static void clear_textures(struct gs_device *device)
{
GLenum i;
for (i = 0; i < GS_MAX_TEXTURES; i++) {
if (device->cur_textures[i]) {
gl_active_texture(GL_TEXTURE0 + i);
gl_bind_texture(device->cur_textures[i]->gl_target, 0);
device->cur_textures[i] = NULL;
}
}
}
void device_load_texture(gs_device_t *device, gs_texture_t *tex, int unit)
{
struct gs_shader_param *param;
struct gs_sampler_state *sampler;
struct gs_texture *cur_tex = device->cur_textures[unit];
/* need a pixel shader to properly bind textures */
if (!device->cur_pixel_shader)
tex = NULL;
if (cur_tex == tex)
return;
if (!gl_active_texture(GL_TEXTURE0 + unit))
goto fail;
/* the target for the previous text may not be the same as the
* next texture, so unbind the previous texture first to be safe */
if (cur_tex && (!tex || cur_tex->gl_target != tex->gl_target))
gl_bind_texture(cur_tex->gl_target, 0);
device->cur_textures[unit] = tex;
param = get_texture_param(device, unit);
if (!param)
return;
param->texture = tex;
if (!tex)
return;
// texelFetch doesn't need a sampler
if (param->sampler_id != (size_t)-1)
sampler = device->cur_samplers[param->sampler_id];
else
sampler = NULL;
if (!gl_bind_texture(tex->gl_target, tex->texture))
goto fail;
if (sampler && !load_texture_sampler(tex, sampler))
goto fail;
return;
fail:
blog(LOG_ERROR, "device_load_texture (GL) failed");
}
void device_load_texture(device_t device, texture_t tex, int unit)
{
struct shader_param *param;
struct gs_sampler_state *sampler;
struct gs_texture *cur_tex = device->cur_textures[unit];
/* need a pixel shader to properly bind textures */
if (!device->cur_pixel_shader)
tex = NULL;
if (cur_tex == tex)
return;
if (!gl_active_texture(GL_TEXTURE0 + unit))
goto fail;
if (cur_tex && cur_tex->gl_target != tex->gl_target)
gl_bind_texture(cur_tex->gl_target, 0);
device->cur_textures[unit] = tex;
param = get_texture_param(device, unit);
if (!param)
return;
param->texture = tex;
if (!tex)
return;
sampler = device->cur_samplers[param->sampler_id];
if (!gl_bind_texture(tex->gl_target, tex->texture))
goto fail;
if (sampler && !load_texture_sampler(tex, sampler))
goto fail;
return;
fail:
blog(LOG_ERROR, "device_load_texture (GL) failed");
}
static bool load_sampler_on_textures(device_t device, samplerstate_t ss,
int sampler_unit)
{
struct gs_shader *shader = device->cur_pixel_shader;
size_t i;
for (i = 0; i < shader->params.num; i++) {
struct shader_param *param = shader->params.array+i;
if (param->type == SHADER_PARAM_TEXTURE &&
param->sampler_id == (uint32_t)sampler_unit &&
param->texture) {
if (!gl_active_texture(GL_TEXTURE0 + param->texture_id))
return false;
if (!load_texture_sampler(param->texture, ss))
return false;
}
}
return true;
}
