void gr_opengl_start_instance_matrix(const vec3d *offset, const matrix *rotation)
{
Assert( GL_htl_projection_matrix_set );
Assert( GL_htl_view_matrix_set );
if (offset == NULL) {
offset = &vmd_zero_vector;
}
if (rotation == NULL) {
rotation = &vmd_identity_matrix;
}
GL_CHECK_FOR_ERRORS("start of start_instance_matrix()");
vec3d axis;
float ang;
vm_matrix_to_rot_axis_and_angle(rotation, &ang, &axis);
GL_model_matrix_stack.push(offset, rotation);
matrix4 model_matrix = GL_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&GL_model_view_matrix, &GL_view_matrix, &model_matrix);
GL_CHECK_FOR_ERRORS("end of start_instance_matrix()");
GL_modelview_matrix_depth++;
}
// set a view and projection matrix for a 2D element
// TODO: this probably needs to accept values
void gr_set_2d_matrix(/*int x, int y, int w, int h*/)
{
// don't bother with this if we aren't even going to need it
if (!gr_htl_projection_matrix_set) {
return;
}
Assert( htl_2d_matrix_set == 0 );
Assert( htl_2d_matrix_depth == 0 );
// the viewport needs to be the full screen size since glOrtho() is relative to it
gr_set_viewport(0, 0, gr_screen.max_w, gr_screen.max_h);
gr_last_projection_matrix = gr_projection_matrix;
// the top and bottom positions are reversed on purpose, but RTT needs them the other way
if (gr_screen.rendering_to_texture != -1) {
create_orthographic_projection_matrix(&gr_projection_matrix, 0, i2fl(gr_screen.max_w), 0, i2fl(gr_screen.max_h), -1, 1);
} else {
create_orthographic_projection_matrix(&gr_projection_matrix, 0, i2fl(gr_screen.max_w), i2fl(gr_screen.max_h), 0, -1, 1);
}
matrix4 identity_mat;
vm_matrix4_set_identity(&identity_mat);
gr_model_matrix_stack.push_and_replace(identity_mat);
gr_last_view_matrix = gr_view_matrix;
gr_view_matrix = identity_mat;
vm_matrix4_x_matrix4(&gr_model_view_matrix, &gr_view_matrix, &identity_mat);
htl_2d_matrix_set = true;
htl_2d_matrix_depth++;
}
void gr_end_instance_matrix()
{
Assert(htl_view_matrix_set);
gr_model_matrix_stack.pop();
auto model_matrix = gr_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&gr_model_view_matrix, &gr_view_matrix, &model_matrix);
modelview_matrix_depth--;
}
void gr_opengl_end_instance_matrix()
{
Assert(GL_htl_projection_matrix_set);
Assert(GL_htl_view_matrix_set);
GL_model_matrix_stack.pop();
matrix4 model_matrix = GL_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&GL_model_view_matrix, &GL_view_matrix, &model_matrix);
GL_modelview_matrix_depth--;
}
void gr_pop_scale_matrix()
{
if (!scale_matrix_set)
return;
gr_model_matrix_stack.pop();
auto model_matrix = gr_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&gr_model_view_matrix, &gr_view_matrix, &model_matrix);
modelview_matrix_depth--;
scale_matrix_set = false;
}
void gr_opengl_pop_scale_matrix()
{
if (!GL_scale_matrix_set)
return;
GL_model_matrix_stack.pop();
matrix4 model_matrix = GL_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&GL_model_view_matrix, &GL_view_matrix, &model_matrix);
GL_modelview_matrix_depth--;
GL_scale_matrix_set = false;
}
void gr_push_scale_matrix(const vec3d *scale_factor)
{
if ( (scale_factor->xyz.x == 1) && (scale_factor->xyz.y == 1) && (scale_factor->xyz.z == 1) )
return;
scale_matrix_set = true;
modelview_matrix_depth++;
gr_model_matrix_stack.push(NULL, NULL, scale_factor);
