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mesa: Implement CreateVertexArrays

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v2: Update the documentation for gen_vertex_arrays().

Reviewed-by: Laura Ekstrand <laura@jlekstrand.net>
This commit is contained in:
Fredrik Höglund
2015-03-02 18:22:50 +01:00
parent e51bad669a
commit a1f48268b4
4 changed files with 38 additions and 8 deletions
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36
src/mesa/main/arrayobj.c
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@@ -481,19 +481,23 @@ _mesa_DeleteVertexArrays(GLsizei n, const GLuint *ids)
/**
* Generate a set of unique array object IDs and store them in \c arrays.
* Helper for _mesa_GenVertexArrays[APPLE]() functions below.
* Helper for _mesa_GenVertexArrays[APPLE]() and _mesa_CreateVertexArrays()
* below.
*
* \param n Number of IDs to generate.
* \param arrays Array of \c n locations to store the IDs.
* \param vboOnly Will arrays have to reside in VBOs?
* \param create Indicates that the objects should also be created.
* \param func The name of the GL entry point.
*/
static void
gen_vertex_arrays(struct gl_context *ctx, GLsizei n, GLuint *arrays)
gen_vertex_arrays(struct gl_context *ctx, GLsizei n, GLuint *arrays,
bool create, const char *func)
{
GLuint first;
GLint i;
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenVertexArrays");
_mesa_error(ctx, GL_INVALID_VALUE, "%s(n < 0)", func);
return;
}
@@ -503,16 +507,20 @@ gen_vertex_arrays(struct gl_context *ctx, GLsizei n, GLuint *arrays)
first = _mesa_HashFindFreeKeyBlock(ctx->Array.Objects, n);
/* Allocate new, empty array objects and return identifiers */
/* For the sake of simplicity we create the array objects in both
* the Gen* and Create* cases. The only difference is the value of
* EverBound, which is set to true in the Create* case.
*/
for (i = 0; i < n; i++) {
struct gl_vertex_array_object *obj;
GLuint name = first + i;
obj = (*ctx->Driver.NewArrayObject)( ctx, name );
if (!obj) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenVertexArrays");
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s", func);
return;
}
obj->EverBound = create;
save_array_object(ctx, obj);
arrays[i] = first + i;
}
@@ -527,7 +535,7 @@ void GLAPIENTRY
_mesa_GenVertexArrays(GLsizei n, GLuint *arrays)
{
GET_CURRENT_CONTEXT(ctx);
gen_vertex_arrays(ctx, n, arrays);
gen_vertex_arrays(ctx, n, arrays, false, "glGenVertexArrays");
}
@@ -539,7 +547,19 @@ void GLAPIENTRY
_mesa_GenVertexArraysAPPLE(GLsizei n, GLuint *arrays)
{
GET_CURRENT_CONTEXT(ctx);
gen_vertex_arrays(ctx, n, arrays);
gen_vertex_arrays(ctx, n, arrays, false, "glGenVertexArraysAPPLE");
}
/**
* ARB_direct_state_access
* Generates ID's and creates the array objects.
*/
void GLAPIENTRY
_mesa_CreateVertexArrays(GLsizei n, GLuint *arrays)
{
GET_CURRENT_CONTEXT(ctx);
gen_vertex_arrays(ctx, n, arrays, true, "glCreateVertexArrays");
}