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LibGL+LibSoftGPU: Implement rasterization position

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Implements support for `glRasterPos` and updating the raster position's
window coordinates through `glBitmap`. The input for `glRasterPos` is
an object position that needs to go through the same vertex
transformations as our regular triangles.
This commit is contained in:
Jelle Raaijmakers 2022-01-12 17:07:53 +01:00 • committed by Andreas Kling
parent a4d98c4622
commit ca78327a96
4 changed files with 80 additions and 23 deletions
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18
Userland/Libraries/LibGL/SoftwareGLContext.cpp
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@ -2262,10 +2262,7 @@ void SoftwareGLContext::gl_draw_pixels(GLsizei width, GLsizei height, GLenum for
for (int x = 0; x < width; ++x)
bitmap->set_pixel(x, y, Color::from_rgba(*(pixel_data++)));
m_rasterizer.blit(
bitmap,
static_cast<int>(m_current_raster_position.window_coordinates.x()),
static_cast<int>(m_current_raster_position.window_coordinates.y()));
m_rasterizer.blit_to_color_buffer_at_raster_position(bitmap);
}
void SoftwareGLContext::gl_depth_range(GLdouble min, GLdouble max)
@ -2686,8 +2683,7 @@ void SoftwareGLContext::gl_raster_pos(GLfloat x, GLfloat y, GLfloat z, GLfloat w
APPEND_TO_CALL_LIST_AND_RETURN_IF_NEEDED(gl_raster_pos, x, y, z, w);
RETURN_WITH_ERROR_IF(m_in_draw_state, GL_INVALID_OPERATION);
m_current_raster_position.window_coordinates = { x, y, z };
m_current_raster_position.clip_coordinate_value = w;
m_rasterizer.set_raster_position({ x, y, z, w }, m_model_view_matrix, m_projection_matrix);
}
void SoftwareGLContext::gl_line_width(GLfloat width)
@ -2751,8 +2747,14 @@ void SoftwareGLContext::gl_bitmap(GLsizei width, GLsizei height, GLfloat xorig,
APPEND_TO_CALL_LIST_AND_RETURN_IF_NEEDED(gl_bitmap, width, height, xorig, yorig, xmove, ymove, bitmap);
RETURN_WITH_ERROR_IF(m_in_draw_state, GL_INVALID_OPERATION);
// FIXME: implement
dbgln_if(GL_DEBUG, "SoftwareGLContext FIXME: implement gl_bitmap({}, {}, {}, {}, {}, {}, {})", width, height, xorig, yorig, xmove, ymove, bitmap);
if (bitmap != nullptr) {
// FIXME: implement
dbgln_if(GL_DEBUG, "gl_bitmap({}, {}, {}, {}, {}, {}, {}): unimplemented", width, height, xorig, yorig, xmove, ymove, bitmap);
}
auto raster_position = m_rasterizer.raster_position();
raster_position.window_coordinates += { xmove, ymove, 0.f, 0.f };
m_rasterizer.set_raster_position(raster_position);
}
void SoftwareGLContext::gl_copy_tex_image_2d(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border)