  bv->type = type;
+  bv->size = size;
+  bv->count = count;
+  bv->transpose = transpose;
+}
+
+void
+_cogl_boxed_value_set_1f (CoglBoxedValue *bv,
+                          float value)
+{
+  _cogl_boxed_value_set_x (bv,
+                           1, 1, COGL_BOXED_FLOAT,
+                           sizeof (float), &value, FALSE);
+}
+
+void
+_cogl_boxed_value_set_1i (CoglBoxedValue *bv,
+                          int value)
+{
+  _cogl_boxed_value_set_x (bv,
+                           1, 1, COGL_BOXED_INT,
+                           sizeof (int), &value, FALSE);
+}
+
+void
+_cogl_boxed_value_set_float (CoglBoxedValue *bv,
+                             int n_components,
+                             int count,
+                             const float *value)
+{
+  _cogl_boxed_value_set_x (bv,
+                           n_components, count,
+                           COGL_BOXED_FLOAT,
+                           sizeof (float) * n_components, value, FALSE);
+}
+
+void
+_cogl_boxed_value_set_int (CoglBoxedValue *bv,
+                           int n_components,
+                           int count,
+                           const int *value)
+{
+  _cogl_boxed_value_set_x (bv,
+                           n_components, count,
+                           COGL_BOXED_INT,
+                           sizeof (int) * n_components, value, FALSE);
+}
+
+void
+_cogl_boxed_value_set_matrix (CoglBoxedValue *bv,
+                              int dimensions,
+                              int count,
+                              gboolean transpose,
+                              const float *value)
+{
+  _cogl_boxed_value_set_x (bv,
+                           dimensions, count,
+                           COGL_BOXED_MATRIX,
+                           sizeof (float) * dimensions * dimensions,
+                           value,
+                           transpose);
+}
+
+void
+_cogl_boxed_value_destroy (CoglBoxedValue *bv)
+{
+  if (bv->count > 1)
+    g_free (bv->v.array);
+}
+
+void
+_cogl_boxed_value_set_uniform (CoglContext *ctx,
+                               GLint location,
+                               const CoglBoxedValue *value)
+{
+  switch (value->type)
+    {
+    case COGL_BOXED_NONE:
+      break;
+
+    case COGL_BOXED_INT:
+      {
+        const int *ptr;
+
+        if (value->count == 1)
+          ptr = value->v.int_value;
+        else
+          ptr = value->v.int_array;
+
+        switch (value->size)
+          {
+          case 1: ctx->glUniform1iv (location, value->count, ptr); break;
+          case 2: ctx->glUniform2iv (location, value->count, ptr); break;
+          case 3: ctx->glUniform3iv (location, value->count, ptr); break;
+          case 4: ctx->glUniform4iv (location, value->count, ptr); break;
+          }
+      }
+      break;
+
+    case COGL_BOXED_FLOAT:
+      {
+        const float *ptr;
+
+        if (value->count == 1)
+          ptr = value->v.float_value;
+        else
+          ptr = value->v.float_array;
+
+        switch (value->size)
+          {
+          case 1: ctx->glUniform1fv (location, value->count, ptr); break;
+          case 2: ctx->glUniform2fv (location, value->count, ptr); break;
+          case 3: ctx->glUniform3fv (location, value->count, ptr); break;
+          case 4: ctx->glUniform4fv (location, value->count, ptr); break;
+          }
+      }
+      break;
+
+    case COGL_BOXED_MATRIX:
+      {
+        const float *ptr;
+
+        if (value->count == 1)
+          ptr = value->v.matrix;
+        else
+          ptr = value->v.float_array;
+
+        switch (value->size)
+          {
+          case 2:
+            ctx->glUniformMatrix2fv (location, value->count,
+                                     value->transpose, ptr);
+            break;
+          case 3:
+            ctx->glUniformMatrix3fv (location, value->count,
+                                     value->transpose, ptr);
+            break;
+          case 4:
+            ctx->glUniformMatrix4fv (location, value->count,
+                                     value->transpose, ptr);
+            break;
+          }
+      }
+      break;
+    }
+}
diff --git a/cogl/cogl-boxed-value.h b/cogl/cogl-boxed-value.h
new file mode 100644
index 00000000..dada36f2
--- /dev/null
+++ b/cogl/cogl-boxed-value.h
@@ -0,0 +1,100 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifndef __COGL_BOXED_VALUE_H
+#define __COGL_BOXED_VALUE_H
+
+#include <glib.h>
+
+#include "cogl-context.h"
+
+typedef enum {
+  COGL_BOXED_NONE,
+  COGL_BOXED_INT,
+  COGL_BOXED_FLOAT,
+  COGL_BOXED_MATRIX
+} CoglBoxedType;
+
+typedef struct _CoglBoxedValue
+{
+  CoglBoxedType type;
+  int size, count;
+  gboolean transpose;
+
+  union {
+    float float_value[4];
+    int int_value[4];
+    float matrix[16];
+    float *float_array;
+    int *int_array;
+    void *array;
+  } v;
+} CoglBoxedValue;
+
+#define _cogl_boxed_value_init(bv)              \
+  G_STMT_START {                                \
+    CoglBoxedValue *_bv = (bv);                 \
+    _bv->type = COGL_BOXED_NONE;                \
+    _bv->count = 1;                             \
+  } G_STMT_END
+
+gboolean
+_cogl_boxed_value_equal (const CoglBoxedValue *bva,
+                         const CoglBoxedValue *bvb);
+
+void
+_cogl_boxed_value_set_1f (CoglBoxedValue *bv,
+                          float value);
+
+void
+_cogl_boxed_value_set_1i (CoglBoxedValue *bv,
+                          int value);
+
+void
+_cogl_boxed_value_set_float (CoglBoxedValue *bv,
+                             int n_components,
+                             int count,
+                             const float *value);
+
+void
+_cogl_boxed_value_set_int (CoglBoxedValue *bv,
+                           int n_components,
+                           int count,
+                           const int *value);
+
+void
+_cogl_boxed_value_set_matrix (CoglBoxedValue *bv,
+                              int dimensions,
+                              int count,
+                              gboolean transpose,
+                              const float *value);
+
+void
+_cogl_boxed_value_destroy (CoglBoxedValue *bv);
+
+void
+_cogl_boxed_value_set_uniform (CoglContext *ctx,
+                               int location,
+                               const CoglBoxedValue *value);
+
+#endif /* __COGL_BOXED_VALUE_H */
diff --git a/cogl/cogl-internal.h b/cogl/cogl-internal.h
index 946f8bca..6d001375 100644
--- a/cogl/cogl-internal.h
+++ b/cogl/cogl-internal.h
@@ -32,29 +32,6 @@
 #include <X11/Xutil.h>
 #endif
 
