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Merge pull request #3666 from loganmc10/glUniformMatrix4fv

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Only call glUniformMatrix4fv if needed
This commit is contained in:
Twinaphex 2016-09-27 02:50:16 +02:00 committed by GitHub
commit 7d64fdabf9
1 changed files with 7 additions and 3 deletions
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10
gfx/drivers_shader/shader_glsl.c
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@ -1256,6 +1256,7 @@ static void gl_glsl_set_params(void *data, void *shader_data,
static bool gl_glsl_set_mvp(void *data, void *shader_data, const math_matrix_4x4 *mat)
{
static float current_mat_data[GFX_MAX_SHADERS];
int loc;
glsl_shader_data_t *glsl = (glsl_shader_data_t*)shader_data;
@ -1265,9 +1266,12 @@ static bool gl_glsl_set_mvp(void *data, void *shader_data, const math_matrix_4x4
goto fallback;
loc = glsl->uniforms[glsl->active_idx].mvp;
if (loc >= 0)
glUniformMatrix4fv(loc, 1, GL_FALSE, mat->data);
if (loc >= 0) {
if (*mat->data != current_mat_data[loc]) {
glUniformMatrix4fv(loc, 1, GL_FALSE, mat->data);
current_mat_data[loc] = *mat->data;
}
}
return true;
fallback: