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Avoid having to call expensive matrix identity functions

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This commit is contained in:
twinaphex 2020-09-11 14:06:42 +02:00
parent bac1f1fd51
commit 7a87917c58
2 changed files with 22 additions and 12 deletions
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15
gfx/drivers_display/gfx_display_d3d8.c
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@ -43,6 +43,14 @@ static const float d3d8_tex_coords[] = {
1, 0
};
static float d3d8_mvp_ident[16] =
{
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
};
static const float *gfx_display_d3d8_get_default_vertices(void)
{
return &d3d8_vertexes[0];
@ -55,10 +63,7 @@ static const float *gfx_display_d3d8_get_default_tex_coords(void)
static void *gfx_display_d3d8_get_default_mvp(void *data)
{
static math_matrix_4x4 id;
matrix_4x4_identity(id);
return &id;
return &d3d8_mvp_ident[0];
}
static INT32 gfx_display_prim_to_d3d8_enum(
@ -185,7 +190,7 @@ static void gfx_display_d3d8_draw(gfx_display_ctx_draw_t *draw,
d3d8_vertex_buffer_unlock(d3d->menu_display.buffer);
if (!draw->matrix_data)
draw->matrix_data = gfx_display_d3d8_get_default_mvp(d3d);
draw->matrix_data = &d3d8_mvp_ident[0];
/* ugh */
matrix_4x4_scale(m1, 2.0, 2.0, 0);

19
gfx/drivers_display/gfx_display_d3d9.c
View File

@ -43,6 +43,14 @@ static const float d3d9_tex_coords[] = {
1, 0
};
static float d3d9_mvp_ident[16] =
{
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
};
static const float *gfx_display_d3d9_get_default_vertices(void)
{
return &d3d9_vertexes[0];
@ -55,10 +63,7 @@ static const float *gfx_display_d3d9_get_default_tex_coords(void)
static void *gfx_display_d3d9_get_default_mvp(void *data)
{
static math_matrix_4x4 id;
matrix_4x4_identity(id);
return &id;
return &d3d9_mvp_ident[0];
}
static INT32 gfx_display_prim_to_d3d9_enum(
@ -147,9 +152,9 @@ static void gfx_display_d3d9_draw(gfx_display_ctx_draw_t *draw,
color = draw->coords->color;
if (!vertex)
vertex = gfx_display_d3d9_get_default_vertices();
vertex = &d3d9_vertexes[0];
if (!tex_coord)
tex_coord = gfx_display_d3d9_get_default_tex_coords();
tex_coord = &d3d9_tex_coords[0];
for (i = 0; i < draw->coords->vertices; i++)
{
@ -178,7 +183,7 @@ static void gfx_display_d3d9_draw(gfx_display_ctx_draw_t *draw,
d3d->menu_display.buffer);
if (!draw->matrix_data)
draw->matrix_data = gfx_display_d3d9_get_default_mvp(d3d);
draw->matrix_data = &d3d9_mvp_ident[0];
/* ugh */
matrix_4x4_scale(m1, 2.0, 2.0, 0);