auto model_matrix = gr_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&gr_model_view_matrix, &gr_view_matrix, &model_matrix);
}
void gr_opengl_push_scale_matrix(const vec3d *scale_factor)
{
if ( (scale_factor->xyz.x == 1) && (scale_factor->xyz.y == 1) && (scale_factor->xyz.z == 1) )
return;
GL_scale_matrix_set = true;
GL_modelview_matrix_depth++;
GL_model_matrix_stack.push(NULL, NULL, scale_factor);
matrix4 model_matrix = GL_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&GL_model_view_matrix, &GL_view_matrix, &model_matrix);
}
// ends a previously set 2d view and projection matrix
void gr_end_2d_matrix()
{
if (!htl_2d_matrix_set)
return;
Assert( htl_2d_matrix_depth == 1 );
// reset viewport to what it was originally set to by the proj matrix
gr_set_viewport(gr_screen.offset_x, (gr_screen.max_h - gr_screen.offset_y - gr_screen.clip_height), gr_screen.clip_width, gr_screen.clip_height);
gr_projection_matrix = gr_last_projection_matrix;
gr_model_matrix_stack.pop();
gr_view_matrix = gr_last_view_matrix;
auto model_matrix = gr_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&gr_model_view_matrix, &gr_view_matrix, &model_matrix);
htl_2d_matrix_set = false;
htl_2d_matrix_depth = 0;
}
// ends a previously set 2d view and projection matrix
void gr_opengl_end_2d_matrix()
{
if (!GL_htl_2d_matrix_set)
return;
Assert( GL_htl_2d_matrix_depth == 1 );
// reset viewport to what it was originally set to by the proj matrix
glViewport(gr_screen.offset_x, (gr_screen.max_h - gr_screen.offset_y - gr_screen.clip_height), gr_screen.clip_width, gr_screen.clip_height);
GL_projection_matrix = GL_last_projection_matrix;
GL_model_matrix_stack.pop();
GL_view_matrix = GL_last_view_matrix;
matrix4 model_matrix = GL_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&GL_model_view_matrix, &GL_view_matrix, &model_matrix);
GL_htl_2d_matrix_set = 0;
GL_htl_2d_matrix_depth = 0;
}
void gr_start_instance_matrix(const vec3d *offset, const matrix *rotation)
{
Assert( htl_view_matrix_set );
if (offset == NULL) {
offset = &vmd_zero_vector;
}
if (rotation == NULL) {
rotation = &vmd_identity_matrix;
}
vec3d axis;
float ang;
vm_matrix_to_rot_axis_and_angle(rotation, &ang, &axis);
gr_model_matrix_stack.push(offset, rotation);
auto model_matrix = gr_model_matrix_stack.get_transform();
vm_matrix4_x_matrix4(&gr_model_view_matrix, &gr_view_matrix, &model_matrix);
modelview_matrix_depth++;
}
void convert_model_material(model_uniform_data* data_out,
const model_material& material,
const matrix4& model_transform,
const vec3d& scale,
size_t transform_buffer_offset) {
auto shader_flags = material.get_shader_flags();
Assertion(gr_model_matrix_stack.depth() == 1, "Uniform conversion does not respect previous transforms! "
"Model matrix stack must be empty!");
matrix4 scaled_matrix = model_transform;
scale_matrix(scaled_matrix, scale);
data_out->modelMatrix = scaled_matrix;
data_out->viewMatrix = gr_view_matrix;
vm_matrix4_x_matrix4(&data_out->modelViewMatrix, &data_out->viewMatrix, &data_out->modelMatrix);
data_out->projMatrix = gr_projection_matrix;
data_out->textureMatrix = gr_texture_matrix;
data_out->color = material.get_color();
if (shader_flags & SDR_FLAG_MODEL_ANIMATED) {
data_out->anim_timer = material.get_animated_effect_time();
