+++ /dev/null
-/*
- * Cogl
- *
- * An object oriented GL/GLES Abstraction/Utility Layer
- *
- * Copyright (C) 2009 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, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- *
- * Authors:
- * Havoc Pennington <hp@pobox.com> for litl
- * Robert Bragg <robert@linux.intel.com>
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "cogl.h"
-#include "cogl-context.h"
-#include "cogl-internal.h"
-#include "cogl-current-matrix.h"
-#include "cogl-matrix-stack.h"
-
-#ifdef HAVE_COGL_GLES2
-#include "cogl-gles2-wrapper.h"
-
-#define glFrustum(L,R,B,T,N,F) \
- cogl_wrap_glFrustumf((GLfloat)L, (GLfloat)R, (GLfloat)B, \
- (GLfloat)T, (GLfloat)N, (GLfloat)F)
-#elif defined (HAVE_COGL_GLES)
-
-#define glFrustum(L,R,B,T,N,F) \
- glFrustumf((GLfloat)L, (GLfloat)R, (GLfloat)B, \
- (GLfloat)T, (GLfloat)N, (GLfloat)F)
-
-#define glOrtho glOrthof
-
-#endif
-
-#include <string.h>
-#include <math.h>
-
-static void
-_cogl_get_client_stack (CoglContext *ctx,
- CoglMatrixMode mode,
- CoglMatrixStack **current_stack_p)
-{
- switch (mode)
- {
- case COGL_MATRIX_MODELVIEW:
- *current_stack_p = ctx->modelview_stack;
- break;
- case COGL_MATRIX_PROJECTION:
- *current_stack_p = ctx->projection_stack;
- break;
- case COGL_MATRIX_TEXTURE:
- g_critical ("The current-matrix API doesn't support the texture matrix "
- "you must deal with the CoglMatrixStack directly");
- *current_stack_p = NULL;
- break;
- }
- g_assert (*current_stack_p);
-}
-
-#define _COGL_GET_CONTEXT_AND_STACK(contextvar, stackvar, rval) \
- CoglMatrixStack *stackvar; \
- _COGL_GET_CONTEXT (contextvar, rval); \
- _cogl_get_client_stack (contextvar, ctx->matrix_mode, &stackvar)
-
-void
-_cogl_set_current_matrix (CoglMatrixMode mode)
-{
- _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
- if (mode == ctx->matrix_mode)
- return;
- ctx->matrix_mode = mode;
-}
-
-void
-_cogl_current_matrix_push (void)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_push (current_stack);
-}
-
-void
-_cogl_current_matrix_pop (void)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_pop (current_stack);
-}
-
-void
-_cogl_current_matrix_identity (void)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_load_identity (current_stack);
-}
-
-void
-_cogl_current_matrix_load (const CoglMatrix *matrix)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_set (current_stack, matrix);
-}
-
-void
-_cogl_current_matrix_multiply (const CoglMatrix *matrix)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_multiply (current_stack, matrix);
-}
-
-void
-_cogl_current_matrix_rotate (float angle,
- float x,
- float y,
- float z)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_rotate (current_stack, angle, x, y, z);
-}
-
-void
-_cogl_current_matrix_scale (float x,
- float y,
- float z)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_scale (current_stack, x, y, z);
-}
-
-void
-_cogl_current_matrix_translate (float x,
- float y,
- float z)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_translate (current_stack, x, y, z);
-}
-
-void
-_cogl_current_matrix_frustum (float left,
- float right,
- float bottom,
- float top,
- float near_val,
- float far_val)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_frustum (current_stack,
- left, right,
- bottom, top,
- near_val,
- far_val);
-}
-
-void
-_cogl_current_matrix_perspective (float fov_y,
- float aspect,
- float z_near,
- float z_far)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_perspective (current_stack,
- fov_y, aspect, z_near, z_far);
-}
-
-void
-_cogl_current_matrix_ortho (float left,
- float right,
- float bottom,
- float top,
- float near_val,
- float far_val)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_ortho (current_stack,
- left, right,
- bottom, top,
- near_val,
- far_val);
-}
-
-void
-_cogl_get_matrix (CoglMatrixMode mode,
- CoglMatrix *matrix)
-{
- CoglMatrixStack *current_stack;
- _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
- _cogl_get_client_stack (ctx, mode, ¤t_stack);
-
- _cogl_matrix_stack_get (current_stack, matrix);
-}
-
-void
-_cogl_set_matrix (const CoglMatrix *matrix)
-{
- _cogl_current_matrix_load (matrix);
-}
-
-void
-_cogl_current_matrix_state_init (void)
-{
