void glBegin(GLenum mode)
{
GET_CURRENT_CONTEXT(ctx);
switch (mode) {
case GL_POINTS:
case GL_LINES:
case GL_LINE_LOOP:
case GL_TRIANGLES:
case GL_TRIANGLE_STRIP:
case GL_QUADS:
break;
default:
_sgl_error(ctx, GL_INVALID_ENUM, "glBegin(): Invalid mode\n");
return;
}
ctx->render_state.type = 0;
ctx->render_state.current_exec_primitive = mode;
_math_matrix_mul_matrix(&ctx->model_projection_matrix,
&ctx->viewport.window_map,
ctx->projection_matrix_stack.top);
_math_matrix_mul_matrix(&ctx->model_projection_matrix,
&ctx->model_projection_matrix,
ctx->modelview_matrix_stack.top);
}
void glDrawElements(GLenum mode, GLsizei count,
GLenum type, const GLvoid *indices)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!(ctx->clientstate_flags & GL_VERTEX_ARRAY))
return;
_math_matrix_mul_matrix(&ctx->model_projection_matrix,
&ctx->viewport.window_map,
ctx->projection_matrix_stack.top);
_math_matrix_mul_matrix(&ctx->model_projection_matrix,
&ctx->model_projection_matrix,
ctx->modelview_matrix_stack.top);
switch (mode) {
case GL_POINTS:
case GL_LINES:
case GL_TRIANGLES:
case GL_QUADS:
break;
default:
_sgl_error(ctx, GL_INVALID_ENUM, "glDrawElements(): Invalid mode\n");
return;
}
ctx->varray.mode = mode;
ctx->varray.count = count;
ctx->varray.type = type;
ctx->varray.indices_ptr = indices;
ctx->render_state.type = GL_VERTEX_ARRAY;
_sgl_pipeline_iteration();
}
/**
* Calculate the combined modelview-projection matrix.
*
* \param ctx GL context.
*
* Multiplies the top matrices of the projection and model view stacks into
* __struct gl_contextRec::_ModelProjectMatrix via _math_matrix_mul_matrix()
* and analyzes the resulting matrix via _math_matrix_analyse().
*/
static void
calculate_model_project_matrix( struct gl_context *ctx )
{
_math_matrix_mul_matrix( &ctx->_ModelProjectMatrix,
ctx->ProjectionMatrixStack.Top,
ctx->ModelviewMatrixStack.Top );
_math_matrix_analyse( &ctx->_ModelProjectMatrix );
}
static void
calculate_model_project_matrix( GLcontext *ctx )
{
_math_matrix_mul_matrix( &ctx->_ModelProjectMatrix,
&ctx->ProjectionMatrix,
&ctx->ModelView );
_math_matrix_analyse( &ctx->_ModelProjectMatrix );
}