data_out->effect_num = material.get_animated_effect();
data_out->vpwidth = 1.0f / i2fl(gr_screen.max_w);
data_out->vpheight = 1.0f / i2fl(gr_screen.max_h);
}
if (shader_flags & SDR_FLAG_MODEL_CLIP) {
if (material.is_clipped()) {
auto& clip_info = material.get_clip_plane();
data_out->use_clip_plane = true;
vec4 clip_equation;
clip_equation.xyzw.x = clip_info.normal.xyz.x;
clip_equation.xyzw.y = clip_info.normal.xyz.y;
clip_equation.xyzw.z = clip_info.normal.xyz.z;
clip_equation.xyzw.w = -vm_vec_dot(&clip_info.normal, &clip_info.position);
data_out->clip_equation = clip_equation;
} else {
data_out->use_clip_plane = false;
}
}
if (shader_flags & SDR_FLAG_MODEL_LIGHT) {
int num_lights = MIN(Num_active_gr_lights, (int)graphics::MAX_UNIFORM_LIGHTS);
data_out->n_lights = num_lights;
std::copy(std::begin(gr_light_uniforms), std::end(gr_light_uniforms), std::begin(data_out->lights));
float light_factor = material.get_light_factor();
data_out->diffuseFactor.xyz.x = gr_light_color[0] * light_factor;
data_out->diffuseFactor.xyz.y = gr_light_color[1] * light_factor;
data_out->diffuseFactor.xyz.z = gr_light_color[2] * light_factor;
data_out->ambientFactor.xyz.x = gr_light_ambient[0];
data_out->ambientFactor.xyz.y = gr_light_ambient[1];
data_out->ambientFactor.xyz.z = gr_light_ambient[2];
if (material.get_light_factor() > 0.25f && !Cmdline_no_emissive) {
data_out->emissionFactor.xyz.x = gr_light_emission[0];
data_out->emissionFactor.xyz.y = gr_light_emission[1];
data_out->emissionFactor.xyz.z = gr_light_emission[2];
} else {
data_out->emissionFactor.xyz.x = gr_light_zero[0];
data_out->emissionFactor.xyz.y = gr_light_zero[1];
data_out->emissionFactor.xyz.z = gr_light_zero[2];
}
if (Gloss_override_set) {
data_out->defaultGloss = Gloss_override;
} else {
data_out->defaultGloss = 0.6f;
}
}
if (shader_flags & SDR_FLAG_MODEL_DIFFUSE_MAP) {
if (material.is_desaturated()) {
data_out->desaturate = 1;
} else {
data_out->desaturate = 0;
}
if (Basemap_color_override_set) {
data_out->overrideDiffuse = 1;
data_out->diffuseClr.xyz.x = Basemap_color_override[0];
data_out->diffuseClr.xyz.y = Basemap_color_override[1];
data_out->diffuseClr.xyz.z = Basemap_color_override[2];
} else {
data_out->overrideDiffuse = 0;
}
switch (material.get_blend_mode()) {
case ALPHA_BLEND_PREMULTIPLIED:
data_out->blend_alpha = 1;
break;
case ALPHA_BLEND_ADDITIVE:
data_out->blend_alpha = 2;
break;
default:
data_out->blend_alpha = 0;
break;
}
data_out->sBasemapIndex = bm_get_array_index(material.get_texture_map(TM_BASE_TYPE));
}
if (shader_flags & SDR_FLAG_MODEL_GLOW_MAP) {
if (Glowmap_color_override_set) {
data_out->overrideGlow = 1;
data_out->glowClr.xyz.x = Glowmap_color_override[0];
data_out->glowClr.xyz.y = Glowmap_color_override[1];
data_out->glowClr.xyz.z = Glowmap_color_override[2];
} else {
data_out->overrideGlow = 0;
}
data_out->sGlowmapIndex = bm_get_array_index(material.get_texture_map(TM_GLOW_TYPE));
}
if (shader_flags & SDR_FLAG_MODEL_SPEC_MAP) {
if (Specmap_color_override_set) {
data_out->overrideSpec = 1;
data_out->specClr.xyz.x = Specmap_color_override[0];
data_out->specClr.xyz.y = Specmap_color_override[1];
data_out->specClr.xyz.z = Specmap_color_override[2];
} else {
data_out->overrideSpec = 0;
}
