[Mesa-dev] [PATCH 02/11] mesa: Split out the format code from update_array()
Fredrik Höglund
fredrik at kde.org
Mon Oct 28 23:33:45 CET 2013
Split out the code for updating the array format into a new function
called update_array_format(). This function will be called by both
update_array() and the new glVertexAttrib*Format() entry points in
ARB_vertex_attrib_binding.
---
src/mesa/main/varray.c | 144 ++++++++++++++++++++++++++++++------------------
1 file changed, 90 insertions(+), 54 deletions(-)
diff --git a/src/mesa/main/varray.c b/src/mesa/main/varray.c
index 24cd324..f3cd928 100644
--- a/src/mesa/main/varray.c
+++ b/src/mesa/main/varray.c
@@ -103,52 +103,33 @@ type_to_bit(const struct gl_context *ctx, GLenum type)
/**
- * Do error checking and update state for glVertex/Color/TexCoord/...Pointer
- * functions.
+ * Does error checking and updates the format in an attrib array.
*
- * \param func name of calling function used for error reporting
- * \param attrib the attribute array index to update
- * \param legalTypes bitmask of *_BIT above indicating legal datatypes
- * \param sizeMin min allowable size value
- * \param sizeMax max allowable size value (may also be BGRA_OR_4)
- * \param size components per element (1, 2, 3 or 4)
- * \param type datatype of each component (GL_FLOAT, GL_INT, etc)
- * \param stride stride between elements, in elements
- * \param normalized are integer types converted to floats in [-1, 1]?
- * \param integer integer-valued values (will not be normalized to [-1,1])
- * \param ptr the address (or offset inside VBO) of the array data
+ * Called by update_array().
+ *
+ * \param func Name of calling function used for error reporting
+ * \param attrib The index of the attribute array
+ * \param legalTypes Bitmask of *_BIT above indicating legal datatypes
+ * \param sizeMin Min allowable size value
+ * \param sizeMax Max allowable size value (may also be BGRA_OR_4)
+ * \param size Components per element (1, 2, 3 or 4)
+ * \param type Datatype of each component (GL_FLOAT, GL_INT, etc)
+ * \param normalized Whether integer types are converted to floats in [-1, 1]
+ * \param integer Integer-valued values (will not be normalized to [-1, 1])
*/
-static void
-update_array(struct gl_context *ctx,
- const char *func,
- GLuint attrib, GLbitfield legalTypesMask,
- GLint sizeMin, GLint sizeMax,
- GLint size, GLenum type, GLsizei stride,
- GLboolean normalized, GLboolean integer,
- const GLvoid *ptr)
+static GLboolean
+update_array_format(struct gl_context *ctx,
+ const char *func,
+ GLuint attrib, GLbitfield legalTypesMask,
+ GLint sizeMin, GLint sizeMax,
+ GLint size, GLenum type,
+ GLboolean normalized, GLboolean integer)
{
struct gl_client_array *array;
GLbitfield typeBit;
- GLsizei elementSize;
+ GLuint elementSize;
GLenum format = GL_RGBA;
- /* Page 407 (page 423 of the PDF) of the OpenGL 3.0 spec says:
- *
- * "Client vertex arrays - all vertex array attribute pointers must
- * refer to buffer objects (section 2.9.2). The default vertex array
- * object (the name zero) is also deprecated. Calling
- * VertexAttribPointer when no buffer object or no vertex array object
- * is bound will generate an INVALID_OPERATION error..."
- *
- * The check for VBOs is handled below.
- */
- if (ctx->API == API_OPENGL_CORE
- && (ctx->Array.ArrayObj == ctx->Array.DefaultArrayObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "%s(no array object bound)",
- func);
- return;
- }
-
if (_mesa_is_gles(ctx)) {
legalTypesMask &= ~(FIXED_GL_BIT | DOUBLE_BIT);
@@ -186,7 +167,7 @@ update_array(struct gl_context *ctx,
if (typeBit == 0x0 || (typeBit & legalTypesMask) == 0x0) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)",
func, _mesa_lookup_enum_by_nr(type));
- return;
+ return GL_FALSE;
}
/* Do size parameter checking.