- _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
- ctx->matrix_mode = COGL_MATRIX_MODELVIEW;
- ctx->projection_stack = _cogl_matrix_stack_new ();
- ctx->modelview_stack = _cogl_matrix_stack_new ();
-}
-
-void
-_cogl_current_matrix_state_destroy (void)
-{
- _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
- _cogl_matrix_stack_destroy (ctx->projection_stack);
- _cogl_matrix_stack_destroy (ctx->modelview_stack);
-}
-
-void
-_cogl_current_matrix_state_flush (void)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_flush_to_gl (current_stack, ctx->matrix_mode);
-}
-
-void
-_cogl_current_matrix_state_dirty (void)
-{
- _COGL_GET_CONTEXT_AND_STACK (ctx, current_stack, NO_RETVAL);
- _cogl_matrix_stack_dirty (current_stack);
-}
-
-void
-cogl_push_matrix (void)
-{
- _cogl_set_current_matrix (COGL_MATRIX_MODELVIEW);
- _cogl_current_matrix_push ();
-}
-
-void
-cogl_pop_matrix (void)
-{
- _cogl_set_current_matrix (COGL_MATRIX_MODELVIEW);
- _cogl_current_matrix_pop ();
-}
-
-void
-cogl_scale (float x, float y, float z)
-{
- _cogl_set_current_matrix (COGL_MATRIX_MODELVIEW);
- _cogl_current_matrix_scale (x, y, z);
-}
-
-void
-cogl_translate (float x, float y, float z)
-{
- _cogl_set_current_matrix (COGL_MATRIX_MODELVIEW);
- _cogl_current_matrix_translate (x, y, z);
-}
-
-void
-cogl_rotate (float angle, float x, float y, float z)
-{
- _cogl_set_current_matrix (COGL_MATRIX_MODELVIEW);
- _cogl_current_matrix_rotate (angle, x, y, z);
-}
-
-void
-cogl_perspective (float fov_y,
- float aspect,
- float z_near,
- float z_far)
-{
- float ymax = z_near * tanf (fov_y * G_PI / 360.0);
-
- cogl_frustum (-ymax * aspect, /* left */
- ymax * aspect, /* right */
- -ymax, /* bottom */
- ymax, /* top */
- z_near,
- z_far);
-}
-
-void
-cogl_frustum (float left,
- float right,
- float bottom,
- float top,
- float z_near,
- float z_far)
-{
- float c, d;
-
- _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
- _cogl_set_current_matrix (COGL_MATRIX_PROJECTION);
- _cogl_current_matrix_identity ();
-
- _cogl_current_matrix_frustum (left,
- right,
- bottom,
- top,
- z_near,
- z_far);
-
- /* Calculate and store the inverse of the matrix */
- memset (ctx->inverse_projection, 0, sizeof (float) * 16);
-
- c = - (z_far + z_near) / (z_far - z_near);
- d = - (2 * (z_far * z_near)) / (z_far - z_near);
-
-#define M(row,col) ctx->inverse_projection[col*4+row]
- M(0,0) = (right - left) / (2 * z_near);
- M(0,3) = (right + left) / (2 * z_near);
- M(1,1) = (top - bottom) / (2 * z_near);
- M(1,3) = (top + bottom) / (2 * z_near);
- M(2,3) = -1.0;
- M(3,2) = 1.0 / d;
- M(3,3) = c / d;
-#undef M
-
- _cogl_set_current_matrix (COGL_MATRIX_MODELVIEW);
-}
-
-void
-cogl_ortho (float left,
- float right,
- float bottom,
- float top,
- float z_near,
- float z_far)
-{
- CoglMatrix ortho;
- _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
- cogl_matrix_init_identity (&ortho);
- cogl_matrix_ortho (&ortho, left, right, bottom, top, z_near, z_far);
- _cogl_set_current_matrix (COGL_MATRIX_PROJECTION);
- _cogl_current_matrix_load (&ortho);
-
- /* Calculate and store the inverse of the matrix */
- memset (ctx->inverse_projection, 0, sizeof (float) * 16);
-
-#define M(row,col) ctx->inverse_projection[col*4+row]
- M(0,0) = 1.0 / ortho.xx;
- M(0,3) = -ortho.xw;
- M(1,1) = 1.0 / ortho.yy;
- M(1,3) = -ortho.yw;
- M(2,2) = 1.0 / ortho.zz;
- M(2,3) = -ortho.zw;
- M(3,3) = 1.0;
-#undef M
-}
-
-void
-cogl_get_modelview_matrix (CoglMatrix *matrix)
-{
- _cogl_get_matrix (COGL_MATRIX_MODELVIEW,
- matrix);
-}
-
-void
-cogl_set_modelview_matrix (CoglMatrix *matrix)
-{
- _cogl_set_current_matrix (COGL_MATRIX_MODELVIEW);
- _cogl_current_matrix_load (matrix);
-}
-
-void
-cogl_get_projection_matrix (CoglMatrix *matrix)
-{
- _cogl_get_matrix (COGL_MATRIX_PROJECTION,
- matrix);
-}
-
-void
-cogl_set_projection_matrix (CoglMatrix *matrix)
-{
- _cogl_set_current_matrix (COGL_MATRIX_PROJECTION);
- _cogl_current_matrix_load (matrix);
-}
-
-void
-_cogl_flush_matrix_stacks (void)
-{
- _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
- _cogl_matrix_stack_flush_to_gl (ctx->projection_stack, COGL_MATRIX_PROJECTION);
- _cogl_matrix_stack_flush_to_gl (ctx->modelview_stack, COGL_MATRIX_MODELVIEW);
-}
-
projects / profile / ivi / clutter.git / commitdiff