if (material.get_texture_map(TM_SPEC_GLOSS_TYPE) > 0) {
data_out->sSpecmapIndex = bm_get_array_index(material.get_texture_map(TM_SPEC_GLOSS_TYPE));
data_out->gammaSpec = 1;
if (Gloss_override_set) {
data_out->alphaGloss = 0;
} else {
data_out->alphaGloss = 1;
}
} else {
data_out->sSpecmapIndex = bm_get_array_index(material.get_texture_map(TM_SPECULAR_TYPE));
data_out->gammaSpec = 0;
data_out->alphaGloss = 0;
}
if (shader_flags & SDR_FLAG_MODEL_ENV_MAP) {
if (material.get_texture_map(TM_SPEC_GLOSS_TYPE) > 0 || Gloss_override_set) {
data_out->envGloss = 1;
} else {
data_out->envGloss = 0;
}
data_out->envMatrix = gr_env_texture_matrix;
}
}
if ( shader_flags & SDR_FLAG_MODEL_NORMAL_MAP ) {
data_out->sNormalmapIndex = bm_get_array_index(material.get_texture_map(TM_NORMAL_TYPE));
}
if ( shader_flags & SDR_FLAG_MODEL_AMBIENT_MAP ) {
data_out->sAmbientmapIndex = bm_get_array_index(material.get_texture_map(TM_AMBIENT_TYPE));
}
if ( shader_flags & SDR_FLAG_MODEL_MISC_MAP ) {
data_out->sMiscmapIndex = bm_get_array_index(material.get_texture_map(TM_MISC_TYPE));
}
if (shader_flags & SDR_FLAG_MODEL_SHADOWS) {
data_out->shadow_mv_matrix = Shadow_view_matrix;
for (size_t i = 0; i < MAX_SHADOW_CASCADES; ++i) {
data_out->shadow_proj_matrix[i] = Shadow_proj_matrix[i];
}
data_out->veryneardist = Shadow_cascade_distances[0];
data_out->neardist = Shadow_cascade_distances[1];
data_out->middist = Shadow_cascade_distances[2];
data_out->fardist = Shadow_cascade_distances[3];
}
if (shader_flags & SDR_FLAG_MODEL_SHADOW_MAP) {
for (size_t i = 0; i < MAX_SHADOW_CASCADES; ++i) {
data_out->shadow_proj_matrix[i] = Shadow_proj_matrix[i];
}
}
if (shader_flags & SDR_FLAG_MODEL_TRANSFORM) {
data_out->buffer_matrix_offset = (int) transform_buffer_offset;
}
// Team colors are passed to the shader here, but the shader needs to handle their application.
// By default, this is handled through the r and g channels of the misc map, but this can be changed
// in the shader; test versions of this used the normal map r and b channels
if (shader_flags & SDR_FLAG_MODEL_TEAMCOLOR) {
auto& tm_clr = material.get_team_color();
vec3d stripe_color;
vec3d base_color;
stripe_color.xyz.x = tm_clr.stripe.r;
stripe_color.xyz.y = tm_clr.stripe.g;
stripe_color.xyz.z = tm_clr.stripe.b;
base_color.xyz.x = tm_clr.base.r;
base_color.xyz.y = tm_clr.base.g;
base_color.xyz.z = tm_clr.base.b;
data_out->stripe_color = stripe_color;
data_out->base_color = base_color;
}
if (shader_flags & SDR_FLAG_MODEL_THRUSTER) {
data_out->thruster_scale = material.get_thrust_scale();
}
if (shader_flags & SDR_FLAG_MODEL_FOG) {
material::fog fog_params = material.get_fog();
if (fog_params.enabled) {
data_out->fogStart = fog_params.dist_near;
data_out->fogScale = 1.0f / (fog_params.dist_far - fog_params.dist_near);
data_out->fogColor.xyzw.x = i2fl(fog_params.r) / 255.0f;
data_out->fogColor.xyzw.y = i2fl(fog_params.g) / 255.0f;
data_out->fogColor.xyzw.z = i2fl(fog_params.b) / 255.0f;
data_out->fogColor.xyzw.w = 1.0f;
}
}
if (shader_flags & SDR_FLAG_MODEL_NORMAL_ALPHA) {
data_out->normalAlphaMinMax.x = material.get_normal_alpha_min();
data_out->normalAlphaMinMax.y = material.get_normal_alpha_max();
}
if (shader_flags & SDR_FLAG_MODEL_NORMAL_EXTRUDE) {
data_out->extrudeWidth = material.get_normal_extrude_width();
}
}