@@ -219,13 +200,13 @@ update_array(struct gl_context *ctx,
if (bgra_error) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(size=GL_BGRA and type=%s)",
func, _mesa_lookup_enum_by_nr(type));
- return;
+ return GL_FALSE;
}
if (!normalized) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(size=GL_BGRA and normalized=GL_FALSE)", func);
- return;
+ return GL_FALSE;
}
format = GL_BGRA;
@@ -233,18 +214,82 @@ update_array(struct gl_context *ctx,
}
else if (size < sizeMin || size > sizeMax || size > 4) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d)", func, size);
- return;
+ return GL_FALSE;
}
if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
(type == GL_UNSIGNED_INT_2_10_10_10_REV ||
type == GL_INT_2_10_10_10_REV) && size != 4) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(size=%d)", func, size);
- return;
+ return GL_FALSE;
}
ASSERT(size <= 4);
+ elementSize = _mesa_bytes_per_vertex_attrib(size, type);
+ assert(elementSize != -1);
+
+ array = &ctx->Array.ArrayObj->VertexAttrib[attrib];
+ array->Size = size;
+ array->Type = type;
+ array->Format = format;
+ array->Normalized = normalized;
+ array->Integer = integer;
+ array->_ElementSize = elementSize;
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Do error checking and update state for glVertex/Color/TexCoord/...Pointer
+ * functions.
+ *
+ * \param func name of calling function used for error reporting
+ * \param attrib the attribute array index to update
+ * \param legalTypes bitmask of *_BIT above indicating legal datatypes
+ * \param sizeMin min allowable size value
+ * \param sizeMax max allowable size value (may also be BGRA_OR_4)
+ * \param size components per element (1, 2, 3 or 4)
+ * \param type datatype of each component (GL_FLOAT, GL_INT, etc)
+ * \param stride stride between elements, in elements
+ * \param normalized are integer types converted to floats in [-1, 1]?
+ * \param integer integer-valued values (will not be normalized to [-1,1])
+ * \param ptr the address (or offset inside VBO) of the array data
+ */
+static void
+update_array(struct gl_context *ctx,
+ const char *func,
+ GLuint attrib, GLbitfield legalTypesMask,
+ GLint sizeMin, GLint sizeMax,
+ GLint size, GLenum type, GLsizei stride,
+ GLboolean normalized, GLboolean integer,
+ const GLvoid *ptr)
+{
+ struct gl_client_array *array;
+
+ /* Page 407 (page 423 of the PDF) of the OpenGL 3.0 spec says:
+ *
+ * "Client vertex arrays - all vertex array attribute pointers must
+ * refer to buffer objects (section 2.9.2). The default vertex array
+ * object (the name zero) is also deprecated. Calling
+ * VertexAttribPointer when no buffer object or no vertex array object
+ * is bound will generate an INVALID_OPERATION error..."
+ *
+ * The check for VBOs is handled below.
+ */
+ if (ctx->API == API_OPENGL_CORE
+ && (ctx->Array.ArrayObj == ctx->Array.DefaultArrayObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "%s(no array object bound)",
+ func);
+ return;
+ }
+
+ if (!update_array_format(ctx, func, attrib, legalTypesMask, sizeMin, sizeMax,
+ size, type, normalized, integer)) {
+ return;
+ }
+
if (stride < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "%s(stride=%d)", func, stride );
return;
@@ -268,19 +313,10 @@ update_array(struct gl_context *ctx,
return;
}
- elementSize = _mesa_bytes_per_vertex_attrib(size, type);
- assert(elementSize != -1);
-
array = &ctx->Array.ArrayObj->VertexAttrib[attrib];
- array->Size = size;
- array->Type = type;
- array->Format = format;
array->Stride = stride;
- array->StrideB = stride ? stride : elementSize;
- array->Normalized = normalized;
- array->Integer = integer;
+ array->StrideB = stride ? stride : array->_ElementSize;
array->Ptr = (const GLubyte *) ptr;
- array->_ElementSize = elementSize;
_mesa_reference_buffer_object(ctx, &array->BufferObj,
ctx->Array.ArrayBufferObj);
--
1.7.10.4
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