-typedef enum {
-  COGL_BOXED_NONE,
-  COGL_BOXED_INT,
-  COGL_BOXED_FLOAT,
-  COGL_BOXED_MATRIX
-} CoglBoxedType;
-
-typedef struct _CoglBoxedValue
-{
-  CoglBoxedType type;
-  int size, count;
-  gboolean transpose;
-
-  union {
-    float float_value[4];
-    int int_value[4];
-    float matrix[16];
-    float *float_array;
-    int *int_array;
-    void *array;
-  } v;
-} CoglBoxedValue;
-
 #ifdef COGL_GL_DEBUG
 
 const char *
diff --git a/cogl/cogl-pipeline-private.h b/cogl/cogl-pipeline-private.h
index 4d045364..5b07e5ef 100644
--- a/cogl/cogl-pipeline-private.h
+++ b/cogl/cogl-pipeline-private.h
@@ -36,6 +36,7 @@
 #include "cogl-profile.h"
 #include "cogl-queue.h"
 #include "cogl-internal.h"
+#include "cogl-boxed-value.h"
 
 #include <glib.h>
 
diff --git a/cogl/cogl-program.c b/cogl/cogl-program.c
index 316b1642..d0fb6f08 100644
--- a/cogl/cogl-program.c
+++ b/cogl/cogl-program.c
@@ -189,71 +189,34 @@ cogl_program_get_uniform_location (CoglHandle handle,
   return program->custom_uniforms->len - 1;
 }
 
-static void
-cogl_program_uniform_x (CoglHandle handle,
-                        int uniform_no,
-                        int size,
-                        int count,
-                        CoglBoxedType type,
-                        gsize value_size,
-                        gconstpointer value,
-                        gboolean transpose)
+static CoglProgramUniform *
+cogl_program_modify_uniform (CoglProgram *program,
+                             int uniform_no)
 {
-  CoglProgram *program = handle;
-
-  _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
-  _COGL_RETURN_IF_FAIL (cogl_is_program (handle));
-  _COGL_RETURN_IF_FAIL (program != NULL);
-
-  if (uniform_no >= 0 && uniform_no < program->custom_uniforms->len &&
-      size >= 1 && size <= 4 && count >= 1)
-    {
-      CoglProgramUniform *uniform =
-        &g_array_index (program->custom_uniforms,
-                        CoglProgramUniform, uniform_no);
+  CoglProgramUniform *uniform;
 
-      if (count == 1)
-        {
-          if (uniform->value.count > 1)
-            g_free (uniform->value.v.array);
+  _COGL_RETURN_VAL_IF_FAIL (cogl_is_program (program), NULL);
+  _COGL_RETURN_VAL_IF_FAIL (uniform_no >= 0 &&
+                            uniform_no < program->custom_uniforms->len,
+                            NULL);
 
-          memcpy (uniform->value.v.float_value, value, value_size);
-        }
-      else
-        {
-          if (uniform->value.count > 1)
-            {
-              if (uniform->value.count != count ||
-                  uniform->value.size != size ||
-                  uniform->value.type != type)
-                {
-                  g_free (uniform->value.v.array);
-                  uniform->value.v.array = g_malloc (count * value_size);
-                }
-            }
-          else
-            uniform->value.v.array = g_malloc (count * value_size);
-
-          memcpy (uniform->value.v.array, value, count * value_size);
-        }
+  uniform = &g_array_index (program->custom_uniforms,
+                            CoglProgramUniform, uniform_no);
+  uniform->dirty = TRUE;
 
-      uniform->value.type = type;
-      uniform->value.size = size;
-      uniform->value.count = count;
-      uniform->value.transpose = transpose;
-      uniform->dirty = TRUE;
-    }
+  return uniform;
 }
 
 void
 cogl_program_uniform_1f (int uniform_no,
                          float  value)
 {
+  CoglProgramUniform *uniform;
+
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-  cogl_program_uniform_x (ctx->current_program,
-                          uniform_no, 1, 1, COGL_BOXED_FLOAT,
-                          sizeof (float), &value, FALSE);
+
+  uniform = cogl_program_modify_uniform (ctx->current_program, uniform_no);
+  _cogl_boxed_value_set_1f (&uniform->value, value);
 }
 
 void
@@ -261,19 +224,22 @@ cogl_program_set_uniform_1f (CoglHandle handle,
                              int uniform_location,
                              float value)
 {
-  cogl_program_uniform_x (handle,
-                          uniform_location, 1, 1, COGL_BOXED_FLOAT,
-                          sizeof (float), &value, FALSE);
+  CoglProgramUniform *uniform;
+
+  uniform = cogl_program_modify_uniform (handle, uniform_location);
+  _cogl_boxed_value_set_1f (&uniform->value, value);
 }
 
 void
 cogl_program_uniform_1i (int uniform_no,
                          int value)
 {
+  CoglProgramUniform *uniform;
+
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-  cogl_program_uniform_x (ctx->current_program,
-                          uniform_no, 1, 1, COGL_BOXED_INT,
-                          sizeof (int), &value, FALSE);
+
+  uniform = cogl_program_modify_uniform (ctx->current_program, uniform_no);
+  _cogl_boxed_value_set_1i (&uniform->value, value);
 }
 
 void
@@ -281,21 +247,24 @@ cogl_program_set_uniform_1i (CoglHandle handle,
                              int uniform_location,
                              int value)
 {
-  cogl_program_uniform_x (handle,
-                          uniform_location, 1, 1, COGL_BOXED_INT,
-                          sizeof (int), &value, FALSE);
+  CoglProgramUniform *uniform;
+
+  uniform = cogl_program_modify_uniform (handle, uniform_location);
+  _cogl_boxed_value_set_1i (&uniform->value, value);
 }
 
 void
 cogl_program_uniform_float (int uniform_no,
                             int size,
                             int count,
-                            const GLfloat *value)
+                            const float *value)
 {
+  CoglProgramUniform *uniform;
+
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-  cogl_program_uniform_x (ctx->current_program,
-                          uniform_no, size, count, COGL_BOXED_FLOAT,
-                          sizeof (float) * size, value, FALSE);
+
+  uniform = cogl_program_modify_uniform (ctx->current_program, uniform_no);
+  _cogl_boxed_value_set_float (&uniform->value, size, count, value);
 }
 
 void
@@ -305,22 +274,24 @@ cogl_program_set_uniform_float (CoglHandle handle,
                                 int count,
                                 const float *value)
 {
-  cogl_program_uniform_x (handle,
-                          uniform_location, n_components, count,
-                          COGL_BOXED_FLOAT,
-                          sizeof (float) * n_components, value, FALSE);
+  CoglProgramUniform *uniform;
+
+  uniform = cogl_program_modify_uniform (handle, uniform_location);
+  _cogl_boxed_value_set_float (&uniform->value, n_components, count, value);
 }
 
 void
 cogl_program_uniform_int (int uniform_no,
                           int size,
                           int count,
-                          const GLint *value)
+                          const int *value)
 {
+  CoglProgramUniform *uniform;
+
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-  cogl_program_uniform_x (ctx->current_program,
-                          uniform_no, size, count, COGL_BOXED_INT,
-                          sizeof (int) * size, value, FALSE);
+
+  uniform = cogl_program_modify_uniform (ctx->current_program, uniform_no);
+  _cogl_boxed_value_set_int (&uniform->value, size, count, value);
 }
 
 void
@@ -330,10 +301,10 @@ cogl_program_set_uniform_int (CoglHandle handle,
                               int count,
                               const int *value)
 {
-  cogl_program_uniform_x (handle,
-                          uniform_location, n_components, count,
-                          COGL_BOXED_INT,
-                          sizeof (int) * n_components, value, FALSE);
+  CoglProgramUniform *uniform;
+
+  uniform = cogl_program_modify_uniform (handle, uniform_location);
+  _cogl_boxed_value_set_int (&uniform->value, n_components, count, value);
 }
 
 void
@@ -344,14 +315,14 @@ cogl_program_set_uniform_matrix (CoglHandle handle,
                                  gboolean transpose,
                                  const float *value)
 {
-  _COGL_RETURN_IF_FAIL (cogl_is_program (handle));
-
-  cogl_program_uniform_x (handle,
-                          uniform_location, dimensions, count,
-                          COGL_BOXED_MATRIX,
-                          sizeof (float) * dimensions * dimensions,
-                          value,
-                          transpose);
+  CoglProgramUniform *uniform;
+
+  uniform = cogl_program_modify_uniform (handle, uniform_location);
+  _cogl_boxed_value_set_matrix (&uniform->value,
+                                dimensions,
+                                count,
+                                transpose,
+                                value);
 }
 
 void
@@ -361,9 +332,12 @@ cogl_program_uniform_matrix (int uniform_no,
                              gboolean transpose,
                              const float *value)
 {
+  CoglProgramUniform *uniform;
+
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-  cogl_program_set_uniform_matrix (ctx->current_program,
-                                   uniform_no, size, count, transpose, value);
+
+  uniform = cogl_program_modify_uniform (ctx->current_program, uniform_no);
+  _cogl_boxed_value_set_matrix (&uniform->value, size, count, transpose, value);
 }
 
 /* ARBfp local parameters can be referenced like:
@@ -398,84 +372,6 @@ get_local_param_index (const char *uniform_name)
   return _index;
 }
 
-static void
-_cogl_program_flush_uniform_glsl (GLint location,
-                                  CoglBoxedValue *value)
-{
-  _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
-  switch (value->type)
-    {
-    case COGL_BOXED_NONE:
-      break;
-
-    case COGL_BOXED_INT:
-      {
-        int *ptr;
-
-        if (value->count == 1)
-          ptr = value->v.int_value;
-        else
-          ptr = value->v.int_array;
-
-        switch (value->size)
-          {
-          case 1: ctx->glUniform1iv (location, value->count, ptr); break;
-          case 2: ctx->glUniform2iv (location, value->count, ptr); break;
-          case 3: ctx->glUniform3iv (location, value->count, ptr); break;
-          case 4: ctx->glUniform4iv (location, value->count, ptr); break;
-          }
-      }
-      break;
-
-    case COGL_BOXED_FLOAT:
-      {
-        float *ptr;
-
-        if (value->count == 1)
-          ptr = value->v.float_value;
-        else
-          ptr = value->v.float_array;
-
-        switch (value->size)
-          {
-          case 1: ctx->glUniform1fv (location, value->count, ptr); break;
-          case 2: ctx->glUniform2fv (location, value->count, ptr); break;
-          case 3: ctx->glUniform3fv (location, value->count, ptr); break;
-          case 4: ctx->glUniform4fv (location, value->count, ptr); break;
-          }
-      }
-      break;
-
-    case COGL_BOXED_MATRIX:
-      {
-        float *ptr;
-
-        if (value->count == 1)
-          ptr = value->v.matrix;
-        else
-          ptr = value->v.float_array;
-
-        switch (value->size)
-          {
-          case 2:
-            ctx->glUniformMatrix2fv (location, value->count,
-                                     value->transpose, ptr);
-            break;
-          case 3:
-            ctx->glUniformMatrix3fv (location, value->count,
-                                     value->transpose, ptr);
-            break;
-          case 4:
-            ctx->glUniformMatrix4fv (location, value->count,
-                                     value->transpose, ptr);
-            break;
-          }
-      }
-      break;
-    }
-}
-
 #ifdef HAVE_COGL_GL
 
 static void
@@ -536,8 +432,9 @@ _cogl_program_flush_uniforms (CoglProgram *program,
               switch (_cogl_program_get_language (program))
                 {
                 case COGL_SHADER_LANGUAGE_GLSL:
-                  _cogl_program_flush_uniform_glsl (uniform->location,
-                                                    &uniform->value);
+                  _cogl_boxed_value_set_uniform (ctx,
+                                                 uniform->location,
+                                                 &uniform->value);
                   break;
 
                 case COGL_SHADER_LANGUAGE_ARBFP: